CN210663571U - SF6 gas recovery device - Google Patents
SF6 gas recovery device Download PDFInfo
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- CN210663571U CN210663571U CN201921456311.3U CN201921456311U CN210663571U CN 210663571 U CN210663571 U CN 210663571U CN 201921456311 U CN201921456311 U CN 201921456311U CN 210663571 U CN210663571 U CN 210663571U
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Abstract
The utility model discloses a SF6The gas recovery device comprises a recovery gas inlet pipe and a liquid storage tank, wherein SF is arranged in the recovery gas inlet pipe along the middle edge6The gas flowing in the gas passage direction is sequentially connected in series with SF for compression6Compressor for gas and method for compressing SF6Condensing the gas to liquid SF6The condensing unit of (2); the liquid storage tank is communicated with the outlet of the recovery air inlet pipe to store liquid SF6. The utility model discloses can retrieve, store SF well6And convenience is provided for the maintenance of the electrical equipment.
Description
Technical Field
The utility model relates to a SF6A gas recovery device.
Background
When filled with SF6When the electrical equipment of (2) is overhauled, SF to be filled therein is required6The gas is recovered and stored, but the prior recovery equipment is used for recovering SF6The gas process has the problems of inconvenient recovery, inconvenient storage and the like.
Disclosure of Invention
The utility model aims to solve the technical problem that the defect of the prior art is overcome, and an SF is provided6A gas recovery device which can well recover and store SF6And convenience is provided for the maintenance of the electrical equipment.
In order to solve the above-mentioned technical problems,the technical scheme of the utility model is that: SF (sulfur hexafluoride)6A gas recovery device, comprising:
a recycling air inlet pipe, wherein the middle edge SF of the recycling air inlet pipe6The gas flowing in the gas passage direction is sequentially connected in series with SF for compression6Compressor for gas and method for compressing SF6Condensing the gas to liquid SF6The condensing unit of (2);
a liquid storage tank communicated with the outlet of the recovery air inlet pipe for storing liquid SF6。
Further to enable to SF6Filtering is carried out, SF6The gas recovery device further includes:
at least one filter unit connected in series in the recovery inlet line for filtering SF6Gas or liquid SF6An impurity filter for impurities in the slurry;
and/or at least one filter unit connected in series to the portion of the recovery inlet line between the compressor and the storage tank and used for filtering the SF mixture6Gas or liquid SF6The oil-gas separation filter of the compressor oil.
Further to prevent air in the recovery inlet duct from affecting the recovered SF6Purity of (SF)6The gas recovery device further comprises a vacuum tube, an inlet of the vacuum tube is communicated with the recovery air inlet tube, and a vacuum pump for vacuumizing the vacuum tube and the recovery air inlet tube is connected to the vacuum tube.
Further, in order to more conveniently seal the inlet of the recovery air inlet pipe when the vacuum pump works, the inlet of the recovery air inlet pipe is provided with a first valve for controlling the opening and the closing of the inlet; and/or to prevent SF recovery in the recovery inlet duct6In the course of gas, SF6The gas enters the vacuum-pumping pipe, and a second valve for controlling the on-off is arranged at the position of the vacuum-pumping pipe communicated with the recycling air inlet pipe.
Further, the vacuum degree, SF, in the vacuum-pumping pipe can be conveniently detected after vacuum-pumping6The gas recovery device also comprises a vacuum gauge which is directly or indirectly arranged in the recovery air inlet pipe and is used for detecting the vacuum degree in the recovery air inlet pipe.
Further, the vacuum gauge is installed in the recycling air inlet pipe through a vacuum detection pipe, an inlet of the vacuum detection pipe is communicated with the recycling air inlet pipe, the vacuum gauge is installed in the recycling air inlet pipe, and a third valve for controlling on-off is installed on the portion, located between the recycling air inlet pipe and the vacuum gauge, of the vacuum detection pipe.
Further facilitate the SF in the liquid storage tank6Charging into SF6In electrical equipment, SF6The gas recovery device also comprises an inflation outlet pipe communicated with the liquid storage tank, and a fourth valve for controlling the on-off is arranged on the inflation outlet pipe.
Further in order to ensure that the liquid storage tank can be used for SF in severe cold areas6The electrical equipment carries out inflation operation, and a heating device is connected in series in the inflation outlet pipe; or the outer peripheral wall of the air inflation outlet pipe is wrapped with a heating element.
Further, to make it possible to control the SF mixed into the liquid storage tank6The gas is recompressed, SF6The gas recovery device further comprises SF6Gas return pipe, said SF6The gas return pipe is communicated between the liquid storage tank and the part of the recovery air inlet pipe which is positioned in front of the compressor so as to mix SF in the liquid storage tank6Gas passing through SF6The gas return pipe enters the recovery gas inlet pipe and is recompressed by the compressor.
Further to keep the temperature in the liquid storage tank low to prevent liquid SF6And the liquid is gasified after entering the liquid storage tank, and an evaporator for cooling the liquid storage tank is arranged in the liquid storage tank.
After the technical scheme is adopted, the inlet of the air inlet pipe is recovered and filled with SF6The gas is communicated with the electrical equipment, and the compressor sucks the low-temperature and low-pressure SF in the electrical equipment6Compressing the gas and then discharging the gas into a condensing device6Gas, condensing unit to SF entering therein6The gas is condensed to make SF6Condensing the gas to liquid SF6The liquid storage tank is connected with the liquid SF6Store, the utility model discloses can retrieve, store SF well6The structure is simple, and the implementation is easy;the utility model discloses a retrieve the intake pipe and still establish ties at least one impurity filter and at least one oil-gas separation filter, can prevent effectively that impurity in the electrical equipment and compressor oil in the compressor from getting into in the liquid storage tank, can guarantee SF well6The purity of the gas can better play the roles of arc extinction and insulation; the utility model discloses still be provided with the vacuum pump, can be in retrieving SF6Before gas is generated, the recovery air inlet pipe and each device are vacuumized by a vacuum pump to prevent air in the recovery air inlet pipe and each device from mixing into SF6In the gas; the liquid storage tank of the utility model is also communicated with an inflation outlet pipe, which can directly inflate the electrical equipment, thus being convenient and trouble-saving; the utility model discloses a liquid storage pot passes through SF6The gas return pipe is communicated with the part of the recovery air inlet pipe positioned in front of the compressor, so that SF mixed into the liquid storage tank6The gas can be returned to the gas inlet pipe and compressed again by the compressor, thereby preventing SF6The occupied space of the gas in the liquid storage tank can be increased, and the liquid SF in the liquid storage tank can be increased6The amount of storage of (a).
Drawings
FIG. 1 shows the SF of the present invention6A system schematic diagram of a gas recovery device.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in FIG. 1, a SF6A gas recovery device, comprising:
a recycling air inlet pipe 1, wherein the middle edge SF of the recycling air inlet pipe 16The gas flowing in the gas passage direction is sequentially connected in series with SF for compression6Compressor 2 for gas and method for compressing SF6Condensing the gas to liquid SF6The condensing means 3;
a liquid storage tank 4, wherein the liquid storage tank 4 is communicated with the outlet of the recovery air inlet pipe 1 to store liquid SF6。
In the present embodiment, the condensing device 3 is a heat exchanger, but is not limited thereto.In order to keep the temperature in the storage tank 4 low to prevent the liquid SF6And the gas is gasified after entering the liquid storage tank 4, and an evaporator for cooling the liquid storage tank 4 is arranged in the liquid storage tank 4.
As shown in fig. 1, in order to match SF6Filtering is carried out, SF6The gas recovery device further includes:
at least one for filtering SF and connected in series in the recovery intake pipe 16Gas or liquid SF6An impurity filter 5 for removing impurities;
and/or at least one filter in series in the portion of the recovery intake pipe 1 between the compressor 2 and the storage tank 4 for filtering the SF mixture6Gas or liquid SF6And an oil-gas separation filter 6 for the compressor oil.
As shown in FIG. 1, to prevent the air in the recovery intake pipe 1 from affecting the recovered SF6Purity of (SF)6The gas recovery device further comprises a vacuum tube 7, an inlet of the vacuum tube 7 is communicated with the recovery air inlet tube 1, and the vacuum tube 7 is connected with a vacuum pump 8 for vacuumizing the vacuum tube 7 and the recovery air inlet tube 1.
As shown in fig. 1, in order to more conveniently seal the inlet of the recovery intake pipe 1 when the vacuum pump 8 is working, the inlet of the recovery intake pipe 1 is provided with a first valve 9 for controlling the opening and closing of the recovery intake pipe; to prevent SF recovery in the recovery intake pipe 16In the course of gas, SF6The gas enters the vacuum tube 7, and a second valve 10 for controlling the on-off is arranged at the position of the vacuum tube 7 communicated with the recycling air inlet pipe 1.
Specifically, when the vacuum pump 8 performs the vacuum pumping operation, the first valve 9 is closed, and the second valve 10 is opened; SF recovery from recovery air inlet pipe6When gas is present, the first valve 9 is opened and the second valve 10 is closed.
As shown in FIG. 1, SF is used for convenience in detecting the degree of vacuum in the evacuation tube 7 after evacuation6The gas recovery device further includes a vacuum gauge 11 that is directly or indirectly installed in the recovery intake pipe 1 and is used to detect the degree of vacuum in the recovery intake pipe 1.
As shown in fig. 1, the vacuum gauge 11 is mounted on the recovery air intake pipe 1 through a vacuum detection pipe 12, an inlet of the vacuum detection pipe 12 is communicated with the recovery air intake pipe 1, the vacuum gauge 11 is mounted on the recovery air intake pipe 1, and a third valve 13 for controlling on-off is mounted on a portion of the vacuum detection pipe 12 between the recovery air intake pipe 1 and the vacuum gauge 11.
Specifically, the third valve 13 is opened when the degree of vacuum needs to be observed, and the third valve 13 is closed when the third valve 13 does not need to be observed.
As shown in FIG. 1, SF in the tank 4 is stored for convenience6Charging into SF6In electrical equipment, SF6The gas recovery device also comprises an inflation gas outlet pipe 14 communicated with the liquid storage tank 4, and a fourth valve 15 for controlling the on-off is arranged on the inflation gas outlet pipe 14.
Specifically, the recovery intake pipe 1 recovers SF6When gas is present, the fourth valve 15 is closed.
As shown in FIG. 1, in order to allow the storage tank 4 to cope with SF in severe cold regions6The electrical equipment carries out inflation operation, and a heating device is connected in series in the inflation outlet pipe 14; or the outer peripheral wall of the inflation and air outlet pipe 14 is wrapped with a heating element.
As shown in fig. 1, in order to make it possible to mix the SF in the storage tank 46The gas is recompressed, SF6The gas recovery device further comprises SF6 Gas return line 16, said SF6The gas return pipe 16 communicates between the liquid storage tank 4 and the portion of the recovery intake pipe 1 located before the compressor 2 so as to mix the SF in the liquid storage tank 46Gas passing through SF6The gas return line 16 enters the recovery intake line 1 and is recompressed by the compressor 2. In particular, the SF6The gas return pipe 16 is connected with a fifth valve 17 for controlling the on-off.
The working principle of the utility model is as follows:
the inlet of the recovery air inlet pipe 1 is filled with SF6The gas electrical equipment is communicated, and the compressor 2 sucks the low-temperature and low-pressure SF in the electrical equipment6Compressing the gas and then discharging the high-temperature high-pressure SF into a condensing device 36Gas, condensing unit 3 for SF introduced therein6The gas is condensed to make SF6Condensing the gas to liquid SF6The liquid storage tank 4 is used for storing the liquid SF6Store, the utility model discloses can retrieve, store SF well6The structure is simple, and the implementation is easy; the utility model discloses a retrieve intake pipe 1 and still establish ties and have at least one impurity filter 5 and at least one oil-gas separation filter 6, can prevent effectively that impurity in the electrical equipment and compressor oil in the compressor 2 from getting into liquid storage pot 4 in, can guarantee SF well6The purity of the gas can better play the roles of arc extinction and insulation; the utility model discloses still be provided with vacuum pump 8, can be in retrieving SF6Before the gas is exhausted, the vacuum pump 8 is used for vacuumizing the recycling air inlet pipe 1 and each device to prevent the air in the recycling air inlet pipe and each device from being mixed with SF6In the gas; the liquid storage tank 4 of the utility model is also communicated with an air inflation outlet pipe 14, which can directly inflate the electrical equipment, thus being convenient and trouble-saving; the utility model discloses a liquid storage pot 4 passes through SF6The gas return pipe 16 is in communication with the portion of said recovery intake pipe 1 located before the compressor 2, so as to mix the SF in the tank 46The gas can return to the recovery gas inlet pipe 1 and be recompressed by the compressor 2, thereby preventing SF6The space occupied by the gas in the liquid storage tank 4 can be increased to increase the liquid SF in the liquid storage tank 46The amount of storage of (a).
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. SF (sulfur hexafluoride)6Gas recovery device, characterized in that it comprises:
a recycling air inlet pipe (1), wherein SF is arranged in the recycling air inlet pipe (1)6The gas flowing in the gas passage direction is sequentially connected in series with SF for compression6Compressor (2) for gas and method for compressing SF6Condensing the gas to liquid SF6The condensing means (3);
a liquid storage tank (4), wherein the liquid storage tank (4) is communicated with the outlet of the recovery air inlet pipe (1) to store liquid SF6。
2. SF according to claim 16The gas recovery device is characterized by further comprising:
at least one filter for filtering SF, connected in series in the recovery intake pipe (1)6Gas or liquid SF6An impurity filter (5) for removing impurities contained in the raw material;
and/or at least one filter element connected in series in the portion of the recovery inlet pipe (1) between the compressor (2) and the storage tank (4) and intended to filter the SF mixture6Gas or liquid SF6An oil-gas separation filter (6) for the compressor oil in (1).
3. SF according to claim 16The gas recovery device is characterized by further comprising a vacuum tube (7), an inlet of the vacuum tube (7) is communicated with the recovery air inlet tube (1), and a vacuum pump (8) used for vacuumizing the vacuum tube (7) and the recovery air inlet tube (1) is connected to the vacuum tube (7).
4. SF according to claim 36A gas recovery device is characterized in that,the inlet of the recovery air inlet pipe (1) is provided with a first valve (9) for controlling the opening and the closing of the recovery air inlet pipe; and/or a second valve (10) for controlling the on-off is arranged at the position of the vacuumizing pipe (7) communicated with the recycling air inlet pipe (1).
5. SF according to claim 36The gas recovery device is characterized by further comprising a vacuum gauge (11) which is directly or indirectly arranged on the recovery air inlet pipe (1) and used for detecting the vacuum degree in the recovery air inlet pipe (1).
6. SF according to claim 56The gas recovery device is characterized in that the vacuum gauge (11) is installed in a recovery air inlet pipe (1) through a vacuum detection pipe (12), the inlet of the vacuum detection pipe (12) is communicated with the recovery air inlet pipe (1), the vacuum gauge (11) is installed in the recovery air inlet pipe (1), and a third valve (13) for controlling on-off is installed on the portion, located between the recovery air inlet pipe (1) and the vacuum gauge (11), of the vacuum detection pipe (12).
7. SF according to claim 16The gas recovery device is characterized by further comprising an inflation air outlet pipe (14) communicated with the liquid storage tank (4), and a fourth valve (15) for controlling on-off is mounted on the inflation air outlet pipe (14).
8. SF according to claim 76The gas recovery device is characterized in that a heating device is connected in series in the inflation outlet pipe (14); or the outer peripheral wall of the inflation air outlet pipe (14) is wrapped with a heating element.
9. SF according to claim 16The gas recovery device is characterized by also comprising SF6Gas return line (16), said SF6The gas return pipe (16) is communicated between the liquid storage tank (4) and the part of the recovery air inlet pipe (1) which is positioned in front of the compressor (2) so as to mix SF in the liquid storage tank (4)6Gas passing through SF6The gas return pipe (16) enters the recovery gas inlet pipe (1) and is recompressed by the compressor (2).
10. SF according to claim 16The gas recovery device is characterized in that an evaporator used for cooling the liquid storage tank (4) is arranged in the liquid storage tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921456311.3U CN210663571U (en) | 2019-09-03 | 2019-09-03 | SF6 gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921456311.3U CN210663571U (en) | 2019-09-03 | 2019-09-03 | SF6 gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210663571U true CN210663571U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921456311.3U Active CN210663571U (en) | 2019-09-03 | 2019-09-03 | SF6 gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210663571U (en) |
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2019
- 2019-09-03 CN CN201921456311.3U patent/CN210663571U/en active Active
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