CN213965874U - For SF6Solid-state purification storage tank device for gas recovery - Google Patents
For SF6Solid-state purification storage tank device for gas recovery Download PDFInfo
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- CN213965874U CN213965874U CN202022790711.7U CN202022790711U CN213965874U CN 213965874 U CN213965874 U CN 213965874U CN 202022790711 U CN202022790711 U CN 202022790711U CN 213965874 U CN213965874 U CN 213965874U
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Abstract
The utility model discloses a be used for SF6A solid purification storage tank device for gas recovery, belonging to SF6The field of gas recovery devices. The utility model discloses a solid-state purification storage tank device, including a jar body fixed frame, solidification jar and liquefied tank, combine liquefied tank and solidification jar as an organic whole through a jar body fixed frame for whole storage tank device structure is compacter, and liquefied tank and solidification jar utilize one way liquid nitrogen refrigeration coil to refrigerate liquefied tank and solidification jar, make full use of the internal energy of liquid nitrogen, set up simultaneously on liquefied tank and solidification jarHas independent air exhaust port, is convenient for the vacuum-pumping treatment of the liquefaction tank and the solidification tank, simplifies the connecting pipeline between the liquefaction tank and the solidification tank, and improves SF6The recovery rate and purification purity of the gas; in addition, the traditional heating device is changed into the heating coil arranged inside the curing tank, so that the problem that the inner wall of the tank body is easily deformed and damaged due to the fact that the inner wall of the curing tank is directly heated is solved, and SF is improved6Stability and reliability of gas recovery.
Description
Technical Field
The utility model relates to a SF6Gas recovery device, more particularly to a device for SF6Solid purification storage tank device of gas recovery.
Background
In the electric power industry, sulfur hexafluoride (SF)6) The gas has excellent insulation and arc extinguishing performance, so the gas is widely applied to various power equipment, such as gas insulated fully-enclosed switchgear (GIS) of high-voltage electrical switchgear, transformers, gas-filled cables and the like. SF6The gas is an invisible, colorless, odorless inert gas, and is a greenhouse gas, leaked SF6The gas can pollute and destroy the atmospheric environment, and the greenhouse effect is increased.
When GIS switch equipment is overhauled, fault-treated or eliminated, SF in electrical equipment needs to be treated6Gas or SF6Recovering and purifying the mixed gas of/N2 (nitrogen gas) to obtain SF6The gas is recycled after purification to prevent SF6Gas leakage causes harm while reducing SF6The cost of the gas used. At present, SF6The recovery and purification method of the mixed gas mainly comprises a pressure swing adsorption method, a polymer film separation method, a liquefaction method, a solidification method and the like, wherein the pressure swing adsorption method is used for treating SF6Recovering SF gas mixture with low gas content6The gas concentration is not high, and the pure SF is difficult to obtain6A gas; although the polymer film separation method can obtain SF with higher content6Gas, but the polymer film used is more costly, increasing SF6Gas recovery and purification costs; the liquefaction method can also obtain SF with higher purity6Gas, but after gas-liquid separation, the mixed gas contains a relatively high SF content6Saturated steam, relatively low recovery rate, and if not discharged, not only wasting SF6Gas, and can cause environmental pollution. In contrast, the curing process readily converts SF in the solid state6Separated from gaseous N2, has high purification purity (over 99.9%), and SF6The recovery rate of the gas is relatively high and the high pressure problem of the liquefaction method does not exist.
The Chinese patent number ZL201210283769.X, the publication date of authorization is 8 months and 6 days in 2014, and the name of the invention creation is as follows: a sulfur hexafluoride gas purification method and purification solidification tank thereof, the application relates to a sulfur hexafluoride gas purification method and purification solidification tank, wherein sulfur hexafluoride is sucked into a sulfur hexafluoride decomposition product filtering air chamber by a compressor, water, decomposition products and toxic substances in the sulfur hexafluoride are adsorbed by using a special adsorbent, then the sulfur hexafluoride gas is pressurized and refrigerated to be liquefied, liquid sulfur hexafluoride enters a solidification tank, liquid nitrogen is used for further cooling the sulfur hexafluoride, the sulfur hexafluoride becomes solid after the temperature is lower than the solidification point of the sulfur hexafluoride, at the moment, the air, carbon dioxide and other impurity gases are still gases, and the impurity gases are pumped out by using a vacuumizing device; and starting the heating device to melt the solid to obtain high-purity sulfur hexafluoride liquid, pumping the liquid sulfur hexafluoride out of the liquid outlet by using the special compression mechanism, and refilling or filling the liquid sulfur hexafluoride into the steel cylinder. The application discloses a method for solidifying and purifying sulfur hexafluoride and provides a special purifying and solidifying tank, but the special purifying and solidifying tank has the following problems:
1. the curing tank is lack of an independent air pumping port, and after curing, an air inlet is used as the air pumping port, and complex valve paths are needed to be matched with switching control; in addition, the heater is arranged in the heat insulation layer, the inner wall of the tank body is directly contacted with the heater, the inner wall of the tank body is strongly changed by cold and heat alternately, deformation or damage is easy to generate, and the requirements on the quality of the inner wall of the tank body, such as strength and the like, are higher;
2. this application discloses only one solidification tank and does not disclose the liquefaction process and equipment of the liquid sulfur hexafluoride before entering the solidification tank.
Disclosure of Invention
1. Technical problem to be solved by the utility model
An object of the utility model is to provide a be used for SF6Solid purification storage tank device for gas recovery, aiming at SF6A solid-state purification process for gas provides a liquefied gas-solidification pair storage tank device, adopt the technical scheme of the utility model, combine liquefaction jar and solidification jar as an organic whole through jar body fixed frame for whole storage tank device structure is compacter, liquefied SF6Rely on gravity to get into solidification jar internal solidification by the intercommunication pipeline, and liquefied tank and solidification jar utilize same way liquid nitrogen refrigeration coil to refrigerate liquefied tank and solidification jar, make full use of the internal energy of liquid nitrogen, the different designs that utilize coil pipe density are convenient for control the temperature of liquefied tank and solidification jar, be provided with independent extraction opening simultaneously on liquefied tank and solidification jar, the evacuation of liquefied tank and solidification jar of being convenient for is handled, connecting tube between liquefied tank and the solidification jar has both been simplified, SF is improved6The recovery rate and purification purity of the gas; in addition, the traditional heating device is changed into the heating coil arranged inside the curing tank, so that the problem that the inner wall of the tank body is easily deformed and damaged due to the fact that the inner wall of the curing tank is directly heated is solved, and SF is improved6Stability and reliability of gas recovery.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a be used for SF6Solid-state purification storage tank device of gas recovery, including a jar body fixed frame, solidification jar and liquefaction jar respectively fixed mounting on jar body fixed frame, and the liquefaction jar is located the top of solidification jar, the upper end of liquefaction jar be equipped with SF6The gas inlet, the lower extreme of liquefaction jar be linked together through the intercommunication pipeline with the upper end of solidification jar, and be equipped with the intercommunication pipeline valve on the intercommunication pipeline, the lower extreme of solidification jar be equipped with SF6A canning opening; the upper parts of the solidification tank and the liquefaction tank are respectively provided with an air pumping port for pumping vacuum, and an air pumping port valve is arranged on the air pumping port; the solidification tank in be equipped with solidification jar refrigeration coil, the liquefaction tank in be equipped with liquefaction jar refrigeration coil, the liquid nitrogen export of solidification jar refrigeration coil on the solidification tank be linked together with the liquid nitrogen import of liquefaction jar refrigeration coil on the liquefaction tank, and the spiral pitch of solidification jar refrigeration coil in the solidification tank is less than the liquefaction jar refrigeration coilThe helical pitch of the tube within the liquefaction vessel; the curing tank is internally provided with a heating coil which is positioned on the inner side of the cooling coil of the curing tank.
Furthermore, the curing tank comprises a curing tank inner wall, a curing tank heat-insulating layer and a curing tank outer wall, wherein the curing tank outer wall is positioned on the outer side of the curing tank inner wall, and the curing tank heat-insulating layer is arranged in an interlayer formed between the curing tank inner wall and the curing tank outer wall; the liquefaction jar include liquefaction jar inner wall, liquefaction jar heat preservation and liquefaction jar outer wall, the liquefaction jar outer wall be located the outside of liquefaction jar inner wall, the liquefaction jar heat preservation locate the intermediate layer that forms between liquefaction jar inner wall and the liquefaction jar outer wall.
Furthermore, a curing tank mounting seat is arranged on the outer wall of the curing tank, and the curing tank is fixed on the tank body fixing frame through the curing tank mounting seat; the outer wall of the liquefaction tank is provided with a liquefaction tank mounting seat, and the liquefaction tank is fixed on the tank body fixing frame through the liquefaction tank mounting seat.
Furthermore, the upper parts of the solidification tank and the liquefaction tank are respectively provided with a temperature sensor, a pressure gauge and a safety relief valve.
Furthermore, the bottom of the tank body fixing frame is provided with a weighing device.
Furthermore, the liquid nitrogen inlet of the cooling coil of the solidification tank is positioned at the bottom of the solidification tank, the liquid nitrogen inlet is provided with a liquid nitrogen inlet valve, the liquid nitrogen outlet of the cooling coil of the liquefied tank is positioned at the top of the liquefied tank, and the liquid nitrogen outlet is provided with a liquid nitrogen outlet valve.
Furthermore, a communication pipeline between the liquefaction tank and the solidification tank, a pipeline exposed between the solidification tank refrigeration coil and the liquefaction tank refrigeration coil, and SF6The outer wall of the external pipeline of the canning opening is provided with heat insulation cotton.
Furthermore, the heating coil is connected with a heating device.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:
(1) the utility model discloses a be used for SF6Solid-state purification storage tank device of gas recovery, it includes a jar body fixed frame, solidification jar and liquefaction jar, combines liquefaction jar and solidification jar as an organic whole through a jar body fixed frame for whole storage tank device structure is compacter, and liquefied SF6Rely on gravity to get into solidification jar internal solidification by the intercommunication pipeline, and liquefied tank and solidification jar utilize same way liquid nitrogen refrigeration coil to refrigerate liquefied tank and solidification jar, make full use of the internal energy of liquid nitrogen, the different designs that utilize coil pipe density are convenient for control the temperature of liquefied tank and solidification jar, be provided with independent extraction opening simultaneously on liquefied tank and solidification jar, the evacuation of liquefied tank and solidification jar of being convenient for is handled, connecting tube between liquefied tank and the solidification jar has both been simplified, SF is improved6The recovery rate and purification purity of the gas; in addition, the traditional heating device is changed into the heating coil arranged inside the curing tank, so that the problem that the inner wall of the tank body is easily deformed and damaged due to the fact that the inner wall of the curing tank is directly heated is solved, and SF is improved6Stability and reliability of gas recovery;
(2) the utility model discloses a be used for SF6The solid purification storage tank device for gas recovery comprises a solidification tank inner wall, a solidification tank heat insulation layer and a solidification tank outer wall, wherein the liquefaction tank comprises a liquefaction tank inner wall, a liquefaction tank heat insulation layer and a liquefaction tank outer wall, the solidification tank and the liquefaction tank adopt an inner-outer double-layer tank body structure, and the inner parts of the solidification tank and the liquefaction tank are respectively provided with the heat insulation layer, so that the structural strength of the liquefaction tank and the solidification tank is improved, the service lives of the liquefaction tank and the solidification tank are ensured, meanwhile, the temperature in the tank body can be effectively maintained, and the cold energy consumption is reduced;
(3) the utility model discloses a be used for SF6The solid purification storage tank device for gas recovery is characterized in that a curing tank mounting seat is arranged on the outer wall of a curing tank of the solid purification storage tank device, and the curing tank is fixed on a tank body fixing frame through the curing tank mounting seat; a liquefied tank mounting seat is arranged on the outer wall of the liquefied tank, and the liquefied tank is fixed on the tank body fixing frame through the liquefied tank mounting seat; the solidification tank and the liquefaction tank are fixed by the mounting seat, so that the liquefaction tank and the solidification tank are conveniently fixed in the tank bodyThe fixed frame is arranged and is firmly and stably arranged;
(4) the utility model discloses a be used for SF6The upper parts of a solidification tank and a liquefaction tank of the solid purification storage tank device for gas recovery are respectively provided with a temperature sensor, a pressure gauge and a safety relief valve, so that the temperature and the pressure in the tank body can be monitored in real time, and the normal and safe operation of the solidification tank and the liquefaction tank is ensured;
(5) the utility model discloses a be used for SF6Gas recovery's solid-state purification storage tank device, its jar body fixed frame's bottom is equipped with weighing device, compares with current solidification jar mode of weighing, weighs solidification jar and liquefaction jar together, has avoided solidification jar and liquefaction jar to be connected the back and influence the weighing of solidification jar, has improved solid-state SF in the solidification jar6The weighing accuracy of (2);
(6) The utility model discloses a be used for SF6A liquid nitrogen inlet of a refrigerating coil of a solidification tank of the solid-state purification storage tank device for gas recovery is positioned at the bottom of the solidification tank, the liquid nitrogen inlet is provided with a liquid nitrogen inlet valve, a liquid nitrogen outlet of the refrigerating coil of a liquefied tank is positioned at the top of the liquefied tank, and the liquid nitrogen outlet is provided with a liquid nitrogen outlet valve, so that the on-off control and the liquid nitrogen flow regulation of the liquid nitrogen are facilitated, and the temperature control of the solidification tank and the temperature control of the liquefied tank are facilitated;
(7) the utility model discloses a be used for SF6Solid purification storage tank device for gas recovery, communication pipeline between liquefaction tank and solidification tank, pipeline exposed between solidification tank refrigeration coil and liquefaction tank refrigeration coil, and SF6The outer wall of the external pipeline of the canning opening is provided with heat insulation cotton, so that frosting of the low-temperature pipeline is effectively prevented, and cold energy consumption is reduced.
Drawings
FIG. 1 shows a diagram of a SF solution of the present invention6The structure of the solid purification storage tank device for gas recovery is shown schematically.
The reference numerals in the schematic drawings illustrate:
1. a tank body fixing frame; 2. a curing tank; 2-1, curing the inner wall of the tank; 2-2, curing tank heat-insulating layer; 2-3, curing the outer wall of the tank; 2-4, a curing tank mounting seat; 3. a liquefaction tank; 3-1, the inner wall of the liquefaction tank; 3-2, liquidA heat-insulating layer of the melting tank; 3-3, the outer wall of the liquefaction tank; 3-4, a liquefied tank mounting seat; 4. a curing tank refrigeration coil; 4-1, liquid nitrogen inlet; 4-2, a liquid nitrogen inlet valve; 5. a liquefaction tank refrigeration coil; 5-1, liquid nitrogen outlet; 5-2, a liquid nitrogen outlet valve; 6. a valve communicated with the pipeline; 7. SF6A gas inlet; 8. an air inlet valve; 9. SF6A canning opening; 10. a canning port valve; 11. a heating coil; 12. a heating device; 13. an extraction port valve; 14. a temperature sensor; 15. a pressure gauge; 16. a safety relief valve; 17. and a weighing device.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
[ examples ]
Referring to FIG. 1, a method for SF in this embodiment6The solid purification storage tank device for gas recovery comprises a tank body fixing frame 1, a solidification tank 2 and a liquefaction tank 3, wherein the tank body fixing frame 1 can be a rectangular frame, specifically a welded frame or a section bar assembled frame, the solidification tank 2 and the liquefaction tank 3 are respectively fixedly arranged on the tank body fixing frame 1, and the liquefaction tank 3 is positioned above the solidification tank 2, so that the solidification tank 2 and the liquefaction tank 3 are integrated; the upper end of the liquefaction tank 3 is provided with SF6Gas inlet 7, SF6The gas inlet 7 is provided with an air inlet valve 8, the lower end of the liquefaction tank 3 is communicated with the upper end of the solidification tank 2 through a communicating pipeline, a communicating pipeline valve 6 is arranged on the communicating pipeline, and liquefied SF in the liquefaction tank 36Can be under the action of gravity through in the solidification jar 2 of intercommunication pipeline inflow below, intercommunication pipeline valve 6 can realize the intercommunication or the disconnection of solidification jar 2 and liquefaction jar 3 through the switching, and after solidification jar 2 and liquefaction jar 3 closed through intercommunication pipeline valve 6, solidification jar 2 and liquefaction jar 3 form independent space, and the independent evacuation in both of being convenient for, the lower extreme of solidification jar 2 is equipped with SF6Canning mouth 9, SF6A can opening valve 10 is arranged at the can opening 9, which is convenient for recovering the purified SF6Can be filled and reused; the upper parts of the solidification tank 2 and the liquefaction tank 3 are respectively provided with an air pumping hole for vacuumizing, an air pumping hole valve 13 is arranged on the air pumping hole, and air is pumpedThe ports are respectively connected with a vacuum-pumping system, so that the vacuum-pumping treatment is conveniently carried out on the solidification tank 2 and the liquefaction tank 3, the impurity gas which is not solidified or liquefied is pumped out, and the SF is improved6Gas recovery and purification precision; a solidification tank refrigeration coil 4 is arranged in the solidification tank 2, a liquefied tank refrigeration coil 5 is arranged in the liquefied tank 3, a liquid nitrogen outlet of the solidification tank refrigeration coil 4 on the solidification tank 2 is communicated with a liquid nitrogen inlet of the liquefied tank refrigeration coil 5 on the liquefied tank 3, the spiral pitch of the solidification tank refrigeration coil 4 in the solidification tank 2 is smaller than that of the liquefied tank refrigeration coil 5 in the liquefied tank 3, namely, the coiling density of the solidification tank refrigeration coil 4 in the solidification tank 2 is larger than that of the liquefied tank refrigeration coil 5 in the liquefied tank 3, and liquid nitrogen enters the liquefied tank 3 for continuous heat exchange after heat exchange in the solidification tank 2, so that the temperature of the solidification tank 2 is lower than that of the liquefied tank 3, and the internal energy of the liquid nitrogen is fully utilized; be equipped with heating coil 11 in curing tank 2, heating coil 11 is located curing tank refrigeration coil 4's inboard, and heating coil 11 is not direct contact curing tank 2's inside wall, has solved direct heating curing tank inner wall and has easily caused the problem of jar internal wall deformation damage, has improved SF6Stability and reliability of gas recovery. Further, a liquid nitrogen inlet 4-1 of the curing tank refrigeration coil 4 is located at the bottom of the curing tank 2, a liquid nitrogen inlet valve 4-2 is arranged at the liquid nitrogen inlet 4-1, a liquid nitrogen outlet 5-1 of the liquefied tank refrigeration coil 5 is located at the top of the liquefied tank 3, and a liquid nitrogen outlet valve 5-2 is arranged at the liquid nitrogen outlet 5-1, so that on-off control and liquid nitrogen flow regulation of liquid nitrogen are facilitated, and temperature control of the curing tank 2 and the liquefied tank 3 is facilitated. One for SF of the embodiment6Solid-state purification storage tank device of gas recovery combines liquefaction jar and solidification jar through jar body fixed frame organic and as an organic whole for whole storage tank device structure is compacter, and liquefied SF6Rely on gravity to get into solidification jar internal solidification by the intercommunication pipeline, and liquefied tank and solidification jar utilize same way liquid nitrogen refrigeration coil pipe to refrigerate liquefied tank and solidification jar, make full use of the internal energy of liquid nitrogen, the different designs that utilize coil pipe density are convenient for control the temperature of liquefied tank and solidification jar, be provided with independent extraction opening simultaneously on liquefied tank and solidification jar, the evacuation of liquefied tank and solidification jar of being convenient for is handled, both liquefied tank and solidification jar have been simplifiedThe SF is improved by the connecting pipeline between6Recovery and purification purity of the gas.
As shown in fig. 1, in this embodiment, the curing tank 2 includes a curing tank inner wall 2-1, a curing tank insulating layer 2-2, and a curing tank outer wall 2-3, the curing tank outer wall 2-3 is located outside the curing tank inner wall 2-1, and the curing tank insulating layer 2-2 is disposed in an interlayer formed between the curing tank inner wall 2-1 and the curing tank outer wall 2-3; the liquefaction tank 3 comprises a liquefaction tank inner wall 3-1, a liquefaction tank heat-insulating layer 3-2 and a liquefaction tank outer wall 3-3, the liquefaction tank outer wall 3-3 is located on the outer side of the liquefaction tank inner wall 3-1, and the liquefaction tank heat-insulating layer 3-2 is arranged in an interlayer formed between the liquefaction tank inner wall 3-1 and the liquefaction tank outer wall 3-3. Solidification jar 2 and liquefaction jar 3 all adopt inside and outside double-deck tank structure, and inside all is equipped with the heat preservation, have improved the structural strength of liquefaction jar 3 and solidification jar 2, have guaranteed the life of liquefaction jar 3 and solidification jar 2, can effectively maintain jar internal portion's temperature simultaneously, reduce cold energy consumption. In order to facilitate the installation of the curing tank 2 and the liquefaction tank 3, a curing tank installation seat 2-4 is arranged on the outer wall 2-3 of the curing tank 2, and the curing tank 2 is fixed on the tank body fixing frame 1 through the curing tank installation seat 2-4; the outer wall 3-3 of the liquefaction tank 3 is provided with a liquefaction tank mounting seat 3-4, and the liquefaction tank 3 is fixed on the tank body fixing frame 1 through the liquefaction tank mounting seat 3-4. Adopt the mount pad to fix solidification jar 2 and liquefaction jar 3, made things convenient for liquefaction jar 3 and solidification jar 2 to install on jar body fixed frame 1, and the installation is firm stable.
As shown in fig. 1, in this embodiment, the upper portions of the solidification tank 2 and the liquefaction tank 3 are respectively provided with a temperature sensor 14, a pressure gauge 15 and a safety relief valve 16, the temperature sensor 14 is used for monitoring the temperature in the solidification tank 2 and the liquefaction tank 3, the pressure gauge 15 is used for monitoring the pressure in the solidification tank 2 and the liquefaction tank 3, the safety relief valve 16 is used for relieving the pressure when the pressure in the solidification tank 2 and the liquefaction tank 3 is too high, the safety of the tank body is ensured, and the normal and safe operation of the solidification tank 2 and the liquefaction tank 3 is ensured by monitoring the temperature and the pressure in the tank body in real time. A communication pipeline between the liquefaction tank 3 and the solidification tank 2, a pipeline exposed between the solidification tank refrigeration coil 4 and the liquefaction tank refrigeration coil 5, and SF6The outer walls of the external pipelines of the canning openings 9 are all provided with heat-insulating cotton, thereby effectively preventingThe frosting of the low-temperature pipeline reduces the cold energy consumption. The heating coil 11 is connected with a heating device 12, the heating coil 11 can adopt an electric heating pipe, the heating device 12 is a power supply and a heating control circuit, and the heating temperature of the heating coil 11 is controlled by the heating device 12. Be equipped with weighing device 17 in jar body fixed frame 1's bottom, weighing device 17 directly weighs jar body fixed frame 1, curing tank 2 and liquefaction jar 3's weight, compares with current curing tank mode of weighing, weighs curing tank 2 and liquefaction jar 3 together, has avoided curing tank 2 and liquefaction jar 3 to be connected the back and has influenced weighing of curing tank 2, has improved solid-state SF in curing tank 26The accuracy of the weighing.
One for SF of the embodiment6The solid purification method of the solid purification storage tank device for gas recovery can be found in 'a sulfur hexafluoride gas purification method and purification solidification tank thereof' disclosed in patent ZL201210283769.X, and the dried and adsorbed SF is subjected to drying and adsorption treatment6The mixed gas passes through SF6A gas inlet 7 is fed into the liquefaction tank 3, SF6Cooling and liquefying the gas in a liquefying tank 3 to obtain liquid SF6Flows into the curing tank 2 through the communicating pipeline, is further cooled and then cured in the curing tank 2, after the curing is finished, the communicating pipeline valve 6 and the air inlet valve 8 are closed, the independent pumping openings on the liquefaction tank 3 and the curing tank 2 are connected into a vacuum pumping system, and the mixed gas pumped out from the liquefaction tank 3 contains partial SF6Saturated gas, which may be mixed with SF6Mixing other mixtures in the plant and re-participating in SF6The gas is recovered, the mixed gas pumped out from the curing tank 2 can be emptied after being purified by a tail gas treatment system, and the solid SF remained in the curing tank 26Namely the pure sulfur hexafluoride. The pumping opening valve 13 and the communicating pipeline valve 6 of the curing tank 2 are closed, and the heating coil 11 is heated by the heating device 12, so that the solid SF is obtained6After melting, the recovered SF can be recycled through the canning opening valve 106Filling into steel cylinder for reuse. For convenient control, the air inlet valve 8, the communicating pipeline valve 6, the canning port valve 10, the air pumping port valve 13, the liquid nitrogen inlet valve 4-2 and the liquid nitrogen outlet valve 5-2 are all electric control valves, and are intelligently controlled by the control system according to the purification methodThe valve groups are opened and closed, and the operation is simpler and more convenient. Other control systems and structural designs of the solid-state purification method for sulfur hexafluoride gas are similar to those of the existing design, and are not described in detail herein.
The utility model discloses a be used for SF6A liquefied-solidified double storage tank device is provided, a liquefied tank and a solidified tank are organically combined into a whole through a tank body fixing frame, so that the whole storage tank device is more compact in structure, and liquefied SF (sulfur hexafluoride) is6Rely on gravity to get into solidification jar internal solidification by the intercommunication pipeline, and liquefied tank and solidification jar utilize same way liquid nitrogen refrigeration coil to refrigerate liquefied tank and solidification jar, make full use of the internal energy of liquid nitrogen, the different designs that utilize coil pipe density are convenient for control the temperature of liquefied tank and solidification jar, be provided with independent extraction opening simultaneously on liquefied tank and solidification jar, the evacuation of liquefied tank and solidification jar of being convenient for is handled, connecting tube between liquefied tank and the solidification jar has both been simplified, SF is improved6The recovery rate and purification purity of the gas; in addition, the traditional heating device is changed into the heating coil arranged inside the curing tank, so that the problem that the inner wall of the tank body is easily deformed and damaged due to the fact that the inner wall of the curing tank is directly heated is solved, and SF is improved6Stability and reliability of gas recovery.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.
Claims (8)
1. For SF6Solid-state purification storage tank device of gas recovery, its characterized in that: including a jar body fixed frame (1), solidification jar (2) and liquefaction jar (3) respectively fixed mounting on jar body fixed frame (1), and liquefaction jar (3) are located the top of solidification jar (2), the upper end of liquefaction jar (3) be equipped with SF6Gas inlet (7), the lower extreme of liquefaction jar (3) be linked together through the intercommunication pipeline with the upper end of solidification jar (2), and be equipped with intercommunication pipeline valve (6) on the intercommunication pipeline, the lower extreme of solidification jar (2) be equipped with SF6A canning opening (9); the upper parts of the solidification tank (2) and the liquefaction tank (3) are respectively provided with an air pumping hole for pumping vacuum, and an air pumping hole valve (13) is arranged on the air pumping hole; a curing tank refrigeration coil (4) is arranged in the curing tank (2), a liquefied tank refrigeration coil (5) is arranged in the liquefied tank (3), a liquid nitrogen outlet of the curing tank refrigeration coil (4) on the curing tank (2) is communicated with a liquid nitrogen inlet of the liquefied tank refrigeration coil (5) on the liquefied tank (3), and the spiral pitch of the curing tank refrigeration coil (4) in the curing tank (2) is smaller than that of the liquefied tank refrigeration coil (5) in the liquefied tank (3); curing tank (2) in be equipped with heating coil (11), heating coil (11) be located the inboard of curing tank refrigeration coil (4).
2. Use for SF according to claim 16Solid-state purification storage tank device of gas recovery, its characterized in that: the curing tank (2) comprises a curing tank inner wall (2-1), a curing tank heat-insulating layer (2-2) and a curing tank outer wall (2-3), wherein the curing tank outer wall (2-3) is positioned on the curing tank inner wall(2-1), and the curing tank heat-insulating layer (2-2) is arranged in an interlayer formed between the inner wall (2-1) of the curing tank and the outer wall (2-3) of the curing tank; the liquefaction tank (3) comprises a liquefaction tank inner wall (3-1), a liquefaction tank heat-insulating layer (3-2) and a liquefaction tank outer wall (3-3), wherein the liquefaction tank outer wall (3-3) is located on the outer side of the liquefaction tank inner wall (3-1), and the liquefaction tank heat-insulating layer (3-2) is arranged in an interlayer formed between the liquefaction tank inner wall (3-1) and the liquefaction tank outer wall (3-3).
3. Use for SF according to claim 26Solid-state purification storage tank device of gas recovery, its characterized in that: a curing tank mounting seat (2-4) is arranged on the outer wall (2-3) of the curing tank (2), and the curing tank (2) is fixed on the tank body fixing frame (1) through the curing tank mounting seat (2-4); the outer wall (3-3) of the liquefaction tank (3) is provided with a liquefaction tank mounting seat (3-4), and the liquefaction tank (3) is fixed on the tank body fixing frame (1) through the liquefaction tank mounting seat (3-4).
4. Use for SF according to claim 36Solid-state purification storage tank device of gas recovery, its characterized in that: the upper parts of the solidification tank (2) and the liquefaction tank (3) are respectively provided with a temperature sensor (14), a pressure gauge (15) and a safety pressure release valve (16).
5. For use in SF according to claim 46Solid-state purification storage tank device of gas recovery, its characterized in that: the bottom of the tank body fixing frame (1) is provided with a weighing device (17).
6. Use for SF according to claim 56Solid-state purification storage tank device of gas recovery, its characterized in that: the liquid nitrogen inlet (4-1) of the solidification tank refrigeration coil (4) is located at the bottom of the solidification tank (2), the liquid nitrogen inlet (4-1) is provided with a liquid nitrogen inlet valve (4-2), the liquid nitrogen outlet (5-1) of the liquefaction tank refrigeration coil (5) is located at the top of the liquefaction tank (3), and the liquid nitrogen outlet (5-1) is provided with a liquid nitrogen outlet valve (5-2).
7. Use for SF according to claim 66Solid-state purification storage tank device of gas recovery, its characterized in that: a communication pipeline between the liquefaction tank (3) and the solidification tank (2), an exposed pipeline between the solidification tank refrigeration coil (4) and the liquefaction tank refrigeration coil (5), and SF6The outer walls of the external pipelines of the canning openings (9) are all provided with heat insulation cotton.
8. Use for SF according to claim 76Solid-state purification storage tank device of gas recovery, its characterized in that: the heating coil (11) is connected with a heating device (12).
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| CN202022790711.7U CN213965874U (en) | 2020-11-27 | 2020-11-27 | For SF6Solid-state purification storage tank device for gas recovery |
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| CN202022790711.7U CN213965874U (en) | 2020-11-27 | 2020-11-27 | For SF6Solid-state purification storage tank device for gas recovery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958869A (en) * | 2021-10-19 | 2022-01-21 | 国网安徽省电力有限公司电力科学研究院 | Zero-emission insulating gas purification treatment device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958869A (en) * | 2021-10-19 | 2022-01-21 | 国网安徽省电力有限公司电力科学研究院 | Zero-emission insulating gas purification treatment device and method |
| CN113958869B (en) * | 2021-10-19 | 2023-11-21 | 国网安徽省电力有限公司电力科学研究院 | Zero-emission insulating gas purifying treatment device and method |
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