Liquid ammonia storage device

Abstract

The utility model relates to the technical field of storage devices, in particular to a liquid ammonia storage device which comprises a first storage tank and a second storage tank, and the first storage tank and the second storage tank are connected with the end of a liquid inlet header pipe through liquid inlet branch pipes and connected with the end of an air inlet header pipe through air inlet branch pipes. A shut-off valve and a liquid inlet check valve are arranged on the liquid inlet header pipe, and shut-off valves are arranged on the liquid inlet branch pipe, the air inlet branch pipe and the air inlet header pipe; the storage tank I and the storage tank II are connected with the end part of an exhaust manifold through exhaust branch pipes; the drainage branch pipe is connected with the end part of a drainage main pipe; shut-off valves are arranged on the exhaust branch pipe, the exhaust main pipe, the liquid drainage branch pipe and the liquid drainage main pipe; according to the utility model, when the tank needs to be reversed, the pressure of one tank body is increased, and liquid ammonia in one tank body is conveyed into the other tank body through the liquid inlet branch pipe; and the pipe diameter of the liquid inlet branch pipe is large, so that tank dumping can be rapidly completed, and rapid isolation of a leaked tank body is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a storage device technical field, specifically a liquid ammonia storage device. BACKGROUND

[0002] Liquid ammonia is toxic, and when the ammonia storage is greater than 10 tons, it constitutes a major hazard source. If the liquid ammonia storage tank leaks and cannot be plugged or isolated, the tank needs to be emptied to reduce the leakage or isolate the leakage point. The most common way now is to empty the tank from the drain pipe. The drain pipe is connected to the downstream equipment and needs stable flow. To accurately control the flow, the drain pipe has a small diameter. The degree of harm of the liquid ammonia leakage accident depends on the speed of tank emptying. The drain pipe has a small diameter, and the tank is emptied slowly, which takes a long time to empty the liquid ammonia tank and is not conducive to the rapid isolation of the liquid ammonia tank. SUMMARY

[0003] The main purpose of the utility model is to provide a liquid ammonia storage device to solve the problem of slow tank emptying from the drain pipe in the prior art, which is not conducive to the rapid isolation of the liquid ammonia tank.

[0004] To achieve the above purpose, the utility model provides a liquid ammonia storage device, which comprises a storage tank one and a storage tank two. The storage tank one and the storage tank two are connected to the end of the liquid inlet main pipe through the liquid inlet branch pipe and connected to the end of the gas inlet main pipe through the gas inlet branch pipe. A shut-off valve and a liquid inlet check valve are arranged on the liquid inlet main pipe. Shut-off valves are arranged on the liquid inlet branch pipe, the gas inlet branch pipe and the gas inlet main pipe.

[0005] Further, the storage tank one and the storage tank two are connected to the end of the gas outlet main pipe through the gas outlet branch pipe, and connected to the end of the liquid outlet main pipe through the liquid outlet branch pipe. Shut-off valves are arranged on the gas outlet branch pipe, the gas outlet main pipe, the liquid outlet branch pipe and the liquid outlet main pipe.

[0006] Further, the gas outlet main pipe is connected to the inlet of the compressor, and the gas inlet main pipe is connected to the outlet of the compressor.

[0007] Further, the gas inlet main pipe is also connected to the filling pipe, and a shut-off valve is arranged on the filling pipe.

[0008] The utility model can increase the pressure of one of the storage tanks when tank emptying is needed, and the liquid ammonia in one of the storage tanks can be delivered to the other storage tank through the liquid inlet branch pipe. The liquid inlet branch pipe has a large diameter, which can quickly complete the tank emptying and realize the rapid isolation of the leaking storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0009] The drawings accompanying the specification are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation on the utility model.

[0010] Figure 1 Structure diagram of liquid ammonia storage device in the embodiment;

[0011] In the figure: 1, storage tank one; 2, storage tank two; 3, liquid inlet main pipe; 4, liquid outlet main pipe; 5, gas inlet main pipe; 6, gas outlet main pipe; 7, liquid inlet branch pipe; 8, liquid outlet branch pipe; 9, gas inlet branch pipe; 10, gas outlet branch pipe; 11, liquid inlet check valve; 12, compressor; 13, filling pipe. DETAILED DESCRIPTION

[0012] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0013] As Figure 1 shown, according to the embodiment of the present application, a liquid ammonia storage device is provided, which comprises a storage tank one 1 and a storage tank two 2, the inner diameters of the storage tank one 1 and the storage tank two 2 are both 280 cm, the bottom of the storage tank one 1 and the bottom of the storage tank two 2 are both connected with a liquid inlet branch pipe 7, the liquid inlet branch pipe 7 is 20 cm away from the bottom of the storage tank one 1 and the bottom of the storage tank two 2; the storage tank one 1 and the storage tank two 2 are connected with the end of a liquid inlet main pipe 3 through the liquid inlet branch pipe 7, and are connected with the end of a gas inlet main pipe 5 through a gas inlet branch pipe 9, the gas inlet branch pipe 9 is provided with a gas inlet check valve; the liquid inlet main pipe 3 is provided with a shut-off valve and a liquid inlet check valve 11, the liquid inlet branch pipe 7, the gas inlet branch pipe 9 and the gas inlet main pipe 5 are all provided with a shut-off valve, the shut-off valve comprises a pneumatic valve and a manual valve; the inner diameters of the liquid inlet main pipe 3 and the liquid inlet branch pipe 7 are 10 cm.

[0014] The storage tank one 1 and the storage tank two 2 are connected with the end of a gas outlet main pipe 6 through a gas outlet branch pipe 10, and are connected with the end of a liquid outlet main pipe 4 through a liquid outlet branch pipe 8; the gas outlet branch pipe 10, the gas outlet main pipe 6, the liquid outlet branch pipe 8 and the liquid outlet main pipe 4 are all provided with a shut-off valve, the shut-off valve comprises a pneumatic valve and a manual valve; the inner diameters of the liquid outlet branch pipe 8 and the liquid outlet main pipe 4 are 2.5 cm.

[0015] The gas outlet main pipe 6 is connected with the inlet of a compressor 12, and the gas inlet main pipe 5 is connected with the outlet of the compressor 12.

[0016] In some embodiments, the gas inlet main pipe 5 is further connected with a filling pipe 13, the filling pipe 13 is provided with a shut-off valve, and the filling pipe 13 and the liquid inlet main pipe 3 are used for being connected with a filling system; ammonia gas is delivered into the filling system, the pressure of the filling system is increased, and the liquid ammonia in the filling system can be delivered into the storage tank one 1 and the storage tank two 2 through the liquid inlet main pipe 3.

[0017] When the tank 1 appears leakage and needs to be inverted, the valve on the exhaust branch pipe 10 connected with the tank 1 is closed, the valve on the exhaust branch pipe 10 connected with the tank 2 is opened, the valve on the exhaust main pipe 6 is opened, the valve on the inlet main pipe 5 is opened; the valve on the inlet branch pipe 9 connected with the tank 2 is closed, the valve on the inlet branch pipe 9 connected with the tank 1 is opened; the valve on the liquid inlet branch pipe 7 is opened; the rest of the closed valves are closed; the compressor 12 is used to extract the ammonia in the tank 2 and deliver it to the tank 1, so as to increase the pressure in the tank 1 and make the pressure in the tank 1 greater than that in the tank 2; under the action of the pressure difference, the liquid ammonia in the tank 1 is delivered to the tank 2 through the liquid inlet branch pipe 7; the liquid inlet branch pipe 7 has a large diameter and can quickly complete the inversion of the tank, so as to quickly isolate the leaking tank 1.

[0018] When the tank 2 appears leakage and needs to be inverted, the liquid ammonia in the tank 2 is delivered to the tank 1 through the liquid inlet branch pipe 7, so as to quickly isolate the leaking tank 2.

[0019] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid ammonia storage device comprising a storage tank one (1) and a storage tank two (2), characterized in that, The tank one (1) and tank two (2) are connected with the end of the liquid inlet main pipe (3) through the liquid inlet branch pipe (7), and connected with the end of the gas inlet main pipe (5) through the gas inlet branch pipe (9); the liquid inlet main pipe (3) is provided with a shutoff valve and a check valve (11), and the liquid inlet branch pipe (7), the gas inlet branch pipe (9) and the gas inlet main pipe (5) are all provided with a shutoff valve.

2. The liquid ammonia storage device of claim 1, wherein The tank one (1) and tank two (2) are connected with the end of the exhaust main pipe (6) through the exhaust branch pipe (10), and connected with the end of the liquid outlet main pipe (4) through the liquid outlet branch pipe (8); the exhaust branch pipe (10), the exhaust main pipe (6), the liquid outlet branch pipe (8) and the liquid outlet main pipe (4) are all provided with a shutoff valve.

3. The liquid ammonia storage apparatus of claim 2, wherein The exhaust main pipe (6) is connected with the inlet of the compressor (12), and the gas inlet main pipe (5) is connected with the outlet of the compressor (12).

4. The liquid ammonia storage apparatus as claimed in claim 3, characterized by The gas inlet main pipe (5) is further connected with the filling pipe (13), and the filling pipe (13) is provided with a shutoff valve.

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