Liquid ammonia storage tank with double safety valves

Abstract

The utility model relates to a liquid nitrogen storage tank safety valve, in particular to a liquid nitrogen storage tank with double safety valves, which comprises a tank body, the lower portion of the tank body is communicated with a discharging pipe, the discharging pipe is provided with a first valve and a second valve, and the first valve and the second valve respectively comprise a first check block and a second check block. The first stop block and the second stop block are transversely provided with a front discharging port and a rear discharging port respectively, the first stop block is provided with a penetrating hole, the second stop block is provided with a screw hole, a screw is in threaded fit with the interior of the screw hole, a sliding rod is matched with the interior of the penetrating hole, the upper ends of the sliding rod and the screw penetrate out of the discharging pipe, the upper end of the sliding rod is fixedly connected with an iron sheet, and an electromagnet is fixedly arranged under the iron sheet. The electromagnet is fixedly connected with the discharging pipe through a spring, and an air inlet valve is arranged above the tank body. By means of the discharging pipe, on the premise that the flow of the discharging pipe is controlled, when leakage occurs, the discharging pipe can be rapidly closed, compared with manual closing of a valve by workers, the speed is higher, the leakage amount is reduced, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid nitrogen storage tank safety valve, specifically a kind of double safety valve liquid ammonia storage tank. BACKGROUND

[0002] Liquid nitrogen storage tank, mainly for the tank body of transporting and storing liquid nitrogen. Among them, the liquid nitrogen in the tank body needs to be discharged when needed, and when discharging, it is controlled by valve.

[0003] Among them, the existing liquid nitrogen storage tank when discharging liquid nitrogen, to ensure the controllable flow, often use manual gate valve to control flow, although it can ensure the controllable flow, but when leakage occurs, workers need to manually close, speed is slow, prone to security risks. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of double safety valve liquid ammonia storage tank to solve the defects in prior art.

[0005] The utility model is realized by the following technical solutions:

[0006] A kind of double safety valve liquid ammonia storage tank, including tank body, the lower part of tank body is communicated with discharge pipe, first valve and second valve are provided on the discharge pipe, the first valve and second valve respectively include first stopper, second stopper, first stopper is transversely provided in discharge pipe and blocks discharge pipe, first stopper top surface is vertically provided with the through hole that passes out with front discharge port, second stopper top surface is provided with the screw hole that passes out with rear discharge port, screw hole is threadedly cooperated with screw rod, through hole is cooperated with slide bar, slide bar and screw rod upper end are all passed out discharge pipe and slide bar upper end is fixedly connected with iron sheet, electromagnet is fixedly arranged below iron sheet, iron sheet and discharge pipe are fixedly connected between spring, tank body top is equipped with inlet valve.

[0007] When using, when not leaking, iron sheet makes slide bar lower end be located above front discharge port under the support of spring, so that it can ensure that liquid nitrogen passes through front discharge port smoothly, and the flow in discharge pipe is controlled by rotating screw rod to control the plugging of rear discharge hole by screw rod, to control flow. When leakage occurs, the operator quickly starts electromagnet, and the electromagnet generates magnetism when electrified, so as to drive the iron sheet to move downward quickly, so as to make the slide bar quickly block front discharge port, to realize quick closure, compared with worker manually closing valve, speed is faster, to reduce leakage, reduce the occurrence of security risks.

[0008] As preferred, the upper part of the tank body is transversely communicated with inlet pipe, the inlet pipe is parallel with the discharge pipe, and the inlet valve is arranged on the inlet pipe.

[0009] As preferred, the air inlet valve comprises an inner fixed block fixedly arranged in the air inlet pipe and blocking the air inlet pipe, the inner fixed block is transversely provided with an air inlet hole and vertically provided with a vertical hole, a vertical rod is arranged in the vertical hole, the vertical rod is transversely provided with a through hole, and the two ends of the vertical rod pass through the air inlet pipe and are driven to move up and down along the vertical hole by a driving device. The up and down movement of the vertical rod can realize the alignment and misalignment of the through hole on the vertical rod and the air inlet hole, and further realize the opening and closing of the air inlet valve. The closing of the air inlet valve can further prevent leakage.

[0010] As preferred, the driving device comprises a connecting rod, one end of the connecting rod is perpendicularly connected with the iron sheet, and the other end is coaxially fixedly connected with the lower end of the vertical rod. When the slide rod blocks the front discharge port, the vertical rod blocks the air inlet hole. When the slide rod misaligns the front discharge port, the air inlet hole is communicated with the through hole. The connecting rod can realize the synchronous opening and closing of the first valve and the air inlet valve, and further prevent leakage.

[0011] As preferred, the upper end of the screw rod is fixedly provided with a rotating handle, and the upper end of the vertical rod is provided with a shielding plate matched with the outer wall of the air inlet pipe. The rotating handle can facilitate the rotation of the screw rod, and the shielding plate can shield the place where the vertical rod passes through.

[0012] The use of the present application can quickly close the discharge pipe when leakage occurs under the premise of meeting the control of the discharge pipe flow, which is faster than manually closing the valve by workers, thereby reducing the leakage amount and the occurrence of safety hazards. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0014] Figure 1 is a structural schematic view of the present application;

[0015] Figure 2 is Figure 1 is a I partial enlarged view of

[0016] shown in the figure:

[0017] 1, tank, 2, discharge pipe, 3, first stop block, 4, second stop block, 5, front discharge port, 6, rear discharge port, 7, screw rod, 8, slide rod, 9, iron sheet, 10, electromagnet, 11, air inlet pipe, 12, inner fixed block, 13, vertical rod, 14, connecting rod, 15, rotating handle, 16, shielding plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] A double safety valve liquid ammonia storage tank, as shown in Figure 1 and Figure 2 . It comprises a tank body 1, a discharge pipe 2 is communicated with the lower part of the tank body 1, a first valve and a second valve are arranged on the discharge pipe 2, the first valve and the second valve respectively comprise a first block 3 and a second block 4 fixedly arranged in the discharge pipe 2 and blocking the discharge pipe 2, the first block 3 is transversely provided with a front discharge port 5, the second block 4 is transversely provided with a rear discharge port 6, a through hole is vertically provided in the top surface of the first block 3 downwardly and communicated with the front discharge port 5, a screw hole is provided in the top surface of the second block 4 downwardly and communicated with the rear discharge port 6, a screw rod 7 is threadedly matched in the screw hole, a sliding rod 8 is matched in the through hole, the sliding rod 8 slides along the through hole, the upper ends of the sliding rod 8 and the screw rod 7 are both protruded out of the discharge pipe 2 and the upper end of the sliding rod 8 is fixedly connected with an iron sheet 9, an electromagnet 10 is arranged below the iron sheet 9 and fixedly arranged on the discharge pipe 2, transverse plates are fixedly arranged on both sides of the iron sheet, the transverse plates are fixedly connected with the discharge pipe 2 through springs, an air inlet valve is arranged above the tank body 1, and the sliding rod 8 is sealingly slid at the protruding position of the discharge pipe 2.

[0020] When the utility model is used, when there is no leakage, the iron sheet 9 is supported by the spring so that the lower end of the sliding rod 8 is located above the front discharge port 5, so that the liquid nitrogen can smoothly pass through the front discharge port 5, and the flow in the discharge pipe 2 is controlled by rotating the screw rod 7 to control the blocking of the rear discharge hole by the screw rod 7, so as to control the flow. When leakage occurs, the operator quickly starts the electromagnet 10, the electromagnet 10 generates magnetism after being electrified, so as to drive the iron sheet 9 to quickly move downward, so as to quickly block the front discharge port 5 by the sliding rod 8, so as to realize quick closing. Compared with manually closing the valve by the worker, the speed is faster, so as to reduce the leakage amount and reduce the occurrence of safety hazards.

[0021] The upper part of the tank body 1 is transversely communicated with an air inlet pipe 11, the air inlet pipe 11 is parallel with the discharge pipe 2, and an air inlet valve is arranged on the air inlet pipe 11. The air inlet valve comprises an inner fixed block 12 fixedly arranged in the air inlet pipe 11 and blocking the air inlet pipe 11, the inner fixed block 12 is transversely provided with an air inlet hole and vertically provided with a vertical hole, a vertical rod 13 is arranged in the vertical hole in a matched mode, the vertical rod 13 is transversely provided with a through hole, both ends of the vertical rod 13 pass through the air inlet pipe 11 and are slidingly sealed, and the vertical rod 13 is driven to move up and down along the vertical hole by a driving device. The up and down movement of the vertical rod 13 can realize that the through hole on the vertical rod 13 is opposite to the air inlet hole and is dislocated, and further realizes that the air inlet valve is opened and closed, and the air inlet valve is closed, and then leakage can be further prevented.

[0022] The driving device comprises a connecting rod 14, one end of the connecting rod 14 is connected with the iron sheet 9 in a perpendicular mode, the other end of the connecting rod 14 is coaxially fixedly connected with the lower end of the vertical rod 13, when the sliding rod 8 blocks the front discharge port 5, the vertical rod 13 blocks the air inlet hole, when the sliding rod 8 is dislocated from the front discharge port 5, the air inlet hole is communicated with the through hole. The connecting rod 14 can realize that the first valve and the air inlet valve are synchronously opened and closed, and then when leakage occurs, the first valve and the air inlet valve are both closed, and leakage can be better prevented.

[0023] The upper end of the screw rod 7 is fixedly provided with a rotating handle 15, and the upper end of the vertical rod 13 is provided with a shielding plate 16 matched with the outer wall of the air inlet pipe 11. The rotating handle 15 can facilitate the rotation of the screw rod 7, and the shielding plate 16 can shield the passing-through position of the vertical rod 13.

[0024] The use of the application can quickly close the discharge pipe 2 when leakage occurs under the premise of meeting the control of the flow of the discharge pipe 2, compared with the manual closing of the valve by workers, the speed is faster, and then the leakage amount is reduced, and the occurrence of safety hazards is reduced.

[0025] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A double safety valve liquid ammonia storage tank characterized by: The utility model provides a kind of tank, the lower part of tank is communicated with discharge pipe, first valve and second valve are provided on the discharge pipe, the first valve and the second valve include respectively first block, second block fixedly arranged in discharge pipe and block discharge pipe, first block is transversely provided with front discharge port, second block is transversely provided with rear discharge port, the top surface of first block is vertically provided with the through hole of passing out with front discharge port downwards, the top surface of second block is provided with the screw hole of passing out with rear discharge port downwards, screw rod is threadedly cooperated in screw hole, sliding rod is cooperated in through hole, the upper end of sliding rod and screw rod all passes out discharge pipe and the upper end of sliding rod is fixedly connected with iron sheet, electromagnet is fixedly arranged below iron sheet, iron sheet and discharge pipe are fixedly connected between spring, air inlet valve is provided above tank.

2. The dual safety valve liquid ammonia storage tank of claim 1, wherein: The upper part of the tank is transversely communicated with air inlet pipe, the air inlet pipe is parallel with the discharge pipe, and the air inlet valve is arranged on the air inlet pipe.

3. The dual safety valve liquid ammonia storage tank of claim 2, wherein: The air inlet valve includes an inner fixed block fixedly arranged in the air inlet pipe to close the air inlet pipe, the inner fixed block is transversely provided with an air inlet hole and vertically provided with a vertical hole, a vertical rod is arranged in the vertical hole, the vertical rod is transversely provided with a through hole, and the two ends of the vertical rod pass through the air inlet pipe and are driven to move up and down along the vertical hole by a driving device.

4. The dual safety valve liquid ammonia storage tank of claim 3, wherein: The driving device includes a connecting rod, one end of the connecting rod is perpendicularly connected with the iron sheet, and the other end is coaxially fixedly connected with the lower end of the vertical rod, when the sliding rod closes the front discharge port, the vertical rod closes the air inlet hole, and when the sliding rod is staggered with the front discharge port, the air inlet hole is communicated with the through hole.

5. The dual safety valve liquid ammonia storage tank of claim 4, wherein: The upper end of the screw rod is fixedly provided with a rotating handle, and the upper end of the vertical rod is provided with a shielding plate matched with the outer wall of the air inlet pipe.

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