CN212510486U

CN212510486U - Liquid nitrogen filling module and filling station

Info

Publication number: CN212510486U
Application number: CN202021358323.5U
Authority: CN
Inventors: 胡佳霖; 刘强; 郑古成
Original assignee: Genepoint Biotechnology Shanghai Co ltd
Current assignee: Genepoint Biotechnology Shanghai Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-02-09
Anticipated expiration: 2030-07-10

Abstract

The utility model provides a liquid nitrogen filling module and have filling station of this liquid nitrogen filling module, this liquid nitrogen filling module includes: the three-way joint, the stop valve, the filter, the pressure relief valve and the liquid nitrogen input pipe; three ports of the three-way joint are respectively connected with an inlet of the stop valve, an outlet of the filter and the pressure relief valve; the outlet of the stop valve is connected with one end of a liquid nitrogen input pipe. The liquid nitrogen filling module is arranged between a liquid nitrogen storage device such as a Dewar bottle and a transfer barrel, and the connection between the Dewar bottle and a liquid nitrogen input pipe is opened and closed through a stop valve, so that the filling of the liquid nitrogen is realized; secondly, by arranging a pressure relief valve, after the stop valve and a manual valve on the Dewar flask are closed, gasified liquid nitrogen is discharged in time, and the danger caused by the sharp increase of the pressure in a pipeline between the Dewar flask and the liquid nitrogen filling module is avoided; and, through setting up the filter, strain the impurity in the liquid nitrogen, avoid the environment in the impurity pollution transportation bucket.

Description

Liquid nitrogen filling module and filling station

Technical Field

The utility model relates to a liquid nitrogen filling technical field especially relates to a liquid nitrogen filling module and filling station.

Background

At present, a transfer barrel is adopted to transfer biological samples, and liquid nitrogen is filled in the transfer barrel to maintain a low-temperature environment and ensure the activity of the biological samples. As the liquid nitrogen in the transfer barrel is gradually consumed along with the lapse of time, the liquid nitrogen needs to be supplemented into the transfer barrel; in the prior art, the liquid nitrogen supplement operation is usually carried out manually. The liquid nitrogen is manually filled, and water vapor in the air is condensed into smoke and diffuses due to the fact that splashed liquid nitrogen is gasified to absorb a large amount of heat; secondly, the splashed liquid nitrogen is easy to cause frostbite, so that a liquid nitrogen filling station needs to be developed, and how to open and close the connection between the Dewar flask and the liquid nitrogen input pipe needs to be solved in the process of the liquid nitrogen filling station.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present disclosure provides a liquid nitrogen filling module and a filling station.

According to an aspect of the present disclosure, a liquid nitrogen filling module includes: the three-way joint, the stop valve, the filter, the pressure relief valve and the liquid nitrogen input pipe; three ports of the three-way joint are respectively connected with an inlet of the stop valve, an outlet of the filter and the pressure relief valve; the outlet of the stop valve is connected with one end of a liquid nitrogen input pipe.

According to at least one embodiment of the present disclosure, the liquid nitrogen input pipe is externally wrapped with a heat insulation sleeve.

A liquid nitrogen filling station comprises the liquid nitrogen filling module.

According to at least one embodiment of the present disclosure, further comprising: the front part of the box body is provided with an opening, the fan is fixed at the rear part of the box body, the tray is arranged in the box body in a front-back sliding manner, and the door is covered at the opening of the box body; the rear wall of the box body is provided with a smoke outlet communicated with the outlet of the fan; one end of the liquid nitrogen input pipe stop valve extends into the top of the box body.

According to at least one embodiment of the present disclosure, further comprising: u-shaped piece, sliding plate and connecting plate; one end of the U-shaped piece, which is far away from the cross arm, is fixed at the rear part of the box body; the sliding plate is connected between the two longitudinal arms of the U-shaped part in a sliding manner; the filter is fixed on the sliding plate; the connecting plate is fixed on a cross arm of the U-shaped part, and a connector connected with the inlet of the filter is fixed on the connecting plate.

According to at least one embodiment of the present disclosure, the top surface of the tray is provided with a profiling groove.

According to at least one embodiment of the present disclosure, the front portion of the tray is provided with a handle hole which vertically penetrates through the tray.

According to at least one embodiment of the present disclosure, further comprising: drawer guide rails and a base; the base is fixed in the box diapire, and the base passes through drawer guide rail and tray sliding connection.

According to at least one embodiment of the present disclosure, further comprising: the magnet and an attraction piece attracted with the magnet; one of the magnet and the attraction piece is fixed at the opening of the box body, and the other is fixed at the door.

According to at least one embodiment of the present disclosure, further comprising: a sealing ring surrounding the periphery of the opening at the front part of the box body; one of the door or the box body is provided with a ring groove for accommodating the sealing ring.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of a liquid nitrogen filling module according to an embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a liquid nitrogen filling station according to an embodiment of the present disclosure.

Fig. 3 is a sectional view a-a in fig. 2.

Fig. 4 is a sectional view B-B in fig. 2.

FIG. 5 is a schematic view of a connection structure between a liquid nitrogen filling module and a tank body in the liquid nitrogen filling station shown in FIG. 2.

Reference numerals:

1-a box body; 1 a-a smoke outlet; 2-a fan; 3-a tray; 3 a-a profiling groove; 3 b-handle hole; 4-a door; 5-liquid nitrogen input pipe; 6-a transfer barrel; 7-sealing ring; 8-a magnet; 9-a suction piece; 10-drawer guide rails; 11-a base; 12-a three-way connection; 13-a stop valve; 14-a filter; 15-pressure relief valve; 16-a connector; 17-a heat insulating sleeve; an 18-U-shaped member; 19-a slide plate; 20-a connecting plate; 20 a-arc shaped aperture.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The liquid nitrogen filling module is arranged between a liquid nitrogen storage device such as a Dewar bottle and a transfer barrel, and the connection between the Dewar bottle and a liquid nitrogen input pipe is opened and closed through a stop valve, so that the filling of the liquid nitrogen is realized; secondly, by arranging a pressure relief valve, after the stop valve and a manual valve on the Dewar flask are closed, gasified liquid nitrogen is discharged in time, and the danger caused by the sharp increase of the pressure in a pipeline between the Dewar flask and the liquid nitrogen filling module is avoided; and, through setting up the filter, strain the impurity in the liquid nitrogen, avoid the environment in the impurity pollution transportation bucket.

According to a first embodiment of the present disclosure, fig. 1 to 5, there is provided a liquid nitrogen filling module, including: the three-way joint 12, the stop valve 13, the filter 14, the pressure relief valve 15 and the liquid nitrogen input pipe; three ports of the three-way joint 12 are respectively connected with an inlet of the stop valve 13, an outlet of the filter 14 and a pressure relief valve 15; the outlet of the stop valve 13 is connected with one end of a liquid nitrogen input pipe.

The three-way connection 12, the shut-off valve 13, the filter 14, the pressure relief valve 15 and the liquid nitrogen inlet line are commercially available and will not be described in detail here. The stop valve 13 can be realized by an electromagnetic valve or a manual valve, and is commercially available. When the electromagnetic valve is used, the opening and closing of the electromagnetic valve can be controlled by a control device such as an electrically connected button or a controller.

In this embodiment, the liquid nitrogen input tube is wrapped with a heat insulation sleeve 17 to prevent the liquid nitrogen input tube from hanging water on the wall.

The embodiment also discloses a liquid nitrogen filling station which comprises the liquid nitrogen filling module. On this basis, still include: the front part of the box body is provided with an opening 1, a fan 2 fixed at the rear part of the box body 1, a tray 3 arranged in the box body 1 in a front-back sliding manner and a door 4 covering the opening of the box body 1; the rear wall of the box body 1 is provided with a smoke outlet 1a communicated with the outlet of the fan 2; one end of a stop valve 13 of the liquid nitrogen input pipe 5 extends into the top of the box body 1.

When the device is used, the barrel cover of the transfer barrel 6 is taken down, the transfer barrel 6 is placed on the tray 3, then the tray 3 and the transfer barrel 6 are pushed into the box body 1, the door 4 is closed again, then the stop valve 13 is opened, liquid nitrogen starts to be filled into the transfer barrel 6, after the liquid nitrogen filling is finished, the stop valve 13 is closed, the door 4 is opened again, the transfer barrel 6 and the tray 3 are pulled out of the box body 1, and the barrel cover is covered; and filling liquid nitrogen into the transfer barrel 6. Because the filling of the liquid nitrogen is finished in the box body 1, the splashed liquid nitrogen cannot frostbite personnel; secondly, smoke in the box body 1 is discharged directionally through the fan 2, the temperature in the box body 1 can be prevented from being reduced sharply, and meanwhile, a large amount of water is prevented from being generated in the box body 1 when liquid nitrogen is filled.

In order to avoid low temperature conduction to the outer wall of the box body 1 when filling liquid nitrogen, in the embodiment, the box body 1 comprises an inner layer, a middle layer and an outer layer which are arranged in sequence from inside to outside; gaps are arranged between the inner layer and the middle layer and between the middle layer and the outer layer; the inner layer, the middle layer and the outer layer are all in a cuboid shape with an opening at the front part, and the bottom wall of the inner layer, the bottom wall of the middle layer and the bottom wall of the outer layer are superposed; the four top corners of the inner layer and the middle layer are connected together by aluminum alloy sections; the outer upper portion inwards extends to form a convex edge, and the outer upper portion is fixedly connected with the middle layer top wall through the convex edge. Accordingly, the door 4 has a hollow plate-like structure.

The fan 2 can be purchased as a finished product directly from the market, and is not described in detail herein. The fan 2 can be fixed on one side of the inner layer rear wall, which is far away from the middle layer rear wall, and the smoke outlet 1a sequentially penetrates through the inner layer rear wall, the middle layer rear wall and the outer layer rear wall, so that the inner layer rear wall, the middle layer rear wall and the outer layer rear wall can be attached to each other in order to reduce the diffusion of smoke through gaps among layers; the fan 2 can also be fixed between the inner layer and the middle layer or between the middle layer and the outer layer, and accordingly, a smoke inlet communicated with the inlet of the fan 2 needs to be arranged on the rear wall of the inner layer or the inner layer and the middle layer, and the smoke outlet 1a needs to be arranged on the rear wall of the middle layer or the outer layer.

In the embodiment, the fan 2 is fixed between the middle layer and the outer layer, the rear wall of the inner layer is attached to the rear wall of the middle layer, and smoke inlets communicated with the inlet of the fan 2 are formed in the rear wall of the inner layer and the rear wall of the middle layer; the outer layer is provided with the smoke outlet 1 a. In order to reduce the diffusion of smoke through the gap between the middle layer and the outer layer, in this embodiment, the front end surface of the fan 2 is attached to the side of the rear wall of the middle layer facing the outer layer, and the rear wall of the fan 2 is attached to the side of the rear wall of the outer layer facing the middle layer. On the basis, in order to further avoid low temperature conduction to the outer wall of the box body 1, the inner layer is formed by enclosing aluminum alloy plates, the rear wall of the middle layer is made of aluminum alloy plates so as to fix the fan 2, and the rest side walls of the middle layer are heat insulation plates; the outer layer and the door 4 are enclosed by the heat insulation board. On the basis, the device also comprises a sealing ring 7 which is arranged around the periphery of the front opening of the box body 1; either the door 4 or the box 1 is provided with a ring groove for receiving the sealing ring 7, which is provided in the front of the box 1 in this embodiment, so as to prevent smoke from diffusing through the gap between the door 4 and the box 1. On this basis, still include: the magnet 8 and an attraction piece 9 attracted with the magnet 8; one of the magnet 8 and the attraction piece 9 is fixed at the opening of the box body 1, and the other is fixed at the door 4. The attraction member 9 may be the magnet 8 or an iron plate that can be attracted by the magnet 8. In this embodiment, the magnet 8 is fixed to the opening of the case 1, and the attraction member 9 is fixed to the door 4. Magnets 8 may be fixed to both sides of the front opening of the cabinet 1, and accordingly, engaging members 9 may be fixed to both sides of the door 4. In this embodiment, one side of the door 4 is hinged to one side of the box 1, the other side of the door 4 is fixed with the attraction piece 9, and the other side of the box 1 is fixed with the magnet 8.

In this embodiment, the liquid nitrogen input tube 5 is located between the inner top and the middle layer, and the top wall of the inner layer is provided with an avoiding hole avoiding the liquid nitrogen input tube 5, so that the liquid nitrogen input tube 5 can be inserted into the top of the inner layer.

In the present embodiment, the three-way joint 12, the shut-off valve 13, the filter 14, and the pressure relief valve 15 are located between the middle layer and the outer layer, and specifically, further include: a U-shaped member 18, a slide plate 19 and a connecting plate 20; the end of the U-shaped part 18 away from the cross arm is fixed on the middle layer rear wall; the sliding plate 19 is connected between the two longitudinal arms of the U-shaped part 18 in a sliding mode; specifically, the opposite surfaces of two longitudinal arms of the U-shaped member 18 are provided with sliding grooves, and two ends of the sliding plate 19 are respectively in sliding fit with the two sliding grooves; a long hole is formed at the bottom of the sliding groove and is formed along the opening direction of the sliding groove; the end face of the sliding plate facing the bottom of the sliding groove is provided with a screw hole corresponding to the long hole, so that the sliding plate 19 is convenient to fix. The filter 14 is fixed on the slide plate 19; the attachment plate 20 is secured to the cross arm of the U-shaped member 18 and the attachment plate 20 is secured to the connector 16 which is connected to the inlet of the filter 14. On the basis, the rear end face of the connecting plate 20 is provided with at least two concentric arc-shaped holes 20a, screws are arranged in the arc-shaped holes 20a, the rear end face of the cross arm of the U-shaped part 18 is provided with threaded holes in threaded connection with the screws, the connecting plate 20 is in a stepped cylindrical shape, and the outer rear wall is provided with a round hole matched with the connecting plate 20. When the filter is installed, one end of the U-shaped part 18, which is far away from the cross arm, is fixed on the box body 1, the filter 14 is fixed on the sliding plate 19, two ends of the sliding plate 19 are respectively inserted into the two sliding grooves, the connector 16 is fixed on the connecting plate 20, the connecting plate 20 is rotated until the connector 16 is fixed with the filter 14, the arc-shaped holes 20a are opposite to the threaded holes of the cross arm of the U-shaped part 18, and screws are locked, namely the connecting plate 20 is fixed on the U-shaped part 18.

Tray 3 can be through sliding guide structure sliding connection such as linear rolling guide in box 1, in this embodiment, tray 3 is through drawer guide 10 sliding connection in box 1, specifically, is fixed with base 11 above the box 1 diapire, and base 11 is through drawer guide 10 and tray 3 sliding connection. On this basis, in order to avoid the position play of the transferring barrel 6 on the tray 3, in the present embodiment, the top surface of the tray 3 is provided with a profiling groove 3 a. The copying groove 3a is matched with the barrel bottom of the transferring barrel 6, and the gap between the side wall of the copying groove 3a and the barrel bottom of the transferring barrel 6 is determined according to the range of the transferring barrel 6 allowed to move. On this basis, in order to facilitate pulling out the tray 3 and the transfer barrel 6, in this embodiment, the front part of the tray 3 is provided with a vertically penetrating handle hole 3 b. The handle is inserted into the handle hole 3b, so that the force is applied to the tray 3, and the tray 3 and the transfer barrel 6 are pulled out.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. The utility model provides a liquid nitrogen filling module which characterized in that includes: the three-way joint, the stop valve, the filter, the pressure relief valve and the liquid nitrogen input pipe; three ports of the three-way joint are respectively connected with an inlet of the stop valve, an outlet of the filter and the pressure relief valve; the outlet of the stop valve is connected with one end of a liquid nitrogen input pipe.

2. The liquid nitrogen filling module of claim 1, wherein the liquid nitrogen input pipe is externally wrapped with a heat insulating sleeve.

3. A liquid nitrogen filling station comprising the liquid nitrogen filling module of claim 1 or 2.

4. The liquid nitrogen filling station of claim 3, further comprising: the front part of the box body is provided with an opening, the fan is fixed at the rear part of the box body, the tray is arranged in the box body in a front-back sliding manner, and the door is covered at the opening of the box body; the rear wall of the box body is provided with a smoke outlet communicated with the outlet of the fan; one end of the liquid nitrogen input pipe stop valve extends into the top of the box body.

5. The liquid nitrogen filling station of claim 4, further comprising: u-shaped piece, sliding plate and connecting plate; one end of the U-shaped piece, which is far away from the cross arm, is fixed at the rear part of the box body; the sliding plate is connected between the two longitudinal arms of the U-shaped part in a sliding manner; the filter is fixed on the sliding plate; the connecting plate is fixed on a cross arm of the U-shaped part, and a connector connected with the inlet of the filter is fixed on the connecting plate.

6. The liquid nitrogen filling station of claim 4, wherein a top surface of the tray is provided with a contoured groove.

7. The liquid nitrogen filling station of claim 4, wherein a handle hole is formed in the front of the tray and penetrates vertically.

8. The liquid nitrogen filling station of claim 4, further comprising: drawer guide rails and a base; the base is fixed in the box diapire, and the base passes through drawer guide rail and tray sliding connection.

9. The liquid nitrogen filling station of claim 4, further comprising: the magnet and an attraction piece attracted with the magnet; one of the magnet and the attraction piece is fixed at the opening of the box body, and the other is fixed at the door.

10. The liquid nitrogen filling station of claim 4, further comprising: a sealing ring surrounding the periphery of the opening at the front part of the box body; one of the door or the box body is provided with a ring groove for accommodating the sealing ring.