CN114089176B - SF6 gas density relay calibrator with recovery device - Google Patents
SF6 gas density relay calibrator with recovery device Download PDFInfo
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- CN114089176B CN114089176B CN202111279419.1A CN202111279419A CN114089176B CN 114089176 B CN114089176 B CN 114089176B CN 202111279419 A CN202111279419 A CN 202111279419A CN 114089176 B CN114089176 B CN 114089176B
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- recovery control
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- 238000011084 recovery Methods 0.000 title claims abstract description 139
- 238000001514 detection method Methods 0.000 claims abstract description 48
- 238000004064 recycling Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 76
- 239000012535 impurity Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000004224 protection Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002955 isolation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an SF6 gas density relay calibrator with a recovery device, which comprises a calibrator shell, a calibration controller, a gas inlet connecting pipe orifice, a gas outlet connecting pipe orifice, a detection connecting pipe orifice, a recovery control box, a valve plate, a recovery control mechanism and the like.
Description
Technical Field
The invention relates to the technical field of gas density detection, in particular to an SF6 gas density relay calibrator with a recovery device.
Background
SF6 gas is more and more applied to various high-voltage, large-capacity and high-parameter electrical equipment due to excellent insulating and arc-extinguishing performance and stable chemical structure, and becomes the first-choice insulating and arc-extinguishing medium of the current high-voltage equipment, and an SF6 gas density relay calibrator is one of key elements of SF6 electrical equipment and is used for detecting the change of SF6 gas density in an SF6 electrical equipment body, the stable and reliable operation of the SF6 high-voltage electrical equipment is directly influenced by the performance of the SF6 gas density relay calibrator, and the SF6 density relay calibrator is detected and controlled by adopting a high-performance 16-bit singlechip along with the increasing use of the SF6 high-voltage electrical equipment and the wide use of a GIS gas insulation switch equipment system, so that the integration degree is high. SF6 is expensive and somewhat polluting, so it is often desirable to recover SF6 gas when performing a check. Chinese patent CN212180999U and CN203287284U respectively disclose a calibrator for SF6 gas density relay with a recovery device, which can realize SF6 gas recovery. However, these SF6 gas density relay checkmeters have some disadvantages, such as a working interface or a recovery interface, and no protection exists, so that external gas, dust and water vapor can easily enter the SF6 gas density relay checkmeter, and when the gas is recovered, the recovery of the gas in the SF6 gas density relay checkmeter needs to be performed under the condition of keeping the gas source and the gas density relay to be detected in a cannula, which prevents the use.
Disclosure of Invention
Aiming at the defects, the invention provides an SF6 gas density relay calibrator with a recovery device.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a take SF6 gas density relay check gauge of recovery unit, includes check gauge casing, check controller, inlet connection mouth of pipe, go out the gas connection mouth of pipe, detect the connecting mouth of pipe and retrieve the connecting mouth of pipe and communicate respectively and have one to install the recovery control box in the check gauge casing, communicate inlet connection mouth of pipe, go out the gas connection mouth of pipe, detect the recovery control box of connecting mouth of pipe and communicate check controller, check controller fixed mounting is on the bottom inner wall of check gauge casing; the check gauge comprises a check gauge shell, a gas inlet connecting pipe orifice, a gas outlet connecting pipe orifice, a detection connecting pipe orifice and a recovery connecting pipe orifice, wherein the check gauge shell is fixedly provided with a mounting plate; the recovery control mechanism is arranged beside each recovery control box in a matched manner and is connected with the valve plates, so that when a pipeline is inserted in the air inlet connecting pipe orifice or the air outlet connecting pipe orifice or the detection connecting pipe orifice or the recovery connecting pipe orifice in a matched manner, the valve plates can be driven to be opened, and the recovery control boxes are temporarily communicated with the interfaces communicated with the air inlet connecting pipe orifice, the air outlet connecting pipe orifice, the detection connecting pipe orifice and the recovery connecting pipe orifice; a storage bin is further arranged in the calibrator shell, and a recovery control box communicated with the recovery connecting pipe orifice is communicated with the storage bin; and is also provided with a connecting pipe which can be connected with the air outlet connecting pipe orifice and the recovery connecting pipe orifice in use.
Further, retrieve control mechanism including straight board rack, rotation horizontal pole, first gear, reset spring, arc post, arc rack, second gear, first bevel gear and second bevel gear, straight board rack slides and sets up on the slide hole of seting up at the mounting panel and is located inlet connection mouth of pipe or outlet connection mouth of pipe or detect connection mouth of pipe or retrieve by the connection mouth of pipe, reset spring is connected with straight board rack and is used for driving straight board rack and resets, rotate the horizontal pole and pass retrieve the control box and rotate and install on retrieving the control box, first gear is installed and is located the tip department that retrieves the control box and mesh with straight board rack at rotating the horizontal pole, second bevel gear is installed and is located the tip department that retrieves the control box at rotating the horizontal pole, arc post fixed mounting has offered the arc chamber along its axial, the arc rack is installed in the arc intracavity of arc post and can slide in the arc chamber and retrieve the mouth of pipe, the outer tip of arc rack is connected with the valve plate, the articulated of valve plate is in the interface department of control box, second bevel gear is installed and is rotated in the second bevel gear and is fixed with the bevel gear of retrieving one side of the bevel gear, and is meshed with the bevel gear of first bevel gear.
Further, the interfaces of the recovery control box, the air inlet connecting pipe orifice, the air outlet connecting pipe orifice, the detection connecting pipe orifice and the recovery connecting pipe orifice are circular interfaces, a conical plug is arranged on the side face of the valve plate, and when the valve plate closes the interfaces, the plug is positioned in the interfaces and blocks the interfaces.
Further, the mounting plate is provided with a chute, the side face of the straight plate rack is provided with a protrusion, the reset spring is mounted in the chute of the mounting plate, one end of the reset spring is abutted to the chute wall of the chute, and the other end of the reset spring is abutted to the protrusion of the straight plate rack.
Further, a second spring is arranged in the arc-shaped cavity of the arc-shaped column, one end of the second spring is abutted against the side wall of the arc-shaped cavity of the arc-shaped column, and the other end of the second spring is abutted against the inner end part of the arc-shaped rack.
Further, an air pump is arranged on the storage bin and is communicated with the recovery control box which is communicated with the air inlet connecting pipe orifice, the air outlet connecting pipe orifice and the detection connecting pipe orifice through pipelines.
Further, a side cavity communicated with the recovery control box is formed in the side surface of the recovery control box communicated with the air inlet connecting pipe orifice, the air outlet connecting pipe orifice and the detection connecting pipe orifice, and a pipeline communicated with the air pump and the recovery control box is communicated in the middle of the side cavity; the side cavity is internally provided with a piston in a matching manner, the air inlet connecting pipe orifice, the air outlet connecting pipe orifice and the detection connecting pipe orifice are communicated, a threaded sleeve is slidably arranged in the recovery control box, a driving rotating rod is rotatably arranged at one end of the driving rotating rod, a third bevel gear is arranged at the other end of the driving rotating rod, an external thread matched with the internal thread of the threaded sleeve is arranged at the other end of the driving rotating rod in a threaded manner, the threaded sleeve is connected with the piston, and the third bevel gear is meshed with the first bevel gear.
Further, a one-way valve is arranged on a pipeline for communicating the air pump with the recovery control box.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the SF6 gas density relay calibrator with the recovery device, under the condition that the SF6 gas density relay calibrator is not connected with a gas source, a gas density relay and the like, the inside and the outside of the SF6 gas density relay calibrator can be kept isolated, impurities such as external gas, dust, water vapor and the like cannot enter the inside of the SF6 gas density relay calibrator through a gas inlet connecting pipe orifice or a gas outlet connecting pipe orifice or a detection connecting pipe orifice or a recovery connecting pipe orifice, so that other protections are not needed, the gas source or the gas density relay is not required to be connected with the SF6 gas density relay calibrator all the time, the inside isolation of the SF6 gas density relay calibrator can be realized, the purpose of preventing the entry of the impurities such as gas, dust, water vapor and the like is achieved, the inside of the SF6 gas density relay calibrator is kept clean, and the calibration accuracy is ensured;
2. the air extraction recovery can be performed under the condition that an air source and a gas density relay are not connected, the air source and the gas density relay are not required to be connected with a gas density relay calibrator all the time, external air, impurities and the like cannot be pumped into the storage bin at the moment, and the purity of the gas recovered in the storage bin is guaranteed so as to be convenient to recycle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a front view of a preferred embodiment of the present invention;
FIG. 3 is a schematic side view of a preferred embodiment of the present invention;
FIG. 4 is an enlarged schematic view of FIG. 3 at A;
FIG. 5 is an enlarged schematic view at B in FIG. 3;
FIG. 6 is a schematic illustration of an embodiment of the connection tube inserted into the outlet connection tube orifice and the recovery connection tube orifice.
Wherein the symbols shown in the figures are: 1-a calibrator housing; 2-checking the controller; 3-recovering the connecting pipe orifice; 4-an air inlet connecting pipe orifice; 5-an outlet gas connecting pipe orifice; 6-detecting the connecting pipe orifice; 7-a storage bin; 8-bulge; 9-a straight plate rack; 10-rotating the cross bar; 11-a recovery control box; 12-a return spring; 13-a valve plate; 14-arc-shaped columns; 15-arc racks; 16-a first bevel gear; 17-a second bevel gear; 18-a first gear; 19-a second gear; 20-a plug; 21-a mounting plate; 22-a second spring; 23-side lumen; 24-piston; 25-a threaded sleeve; 26-driving a rotating rod; 27-a third bevel gear; 28-a one-way valve; 29-connecting pipes; 30-an air pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, a check meter for an SF6 gas density relay with a recovery device is provided in a preferred embodiment of the present invention, and includes a check meter housing 1, a check controller 2, an air inlet connection pipe orifice 4, an air outlet connection pipe orifice 5, a detection connection pipe orifice 6, and a recovery connection pipe orifice 3, wherein the check meter housing 1 is equipped with a data interface, a control panel, a power socket, a switch button, a display screen, and the like, the air inlet connection pipe orifice 4, the air outlet connection pipe orifice 5, the detection connection pipe orifice 6, and the recovery connection pipe orifice 3 are respectively connected with a recovery control box 11 installed in the check meter housing 1, the recovery control box 11 is fixedly installed in the check meter housing 1 in a cavity structure, the recovery control boxes 11 connected with the air inlet connection pipe orifice 4, the air outlet connection pipe orifice 5, and the detection connection pipe orifice 6 are connected with the check controller 2, and the check controller 2 is fixedly installed on the bottom inner wall of the check meter housing 1. The check gauge casing 1 is fixedly provided with a mounting plate 21, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 are fixedly mounted on the mounting plate 21, the joint of the recovery control box 11, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 is provided with a valve plate 13 which can temporarily close the joint, and the joint can be closed through the valve plate 13 to isolate the recovery control box 11 from the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3. The check gauge shell 1 is internally provided with a recovery control mechanism, the recovery control mechanism is arranged beside each recovery control box 11 in a matched mode, each recovery control box 11 is provided with one valve plate 13, so that when the air inlet connecting pipe orifice 4 or the air outlet connecting pipe orifice 5 or the detection connecting pipe orifice 6 or the recovery connecting pipe orifice 3 is matched and inserted with a pipeline, the valve plate 13 can be driven to open, and the interfaces of the recovery control boxes 11, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 are communicated with one another temporarily. The calibrator shell 1 is also internally provided with a storage bin 7, and a recovery control box 11 communicated with the recovery connecting pipe orifice 3 is communicated with the storage bin 7. The SF6 gas density relay calibrator with the recovery device is further provided with a connecting pipe 29, wherein the connecting pipe 29 can be connected with the gas outlet connecting pipe orifice 5 and the recovery connecting pipe orifice 3 when in use, and in the alternative embodiment, the connecting pipe 29 is a flexible pipeline and is provided with two ends, and the ends can be connected with the gas outlet connecting pipe orifice 5 or the recovery connecting pipe orifice 3 and can be folded and placed when not in use.
In a preferred embodiment, the recovery control mechanism comprises a straight plate rack 9, a rotary cross bar 10, a first gear 18, a return spring 12, an arc column 14, an arc rack 15, a second gear 19, a first bevel gear 16 and a second bevel gear 17, wherein the straight plate rack 9 is arranged on a sliding hole formed in a mounting plate 21 in a sliding manner and is positioned beside an air inlet connecting pipe orifice 4 or an air outlet connecting pipe orifice 5 or a detection connecting pipe orifice 6 or a recovery connecting pipe orifice 3, so that when an external pipeline is inserted into the air inlet connecting pipe orifice 4 or the air outlet connecting pipe orifice 5 or the detection connecting pipe orifice 6 or the recovery connecting pipe orifice 3, the straight plate rack 9 can be extruded and the straight plate rack 9 can slide, the return spring 12 is connected with the straight plate rack 9 and is used for driving the straight plate rack 9 to return, in particular, the mounting plate 21 is provided with a sliding groove, the side surface of the straight plate rack 9 is provided with a bulge 8, one end of the return spring 12 is abutted against the sliding groove wall of the mounting plate 21, and the other end of the return spring 12 is abutted against the bulge 8 of the straight plate rack 9, when the straight plate rack 9 slides, the return spring 12 can be extruded, and when the straight plate rack 9 is released under the action of the return spring 12; the rotary cross rod 10 passes through the recovery control box 11 and is rotatably mounted on the recovery control box 11, a sealing sleeve is arranged at the part of the rotary cross rod 10 passing through the recovery control box 11 so as to realize sealing at the part connected with the recovery control box 11 to prevent air leakage, a first gear 18 is mounted at the end part of the rotary cross rod 10 positioned outside the recovery control box 11 and meshed with the straight plate rack 9, a second bevel gear 17 is mounted at the end part of the rotary cross rod 10 positioned in the recovery control box 11, an arc-shaped column 14 is fixedly mounted in the recovery control box 11, an arc-shaped cavity is axially formed along the arc-shaped column, an arc-shaped rack 15 is mounted in the arc-shaped cavity of the arc-shaped column 14 and can slide in the arc-shaped cavity, a second spring 22 is arranged in the arc-shaped cavity of the arc-shaped column 14, one end of the second spring 22 is abutted against the side wall of the arc-shaped cavity of the arc-shaped column 14, and the other end of the second spring 18 is abutted against the inner end part of the arc-shaped rack 15 so as to enable the arc-shaped rack 15 to have an outward driving force; the outer end of the arc-shaped rack 15 is connected with the valve plate 13, the valve plate 13 is hinged at the interface of the recovery control box 11 so that the valve plate 13 can be driven to be opened or closed when the arc-shaped rack 15 slides, and in the preferred embodiment, the interfaces of the recovery control box 11, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 are circular interfaces, a conical plug 20 is arranged on the side surface of the valve plate 13, and the plug 20 is positioned in the interfaces and plugs the interfaces when the valve plate 13 closes the interfaces so as to further seal the interfaces through the plug 20 to ensure tightness; the second gear 19 is rotatably installed in the recovery control box 11 and engaged with the arc-shaped rack 15, and has a first bevel gear 16 fixedly installed at one side thereof, and the first bevel gear 16 is engaged with the second bevel gear 17.
In the preferred embodiment, the air pump 30 is arranged on the storage bin 7, and the air pump 30 is communicated with the recovery control box 11 communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6 through pipelines, so that when the air pump 30 is started, air in the recovery control box 11 communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6 can be pumped, and the air is pumped into the storage bin 7. The check valve 28 is arranged on the pipeline which is communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the recovery control box 11 communicated with the detection connecting pipe orifice 6 and the air pump 30, so that the gas can only enter the storage bin 7 from the recovery control box 11.
Further, a side cavity 23 communicated with the recovery control box 11 is arranged on the side surface of the recovery control box 11 communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6, and a pipeline communicated with the recovery control box 11 and the air pump 30 is communicated with the middle part of the side cavity 23; the side cavity 23 is internally provided with a piston 24 in a matching manner, a threaded sleeve 25 is slidably arranged in the recovery control box 11 which is communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6, a driving rotating rod 26 is rotatably arranged at one end of the driving rotating rod 26, a third bevel gear 27 is arranged at the other end of the driving rotating rod 26, an external thread matched with the internal thread of the threaded sleeve 25 is arranged in the threaded sleeve 25 in a threaded manner, the threaded sleeve 25 is connected with the piston 24, the third bevel gear 27 is meshed with the first bevel gear 16, when the first bevel gear 16 is implemented, the first bevel gear 16 rotates to drive the third bevel gear 27 to drive the driving rotating rod 26, the driving rotating rod 26 and the threaded sleeve 25 form a screw pair structure so as to drive the threaded sleeve 25 to move and drive the piston 24 to move, the moving direction is based on the rotating direction of the driving rotating rod 26, when the valve plate 13 is in a closed state, the piston 24 walks through the middle of the side cavity 23 so that the pipe orifice 11 which is communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6 are in the recovery control box 11, the pipe orifice 30 is communicated with the pipe orifice 11 of the recovery control box 11, and when the valve plate 13 is opened to a certain extent, the valve plate 24 is controlled to move towards the recovery box 11, and the recovery box 11 is not communicated with the recovery box 11, and the valve 30 is controlled to move in the direction, and the direction is controlled to move towards the recovery box 11.
During implementation, a detection pipeline of the SF6 gas density relay to be detected is inserted into the detection connecting pipe orifice 6, a pipeline of the air source for test is inserted into the air inlet connecting pipe orifice 4, then two ends of the connecting pipe 29 are inserted into the air outlet connecting pipe orifice 5 and the recovery connecting pipe orifice 3, at the moment, the straight plate racks 9 arranged beside the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 are extruded, the straight plate racks 9 slide to drive the first gear 18 to rotate and drive the rotating cross rod 10 to rotate, at the moment, the second bevel gear 17 rotates together to drive the first bevel gear 16 meshed with the first bevel gear to rotate and drive the second gear 19 to rotate, the second gear 19 rotates to drive the arc racks 15 to slide along the arc-shaped cavity of the arc-shaped column 14, so as to drive the valve plate 13 to rotate, at the moment, the valve plate 13 is opened, namely the interfaces of the recovery control box 11, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5, the detection connecting pipe orifice 6 and the recovery connecting pipe orifice 3 are communicated, at the moment, the checked gas can be finally discharged from the air outlet connecting pipe orifice 5 through the recovery control box 11 after checked through the check controller 2, the connection pipe orifice 29, the temporary storage bin 7 is finally stored, and the gas is recovered through the connection bin 3, and the purpose is achieved. When the pipeline on the air inlet connecting pipe orifice 4 or the air outlet connecting pipe orifice 5 or the detecting connecting pipe orifice 6 or the recycling connecting pipe orifice 3 is pulled out, the straight plate rack 9 is reset under the action of the reset spring 12, so that the first gear 18, the rotary cross rod 10, the second bevel gear 17, the first bevel gear 16, the second gear 19, the arc-shaped rack 15 and the valve plate 13 are driven to move, the valve plate 13 is reset and the interface is closed, at the moment, the air inlet connecting pipe orifice 4 or the air outlet connecting pipe orifice 5 or the detecting connecting pipe orifice 6 or the recycling connecting pipe orifice 3 is isolated from the recycling control box 11, namely from the inside of the SF6 gas density relay calibrator, external impurities such as gas, dust and water vapor can not enter the SF6 gas density relay calibrator through the gas inlet connecting pipe orifice 4 or the gas outlet connecting pipe orifice 5 or the detection connecting pipe orifice 6 or the recovery connecting pipe orifice 3, so that other protection is not needed, a gas source or a gas density relay is not needed to be connected with the SF6 gas density relay calibrator all the time, the internal isolation of the SF6 gas density relay calibrator can be realized, the purpose of preventing the entry of the impurities such as gas, dust and water vapor is achieved, the cleanness of the inside of the SF6 gas density relay calibrator is maintained, and the calibration accuracy is ensured. When the SF6 gas in the storage bin 7 needs to be taken out, the pipeline of the recovery instrument is inserted into the recovery connecting pipe orifice 3 to realize the conduction with the storage bin 7, and the SF6 gas in the storage bin 7 can be pumped out. It should be noted that in some implementations, the pipe of the recovery apparatus may be directly inserted into the gas outlet connection pipe orifice 5 to communicate with the inside of the SF6 gas density relay calibrator, so that the gas discharged from the calibrator is directly sent into the recovery apparatus through the gas outlet connection pipe orifice 5, so as to provide more use selectivity.
By arranging the air pump 30, the air in the recovery control box 11 communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6 and the gas in the check controller 2 or the connected gas density relay can be pumped into the storage bin 7, so that the complete recovery of the air is realized. When the piston 24 is arranged, when the valve plate 13 is in a closed state, the piston 24 walks through the middle part of the side cavity 23, so that the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the pipe orifice of the pipeline of the detection connecting pipe orifice 6 are communicated with the recovery control box 11, at the moment, the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6 are isolated from the recovery control box 11, and then the air pump 30 is used for exhausting and recovering the air in the recovery control box 11 and the verification controller 2, which are communicated with the air inlet connecting pipe orifice 4, the air outlet connecting pipe orifice 5 and the detection connecting pipe orifice 6, namely, exhausting and recovering can be performed under the condition of not connecting an air source and a gas density relay, the air source and the gas density relay are not always connected with a gas density relay verification instrument, and external air, impurities and the like are not pumped into the storage bin 7 at the moment, so that purity of the gas recovered in the storage bin 7 is ensured, and the recovery is convenient to use.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The SF6 gas density relay calibrator with the recovery device is characterized by comprising a calibrator shell (1), a calibrator controller (2), an air inlet connecting pipe orifice (4), an air outlet connecting pipe orifice (5), a detection connecting pipe orifice (6) and a recovery connecting pipe orifice (3), wherein the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5), the detection connecting pipe orifice (6) and the recovery connecting pipe orifice (3) are respectively communicated with a recovery control box (11) installed in the calibrator shell (1), the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5) and the recovery control box (11) of the detection connecting pipe orifice (6) are communicated with the calibrator controller (2), and the calibrator controller (2) is fixedly installed on the inner wall of the bottom of the calibrator shell (1); the calibrator comprises a calibrator shell (1), wherein a mounting plate (21) is fixedly arranged on the calibrator shell (1), an air inlet connecting pipe orifice (4), an air outlet connecting pipe orifice (5), a detection connecting pipe orifice (6) and a recovery connecting pipe orifice (3) are fixedly arranged on the mounting plate (21), and a valve plate (13) capable of temporarily closing the interface is arranged at the interface of the recovery control box (11) communicated with the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5), the detection connecting pipe orifice (6) and the recovery connecting pipe orifice (3); the recovery control mechanism is arranged beside each recovery control box (11) in a matched mode and is connected with the valve plates (13), so that when the air inlet connecting pipe orifice (4) or the air outlet connecting pipe orifice (5) or the detection connecting pipe orifice (6) or the recovery connecting pipe orifice (3) is inserted with a pipeline in a matched mode, the valve plates (13) can be driven to be opened, and the recovery control boxes (11) are temporarily conducted with the interfaces communicated with the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5), the detection connecting pipe orifice (6) and the recovery connecting pipe orifice (3); a storage bin (7) is further arranged in the calibrator shell (1), and a recovery control box (11) communicated with the recovery connecting pipe orifice (3) is communicated with the storage bin (7); the device is also provided with a connecting pipe (29), and the connecting pipe (29) can be connected with an air outlet connecting pipe orifice (5) and a recovery connecting pipe orifice (3) when in use;
the recovery control mechanism comprises a straight plate rack (9), a rotary cross bar (10), a first gear (18), a return spring (12), an arc-shaped column (14), an arc-shaped rack (15), a second gear (19), a first bevel gear (16) and a second bevel gear (17), wherein the straight plate rack (9) is arranged on a sliding hole formed in a mounting plate (21) in a sliding manner and is positioned beside the air inlet connecting pipe orifice (4) or the air outlet connecting pipe orifice (5) or the detection connecting pipe orifice (6) or the recovery connecting pipe orifice (3), the return spring (12) is connected with the straight plate rack (9) and is used for driving the straight plate rack (9) to reset, the rotary cross bar (10) penetrates through the recovery control box (11) and is rotatably mounted on the recovery control box (11), the first gear (18) is mounted at the end part of the rotary cross bar (10) outside the recovery control box (11) and is meshed with the straight plate (9), the second bevel gear (17) is mounted at the end part of the rotary cross bar (10) located in the recovery control box (11), the arc-shaped column (14) is fixedly mounted in the arc-shaped column (14) and can be axially mounted in the arc-shaped column (11) in the arc-shaped control box (11), the outer end of the arc-shaped rack (15) is connected with the valve plate (13), the valve plate (13) is hinged at the interface of the recovery control box (11), the second gear (19) is rotatably arranged in the recovery control box (11) and meshed with the arc-shaped rack (15), a first bevel gear (16) is fixedly arranged on one side surface of the second gear, and the first bevel gear (16) is meshed with the second bevel gear (17);
the recycling control box (11) is connected with the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5), the detection connecting pipe orifice (6) and the recycling connecting pipe orifice (3) through circular interfaces, a conical plug (20) is arranged on the side face of the valve plate (13), and when the valve plate (13) closes the interfaces, the plug (20) is positioned in the interfaces and blocks the interfaces.
2. The SF6 gas density relay calibrator with the recovery device according to claim 1, wherein the mounting plate (21) is provided with a chute, the side surface of the straight plate rack (9) is provided with a bulge, the return spring (12) is mounted in the chute of the mounting plate (21), one end of the return spring is abutted with the wall of the chute, and the other end of the return spring is abutted with the bulge of the straight plate rack (9).
3. The SF6 gas density relay calibrator with the recovery device according to claim 1, wherein a second spring (22) is arranged in the arc-shaped cavity of the arc-shaped column (14), one end of the second spring (22) is abutted against the side wall of the arc-shaped cavity of the arc-shaped column (14), and the other end of the second spring is abutted against the inner end part of the arc-shaped rack (15).
4. The SF6 gas density relay calibrator with the recovery device according to claim 1, wherein an air pump (30) is arranged on the storage bin (7), and the air pump (30) is communicated with the recovery control box (11) which is communicated with the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5) and the detection connecting pipe orifice (6) through pipelines.
5. The SF6 gas density relay calibrator with the recovery device according to claim 4, wherein a side surface of the recovery control box (11) communicated with the gas inlet connecting pipe orifice (4), the gas outlet connecting pipe orifice (5) and the detection connecting pipe orifice (6) is provided with a side cavity (23) communicated with the recovery control box (11), and a pipeline communicated with the gas pump (30) and the recovery control box (11) is communicated with the middle part of the side cavity (23); the side cavity (23) is internally provided with a piston (24) in a matching manner, the air inlet connecting pipe orifice (4), the air outlet connecting pipe orifice (5) and the detection connecting pipe orifice (6) are communicated with each other, a threaded sleeve (25) is slidably arranged in the recovery control box (11) and a driving rotating rod (26) is rotatably arranged in the recovery control box, one end of the driving rotating rod (26) is provided with a third bevel gear (27), the other end of the driving rotating rod is provided with an external thread matched with the internal thread of the threaded sleeve (25) and is in threaded connection with the threaded sleeve (25), the threaded sleeve (25) is connected with the piston (24), and the third bevel gear (27) is meshed with the first bevel gear (16).
6. The SF6 gas density relay calibrator with the recovery device according to claim 4, wherein a check valve (28) is arranged on a pipeline for communicating the air pump (30) with the recovery control box (11).
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| CN212180999U (en) * | 2020-04-20 | 2020-12-18 | 常州捷卓智能科技有限公司 | SF6 gas density relay calibrator with recovery unit |
| CN212228293U (en) * | 2020-05-12 | 2020-12-25 | 厦门加华电力科技有限公司 | Small SF6 density relay tester |
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2021
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| AU2929877A (en) * | 1976-08-16 | 1979-04-05 | University Of Sydney, The | Cryogenic pumping system |
| US4274851A (en) * | 1976-08-16 | 1981-06-23 | The University Of Sydney | Gas recovery of sulphur hexafluoride |
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| CN114089176A (en) | 2022-02-25 |
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