CN210297053U - Special structure's cabinet of aerifing - Google Patents
Special structure's cabinet of aerifing Download PDFInfo
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- CN210297053U CN210297053U CN201921525993.9U CN201921525993U CN210297053U CN 210297053 U CN210297053 U CN 210297053U CN 201921525993 U CN201921525993 U CN 201921525993U CN 210297053 U CN210297053 U CN 210297053U
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Abstract
The utility model relates to an inflatable cabinet with special structure, which comprises an air box, a cable chamber and an instrument chamber; the utility model discloses a cable chamber, including gas tank, automatic inflation device, first joint, second joint, first solenoid valve one end is connected the first joint other end, the first solenoid valve other end is connected second joint one end, the second connects the other end and connects high-pressure gas cylinder, the gas tank is fixed set up in on the gas tank, be used for monitoring gas tank internal gas pressure, the microcomputer is fixed set up in on the gas tank. The gas supply device has the advantages of automatic gas supply, compact structure, safety and reliability.
Description
Technical Field
The utility model relates to a power transmission and distribution technical field, concretely relates to aerify cabinet.
Background
Indoor alternating-current high-voltage gas insulated metal-enclosed switchgear (namely an inflating cabinet) is a new generation of switchgear, a main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, the whole cabinet is combined with a sulfur hexafluoride gas compartment in an air insulation mode, and the indoor alternating-current high-voltage gas insulated metal-enclosed switchgear is compact and expandable and is suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking and the like, and can provide satisfactory technical schemes for various application occasions (particularly places with severe environment) and different user requirements. The adoption of sensing technology and the latest protective relay, together with advanced technical performance and a light and flexible assembly scheme, can completely meet different requirements of users. The inflatable cabinet is suitable for small-sized secondary substations, switching stations, box-type substations, residential districts, industrial and mining enterprises and large markets of power systems, and is particularly suitable for occasions with higher requirements on electricity consumption, such as airports, subways, railways and the like.
The gas-filled cabinet generally comprises a gas tank, a cable chamber and an instrument chamber, wherein main switch components such as a circuit breaker, an isolating switch, a grounding switch and the like are arranged in the gas tank, the cable chamber is used for connecting cables, and the instrument chamber is used for installing various electrical instruments. The gas box is filled with sulfur hexafluoride gas to ensure the insulation between the switch components. However, gas leakage exists more or less in the use process of the gas box, and in the past, sulfur hexafluoride gas in the gas box is less and less, the insulating property in the gas box is poorer and poorer, and certain potential safety hazards exist.
Therefore, it is an urgent need to solve the above problems by those skilled in the art to improve the existing gas-filled cabinet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can automatic make-up gas, and compact structure, safe and reliable's special construction aerify cabinet.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an inflatable cabinet with a special structure comprises an air box, a cable chamber and an instrument chamber, wherein a circuit breaker, an isolating switch and a grounding switch are arranged in the air box, an operating mechanism is arranged in front of the air box, a copper bar is connected below the circuit breaker, an insulator is arranged on the copper bar, the insulator penetrates through the air box and enters the cable chamber, and a door panel is arranged in front of the cable chamber; the method is characterized in that:
the lower end in front of the gas box is inwards recessed to form an accommodating notch, an automatic inflating device is arranged at the accommodating notch and is positioned in the cable chamber, the automatic inflating device comprises a high-pressure gas cylinder, a barometer, a microcomputer, a first joint, a second joint and a first electromagnetic valve, one end of the first joint penetrates through and is fixedly arranged on the gas box, one end of the first electromagnetic valve is connected with the other end of the first joint, the other end of the first electromagnetic valve is connected with one end of the second joint, the other end of the second joint is connected with the high-pressure gas cylinder, the barometer is fixedly arranged on the gas box and is used for monitoring the gas pressure in the gas box, and the microcomputer is fixedly arranged on the gas box;
sulfur hexafluoride gas is contained in the high-pressure gas cylinder, and the air pressure in the high-pressure gas cylinder is higher than the air pressure in the gas box; the barometer and the first electromagnetic valve are both electrically connected with the microcomputer; when the air pressure gauge monitors that the air pressure in the air box is lower than a set value, the air pressure gauge transmits a pressure signal to the microcomputer, the microcomputer sends a signal to enable the first electromagnetic valve to be opened, and sulfur hexafluoride gas in the high-pressure gas bottle enters the air box until the air pressure in the air box reaches a normal value.
As an improvement, the automatic inflation device further comprises a second electromagnetic valve and a third joint, one end of the second electromagnetic valve is connected with the first joint, the other end of the second electromagnetic valve is connected with one end of the third joint, and the other end of the third joint penetrates through the cable chamber and is used for being connected with a sulfur hexafluoride gas inflation system.
Preferably, the high-pressure gas cylinder is detachably connected with the second joint, a limit ring extends out of the inner wall of the second joint, an elastic sealing ring is arranged between the high-pressure gas cylinder and the second joint, and the elastic sealing ring abuts against the limit ring; the high-pressure gas cylinder can be replaced after the sulfur hexafluoride gas is used up; the elastic sealing ring can increase the sealing performance between the high-pressure gas cylinder and the second joint.
The valve core is arranged at the opening of the high-pressure gas cylinder, the thimble is arranged in the second joint, and the thimble is fixedly arranged on the limiting ring; when the high-pressure gas cylinder is separated from the second joint, the valve core seals the high-pressure gas cylinder, and when the high-pressure gas cylinder is completely connected to the second joint, the valve core is ejected by the ejector pin, so that the high-pressure gas cylinder is communicated with the second joint. The thimble and the valve core are arranged to ensure that the high-pressure gas cylinder does not leak sulfur hexafluoride in the assembling and disassembling process.
Preferably, the first joint is a T-shaped three-way joint, the second joint is an L-shaped two-way joint, and the third joint is a linear two-way joint; the first electromagnetic valve and the second electromagnetic valve are respectively connected to two ends of the first connector in the left-right direction, the high-pressure gas cylinder is arranged in the front-back direction through the second connector, and the third connector penetrates through the cable chamber in the left-right direction. Because the space in the gas charging cabinet is limited, in order to utilize the space as much as possible, the two electromagnetic valves are transversely arranged, and the high-pressure gas cylinder is ensured to have enough volume.
As an improvement, the door plate is provided with an observation window which is aligned with the barometer and the microcomputer. It is convenient to observe the reading of the barometer and the state displayed by the microcomputer.
Compared with the prior art, the utility model has the advantages of it is following: copper bar and insulator in this scheme all lean on backward for there is sufficient space formation in gas tank the place ahead to hold the breach. The automatic inflation device is arranged at the accommodating notch, and the size of the original inflation cabinet cannot be affected.
It is worth mentioning that the automatic inflation device can not only use a high-pressure gas cylinder to supplement sulfur hexafluoride gas, but also be connected with an external sulfur hexafluoride gas inflation system to supplement the sulfur hexafluoride gas. Both approaches may be more desirable, either alternatively or both. Particularly, when only a single gas-filled cabinet is used in a use occasion, the high-pressure gas cylinder is suitable for gas filling, and the high-pressure gas cylinder is replaced in time after the sulfur hexafluoride gas in the high-pressure gas cylinder is used up, or the high-pressure gas cylinder is filled with gas; when a plurality of gas charging cabinets are arranged in a use occasion, each gas charging cabinet can be connected in series into a sulfur hexafluoride gas charging system through a third connector, and a large sulfur hexafluoride gas cylinder is arranged on site, so that all the gas charging cabinets can be charged for a long time.
In addition, the automatic inflation device is an optional part, and customers can select and install more needed. The inflation cabinet without the automatic inflation device is only required to be plugged by the plug, and the air box is used for connecting the mounting hole of the barometer and the first connector.
Drawings
Fig. 1 is a front view of a preferred embodiment according to the present invention;
fig. 2 is a left side view of a preferred embodiment according to the present invention;
FIG. 3 is a schematic diagram of the structure of the air tank and the automatic inflation device according to a preferred embodiment of the present invention;
FIG. 4 is a schematic perspective view of an automatic inflation device according to a preferred embodiment of the present invention;
FIG. 5 is a top view of an automatic inflation device according to a preferred embodiment of the present invention;
FIG. 6 is an exploded view of an automatic inflation device according to a preferred embodiment of the present invention;
fig. 7 is a schematic perspective view of a second joint according to a preferred embodiment of the present invention;
fig. 8 is a schematic perspective view of a high-pressure gas cylinder according to a preferred embodiment of the present invention, and shows a partially enlarged view of a valve core.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
As shown in fig. 1 to 8, for the utility model discloses a preferred embodiment includes gas tank 1, cable chamber 2 and instrument room 3, is provided with circuit breaker 4, isolator 5 and earthing switch 6 in the gas tank, and 1 the place ahead of gas tank is provided with operating device 7, and circuit breaker 4 below is connected with copper bar 41, is provided with insulator 42 on the copper bar 41, and insulator 42 passes gas tank 1 and gets into cable chamber 2, and 2 the place ahead of cable chamber is provided with door plant 21.
The key point is that the lower end in front of the gas box 1 is inwards recessed to form an accommodating notch 11, an automatic inflating device 8 is arranged at the accommodating notch 11, the automatic inflating device 8 is located in the cable chamber 2, the automatic inflating device 8 comprises a high-pressure gas cylinder 81, a barometer 82, a microcomputer 83, a first connector 84, a second connector 85 and a first electromagnetic valve 86, one end of the first connector 84 penetrates through and is fixedly arranged on the gas box 1, one end of the first electromagnetic valve 86 is connected with the other end of the first connector 84, the other end of the first electromagnetic valve 86 is connected with one end of the second connector 85, the other end of the second connector 85 is connected with the high-pressure gas cylinder 81, the barometer 82 is fixedly arranged on the gas box 1 and is used for monitoring the gas pressure in the gas box 1, and. Sulfur hexafluoride gas is contained in the high-pressure gas cylinder 81, and the gas pressure in the high-pressure gas cylinder 81 is higher than the gas pressure in the gas box 1; the air pressure gauge 82 and the first electromagnetic valve 86 are both electrically connected with the microcomputer 83; when the barometer 82 monitors that the air pressure in the air tank 1 is lower than a set value, the barometer 82 transmits a pressure signal to the microcomputer 83, the microcomputer 83 sends a signal to open the first electromagnetic valve 86, and sulfur hexafluoride gas in the high-pressure air bottle 81 enters the air tank 1 until the air pressure in the air tank 1 reaches a normal value.
In this embodiment, the automatic inflating device 8 further includes a second electromagnetic valve 87 and a third joint 88, one end of the second electromagnetic valve 87 is connected to the first joint 84, the other end of the second electromagnetic valve 87 is connected to one end of the third joint 88, and the other end of the third joint 88 penetrates through the cable chamber 2 and is used for connecting a sulfur hexafluoride gas inflating system. The high-pressure gas cylinder 81 is detachably connected with the second joint 85, a limit ring 851 extends out of the inner wall of the second joint 85, an elastic sealing ring 89 is arranged between the high-pressure gas cylinder 81 and the second joint 85, and the elastic sealing ring 89 abuts against the limit ring 851; a valve core 811 is arranged at the opening of the high-pressure gas cylinder 81, a thimble 852 is arranged in the second joint 85, and the thimble 852 is fixedly arranged on the limit ring 851; when the high-pressure gas cylinder 81 is separated from the second joint 85, the valve core 811 closes the high-pressure gas cylinder 81, and when the high-pressure gas cylinder 81 is completely connected to the second joint 85, the valve core 811 is pushed open by the thimble 852, so that the high-pressure gas cylinder 81 is communicated with the second joint 85. The first joint 84 is a T-shaped three-way joint, the second joint 85 is an L-shaped two-way joint, and the third joint 88 is a linear two-way joint; a first solenoid valve 86 and a second solenoid valve 87 are connected to both ends of the first connector 84 in the left-right direction, respectively, and the high-pressure gas cylinder 81 is disposed in the front-rear direction through the second connector 85, and a third connector 88 penetrates the cable chamber in the left-right direction. The door panel 21 is provided with an observation window 211, and the observation window 211 is aligned with the barometer 82 and the microcomputer 83.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An inflatable cabinet with a special structure comprises an air box, a cable chamber and an instrument chamber, wherein a circuit breaker, an isolating switch and a grounding switch are arranged in the air box, an operating mechanism is arranged in front of the air box, a copper bar is connected below the circuit breaker, an insulator is arranged on the copper bar, the insulator penetrates through the air box and enters the cable chamber, and a door panel is arranged in front of the cable chamber; the method is characterized in that:
the lower end in front of the gas box is inwards recessed to form an accommodating notch, an automatic inflating device is arranged at the accommodating notch and is positioned in the cable chamber, the automatic inflating device comprises a high-pressure gas cylinder, a barometer, a microcomputer, a first joint, a second joint and a first electromagnetic valve, one end of the first joint penetrates through and is fixedly arranged on the gas box, one end of the first electromagnetic valve is connected with the other end of the first joint, the other end of the first electromagnetic valve is connected with one end of the second joint, the other end of the second joint is connected with the high-pressure gas cylinder, the barometer is fixedly arranged on the gas box and is used for monitoring the gas pressure in the gas box, and the microcomputer is fixedly arranged on the gas box;
sulfur hexafluoride gas is contained in the high-pressure gas cylinder, and the air pressure in the high-pressure gas cylinder is higher than the air pressure in the gas box; the barometer and the first electromagnetic valve are both electrically connected with the microcomputer; when the air pressure gauge monitors that the air pressure in the air box is lower than a set value, the air pressure gauge transmits a pressure signal to the microcomputer, the microcomputer sends a signal to enable the first electromagnetic valve to be opened, and sulfur hexafluoride gas in the high-pressure gas bottle enters the air box until the air pressure in the air box reaches a normal value.
2. An inflatable cabinet of special construction as claimed in claim 1, wherein: the automatic inflation device further comprises a second electromagnetic valve and a third connector, one end of the second electromagnetic valve is connected with the first connector, the other end of the second electromagnetic valve is connected with one end of the third connector, and the other end of the third connector penetrates through the cable chamber and is used for being connected with a sulfur hexafluoride gas inflation system.
3. An inflatable cabinet of special construction as claimed in claim 2, wherein: the high-pressure gas cylinder is detachably connected with the second joint, a limiting ring extends out of the inner wall of the second joint, an elastic sealing ring is arranged between the high-pressure gas cylinder and the second joint, and the elastic sealing ring is abutted against the limiting ring;
the valve core is arranged at the opening of the high-pressure gas cylinder, the thimble is arranged in the second joint, and the thimble is fixedly arranged on the limiting ring; when the high-pressure gas cylinder is separated from the second joint, the valve core seals the high-pressure gas cylinder, and when the high-pressure gas cylinder is completely connected to the second joint, the valve core is ejected by the ejector pin, so that the high-pressure gas cylinder is communicated with the second joint.
4. A gas-filled cabinet of particular construction as claimed in claim 3, wherein: the first joint is a T-shaped three-way joint, the second joint is an L-shaped two-way joint, and the third joint is a linear two-way joint; the first electromagnetic valve and the second electromagnetic valve are respectively connected to two ends of the first connector in the left-right direction, the high-pressure gas cylinder is arranged in the front-back direction through the second connector, and the third connector penetrates through the cable chamber in the left-right direction.
5. An inflatable cabinet of special construction as claimed in claim 4, wherein: the door plate is provided with an observation window which is aligned with the barometer and the microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525993.9U CN210297053U (en) | 2019-09-12 | 2019-09-12 | Special structure's cabinet of aerifing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525993.9U CN210297053U (en) | 2019-09-12 | 2019-09-12 | Special structure's cabinet of aerifing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297053U true CN210297053U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921525993.9U Active CN210297053U (en) | 2019-09-12 | 2019-09-12 | Special structure's cabinet of aerifing |
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| CN (1) | CN210297053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518485A (en) * | 2019-09-12 | 2019-11-29 | 宁波耐森电气科技有限公司 | A kind of gas-filling cabinet of special construction |
-
2019
- 2019-09-12 CN CN201921525993.9U patent/CN210297053U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518485A (en) * | 2019-09-12 | 2019-11-29 | 宁波耐森电气科技有限公司 | A kind of gas-filling cabinet of special construction |
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