Ammonia water loading airtight device

Abstract

The utility model discloses an ammonia water loading airtight device, which relates to the technical field of ammonia water loading and comprises an ammonia storage tank, a loading tank and a negative pressure tank. Communicating pipelines are communicated and connected between the ammonia storage tank and the loading tank, between the negative pressure tank and the loading tank and between the negative pressure tank and the tail gas treatment tower, and an ammonia water pump is arranged on the communicating pipeline between the ammonia storage tank and the loading tank; a barometer is arranged on the communicating pipeline between the negative pressure tank and the loading tank, an exhaust fan is arranged on the communicating pipeline between the negative pressure tank and the tail gas treatment tower, and a negative pressure pipeline is arranged at the position, corresponding to the exhaust fan, of one side of the negative pressure tank; the negative pressure system pumps ammonia gas into the workshop process system and then collects the ammonia gas into the tail gas treatment tower for deamination treatment, so that the ammonia gas is prevented from leaking into the air, and the environment is prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia water loading, in particular to an ammonia water loading airtight device. Background Art

[0002] During the ammonia loading process, ammonia from the ammonia storage tank is transferred to the ammonia tank truck via a loading pump. Traditionally, the loading pipeline and gas-phase balancing pipeline are secured, followed by the opening of the tank outlet valve, the ammonia pump inlet valve, the start of the ammonia pump, and the slow opening of the ammonia pump outlet valve to load the truck. Simultaneously, the gas-phase balancing valve is opened. The driver is not allowed to leave the site during loading and must monitor the tank truck liquid level at all times. When the tank truck liquid level is visually 300 mm from the top, the ammonia pump outlet valve is closed, the pump is stopped, and the ammonia pump inlet valve is closed. During the traditional ammonia loading process, even with the presence of a gas-phase balancing valve, the pressure in the ammonia storage tank remains high, allowing vaporized ammonia to easily volatilize and leak into the air, polluting the external environment. Utility Model Content

[0003] The purpose of the utility model is to provide an airtight device for loading ammonia water, so as to solve the problem that in the traditional loading process of ammonia water proposed in the above background technology, even if there is a gas phase balance valve, the pressure in the ammonia water storage tank is still high during the loading process, and the gaseous ammonia is easily volatilized and leaked into the air, causing pollution to the external environment.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ammonia water loading airtight device, comprising an ammonia storage tank, a loading tank and a negative pressure tank, wherein the negative pressure tank is provided with an exhaust gas treatment tower on a side away from the loading tank, and connecting pipes are connected between the ammonia storage tank and the loading tank, between the negative pressure tank and the loading tank, and between the negative pressure tank and the exhaust gas treatment tower. An ammonia water pump is provided on the connecting pipe between the ammonia storage tank and the loading tank, a pressure gauge is provided on the connecting pipe between the negative pressure tank and the loading tank, an exhaust fan is provided on the connecting pipe between the negative pressure tank and the exhaust gas treatment tower, and a negative pressure pipe is provided on one side of the negative pressure tank and at a position corresponding to the exhaust fan.

[0005] Preferably, an ammonia valve is provided on the side of the connecting pipe between the ammonia storage tank and the loading tank close to the ammonia storage tank, an ammonia output valve is provided on the side of the connecting pipe between the ammonia storage tank and the loading tank close to the loading tank, an ammonia pressure gauge is provided on the upper end of the other side of the ammonia storage tank, and an ammonia filling port is provided on the lower end of the other side of the ammonia storage tank.

[0006] Preferably, a negative pressure valve is provided on the side of the communicating pipe between the negative pressure tank and the loading tank close to the negative pressure tank, and a negative pressure control valve is provided on the side of the loading tank on the communicating pipe between the negative pressure tank and the loading tank.

[0007] Preferably, a tail gas output valve is provided on the side of the communicating pipe between the negative pressure tank and the tail gas treatment tower close to the negative pressure tank.

[0008] Preferably, an air intake control valve is provided on one side of the negative pressure tank at a position corresponding to the pressure gauge.

[0009] Compared with the existing technology, the beneficial effects of the utility model are: on the basis of traditional ammonia loading, the vacuum negative pressure system of the workshop process system is utilized to pump the loading tank into a micro-negative pressure through the negative pressure tank. Even if the gaseous ammonia evaporates, the negative pressure system will pump the gaseous ammonia to the workshop process system and then collect it to the tail gas deamination tower for deamination treatment, thereby preventing the gaseous ammonia from leaking into the air and avoiding environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0011] In the figure: 1-ammonia storage tank, 2-loading tank, 3-negative pressure tank, 4-exhaust treatment tower, 5-connecting pipe, 6-ammonia pump, 7-pressure gauge, 8-exhaust fan, 9-negative pressure pipe, 10-ammonia valve, 11-ammonia output valve, 12-ammonia pressure gauge, 13-ammonia filling port, 14-negative pressure valve, 15-negative pressure control valve, 16-exhaust output valve, 17-intake control valve. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] See also Figure 1 The utility model provides an ammonia water loading airtight device, comprising an ammonia storage tank 1, a loading tank 2 and a negative pressure tank 3. The negative pressure tank 3 is provided with an exhaust gas treatment tower 4 on a side away from the loading tank 2. A connecting pipe 5 is connected between the ammonia storage tank 1 and the loading tank 2, between the negative pressure tank 3 and the loading tank 2, and between the negative pressure tank 3 and the exhaust gas treatment tower 4. An ammonia water pump 6 is provided on the connecting pipe 5 between the ammonia storage tank 1 and the loading tank 2, a pressure gauge 7 is provided on the connecting pipe 5 between the negative pressure tank 3 and the loading tank 2, an exhaust fan 8 is provided on the connecting pipe 5 between the negative pressure tank 3 and the exhaust gas treatment tower 4, and a negative pressure pipe 9 is provided on one side of the negative pressure tank 3 and at a position corresponding to the exhaust fan 8.

[0014] During use, first connect the external negative pressure system with the negative pressure tank 3 through the negative pressure pipe 9, and pump the interior of the negative pressure tank 3 into a negative pressure state, and then pump the air inside the loading tank 2 into the interior of the negative pressure tank 3 through the connecting pipe 5, so that the interior of the loading tank 2 maintains a slightly negative pressure state, and the air pressure inside the loading tank 2 is detected in real time by setting a barometer 7, and then the ammonia storage tank 1 is connected with the loading tank 2 through the connecting pipe 5, and the ammonia pump 6 is turned on to pump the ammonia water stored in the ammonia storage tank 1 into the interior of the loading tank 2. At this time, the slightly negative pressure state inside the loading tank 2 is maintained, and the gas generated when the ammonia water is loaded is pumped into the interior of the negative pressure tank 3. After loading is completed, the ammonia storage tank 1, the loading tank 2 and the negative pressure tank 3 are separated in turn, and the exhaust gas is output to the interior of the exhaust gas treatment tower 4 through the exhaust fan 8, and the exhaust gas generated when the ammonia water is loaded is treated by the exhaust gas treatment tower 4.

[0015] An ammonia valve 10 is provided on the connecting pipe 5 between the ammonia storage tank 1 and the loading tank 2 on the side close to the ammonia storage tank 1, and an ammonia output valve 11 is provided on the connecting pipe 5 between the ammonia storage tank 1 and the loading tank 2 on the side close to the loading tank 2. An ammonia pressure gauge 12 is provided on the upper end of the other side of the ammonia storage tank 1, and an ammonia filling port 13 is provided on the lower end of the other side of the ammonia storage tank 1. When loading ammonia, the ammonia storage tank 1 and the loading tank 2 are connected through the connecting pipe 5. First, the ammonia valve 10 is opened so that ammonia can flow into the interior of the ammonia pump 6. Then, the ammonia output valve 11 is opened and the ammonia pump 6 is turned on to pump ammonia into the interior of the loading tank 2. The pressure inside the ammonia storage tank 1 is detected by the ammonia pressure gauge 12, and ammonia is input into the interior of the loading tank 2 through the ammonia filling port 13.

[0016] A negative pressure valve 14 is provided on the side of the connecting pipe 5 between the negative pressure tank 3 and the loading tank 2 close to the negative pressure tank 3, and a negative pressure control valve 15 is provided on the side of the loading tank 2 on the connecting pipe 5 between the negative pressure tank 3 and the loading tank 2. The negative pressure tank 3 and the loading tank 2 are connected through the connecting pipe 5. When loading ammonia water, the negative pressure valve 14 is first opened. At this time, the internal pressure of the negative pressure tank 3 is detected by the pressure gauge 7, and then the negative pressure control valve 15 is opened to connect the negative pressure tank 3 with the loading tank 2, and the negative pressure state inside the loading tank 2 is controlled by the opening of the negative pressure control valve 15.

[0017] A tail gas output valve 16 is provided on the connecting pipe 5 between the negative pressure tank 3 and the tail gas treatment tower 4 on one side close to the negative pressure tank 3. When loading ammonia water, the tail gas output valve 16 is closed. When treating the tail gas inside the negative pressure tank 3, the negative pressure valve 14 is closed, and the exhaust fan 8 can output the tail gas inside the negative pressure tank 3 to the inside of the tail gas treatment tower 4 through the connecting pipe 5.

[0018] An air intake control valve 17 is provided on one side of the negative pressure tank 3 at a position corresponding to the barometer 7. When the exhaust fan 8 outputs the exhaust gas inside the negative pressure tank 3 to the exhaust gas treatment tower 4, the negative pressure valve 14 is closed and the air intake control valve 17 is opened to ensure the internal air pressure of the negative pressure tank 3.

[0019] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtight device for loading ammonia water, characterized by: The invention comprises an ammonia storage tank (1), a loading tank (2) and a negative pressure tank (3); a tail gas treatment tower (4) is provided on the side of the negative pressure tank (3) away from the loading tank (2); a connecting pipe (5) is connected between the ammonia storage tank (1) and the loading tank (2), between the negative pressure tank (3) and the loading tank (2), and between the negative pressure tank (3) and the tail gas treatment tower (4); an ammonia water pump (6) is provided on the connecting pipe (5) between the ammonia storage tank (1) and the loading tank (2); a pressure gauge (7) is provided on the connecting pipe (5) between the negative pressure tank (3) and the loading tank (2); an exhaust fan (8) is provided on the connecting pipe (5) between the negative pressure tank (3) and the tail gas treatment tower (4); and a negative pressure pipe (9) is provided on one side of the negative pressure tank (3) and at a position corresponding to the exhaust fan (8).

2. The ammonia water loading airtight device according to claim 1, characterized in that: An ammonia valve (10) is provided on the side of the communicating pipe (5) between the ammonia storage tank (1) and the loading tank (2) close to the ammonia storage tank (1), an ammonia output valve (11) is provided on the side of the communicating pipe (5) between the ammonia storage tank (1) and the loading tank (2) close to the loading tank (2), an ammonia pressure gauge (12) is provided on the upper end of the other side of the ammonia storage tank (1), and an ammonia filling port (13) is provided on the lower end of the other side of the ammonia storage tank (1).

3. The ammonia water loading airtight device according to claim 1, characterized in that: A negative pressure valve (14) is provided on the side of the communication pipe (5) between the negative pressure tank (3) and the loading tank (2) close to the negative pressure tank (3), and a negative pressure control valve (15) is provided on the side of the loading tank (2) on the communication pipe (5) between the negative pressure tank (3) and the loading tank (2).

4. The ammonia water loading airtight device according to claim 1, characterized in that: A tail gas output valve (16) is provided on the communication pipe (5) between the negative pressure tank (3) and the tail gas treatment tower (4) on a side close to the negative pressure tank (3).

5. The ammonia water loading airtight device according to claim 1, characterized in that: An air intake control valve (17) is provided on one side of the negative pressure tank (3) at a position corresponding to the air pressure gauge (7).

Images