Liquid oxygen reverse filling device of air separation equipment

Abstract

The utility model provides a liquid oxygen reverse filling device of air separation equipment, and belongs to the technical field of chemical engineering. Comprising a liquid oxygen storage tank, a first three-way pipe, a second three-way pipe, a third three-way pipe and a vehicle filling pump, and main pipelines which are communicated with one another are arranged between the liquid oxygen storage tank and the vehicle filling pump, between the vehicle filling pump and the third three-way pipe, between the liquid oxygen storage tank and the first three-way pipe, and between the first three-way pipe and the second three-way pipe; flange plates are fixedly connected to the two sides of the main pipeline and outlets of the first three-way pipe, the second three-way pipe and the third three-way pipe. According to the utility model, through the arrangement of the connecting mechanism, the main pipelines can be fixed without operating a plurality of bolts, the main pipelines can be mounted only by directly butting the main pipelines together, and the main pipelines can be dismounted by pushing the circular ring on the outer side when the main pipelines need to be dismounted, so that the operation is simple, and the mounting and dismounting time is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical industry technical field, especially relate to a liquid oxygen backfill device of air separation equipment. BACKGROUND

[0002] Air separation equipment is an industrial equipment that separates air into oxygen, nitrogen and rare gas by taking air as raw material, needs to compress air to the required pressure first to provide power for subsequent separation, removes moisture, carbon dioxide and other impurities after precooling and purification, and cools and liquefies in a heat exchanger, and after the liquefied air is separated into oxygen, nitrogen and other rare gases by fractional distillation, it can be stored for standby, and is widely used in chemical industry, metallurgy, medical treatment, electronics, energy and other fields.

[0003] The existing air separation equipment needs to be transported by means of flange-connected pipelines during operation, but the flange joints are fixed by a plurality of bolts, the installation is relatively cumbersome, cannot be disassembled when aging and cracking occur, and during the air separation equipment starting-up and liquid accumulation process, the cold energy generated by the expander is used to liquefy air to meet the low-temperature liquid required by the main cold heat exchange, the time for accumulating low-temperature liquid generally accounts for more than half of the total starting-up time of the air separation equipment and no product is output, and energy is wasted seriously, therefore, the present application provides a liquid oxygen backfill device of air separation equipment to meet the demand. UTILITARIAN CONTENT

[0004] The utility model solves the technical problem that the existing air separation equipment needs to be transported by means of flange-connected pipelines during operation, but the flange joints are fixed by a plurality of bolts, the installation is relatively cumbersome, cannot be disassembled when aging and cracking occur, and during the air separation equipment starting-up and liquid accumulation process, the cold energy generated by the expander is used to liquefy air to meet the low-temperature liquid required by the main cold heat exchange, the time for accumulating low-temperature liquid generally accounts for more than half of the total starting-up time of the air separation equipment and no product is output, and energy is wasted seriously.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] The utility model provides an air separation equipment liquid oxygen backfill device, including liquid oxygen storage tank, three -way pipe no. One, three -way pipe no. Two, three -way pipe no. Three and filling car pump, between the liquid oxygen storage tank and the filling car pump, between the filling car pump and three -way pipe no. Three, between the liquid oxygen storage tank and three -way pipe no. One, between three -way pipe no. One and three -way pipe no. Two all are provided with the main pipeline of intercommunication, both sides of main pipeline and the flange disc that is fixedly connected with three -way pipe no. One, three -way pipe no. Two, three -way pipe no. Three's export place all are fixedly connected with the fixed ring no. One and fixed ring no. Two that are set up to each other respectively, the inside of fixed ring no. One is equipped with a plurality of movable groove that arranges in the circumference shape around fixed ring no. One, the side inner wall of movable groove away from flange disc is equipped with the limit slot, the side inner wall of limit slot away from flange disc is equipped with the sliding slot no. Two that is connected with outside, the one side of sliding slot no. Two is equipped with the through groove, the inside of movable groove is provided with connecting mechanism, connecting mechanism includes the push rod no. One of fixed connection with fixed ring no. Two, the side inner wall of movable groove is equipped with the opening, the push rod no. One is extended into the inside of movable groove through the opening and penetrates fixed ring no. One, the one end of push rod no. One in the inside of movable groove is fixedly connected with the stopper no. One that is adapted to the opening, the side of stopper no. One away from push rod no. One is abutted with two springs, the end of spring away from stopper no. One is all fixedly connected with the inner wall of movable groove, the inside of movable groove is rotatably connected with the block that is shaped as '' S '', the side inner wall of block close to flange disc is fixedly connected with two spring telescopic rods, the one end of spring telescopic rod is fixedly connected with the stopper no. Two that penetrates through the through groove.

[0007] Preferably, one side of the stopper no. Two is fixedly connected with two pressing blocks, the pressing blocks are located in the inside of the limit slot, and a sliding slot no. One is arranged between the pressing blocks, one side of the pressing blocks can abut against the block, and the sliding slot no. One is in communication with the sliding slot no. Two.

[0008] Preferably, a sliding block is slidably connected in the inside of the sliding slot no. Two, one end of the sliding block extends into the movable groove and is fixedly connected with a push rod no. Two, and the one end of the sliding block extending into the movable groove can abut against the block; the push rod no. Two penetrates through the fixed ring no. One from the inside of the movable groove and can abut against the fixed ring no. Two; and the one end of the sliding block away from the push rod no. Two penetrates through the sliding slot no. Two and is fixedly connected on the same ring.

[0009] Preferably, an inclined surface is arranged on one side of the stopper no. One and the stopper no. Two.

[0010] Preferably, the tee pipe two and the tee pipe three are provided with the connecting pipeline two which is communicated with each other, the flange plates are fixedly connected to two sides of the connecting pipeline two, the connecting pipeline one which is communicated with the connecting pipeline two is arranged on the tee pipe one, and the flange plate is fixedly connected to one end of the connecting pipeline one which is communicated with the tee pipe one.

[0011] Preferably, the sealing gaskets are fixedly connected to the sides of the flange plates which are close to the fixing ring one and the fixing ring two.

[0012] Preferably, the valve four is arranged at an outlet of one end of the connecting pipeline one which is communicated with the tee pipe one, the valve one is arranged at an outlet of one end of the tee pipe three which is communicated with the filling pump, the valve two is arranged at an outlet of one end of the tee pipe two which is communicated with the tee pipe one, the valve six is arranged at an outlet of one end of the tee pipe two which is communicated with the connecting pipeline two, the valve five is arranged at an outlet of one end of the tee pipe three which is opposite to the valve one, the tee pipe three is communicated with the liquid oxygen vehicle interface which is externally connected through the main pipeline and the valve one, the valve three is arranged at an outlet of one end of the tee pipe two which is opposite to the valve two, and the tee pipe two is communicated with the air separation equipment cold box which is externally connected through the main pipeline and the valve two.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting the connecting mechanism, when connecting the main pipeline for conveying, the flange plate provided with the fixing ring one on the main pipeline can be aligned with the flange plate provided with the fixing ring two on another section of the main pipeline, and the two are aligned and in contact with each other. In the process of alignment and contact, the push rod two on the fixing ring one will be in contact with the fixing ring two, and the push rod one on the fixing ring two will extend into the inside of the movable groove through the opening. The push rod two will gradually move in the inside of the movable groove due to the contact of the fixing ring two. When the push rod two moves, it will drive the sliding block to slide in the inside of the sliding groove two and the sliding groove one. When the sliding block slides, it will also drive the circular ring to move on the outer wall of the fixing ring one. When the push rod one moves, it will drive the stop block one to move and compress the spring. When the push rod one moves, it will also be in contact with the “S”-shaped block, which will rotate in the inside of the movable groove. After the block rotates to a certain angle, one end will hook one side of the stop block one, and the other end will be in contact with the pressing block, so that the middle side of the block is clamped by the stop block one, and the other side is clamped by the push rod two, completing the fixed connection. The sealing pads on the sides close to the flange plates of the fixing ring one and the fixing ring two will be in contact with each other, forming a seal between the interfaces of the flange plates. When the main pipeline needs to be disassembled, the circular ring can be directly pushed, which will drive the sliding block to slide in the inside of the sliding groove two and the sliding groove one, so that the push rod two gradually moves away from the block and is no longer limited. Then the circular ring will be in contact with the inclined surface of the stop block two and continue to move. The stop block two will compress the spring telescopic rod downward, and the downward pressure of the stop block two will also drive the pressing block, allowing the pressing block to press the auxiliary block to rotate. When the block rotates to a certain angle, it will no longer hook the stop block one. At this time, the main pipeline can be directly separated, completing the disassembly. The advantage of this is that it is not necessary to operate multiple bolts to fix the main pipeline. The main pipeline can be directly connected to complete the installation, and the disassembly can be completed by pushing the circular ring on the outside, which is simple to operate and saves the time for installation and disassembly.

[0015] By setting the connecting pipeline one, the connecting pipeline two and the valve four, when the air separation equipment is started, the liquid is closed, the valve one, the valve two, the valve five and the valve six are opened, the valve four is opened, the charging pump is cooled and transparent, and then it is started and runs normally. Open the valve one, the valve six and the valve three in turn. The low-temperature liquid generated by the cold box of the air separation equipment is sucked into the three-way pipe two through the operation of the charging pump, then flows into the three-way pipe three through the connecting pipeline two, and then flows into the liquid oxygen storage tank through the main pipeline. At the same time, the low-temperature liquid also flows into the three-way pipe one through the connecting pipeline one and then flows into the liquid oxygen storage tank. By gradually closing the control valve four, the flow of the reverse charging main cold liquid oxygen can be controlled. The advantage of this is that it can effectively shorten the air separation equipment start-up liquid accumulation time, save the air separation equipment start-up liquid accumulation time, and improve the enterprise production capacity by reducing the air separation equipment start-up liquid accumulation time. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable a person skilled in the relevant art to make and use the present disclosure.

[0017] Figure 1 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0018] Figure 2 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0019] Figure 3 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0020] Figure 4 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0021] Figure 5 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device; Figure 3 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0022] Figure 6 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device; Figure 4 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device;

[0023] Figure 7 Figure 6 is a schematic view of a three-dimensional structure of a liquid oxygen counter-charging device for a space separation device.

[0024] [Reference signs]

[0025] 1, liquid oxygen storage tank; 2, main pipeline; 3, connecting mechanism; 31, push rod one; 32, block one; 33, spring; 34, block; 35, spring telescopic rod; 36, block two; 37, pressing block; 38, sliding groove one; 4, three-way pipe one; 5, three-way pipe two; 6, three-way pipe three; 7, charging pump; 8, connecting pipeline one; 9, connecting pipeline two; 10, flange; 11, fixed ring one; 12, sealing gasket; 13, movable groove; 14, limiting groove; 15, sliding groove two; 16, through groove; 17, circular ring; 18, sliding block; 19, push rod two; 20, fixed ring two; 21, valve one; 22, valve two; 23, valve three; 24, valve four; 25, valve five; 26, valve six; 27, opening.

[0026] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in the specific structure, device and environment, and the ordinary skilled in the art can adjust or modify these devices and environment according to specific needs, and the adjustment or modification still includes in the scope of the appended claims. DETAILED DESCRIPTION

[0027] The liquid oxygen backfill device of the air separation equipment provided by the utility model is described in detail below in combination with the drawings and specific embodiments. Meanwhile, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be adopted by the skilled in the art to implement some known technologies; and the drawings are only used to describe the embodiments more specifically, and are not intended to specifically limit the utility model.

[0028] As Figures 1-7The utility model discloses an air separation equipment liquid oxygen backfill device, including liquid oxygen storage tank 1, three -way pipe one 4, three -way pipe two 5, three -way pipe three 6 and fill car pump 7, liquid oxygen storage tank 1 and fill car pump 7 between, fill car pump 7 and three -way pipe three 6 between, liquid oxygen storage tank 1 and three -way pipe one 4 between, three -way pipe one 4 and three -way pipe two 5 between all are provided with the main pipeline 2 of intercommunication, the both sides of main pipeline 2 and the export of three -way pipe one 4, three -way pipe two 5, three -way pipe three 6 all are fixedly connected with flange 10, the flange 10 on the both sides of main pipeline 2 is fixedly connected with the fixed ring one 11 and fixed ring two 20 of setting opposite respectively, the inside of fixed ring one 11 is provided with a plurality of movable slots 13 that circle around fixed ring one 11 is arranged, the inside wall of movable slots 13 away from flange 10 is provided with limit slot 14, the inside wall of limit slot 14 away from flange 10 is provided with the sliding slot two 15 of communicating with outside, one side of sliding slot two 15 is provided with through slot 16, the inside of movable slots 13 is provided with connecting mechanism 3, connecting mechanism 3 includes with the fixed connection of fixed ring two 20 push rod one 31, the inside wall of movable slots 13 is provided with opening 27, push rod one 31 extends into the inside of movable slots 13 through opening 27 and penetrates fixed ring one 11, one end of push rod one 31 located in the inside of movable slots 13 is fixedly connected with the fender one 32 of adapting with opening 27, the side away from push rod one 31 of fender one 32 abuts with two springs 33, the end away from fender one 32 of spring 33 all is fixedly connected with the inner wall of movable slots 13, the inside of movable slots 13 is rotatably connected with the fender two 34 of shape " S ", the inside wall of fender two 34 close to flange 10 is fixedly connected with two spring telescopic rods 35, one end of spring telescopic rod 35 is fixedly connected with the fender two 36 of penetrating through slot 16, one side of fender two 36 is fixedly connected with two pressure blocks 37, the inside of limit slot 14 is located pressure block 37 and is provided with the sliding slot one 38 between pressure block 37, one side of pressure block 37 can abut with fender two 34, the sliding slot one 38 is communicated with sliding slot two 15, the inside of sliding slot two 15 is slidably connected with sliding block 18, one end of sliding block 18 extends into movable slots 13 and is fixedly connected with push rod two 19, one end of sliding block 18 that extends into movable slots 13 can abut with fender two 34, push rod two 19 penetrates fixed ring one 11 from the inside of movable slots 13 and can abut with fixed ring two 20, the end away from push rod two 19 of sliding block 18 all penetrates sliding slot two 15 and is fixedly connected on same annular ring 17, one side of fender one 32 and fender two 36 all is provided with inclined plane, the side close to flange 10 of fixed ring one 11 and fixed ring two 20 all are fixedly connected with sealing gasket 12, sealing gasket 12 abuts with flange 10.

[0029] By setting the connecting mechanism 3, when connecting the main pipes 2 for conveying, the flange plate 10 provided with the fixing ring one 11 on the main pipe 2 can be aligned with the flange plate 10 provided with the fixing ring two 20 on another section of the main pipe 2, and the two are aligned and abutted with each other. In the process of alignment and abutment, the push rod two 19 on the fixing ring one 11 will abut against the fixing ring two 20, and the push rod one 31 on the fixing ring two 20 will extend into the inside of the movable groove 13 through the opening 27. The push rod two 19 will gradually move in the inside of the movable groove 13 due to the abutment of the fixing ring two 20. When the push rod two 19 moves, it will drive the sliding block 18 to slide in the inside of the sliding groove two 15 and the sliding groove one 38. When the sliding block 18 slides, it will also drive the circular ring 17 to move on the outer wall of the fixing ring one 11. When the push rod one 31 moves, it will drive the stop block one 32 to move and compress the spring 33. When the push rod one 31 moves, it will also abut against the “S”-shaped block 34, drive the block 34 to rotate in the inside of the movable groove 13, and after the block 34 rotates to a certain angle, one end will hook one side of the stop block one 32, and the other end will abut against the pressing block 37. The middle side of the block 34 is clamped by the stop block one 32, and the other side is clamped by the push rod two 19, completing the fixed connection. The sealing gasket 12 close to the flange plate 10 side of the fixing ring one 11 and the fixing ring two 20 will abut against each other, forming a seal at the interface between the flange plates 10. When it is necessary to disassemble the main pipe 2, the circular ring 17 can be directly pushed, driving the sliding block 18 to slide in the inside of the sliding groove two 15 and the sliding groove one 38, so that the push rod two 19 gradually moves away from the block 34 and is no longer limited. Then the circular ring 17 will abut against the inclined surface of the stop block two 36 and continue to move. The stop block two 36 will compress the spring telescopic rod 35 downward, and the downward compression of the stop block two 36 will also drive the pressing block 37, allowing the pressing block 37 to press the block 34 to rotate. When the block 34 rotates to a certain angle, it will no longer hook the stop block one 32. At this time, the main pipe 2 can be directly separated, completing the disassembly. The advantage of this is that it is not necessary to operate multiple bolts to fix the main pipes 2. Only by directly abutting the main pipes 2 together can the installation be completed, and when disassembling, the circular ring 17 can be pushed from the outside to complete the disassembly, which is simple to operate and saves the time for installation and disassembly.

[0030] As Figure 1 And Figure 2As shown, the connection pipeline two 9 is arranged between the tee pipe two 5 and the tee pipe three 6 and is communicated with each other, the flange plate 10 is fixedly connected to both sides of the connection pipeline two 9, the connection pipeline one 8 is arranged on the tee pipe one 4 and is communicated with the connection pipeline two 9, the flange plate 10 is fixedly connected to one end of the connection pipeline one 8 communicated with the tee pipe one 4, the valve four 24 is arranged at the outlet of one end of the tee pipe one 4 communicated with the connection pipeline one 8, the valve one 21 is arranged at the outlet of one end of the tee pipe three 6 communicated with the filling pump 7, the valve two 22 is arranged at the outlet of one end of the tee pipe two 5 communicated with the tee pipe one 4, the valve six 26 is arranged at the outlet of one end of the tee pipe two 5 communicated with the connection pipeline two 9, the valve five 25 is arranged at the outlet of one end of the tee pipe three 6 opposite to the valve one 21, the tee pipe three 6 is communicated with the valve one 21 through the main pipeline 2 and the external liquid oxygen vehicle interface, the valve three 23 is arranged at the outlet of one end of the tee pipe two 5 opposite to the valve two 22, the tee pipe two 5 is communicated with the valve two 22 through the main pipeline 2 and the external air separation equipment cold box.

[0031] By arranging the connection pipeline one 8, the connection pipeline two 9 and the valve four 24, when the air separation equipment is started to accumulate liquid, the valve one 21, the valve two 22, the valve five 25 and the valve six 26 are closed, the valve four 24 is opened, the filling pump 7 is started to run after being cooled, the valve one 21, the valve six 26 and the valve three 23 are opened in sequence after the running is normal, the low-temperature liquid generated by the air separation equipment cold box is sucked into the tee pipe two 5 through the running of the filling pump 7, then flows into the tee pipe three 6 through the connection pipeline two 9, then flows into the filling pump 7 from the tee pipe three 6, and then flows into the inside of the liquid oxygen storage tank 1 through the main pipeline 2, at the same time, the low-temperature liquid also flows into the tee pipe one 4 through the connection pipeline one 8, and then flows into the liquid oxygen storage tank 1, the flow of the counter-charged main cold liquid oxygen can be controlled by gradually closing the valve four 24, and the air separation equipment accumulation liquid time can be effectively shortened, the purpose of saving the equipment air running consumption during the air separation equipment accumulation liquid and improving the enterprise capacity due to early production of product gas can be achieved.

[0032] The utility model provides a technical scheme, through setting up connecting mechanism 3, when connecting the main pipeline 2 for conveying, can align the flange plate 10 that has fixed ring no. 1 11 on the main pipeline 2 with the flange plate 10 that has fixed ring no. 2 20 on another section main pipeline 2, make both mutually align and resist, the push rod no. 2 19 on fixed ring no. 1 11 will resist with fixed ring no. 2 20 in the process of aligning and resisting, the push rod no. 1 31 on fixed ring no. 2 20 will extend into the inside of movable slot 13 through opening 27, the push rod no. 2 19 will gradually move in the inside of movable slot 13 due to the resistance of fixed ring no. 2 20, the push rod no. 2 19 will drive the sliding block 18 to slide in the inside of sliding slot no. 2 15 and sliding slot no. 1 38 when moving, the sliding block 18 will also drive the circular ring 17 to move on the outer wall of fixed ring no. 1 11 when sliding, and the push rod no. 1 31 will drive the stopper no. 1 32 to move when moving, compression spring 33, and the push rod no. 1 31 will also resist with the " S " shaped block 34 when moving, make the block 34 rotate in the inside of movable slot 13, the block 34 will hook one side of stopper no. 1 32 after rotating to a certain angle one end, and the other end will resist with the pressing block 37, make the middle side of the block 34 be stuck by stopper no. 1 32, and the other side be stuck by the push rod no. 2 19, complete fixed connection, the sealing gasket 12 on the side of fixed ring no. 1 11 and fixed ring no. 2 20 close to flange plate 10 will resist together, form the seal between the interface of flange plate 10, when needing to disassemble the main pipeline 2, can directly push the circular ring 17, make the circular ring 17 drive the sliding block 18 to slide in the inside of sliding slot no. 2 15 and sliding slot no. 1 38, make the push rod no. 2 19 gradually move away from the block 34, no longer limit it, then the circular ring 17 will resist with the inclined surface on the stopper no. 2 36 and continue to move, the stopper no. 2 36 will compress spring telescopic rod 35 downwards, and the stopper no. 2 36 will also drive the pressing block 37 downwards, make the pressing block 37 press down auxiliary block 34, when the block 34 rotates to a certain angle, will not hook stopper no. 1 32, at this moment, can directly separate the main pipeline 2, complete disassembly, the advantage of doing this is not needed through operating multiple bolts and fixed between the main pipeline 2, only need to butt joint together the main pipeline 2 can complete installation, and when disassembling, push the circular ring 17 on the outside can complete disassembly, simple operation, save the time of installation and disassembly.

[0033] When the air separation equipment is started to accumulate liquid, the valve one 21, the valve two 22, the valve five 25 and the valve six 26 are closed, the valve four 24 is opened, the charging pump 7 is started to run after being cooled, and the valve one 21, the valve six 26 and the valve three 23 are opened in sequence after normal running, the low-temperature liquid generated by the cold box of the air separation equipment is sucked into the three-way pipe two 5 through the running of the charging pump 7, then flows into the three-way pipe three 6 through the connecting pipe two 9, then flows into the charging pump 7 from the three-way pipe three 6, and then flows into the inside of the liquid oxygen storage tank 1 through the main pipe 2, and meanwhile, the low-temperature liquid also flows into the three-way pipe one 4 through the connecting pipe one 8, and then flows into the liquid oxygen storage tank 1, the flow of the counter-charging main cold liquid oxygen can be controlled by gradually closing the control valve four 24, and the air separation equipment accumulation liquid starting time can be effectively shortened, the air separation equipment consumption during accumulation liquid starting is saved, and the enterprise production capacity is improved due to early product gas.

[0034] The utility model covers any alternative, modification, equivalent method and scheme which are made on the essence and range of the utility model. In order to make the public have the thorough understanding of the utility model, the specific details are explained in the above preferred embodiment of the utility model, and the utility model can be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known method, process, flow, element and circuit are not explained in detail.

[0035] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiment methods can be completed by programs instructing relevant hardware, and the programs can be stored in computer readable storage medium, such as ROM / RAM, magnetic disc, optical disc and the like.

[0036] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for the ordinary skilled in the art, without departing from the principle of the utility model, a plurality of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection range of the utility model.

Claims

1. A liquid oxygen backfill device for air separation plant, characterized by, The utility model relates to a liquid oxygen storage tank (1), three -way pipe one (4), three -way pipe two (5), three -way pipe three (6) and car filling pump (7), the liquid oxygen storage tank (1) with car filling pump (7) between, car filling pump (7) with three -way pipe three (6) between, the liquid oxygen storage tank (1) with three -way pipe one (4) between, three -way pipe one (4) with three -way pipe two (5) between all are provided with the main pipeline (2) of intercommunication, the both sides of main pipeline (2) with the flange plate (10) of three -way pipe one (4), three -way pipe two (5), three -way pipe three (6) export are all fixedly connected, the flange plate (10) of both sides of main pipeline (2) is fixedly connected with the fixed ring one (11) and fixed ring two (20) of opposite setting respectively, the inside of fixed ring one (11) is provided with a plurality of movable groove (13) of the circle -like arrangement around fixed ring one (11), the movable groove (13) is provided with the limit slot (14) of the inside wall of one side away from flange plate (10), the limit slot (14) is provided with the sliding slot two (15) of communication with outside on the inside wall of one side away from flange plate (10), the one side of sliding slot two (15) is provided with the through groove (16), the inside of movable groove (13) is provided with connecting mechanism (3), The connecting mechanism (3) includes a push rod one (31) fixedly connected with the fixed ring two (20), an opening (27) is formed in the inner wall of one side of the movable groove (13), the push rod one (31) extends into the inside of the movable groove (13) through the opening (27) penetrating the fixed ring one (11), one end of the push rod one (31) located in the inside of the movable groove (13) is fixedly connected with a stop block one (32) matched with the opening (27), the stop block one (32) is abutted by two springs (33) on the side away from the push rod one (31), one end of the spring (33) away from the stop block one (32) is fixedly connected with the inner wall of the movable groove (13), a block (34) shaped as "S" is rotatably connected in the inside of the movable groove (13), two spring telescopic rods (35) are fixedly connected with the block (34) on the inner wall of the side close to the flange plate (10), one end of the spring telescopic rod (35) is fixedly connected with a stop block two (36) penetrating the through groove (16). The stop block two (36) is fixedly connected with two pressing blocks (37) on one side, the pressing blocks (37) are located in the inside of the limit slot (14), and a sliding slot one (38) is arranged between the pressing blocks (37), one side of the pressing block (37) can abut against the block (34), and the sliding slot one (38) is communicated with the sliding slot two (15).

2. The liquid oxygen backfill device of claim 1, wherein, ​ 3. The liquid oxygen backfill device of claim 1, wherein, The inner side of the sliding groove two (15) is slidably connected with a sliding block (18), one end of the sliding block (18) extends into the movable groove (13) and is fixedly connected with a push rod two (19), the end of the sliding block (18) extending into the movable groove (13) can abut against the block (34), the push rod two (19) penetrates through the fixed ring one (11) from the inside of the movable groove (13) and can abut against the fixed ring two (20), the end of the sliding block (18) away from the push rod two (19) penetrates through the sliding groove two (15) and is fixedly connected on the same circular ring (17).

4. The liquid oxygen backfill device of claim 1, wherein, The side of the block one (32) and the block two (36) is provided with an inclined surface.

5. The liquid oxygen backfill device of claim 1, wherein, The three-way pipe two (5) and the three-way pipe three (6) are provided with a connecting pipeline two (9) communicating with each other, the two sides of the connecting pipeline two (9) are fixedly connected with the flange plate (10), the three-way pipe one (4) is provided with a connecting pipeline one (8) communicating with the connecting pipeline two (9), and the end of the connecting pipeline one (8) in communication with the three-way pipe one (4) is fixedly connected with the flange plate (10).

6. The air separation unit liquid oxygen reboil apparatus of claim 1, wherein, The side of the fixed ring one (11) and the fixed ring two (20) close to the flange plate (10) is fixedly connected with a sealing gasket (12), and the sealing gasket (12) abuts against the flange plate (10).

7. The liquid oxygen backfill device of claim 5, wherein, The end of the three-way pipe one (4) in communication with the connecting pipeline one (8) is provided with a valve four (24), the end of the three-way pipe three (6) in communication with the filling pump (7) is provided with a valve one (21), the end of the three-way pipe two (5) in communication with the three-way pipe one (4) is provided with a valve two (22), the end of the three-way pipe two (5) in communication with the connecting pipeline two (9) is provided with a valve six (26), the end of the three-way pipe three (6) opposite to the valve one (21) is provided with a valve five (25), the end of the three-way pipe three (6) opposite to the valve one (21) is in communication with the external liquid oxygen vehicle interface through the main pipeline (2), the end of the three-way pipe two (5) opposite to the valve two (22) is provided with a valve three (23), and the end of the three-way pipe two (5) opposite to the valve two (22) is in communication with the external air separation equipment cold box through the main pipeline (2).

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