Protective device for air separation liquid ammonia pump

Abstract

The utility model discloses a protective device for an air separation liquid ammonia pump, and relates to the technical field of air separation liquid ammonia pumps, the protective device comprises a base, the top of the base is fixedly connected with a placing frame, the top of the placing frame is provided with a liquid ammonia pump, the bottom of the base is communicated with a liquid box, the top of the base is fixedly connected with a vertical plate, and the vertical plate is fixedly connected with the bottom of the base. The right side of the liquid box is communicated with a first conveying pipe, the left side of the first conveying pipe is rotatably connected with a spraying pipe, the first conveying pipe is communicated with the spraying pipe, and in the emergency treatment process of liquid ammonia leakage, a dilute acid solution is sprayed through the spraying pipe, the concentration of ammonia gas is reduced, and the concentration of harmful gas is reduced; dynamic adjustment of the spraying angle is achieved through the swing mechanism, the spraying pipe sprays a dilute acid solution to a leakage area in a mist form, the dilute acid solution and ammonia gas in the air are subjected to a neutralization reaction, harmless or low-harm salt substances are generated, the concentration of the ammonia gas is effectively reduced, and stimulation to a human body and corrosion to equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of air separation liquid ammonia pumps, and in particular to a protective device for air separation liquid ammonia pumps. Background Technology

[0002] Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong, pungent odor. Its relative density is 0.77 (liquid), melting point is -77.7℃, and boiling point is -33.5℃. Ammonia is an important chemical raw material, and for ease of transportation and storage, gaseous ammonia is usually pressurized or cooled to obtain liquid ammonia. Liquid ammonia is readily soluble in water, forming ammonium ions (NH4+) and hydroxide ions (OH-), resulting in an alkaline solution. It cannot coexist with substances such as acetaldehyde, acrolein, and boron, and decomposes into ammonia and hydrogen at high temperatures. Liquid ammonia has wide industrial applications, but its corrosive nature and high volatility lead to a high rate of chemical accidents. The transportation of liquid ammonia requires a low-temperature, sealed environment; therefore, the requirements for pumps are high. Specialized pumps for liquid ammonia transportation—liquid ammonia pumps—are available, primarily magnetic drive pumps. A significant characteristic of magnetic drive pumps is that they have no shaft seals, meaning there are no dynamic seal leakage points. A magnetic drive pump consists of a pump body, a magnetic drive unit, and a motor.

[0003] When a liquid ammonia pump leaks, it will evaporate into the air. If the concentration is too high, it can cause serious harm. Therefore, it is necessary to deal with the leaked gas in time to reduce its concentration and thus reduce the harm to people. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a protective device for air separation liquid ammonia pumps, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for an air separation liquid ammonia pump, comprising a base, a placement frame fixedly connected to the top of the base, a liquid ammonia pump mounted on the top of the placement frame, a liquid tank connected to the bottom of the base, a vertical plate fixedly connected to the top of the base, a first delivery pipe connected to the right side of the liquid tank, and a spray pipe rotatably connected to the left side of the first delivery pipe, with the first delivery pipe and the spray pipe communicating with each other.

[0006] As a further technical solution of this utility model, a swing mechanism is provided on the left side of the vertical plate. The swing mechanism includes a motor, which is fixedly connected to the right side of the vertical plate. The output end of the motor is fixedly connected to a first rotating rod through a coupling. The first rotating rod movably passes through the vertical plate and extends to its left side.

[0007] As a further technical solution of this utility model, a connecting plate is fixedly connected to the left side of the first rotating rod, and a fixing rod is fixedly connected to the left side of the connecting plate.

[0008] As a further technical solution of this utility model, a second rotating rod is movably passed through the interior of the vertical plate and extends to its left and right sides. The second rotating rod is fixedly connected to the spray pipe. An arc-shaped plate is fixedly connected to the left side of the second rotating rod. A connecting hole is opened inside the arc-shaped plate and is sleeved on the outer wall of the fixed rod. When the liquid ammonia pump leaks, ammonia gas rapidly diffuses into the surrounding air. The device activates the emergency treatment procedure. The dilute acid solution in the liquid tank is transported to the spray pipe through the first conveying pipe, ready for spray neutralization treatment. The motor starts and drives the first rotating rod to rotate through the coupling. The first rotating rod drives the connecting plate and the fixed rod to make circular motion. The fixed rod slides in the connecting hole of the arc-shaped plate, driving the arc-shaped plate and the second rotating rod to swing back and forth within a certain angle range. The second rotating rod is fixedly connected to the spray pipe. Therefore, the spray pipe swings synchronously with the second rotating rod, spraying the dilute acid solution evenly to the leak area in the form of a mist. The dilute acid solution fully contacts the ammonia gas in the air and undergoes a neutralization reaction to generate harmless or low-harm salt substances, effectively reducing the ammonia concentration and reducing irritation to the human body and corrosion to the equipment.

[0009] As a further technical solution of this utility model, the liquid tank is provided with a screening mechanism inside. The screening mechanism includes a chute, which is formed on the inner wall of the liquid tank. A slider is slidably connected inside the chute, and a spring is fixedly connected between the slider and the inner wall of the chute.

[0010] As a further technical solution of this utility model, a sieve plate is fixedly connected to the left side of the slider, a vertical hole is opened on the left side of the liquid tank, and a T-shaped plate is fixedly connected to the left side of the sieve plate, with the T-shaped plate extending to the left through the vertical hole.

[0011] As a further technical solution of this utility model, an abutment rod is fixedly connected to the bottom of the arc-shaped plate. The abutment rod is set at the top of the T-shaped plate. The sprayed absorbent liquid flows back to the liquid tank under the action of gravity, forming a cycle for reuse. During the operation of the swing mechanism, the abutment rod at the bottom of the arc-shaped plate periodically presses down on the T-shaped plate, causing the screen plate to vibrate up and down, forming an automatic sieving effect. The screen plate filters the returned absorbent liquid, removing any solid impurities that may be mixed in, preventing impurities from entering the spraying system and causing blockage of the spray pipe or pipeline, thus ensuring the long-term stable operation of the system.

[0012] This utility model provides a protective device for an air separation liquid ammonia pump, which has the following advantages compared with the prior art:

[0013] 1. This design provides a protective device for an air separation liquid ammonia pump. During emergency handling of liquid ammonia leaks, a dilute acid solution is sprayed through a nozzle to reduce the concentration of ammonia gas and harmful gases. The spray angle is dynamically adjusted through a swing mechanism. The nozzle sprays the dilute acid solution in a mist form to the leak area, where it reacts with the ammonia gas in the air to generate harmless or low-harm salts, effectively reducing the concentration of ammonia gas and minimizing irritation to the human body and corrosion to equipment.

[0014] 2. This design includes a protective device for an air separation liquid ammonia pump. The screening mechanism uses a sieve plate inside the liquid tank to filter the circulating absorbent liquid, removing any solid impurities that may be mixed in. This prevents impurities from entering the spray system and causing blockages in the spray pipes or pipelines, ensuring long-term stable operation of the system. The contact rod periodically presses down on the T-shaped plate, causing the sieve plate to vibrate up and down, creating an automatic sieve cleaning effect, avoiding impurity accumulation, and improving filtration efficiency. Attached Figure Description

[0015] Figure 1 A front view of a protective device for an air-separation liquid ammonia pump;

[0016] Figure 2 A side view of a protective device for an air-separating liquid ammonia pump;

[0017] Figure 3 A partially enlarged view of the swing mechanism of a protective device for an air-separation liquid ammonia pump;

[0018] Figure 4 This is a cross-sectional view of a protective device for an air separation liquid ammonia pump.

[0019] In the diagram: 1. Base; 2. Placement rack; 3. Liquid ammonia pump; 4. Liquid tank; 5. Vertical plate; 6. First delivery pipe; 7. Spray pipe; 8. Swinging mechanism; 811. Motor; 812. First rotating rod; 813. Connecting plate; 814. Fixed rod; 815. Second rotating rod; 816. Arc plate; 817. Connecting hole; 9. Screening mechanism; 911. Slide groove; 912. Sliding block; 913. Spring; 914. Screen plate; 915. Vertical hole; 916. T-shaped plate; 917. Abutment rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution for a protective device for an air separation liquid ammonia pump: A protective device for an air separation liquid ammonia pump includes a base 1, a placement frame 2 fixedly connected to the top of the base 1, a liquid ammonia pump 3 mounted on the top of the placement frame 2, a liquid tank 4 connected to the bottom of the base 1, a vertical plate 5 fixedly connected to the top of the base 1, a first delivery pipe 6 connected to the right side of the liquid tank 4, a nozzle 7 rotatably connected to the left side of the first delivery pipe 6, the first delivery pipe 6 and the nozzle 7 being connected, and a swing mechanism 8 mounted on the left side of the vertical plate 5. The swing mechanism 8 includes a motor 811, which is fixedly connected to the right side of the vertical plate 5. The output end of the motor 811 is fixedly connected to a first rotating rod 812 via a coupling. The first rotating rod 812 movably passes through the vertical plate 5 and extends to its left side. A connecting plate 813 is fixedly connected to the left side of the first rotating rod 812, and a fixing rod 814 is fixedly connected to the left side of the connecting plate 813. A second rotating rod 815 movably passes through the interior of the vertical plate 5 and extends to its left and right sides. The second rotating rod 815 is fixedly connected to the nozzle 7. An arc-shaped plate 816 is fixedly connected to the left side of the 15. A connecting hole 817 is provided inside the arc-shaped plate 816. The connecting hole 817 is fitted onto the outer wall of the fixed rod 814. When the liquid ammonia pump 3 leaks, ammonia gas rapidly diffuses into the surrounding air. The device initiates an emergency response procedure. The dilute acid solution in the liquid tank 4 is transported to the spray pipe 7 through the first delivery pipe 6, ready for spray neutralization treatment. The motor 811 starts, driving the first rotating rod 812 to rotate via the coupling. The first rotating rod 812 drives the connecting plate 813 and the fixed rod 814. The fixed rod 814 slides within the connecting hole 817 of the arc plate 816, causing the arc plate 816 and the second rotating rod 815 to swing back and forth within a certain angle range. The second rotating rod 815 is fixedly connected to the nozzle 7, so the nozzle 7 swings synchronously with the second rotating rod 815, spraying the dilute acid solution evenly into the leak area in a mist form. The dilute acid solution comes into full contact with the ammonia in the air and undergoes a neutralization reaction, generating harmless or low-harm salt substances, effectively reducing the ammonia concentration and reducing irritation to the human body and corrosion to the equipment.

[0022] like Figure 4As shown, a screening mechanism 9 is provided inside the liquid tank 4. The screening mechanism 9 includes a chute 911, which is formed on the inner wall of the liquid tank 4. A slider 912 is slidably connected inside the chute 911. A spring 913 is fixedly connected between the slider 912 and the inner wall of the chute 911. A sieve plate 914 is fixedly connected to the left side of the slider 912. A vertical hole 915 is formed on the left side of the liquid tank 4. A T-shaped plate 916 is fixedly connected to the left side of the sieve plate 914. The T-shaped plate 916 extends to the left through the vertical hole 915. The bottom of the arc-shaped plate 916 is fixed. A contact rod 917 is connected to the top of the T-shaped plate 916. The sprayed absorbent liquid flows back to the liquid tank 4 under gravity, forming a cycle. During the operation of the swing mechanism 8, the contact rod 917 at the bottom of the arc plate 816 periodically presses down on the T-shaped plate 916, causing the sieve plate 914 to vibrate up and down, forming an automatic sieve cleaning effect. The sieve plate 914 filters the returned absorbent liquid, removing any solid impurities that may be mixed in, preventing impurities from entering the spray system and causing blockage of the spray pipe 7 or pipeline, thus ensuring the long-term stable operation of the system.

[0023] The working principle of this utility model is as follows: When the liquid ammonia pump 3 leaks, the ammonia gas rapidly diffuses into the surrounding air. The device activates the emergency response procedure. The dilute acid solution in the liquid tank 4 is transported to the spray nozzle 7 through the first delivery pipe 6, ready for spray neutralization treatment. The motor 811 starts and drives the first rotating rod 812 to rotate through the coupling. The first rotating rod 812 drives the connecting plate 813 and the fixed rod 814 to perform circular motion. The fixed rod 814 slides in the connecting hole 817 of the arc plate 816, driving the arc plate 816 and the second rotating rod 815 to swing back and forth within a certain angle range. The second rotating rod 815 is fixedly connected to the spray nozzle 7, so the spray nozzle 7 swings synchronously with the second rotating rod 815, dissolving the dilute acid solution. The liquid is sprayed evenly into the leak area in the form of a mist. The dilute acid solution comes into full contact with the ammonia in the air and undergoes a neutralization reaction to generate harmless or low-harm salts, effectively reducing the concentration of ammonia and minimizing irritation to the human body and corrosion to equipment. The sprayed absorbent liquid flows back into the liquid tank 4 under gravity, forming a cycle for reuse. During the operation of the swing mechanism 8, the contact rod 917 at the bottom of the arc plate 816 periodically presses down on the T-shaped plate 916, causing the sieve plate 914 to vibrate up and down, forming an automatic sieve cleaning effect. The sieve plate 914 filters the returned absorbent liquid, removing any solid impurities that may be mixed in, preventing impurities from entering the spray system and causing blockage of the spray pipe 7 or pipeline, thus ensuring the long-term stable operation of the system.

[0024] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A protective device for an air separation liquid ammonia pump, comprising a base (1), characterized in that: The base (1) is fixedly connected to a placement rack (2), and a liquid ammonia pump (3) is installed on the top of the placement rack (2). A liquid tank (4) is connected to the bottom of the base (1). A vertical plate (5) is fixedly connected to the top of the base (1). A first delivery pipe (6) is connected to the right side of the liquid tank (4). A spray pipe (7) is rotatably connected to the left side of the first delivery pipe (6). The first delivery pipe (6) and the spray pipe (7) are connected.

2. The protective device for an air separation liquid ammonia pump according to claim 1, characterized in that, A swing mechanism (8) is provided on the left side of the vertical plate (5). The swing mechanism (8) includes a motor (811). The motor (811) is fixedly connected to the right side of the vertical plate (5). The output end of the motor (811) is fixedly connected to a first rotating rod (812) through a coupling. The first rotating rod (812) moves through the vertical plate (5) and extends to its left side.

3. The protective device for an air separation liquid ammonia pump according to claim 2, characterized in that, A connecting plate (813) is fixedly connected to the left side of the first rotating rod (812), and a fixing rod (814) is fixedly connected to the left side of the connecting plate (813).

4. A protective device for an air separation liquid ammonia pump according to claim 3, characterized in that, The vertical plate (5) has a second rotating rod (815) that moves through its interior and extends to its left and right sides. The second rotating rod (815) is fixedly connected to the nozzle (7). An arc plate (816) is fixedly connected to the left side of the second rotating rod (815). A connecting hole (817) is provided inside the arc plate (816). The connecting hole (817) is sleeved on the outer wall of the fixed rod (814).

5. A protective device for an air separation liquid ammonia pump according to claim 4, characterized in that, The liquid tank (4) is provided with a screening mechanism (9), which includes a chute (911). The chute (911) is opened on the inner wall of the liquid tank (4). A slider (912) is slidably connected inside the chute (911). A spring (913) is fixedly connected between the slider (912) and the inner wall of the chute (911).

6. A protective device for an air separation liquid ammonia pump according to claim 5, characterized in that, A sieve plate (914) is fixedly connected to the left side of the slider (912), and a vertical hole (915) is opened on the left side of the liquid tank (4). A T-shaped plate (916) is fixedly connected to the left side of the sieve plate (914), and the T-shaped plate (916) extends to the left through the vertical hole (915).

7. A protective device for an air separation liquid ammonia pump according to claim 6, characterized in that, The bottom of the arc-shaped plate (816) is fixedly connected to an abutment rod (917), and the abutment rod (917) is set on the top of the T-shaped plate (916).

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