A protection device for an ammonia water storage tank

Abstract

The utility model discloses a protection device for ammonia water storage tank, including the jar body, the inside of jar body is equipped with the partition, and the both sides of partition are equipped with first chamber and second chamber respectively, and the second chamber is stored with absorption liquid, and the communication conduit is equipped between second chamber and first chamber, and one end of communication conduit is below the liquid level of absorption liquid, jar body is equipped with air inlet, air outlet and air inlet, and one end of air inlet is used for communicating with ammonia water storage tank, and the other end of air inlet communicates with first chamber, air outlet communicates with second chamber, and one end of air outlet is above the liquid level of absorption liquid, air inlet communicates with first chamber, and air inlet is equipped with one -way air inlet valve. The protection device can make different working state adjustment when ammonia water storage tank changes (high pressure exhaust, low pressure air intake) of outside environment, and the inside pressure of ammonia water storage tank is balanced, and makes ammonia gas be absorbed by absorption liquid, thereby preventing the harm that ammonia gas leaks brings.

Description

Technical Field

[0001] This utility model belongs to the field of silicon solar energy manufacturing technology, specifically relating to a protective device for ammonia storage tanks. Background Technology

[0002] Ammonia has a wide range of applications in the photovoltaic solar energy field, including: Cleaning silicon wafers: In the photovoltaic cell manufacturing process, ammonia is commonly used to clean silicon wafers. Ammonia cleaning effectively removes grease and organic matter from the silicon wafer surface, improving the cleanliness and surface quality of the wafers, thereby improving the cell's conversion efficiency; Removing metal impurities: In photovoltaic cell manufacturing, ammonia can also be used to remove metal impurities from the silicon wafer surface. Through chemical reactions, ammonia can combine with metal ions to form soluble metal-ammonia complexes, which are then removed through cleaning, reducing their adverse effects on cell performance; Preparing silicon nitride thin films: In the manufacturing process of crystalline silicon solar cells, ammonia is an important nitrogen source for preparing silicon nitride thin films. The quality of the silicon nitride thin film directly affects the performance of the solar cell. Ammonia participates in the synthesis of silicon nitride through chemical reactions, improving the photoelectric conversion efficiency and stability of the cell; Etching processes: Ammonia also plays an important role in the etching process of photovoltaic cells. Through etching technology, specific areas on the silicon wafer surface can be precisely removed to form the desired circuit patterns. Ammonia, as part of the etching solution, helps achieve high-precision pattern processing in this process. ‌

[0003] Ammonia water is typically stored in ammonia water storage tanks. During storage and use, ammonia gas is volatile, and the internal pressure of the storage tank inevitably changes rapidly due to external temperature fluctuations and the rapid extraction of ammonia water, affecting the normal operation of external equipment. Therefore, protective devices are needed for ammonia water storage tanks. Utility Model Content

[0004] The purpose of this invention is to provide a protective device for ammonia storage tanks to solve the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for an ammonia storage tank, comprising a tank body, wherein a partition plate is provided inside the tank body, and a first chamber and a second chamber are respectively provided on both sides of the partition plate. The second chamber stores an absorbent liquid for absorbing ammonia gas, and a connecting conduit is provided between the second chamber and the first chamber, one end of the connecting conduit extending below the surface of the absorbent liquid; the tank body is provided with an air inlet, an air outlet, and an air intake port, one end of the air inlet being connected to the ammonia storage tank, and the other end of the air inlet being connected to the first chamber; the air outlet being connected to the second chamber, and one end of the air outlet being located above the surface of the absorbent liquid; the air intake port being connected to the first chamber, and the air intake port is provided with a one-way air intake valve.

[0006] As an optional implementation of the above technical solution, the first chamber contains a purification liquid, one end of the air inlet extends below the surface of the purification liquid, and one end of the air outlet is located above the surface of the purification liquid.

[0007] As an optional implementation of the above technical solution, the connecting conduit is inserted through the partition plate, and one end of the connecting conduit extends above the surface of the purified liquid.

[0008] As an optional implementation of the above technical solution, the purification liquid is pure water.

[0009] As an optional implementation of the above technical solution, the absorbent is an acidic liquid.

[0010] As an optional embodiment of the above technical solution, the acidic liquid is filled with irregular filler.

[0011] As an optional implementation of the above technical solution, the tank is provided with a liquid replenishment port, which is connected to the first chamber.

[0012] As an optional implementation of the above technical solution, the tank body is provided with an air vent, which is connected to the first chamber.

[0013] As an optional implementation of the above technical solution, the tank body is provided with an overflow port, which is connected to the second chamber, and the height of the overflow port is lower than the height of the air outlet.

[0014] As an optional implementation of the above technical solution, the tank body is provided with a drain port, which is connected to the second chamber.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention provides a protective device for an ammonia storage tank. When ammonia evaporates and produces ammonia gas due to high external temperatures, the tank can promptly absorb the ammonia gas, maintaining a stable pressure within the tank. When ammonia is rapidly pumped out or affected by low external temperatures, the device can promptly replenish the air inside the tank, preventing negative pressure and ensuring stable operation. This protective device can adjust its operating state according to changes in the external environment (high-pressure venting, low-pressure intake), balancing the internal pressure of the ammonia storage tank and ensuring that the ammonia gas is absorbed by the absorbent liquid, thereby preventing the hazards caused by ammonia leakage. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0018] In the diagram: 1-Tank body; 2-Break plate; 3-First chamber; 4-Second chamber; 5-Connecting conduit; 6-Air inlet; 7-Air outlet; 8-Air suction port; 9-Liquid replenishment port; 10-Drain port; 11-Overflow port; 12-Sewage outlet. Detailed Implementation

[0019] like Figure 1 As shown, this embodiment provides a protective device for an ammonia storage tank, including a tank body 1. A partition plate 2 is provided inside the tank body 1, and a first chamber 3 and a second chamber 4, which are independent of each other, are respectively provided on both sides of the partition plate 2. The partition plate 2 is horizontally arranged inside the tank body 1, dividing the interior of the tank body 1 into two chambers. The space at the top of the partition plate 2 is the first chamber 3, and the space at the bottom of the partition plate 2 is the second chamber 4. The first chamber 3 and the second chamber 4 are independent of each other.

[0020] The second chamber 4 stores an absorbent liquid for absorbing ammonia gas. The absorbent liquid is preferably an acidic liquid, which neutralizes the ammonia gas, thus achieving ammonia absorption. The acidic liquid is filled with irregular filler material to increase the contact area between the acidic liquid and the ammonia gas. The irregular filler material is made of irregular stainless steel scraps, which helps to increase the contact area and improve the ammonia absorption effect. A connecting conduit 5 is provided between the second chamber 4 and the first chamber 3, with one end extending below the surface of the absorbent liquid. The connecting conduit 5 is used to introduce the ammonia gas from the first chamber 3 into the acidic liquid in the second chamber 4, allowing the ammonia gas to be absorbed by the acidic liquid and preventing air pollution.

[0021] like Figure 1 As shown, tank 1 is equipped with an inlet 6, an outlet 7, and a suction port 8. One end of the inlet 6 is connected to the ammonia storage tank, and the other end is connected to the first chamber 3. Ammonia gas in the ammonia storage tank can enter the first chamber 3 through the inlet 6, and then enter the acidic liquid in the second chamber 4 through the connecting conduit 5. The outlet 7 is connected to the second chamber 4, and one end of the outlet 7 is located above the liquid surface of the absorbent. The outlet 7 is used to discharge gas from the second chamber 4. If the acidic liquid absorbs ammonia gas to saturation, the excess ammonia gas is discharged through the outlet 7. The suction port 8 is connected to the first chamber 3 and is equipped with a one-way inlet valve. The one-way inlet valve allows external gas to enter the first chamber 3, and then enter the ammonia storage tank through the inlet 6, so as to balance the internal pressure of the ammonia storage tank.

[0022] This invention provides a protective device for an ammonia storage tank. When ammonia evaporates and produces ammonia gas due to high external temperatures, the tank body 1 can promptly absorb the ammonia gas, maintaining a stable pressure within the tank. When ammonia is rapidly pumped out or affected by low external temperatures, the device can promptly replenish the air inside the tank, preventing negative pressure and ensuring stable operation. This protective device can adjust its operating state according to changes in the external environment (high-pressure venting, low-pressure intake), allowing the ammonia gas to be absorbed by the absorbent liquid, thereby preventing the hazards caused by ammonia leakage.

[0023] To prevent impurities in the air from entering the ammonia storage tank, the first chamber 3 contains a purification liquid, typically pure water. One end of the suction port 8 extends below the surface of the purification liquid, while one end of the inlet port 6 is positioned above the surface of the purification liquid. External gas enters the purification liquid through the suction port 8, is purified by the purification liquid, and then enters the ammonia storage tank through the inlet port 6. It should be noted that the purification liquid in tank 1 can both trap impurities in the air and preliminarily absorb ammonia gas.

[0024] As an optional implementation, the connecting conduit 5 is inserted through the partition plate 2, with one end of the connecting conduit 5 extending above the surface of the purification liquid and the other end extending below the surface of the absorption liquid.

[0025] like Figure 1 As shown, in this embodiment, the tank 1 is provided with a liquid replenishment port 9, which is connected to the first chamber 3. The tank 1 is provided with a vent port 10, which is connected to the first chamber 3. The tank 1 is provided with an overflow port 11, which is connected to the second chamber 4, and the height of the overflow port 11 is lower than the height of the vent port 7. The tank 1 is provided with a drain port 12, which is connected to the second chamber 4.

[0026] The functions of each port on tank 1 are as follows:

[0027] (1) Air inlet 6 is used to connect the ammonia storage tank and the tank body 1. Ammonia gas from the ammonia storage tank enters the tank body 1 through this inlet, and air in the tank body 1 also enters the ammonia storage tank through this inlet.

[0028] (2) Outlet 7: After the ammonia is absorbed by the acidic liquid in the tank 1, the excess gas is discharged into the air through this outlet.

[0029] (3) Liquid replenishment port 9, which serves as the replenishment port for the purified liquid in tank 1;

[0030] (4) Drain 12: When the absorbent in tank 1 is completely neutralized with ammonia, the absorbent is drained through this drain.

[0031] (5) Overflow port 11, when the absorbent liquid reaches a certain height, it overflows from this port, and at the same time, this port is also the replenishment port for the absorbent liquid;

[0032] (6) Air intake 8: When the pressure inside the ammonia storage tank decreases, air from the atmosphere enters the tank body 1 through this port and then enters the ammonia storage tank through the air inlet 6.

[0033] (7) Drain 10, through which the purified liquid in tank 1 is discharged.

[0034] In normal operation, the protective device of this utility model connects the air inlet 6 to the air outlet 7 of the ammonia storage tank. When the ammonia in the ammonia storage tank evaporates due to the influence of high external temperature, it can promptly receive the ammonia discharged from the ammonia storage tank. The ammonia first enters the first chamber 3, and then enters the second chamber 4 through the connecting pipe 5, where it comes into contact with the acidic liquid at the bottom, undergoes a neutralization reaction, and absorbs the ammonia. The acidic liquid contains irregular stainless steel filings, which increases the contact area between the acidic liquid and the ammonia. Excess gas is discharged from the air outlet 7. In addition, when the liquid in the ammonia storage tank is pumped out in a short time or affected by the low external temperature, a negative pressure will be generated in the ammonia storage tank. At this time, it is necessary to replenish the gas to maintain the pressure inside the tank in balance with the atmospheric pressure. The one-way air inlet valve installed on the air inlet 8 automatically opens, drawing the gas in the air into the first chamber 3. After the gas in the air passes through the purification liquid in the first chamber 3 to remove dust and other impurities, it then enters the ammonia storage tank in reverse through the air inlet 6 to balance the internal pressure of the ammonia storage tank. This protective device can adjust its working state differently when the ammonia storage tank is affected by changes in the external environment (high-pressure venting, low-pressure intake), balance the internal pressure of the ammonia storage tank, and allow the ammonia gas to be absorbed by the acidic liquid through a neutralization reaction, thereby preventing the hazards caused by ammonia gas leakage.

[0035] In this description of the utility model, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. They can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model. Furthermore, the specific features and structures described in the embodiments are included in at least one implementation method. Those skilled in the art can combine features from different implementation methods without contradiction. The scope of protection of this utility model is not limited to the specific implementation methods described above. Based on the basic technical concept of this utility model, implementation methods that can be conceived by those skilled in the art without creative effort are all within the scope of protection of this utility model.

Claims

1. A protective device for an ammonia storage tank, comprising a tank body (1), characterized in that, The tank (1) is provided with a partition plate (2) inside. The partition plate (2) has a first chamber (3) and a second chamber (4) on its two sides respectively. The second chamber (4) stores an absorbent liquid for absorbing ammonia. A connecting pipe (5) is provided between the second chamber (4) and the first chamber (3). One end of the connecting pipe (5) extends below the surface of the absorbent liquid. The tank (1) is provided with an air inlet (6), an air outlet (7) and an air intake (8). One end of the air inlet (6) is used to connect with the ammonia storage tank, and the other end of the air inlet (6) is connected with the first chamber (3). The air outlet (7) is connected with the second chamber (4), and one end of the air outlet (7) is located above the surface of the absorbent liquid. The air intake (8) is connected with the first chamber (3), and the air intake (8) is provided with a one-way air intake valve.

2. The protective device for ammonia storage tank according to claim 1, characterized in that, The first chamber (3) contains a purification liquid. One end of the air inlet (8) extends below the surface of the purification liquid, and one end of the air inlet (6) is located above the surface of the purification liquid.

3. The protective device for ammonia storage tank according to claim 2, characterized in that, The connecting conduit (5) is inserted through the partition plate (2), and one end of the connecting conduit (5) extends above the surface of the purified liquid.

4. The protective device for ammonia storage tank according to claim 2, characterized in that, The purification solution is pure water.

5. The protective device for ammonia storage tank according to claim 1, characterized in that, The absorbent is an acidic liquid.

6. The protective device for ammonia storage tank according to claim 5, characterized in that, The acidic liquid is filled with irregular filler.

7. The protective device for ammonia storage tank according to claim 1, characterized in that, The tank (1) is provided with a liquid replenishment port (9), which is connected to the first chamber (3).

8. The protective device for ammonia storage tank according to claim 1, characterized in that, The tank (1) is provided with an air vent (10), which is connected to the first chamber (3).

9. The protective device for ammonia storage tank according to claim 1, characterized in that, The tank (1) is provided with an overflow port (11), which is connected to the second chamber (4). The height of the overflow port (11) is lower than the height of the air outlet (7).

10. The protective device for ammonia storage tank according to claim 1, characterized in that, The tank (1) is provided with a drain port (12), which is connected to the second chamber (4).

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