CN216619341U

CN216619341U - Liquid nitrogen storage jar safe in utilization

Info

Publication number: CN216619341U
Application number: CN202122690531.6U
Authority: CN
Inventors: 曾喜军; 张雅; 宋光成; 喻喜贵; 周中勤; 王艳林; 吴踞平
Original assignee: Hubei Xiangyun Chemical Equipment Manufacturing Co ltd
Current assignee: Hubei Xiangyun Chemical Equipment Manufacturing Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-05-27
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses a liquid nitrogen storage tank safe in use, which relates to the technical field of storage tanks and comprises an outer tank, an inner tank, a tank cover and a cover cap, wherein the inner tank is arranged inside the outer tank, the inner tank and the outer tank are connected together through a reinforcing frame, the top of the outer tank is provided with an opening, the tank cover is rotatably arranged at the opening through a rotating shaft, one end of the tank cover, far away from the rotating shaft, is connected with the outer tank through a bolt, the cover cap covers the outer tank and seals the outer tank, the storage tank is more convenient and simple to maintain, meanwhile, the top of the inner tank is provided with an exhaust hole, the cover cap is arranged on the bolt at the top of the exhaust hole, a sealing plug inside the cover cap is tightly pressed at the top of the exhaust hole under the action of a connecting spring to seal and shield the exhaust hole, when nitrogen in the inner tank is excessive, high-pressure gas can push the sealing plug upwards to move to discharge the gas from a side hole, reduce the inside pressure of inner tank to with the shroud setting at the top of inner tank, guaranteed the pureness nature of liquid nitrogen.

Description

Liquid nitrogen storage jar safe in utilization

Technical Field

The utility model relates to the technical field of storage tanks, in particular to a liquid nitrogen storage tank safe to use.

Background

Liquid nitrogen (Liquid nitrogen), of the formula N2, is Liquid nitrogen gas. The liquid nitrogen is inert, colorless, odorless, non-corrosive, non-combustible and extremely low temperature liquid. Liquid nitrogen need be saved in the holding vessel, but current nitrogen gas storage jar simple structure, and the liquid nitrogen is saved after cominging in and going out to the storage jar through annotating the nitrogen mouth, and current nitrogen gas storage jar prevents through the characteristics of steel bottle received pressure that the back leads to storage jar internal pressure to be higher after the nitrogen gas gasification, and it is not strong to use the security performance, has certain potential safety hazard.

Therefore, Chinese patent (CN108266635B) discloses a liquid nitrogen storage jar safe in utilization, can effectively detect the pressure that forms in the storage jar after the liquid nitrogen gasification, can effectively carry out the refrigeration liquefaction to the nitrogen gas after the gasification, in the nitrogen gas drainage after the liquefaction reaches the inner tank, improved the safety in utilization of storage jar, but its elevating gear sets up inside the liquid nitrogen, causes the pollution to the liquid nitrogen easily to its device maintenance is inconvenient, and it is not convenient enough.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a liquid nitrogen storage tank which is safe to use and is more convenient to maintain.

In order to achieve the purpose, the utility model provides the following technical scheme: the inner tank is arranged in the outer tank, the inner tank and the outer tank are connected together through a reinforcing frame, an opening is formed in the top of the outer tank, the tank cover is rotatably arranged at the opening through a rotating shaft, one end, far away from the rotating shaft, of the tank cover is connected with the outer tank through a bolt, a nitrogen inlet pipe is arranged on the left side wall of the inner tank, a nitrogen outlet pipe is arranged on the right side bottom wall of the inner tank, the end portions of the nitrogen inlet pipe and the nitrogen outlet pipe extend out of the side wall of the outer tank, an exhaust hole is formed in the top of the inner tank, a sealing plug is buckled at the top of the exhaust hole and connected to the bottom wall of a connecting rod, the top end of the connecting rod is slidably arranged in the piston cylinder through a piston plate, the piston cylinder is arranged on the bottom wall of the cover, a cover bolt is arranged on the top wall of the outer tank, and a connecting spring is arranged on the top wall of the piston plate, the other end of the connecting spring is arranged on the top wall of the interior of the piston cylinder, the sealing plug is tightly pressed at the top of the exhaust hole under the action of the connecting spring to complete the sealing and shielding of the exhaust hole, and a plurality of groups of side holes are formed in the side wall of the cover cap.

As a further scheme of the utility model: the inside of cover is provided with the cavity, installs the coiled pipe in the cavity, and the coiled pipe adopts the heat conduction material to make to the both ends of coiled pipe are connected with feed liquor pipe and drain pipe respectively, and feed liquor pipe and drain pipe stretch out from the lateral wall of cover.

As a further scheme of the utility model: the guide plate is installed at the lateral wall top of outer jar, and the bottom of guide plate links together with the top of inner tank to the multiunit drain hole has been seted up at the top of inner tank, and the drain hole is located between shroud and the guide plate, and wherein the bottom of drain hole is connected with the check valve.

As a further scheme of the utility model: the reinforcing frame comprises annular plates and vertical rods, wherein the annular plates are provided with multiple groups, the inner walls of the annular plates are installed on the outer wall of the inner tank, the outer walls of the annular plates are installed on the inner wall of the outer tank, meanwhile, multiple vertical rods are installed between the multiple groups of annular plates, and the bottoms of the vertical rods are installed on the bottom wall of the outer tank.

As a further scheme of the utility model: and a liquid sensor is arranged on the bottom wall of the outer tank.

As a further scheme of the utility model: an air pressure sensor is installed at the top of the tank cover, and the detection end of the air pressure sensor extends into the tank cover.

As a still further scheme of the utility model: the top of the tank cover is provided with a handle.

Due to the adoption of the technical scheme, the utility model has the following advantages: the utility model is provided with the cover cap, the cover cap bolt is arranged at the top of the inner tank, the sealing plug is tightly pressed at the top of the exhaust hole under the action of the connecting spring to complete the sealing and shielding of the exhaust hole, the connecting spring is arranged inside the piston cylinder, the cover cap is arranged at the top of the inner tank, the purity of liquid nitrogen is ensured, meanwhile, the top of the outer tank is provided with an opening, a tank cover is rotatably arranged at the opening through a rotating shaft, one end of the tank cover, far away from the rotating shaft, is connected with the outer tank through the bolt, the covering and sealing of the outer tank are completed through the tank cover, the maintenance of the storage tank is more convenient and simpler, and the practicability of the device is greatly increased.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the cover structure of the present invention.

FIG. 3 is a schematic view of the internal structure of the can lid of the present invention.

Fig. 4 is a schematic view of a reinforcing frame according to the present invention.

As shown in the figure: 1. outer jar, 2, inner tank, 3, cover, 4, shroud, 5, guide plate, 6, reinforcement frame, 7, pivot, 8, advance the nitrogen pipe, 9, go out the nitrogen pipe, 10, liquid sensor, 11, feed liquor pipe, 12, baroceptor, 13, drain pipe, 14, handle, 15, exhaust hole, 16, sealing plug, 17, connecting rod, 18, piston cylinder, 19, piston plate, 20, coupling spring, 21, side opening, 22, drain hole, 23, check valve, 24, coiled pipe, 61, annular plate, 62, montant.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the utility model, a liquid nitrogen storage tank with safe use comprises an outer tank 1, an inner tank 2, a tank cover 3 and a cover cap 4, wherein the inner tank 2 is installed inside the outer tank 1, the inner tank 2 and the outer tank 1 are connected together through a reinforcing frame 6, the top of the outer tank 1 is provided with an opening, the tank cover 3 is rotatably installed at the opening through a rotating shaft 7, one end of the tank cover 3, far away from the rotating shaft 7, is connected with the outer tank 1 through a bolt, the outer tank 1 is covered and sealed through the tank cover 3, a nitrogen inlet pipe 8 is installed on the left side wall of the inner tank 2, a nitrogen outlet pipe 9 is installed on the right side bottom wall of the inner tank 2, the ends of the nitrogen inlet pipe 8 and the nitrogen outlet pipe 9 extend out of the side wall of the outer tank 1 to realize the inlet and outlet of liquid nitrogen, the top of the inner tank 2 is provided with an exhaust hole 15, the top of the exhaust hole 15 is buckled and provided with a sealing plug 16, the top of the sealing plug 16 is connected to the bottom wall of the connecting rod 17, and the top end of the connecting rod 17 is slidably mounted inside the piston cylinder 18 through the piston plate 19, wherein the piston cylinder 18 is mounted on the bottom wall of the cover 4, the cover 4 is bolted on the top wall of the outer tank 1, the bolt mounting mode is adopted, the mounting and dismounting of the cover 4 are facilitated, the maintenance is simpler, meanwhile, the top wall of the piston plate 19 is provided with the connecting spring 20, the other end of the connecting spring 20 is mounted on the top wall of the inside of the piston cylinder 18, wherein the sealing plug 16 is tightly pressed on the top of the exhaust hole 15 under the action of the connecting spring 20, the sealing and shielding of the exhaust hole 15 are completed, and the side wall of the cover 4 is provided with a plurality of groups of side holes 21, when the nitrogen in the inner tank 2 is excessive, the high-pressure gas can push the sealing plug 16 to move upwards to discharge the gas from the side holes 21, thereby reducing the pressure inside the inner tank 2, avoid inner tank 2 to explode the danger, shroud 4 sets up at the top of inner tank 2 simultaneously, has guaranteed the pureness nature of liquid nitrogen, has further increased the practicality of device.

Specifically, a cavity is formed in the tank cover 3, a coiled pipe 24 is installed in the cavity, the coiled pipe 24 is made of a heat conduction material, two ends of the coiled pipe 24 are respectively connected with a liquid inlet pipe 11 and a liquid outlet pipe 13, the liquid inlet pipe 11 and the liquid outlet pipe 13 extend out of the side wall of the tank cover 3, refrigerating liquid is driven by the liquid inlet pipe 11 and the liquid outlet pipe 13 to flow in the coiled pipe 24, so that gaseous nitrogen is refrigerated, meanwhile, a guide plate 5 is installed on the top of the side wall of the outer tank 1, the bottom of the guide plate 5 is connected with the top of the inner tank 2, a plurality of groups of liquid guide holes 22 are formed in the top of the inner tank 2, the liquid guide holes 22 are located between the cover cap 4 and the guide plate 5, and the bottoms of the liquid guide holes 22 are connected with a one-way valve 23; the liquid nitrogen having completed the refrigeration is introduced into the top of the inner vessel 2 through the baffle 5 and flows into the liquid introduction hole 22, and then flows into the inner vessel 2 again under the control of the check valve 23.

Specifically, reinforcing frame 6 includes annular plate 61 and montant 62, wherein annular plate 61 is provided with the multiunit, the inner wall of annular plate 61 is installed on the outer wall of inner tank 2, and the outer wall of annular plate 61 is installed on the inner wall of outer jar 1, install many montants 62 between the multiunit annular plate 61 simultaneously, install on the diapire of outer jar 1 bottom of montant 62, montant 62 links together multiunit annular plate 61, improve reinforcing frame 6's stability, thereby consolidate inner tank 2, improve inner tank 2's compressive property, the security performance is higher.

Preferably, install liquid sensor 10 on the diapire of outer jar 1, when inner tank 2 takes place to reveal, respond to the weeping through liquid sensor 10, in time discover the trouble of inner tank 2, baroceptor 12 is installed at the top of cover 3 simultaneously, and the sense terminal of baroceptor 12 stretches into the inside of cover 3, responds to gaseous nitrogen, when detecting gaseous nitrogen, pours into refrigerant liquid into coiled pipe 24 in, refrigerates the cooling to gaseous nitrogen.

Preferably, the handle 14 is installed at the top of the tank cover 3, so that the tank cover 3 is convenient to open, and the maintenance of the storage tank is more convenient and simpler.

Claims

1. The utility model provides a liquid nitrogen storage jar safe in utilization, includes outer jar (1), inner tank (2), cover (3) and shroud (4), its characterized in that: the inner tank (2) is arranged inside the outer tank (1), wherein the inner tank (2) and the outer tank (1) are connected together through a reinforcing frame (6), an opening is formed in the top of the outer tank (1), a tank cover (3) is rotatably arranged at the opening through a rotating shaft (7), one end, far away from the rotating shaft (7), of the tank cover (3) is connected with the outer tank (1) through a bolt, a nitrogen inlet pipe (8) is arranged on the side wall of the left side of the inner tank (2), a nitrogen outlet pipe (9) is arranged on the bottom wall of the right side of the inner tank (2), the ends of the nitrogen inlet pipe (8) and the nitrogen outlet pipe (9) extend out of the side wall of the outer tank (1), an exhaust hole (15) is formed in the top of the inner tank (2), a sealing plug (16) is buckled and arranged on the top of the exhaust hole (15), the top of the sealing plug (16) is connected to the bottom wall of a connecting rod (17), and the top end of the connecting rod (17) is slidably arranged inside a piston tube (18) through a piston plate (19), wherein piston cylinder (18) is installed on the diapire of shroud (4), shroud (4) bolt mounting is on the roof of outer jar (1), install connecting spring (20) on the roof of piston board (19) simultaneously, the other end of connecting spring (20) is installed on the inside roof of piston cylinder (18), wherein sealing plug (16) compresses tightly at the top of exhaust hole (15) under connecting spring's (20) effect, accomplish the sealed sheltering from to exhaust hole (15), and seted up multiunit side opening (21) on the lateral wall of shroud (4).

2. A liquid nitrogen storage tank safe in use according to claim 1, wherein: the inside of cover (3) is provided with the cavity, installs coiled pipe (24) in the cavity, and coiled pipe (24) adopt the heat conduction material to make to the both ends of coiled pipe (24) are connected with feed liquor pipe (11) and drain pipe (13) respectively, and feed liquor pipe (11) and drain pipe (13) stretch out from the lateral wall of cover (3).

3. A liquid nitrogen storage tank safe in use according to claim 2, wherein: guide plate (5) are installed at the lateral wall top of outer jar (1), and the bottom of guide plate (5) links together with the top of inner tank (2) to multiunit drain hole (22) have been seted up at the top of inner tank (2), and drain hole (22) are located between shroud (4) and guide plate (5), and wherein the bottom of drain hole (22) is connected with check valve (23).

4. A liquid nitrogen storage tank safe in use according to claim 1, wherein: reinforcing frame (6) include annular plate (61) and montant (62), and wherein annular plate (61) are provided with the multiunit, and the inner wall of annular plate (61) is installed on the outer wall of inner tank (2) to the outer wall of annular plate (61) is installed on the inner wall of outer jar (1), installs many montants (62) between multiunit annular plate (61) simultaneously, and the bottom of montant (62) is installed on the diapire of outer jar (1).

5. A liquid nitrogen storage tank safe in use according to claim 1, wherein: and a liquid sensor (10) is arranged on the bottom wall of the outer tank (1).

6. A liquid nitrogen storage tank safe in use according to claim 1, wherein: an air pressure sensor (12) is installed at the top of the tank cover (3), and the detection end of the air pressure sensor (12) extends into the tank cover (3).

7. A liquid nitrogen storage tank safe in use according to claim 1, wherein: the top of the tank cover (3) is provided with a handle (14).