CN212900919U - Liquid nitrogen fills pump outlet pipe way and uses sweep gas device - Google Patents

Abstract

The utility model discloses a scavenging device for an outlet pipeline of a liquid nitrogen charging pump, which comprises a box body, a second air outlet pipe and a fixed pipe, wherein the fixed pipe is embedded and fixed on the side end surface of the second air outlet pipe, and one end of the fixed pipe, which is far away from the second air outlet pipe, is embedded and fixed with a first air outlet pipe, a first valve is arranged on the first air outlet pipe, a second valve is arranged on the second air outlet pipe, a second connecting pipe is embedded and fixed at the side end of the outer surface of the fixed pipe, a first connecting disc is arranged at one end of the second connecting pipe, which is far away from the fixed pipe, a pressure gauge is embedded and fixed on the top end surface of the box body, a first connecting pipe is embedded and fixed on the top end surface of the box body, a second connecting disc is arranged at one end of the first connecting pipe, which is far away from the box body, and the second method is linked to be coiled with the first method through the bolt and is linked to be coiled, the booster pump is installed to the rear end face of box, and booster pump and box gaseous intercommunication. The utility model discloses possess the simple operation, inside maintenance convenient and fast and the better advantage of practicality.

Description

Liquid nitrogen fills pump outlet pipe way and uses sweep gas device

Technical Field

The utility model relates to a liquid nitrogen fills dress pump and maintains technical field, specifically is a liquid nitrogen fills dress pump outlet pipe and uses sweep gas device.

Background

The liquid nitrogen fills pump outlet pipeline and refers to with sweeping gas device: liquid nitrogen, liquid nitrogen. Is inert, colorless, odorless, non-corrosive, non-combustible and extremely low in temperature. Nitrogen constitutes the majority of the atmosphere (78.03% by volume, 75.5% by weight). Nitrogen is inactive and does not support combustion. The frostbite is caused by a large amount of heat absorption contact during vaporization. The nitrogen gas was 78% of the air. Under normal pressure, the temperature of liquid nitrogen is-196 ℃; 1 cubic meter of liquid nitrogen can be expanded to 696 cubic meters of pure gaseous nitrogen at 21 ℃. Liquid nitrogen is a colorless, odorless, low-temperature liquid and gas at high pressure. Liquid nitrogen (often written as LN2), is a liquid form formed by nitrogen at low temperatures. The boiling point of nitrogen is-196 ℃, and liquid nitrogen is formed at normal atmospheric pressure if the temperature is below that; if pressurized, liquid nitrogen can be obtained at higher temperatures.

However, when an outlet pipeline of an existing manual valve liquid nitrogen filling pump is closed, a certain response time is needed, before low-temperature liquid is filled, a field operator is needed to manually pre-cool the low-temperature pump and the pipeline, the pump can be started to fill after cooling is completed, and the operator is needed to have relatively rich field experience. Otherwise, the cooling is not in place, the pressure cannot be raised after the cryogenic pump is started, and the risk of equipment failure, personal injury, unqualified product quality and the like caused by misoperation in the normal safety production cannot be guaranteed. Therefore, the operation of personnel has the risk of errors, and simultaneously, the operation of air separation has great risk.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid nitrogen fills pump outlet pipe says and uses sweep gas device possesses the simple operation, and inside maintenance convenient and fast and the better advantage of practicality have solved and have just can open the pump after the cooling is accomplished and fill the dress, need the operating personnel to have comparatively abundant field experience. Otherwise, the cooling is not in place, the pressure cannot be raised after the cryogenic pump is started, and the risk of equipment failure, personal injury, unqualified product quality and the like caused by misoperation in the normal safety production cannot be guaranteed. Therefore, the operation of personnel has the risk of errors, and simultaneously, the problem of great risk exists in the safe operation of air separation.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a liquid nitrogen fills sweep gas device for pump outlet pipe way, includes box, second outlet duct and fixed pipe, the side end face embedding of second outlet duct is fixed with fixed pipe, and the one end embedding that fixed pipe deviates from the second outlet duct is fixed with first outlet duct, the surface side embedding of fixed pipe is fixed with the second connecting pipe, the one end that the second connecting pipe deviates from fixed pipe is installed first method and is coiled even, the top face embedding of box is fixed with the manometer.

Preferably, a first valve is installed on the first air outlet pipe, and a second valve is installed on the second air outlet pipe.

Preferably, the exhaust pipe is fixedly embedded into the side end face of the fixed pipe, and the cover plate is rotatably mounted on the exhaust pipe.

Preferably, the second connecting pipe is provided with a third valve, and the size of the third valve is matched with that of the second connecting pipe.

Preferably, a first connecting pipe is fixedly embedded in the top end face of the box body, a second connecting disc is mounted at one end, deviating from the box body, of the first connecting pipe, and the second connecting disc is connected with the first connecting disc through a bolt.

Preferably, the booster pump is installed to the rear end face of box, and booster pump and box gaseous intercommunication, and the bottom end face welding of box has the support frame.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the box, the operating personnel links the dish with the first connecting pipe of box top face through the second method and links the dish with the first method and be connected, the booster pump is opened to the operating personnel after connecting, the booster pump is opened and is carried out the pressure boost to the gas in the box, operating personnel closes the second valve on first valve on the first outlet duct and the second outlet duct after the pressure boost, open the third valve on the second connecting pipe after closing, gas purge gas after the third valve is opened the back pressure boost sweeps outlet duct, prevent that air or moisture from getting into outlet duct, the assurance outlet duct pollution-free of use, it is better to make the practicality, the operation is more convenient, and can close the pipeline at any time and open the pipeline that needs to maintain.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic rear view of the present invention;

fig. 3 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

In the figure: 1. a support frame; 2. a box body; 3. a first air outlet pipe; 4. a first valve; 5. an exhaust pipe; 6. a second valve; 7. a second air outlet pipe; 8. a first connecting pipe; 9. a fixed tube; 10. A pressure gauge; 11. a bolt; 12. a third valve; 13. a second connecting pipe; 14. a first method is connected with a disc; 15. and the second method is connected with the disc.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to fig. 3, the present invention provides an embodiment: a blowing and sweeping device for an outlet pipeline of a liquid nitrogen filling pump comprises a box body 2, a second air outlet pipe 7 and a fixed pipe 9, wherein the side end surface of the second air outlet pipe 7 is fixedly embedded with the fixed pipe 9, the end, deviating from the second air outlet pipe 7, of the fixed pipe 9 is fixedly embedded with a first air outlet pipe 3, the first air outlet pipe 3 is provided with a first valve 4, the second air outlet pipe 7 is provided with a second valve 6, the outer surface side end of the fixed pipe 9 is fixedly embedded with a second connecting pipe 13, the side end surface of the fixed pipe 9 is fixedly embedded with an exhaust pipe 5, the exhaust pipe 5 is rotatably provided with a cover plate, the second connecting pipe 13 is provided with a third valve 12, the size of the third valve 12 is matched with that of the second connecting pipe 13, the end, deviating from the fixed pipe 9, of the second connecting pipe 13 is provided with a first connecting disc 14, the top end surface of the box body 2 is fixedly embedded with a pressure gauge 10, the size of the third valve 12 is matched with that of the second connecting pipe 13, the first connecting pipe 8 is fixedly embedded in the top end face of the box body 2, the second connecting plate 15 is installed at one end, away from the box body 2, of the first connecting pipe 8, the second connecting plate 15 is connected with the first connecting plate 14 through the bolt 11, the booster pump is installed on the rear end face of the box body 2, the booster pump is in gas communication with the box body 2, and as is well known to those skilled in the art, the booster pump is provided with common knowledge and belongs to conventional means or common general knowledge, so that the details are not repeated, and the persons skilled in the art can carry out any selection according to needs or convenience.

The bottom face welding of box 2 has support frame 1, through setting up box 2, operating personnel links dish 15 with the first method with the first connecting pipe 8 of box 2 top face through the second method and is connected with first method and links dish 14, operating personnel opens the booster pump after connecting, the booster pump is opened and is carried out the pressure boost to the gas in box 2, operating personnel closes first valve 4 on first outlet duct 3 and second valve 6 on second outlet duct 7 after the pressure boost, open third valve 12 on second connecting pipe 13 after closing, gaseous scavenging gas after the pressure boost is opened to third valve 12 sweeps the outlet duct, prevent that air or moisture from getting into the outlet duct, the assurance outlet duct that uses is pollution-free, make the practicality better, it is more convenient to operate, and can close the pipeline at any time and open the pipeline that needs to maintain.

The working principle is as follows: the operating personnel links dish 15 with the first method with the first connecting pipe 8 of 2 top end faces of box and is connected with first method and links dish 14 through the second method, the booster pump is opened to the operating personnel after connecting, the booster pump is opened and is carried out the pressure boost to the gas in the box 2, operating personnel closes first valve 4 on the first outlet duct 3 and second valve 6 on the second outlet duct 7 after the pressure boost, open third valve 12 on the second connecting pipe 13 after closing, the gaseous scavenging gas after the third valve 12 opens the back pressure boost sweeps outlet duct, prevent that air or moisture from getting into outlet duct, the assurance outlet duct that uses is pollution-free, make the practicality better, it is more convenient to operate.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a liquid nitrogen fills pump outlet pipe says and uses sweep gas device, includes box (2), second outlet duct (7) and fixed pipe (9), its characterized in that: a fixed pipe (9) is fixedly embedded in the side end face of the second air outlet pipe (7), a first air outlet pipe (3) is fixedly embedded in one end, away from the second air outlet pipe (7), of the fixed pipe (9), a second connecting pipe (13) is fixedly embedded in the outer surface side end of the fixed pipe (9), a first connecting disc (14) is installed at one end, away from the fixed pipe (9), of the second connecting pipe (13), and a pressure gauge (10) is fixedly embedded in the top end face of the box body (2).

2. A purge gas apparatus for a liquid nitrogen filled pump outlet conduit as claimed in claim 1, wherein: install first valve (4) on first outlet duct (3), and install second valve (6) on second outlet duct (7).

3. A purge gas apparatus for a liquid nitrogen filled pump outlet conduit as claimed in claim 1, wherein: the side end face of the fixed pipe (9) is embedded and fixed with an exhaust pipe (5), and a cover plate is rotatably arranged on the exhaust pipe (5).

4. A purge gas apparatus for a liquid nitrogen filled pump outlet conduit as claimed in claim 1, wherein: and a third valve (12) is arranged on the second connecting pipe (13), and the size of the third valve (12) is matched with that of the second connecting pipe (13).

5. A purge gas apparatus for a liquid nitrogen filled pump outlet conduit as claimed in claim 1, wherein: the top end face of the box body (2) is fixedly embedded with a first connecting pipe (8), one end, deviating from the box body (2), of the first connecting pipe (8) is provided with a second method connecting disc (15), and the second method connecting disc (15) is connected with a first method connecting disc (14) through a bolt (11).

6. A purge gas apparatus for a liquid nitrogen filled pump outlet conduit as claimed in claim 1, wherein: the booster pump is installed to the rear end face of box (2), and booster pump and box (2) gaseous intercommunication, and the bottom face welding of box (2) has support frame (1).

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