Liquid seal device of material storage tank

Abstract

The utility model discloses a material storage tank liquid seal device which comprises a liquid seal tank, the liquid seal tank is of a hollow structure, a U-shaped liquid seal pipe and a dewatering material are arranged in the liquid seal tank, an opening a of the U-shaped liquid seal pipe is located in the liquid seal tank, an opening b of the U-shaped liquid seal pipe is connected with a material storage tank connecting pipeline, and an outlet of the material storage tank connecting pipeline is located outside the liquid seal tank. A breather pipe is arranged in the liquid seal tank, the air outlet end of the breather pipe is located at the bottom of the liquid seal tank, and the air inlet end of the breather pipe is located outside the liquid seal tank. A U-shaped liquid seal pipe liquid injection hole is further formed in the liquid seal tank, and the U-shaped liquid seal pipe liquid injection hole is formed over the opening a of the U-shaped liquid seal pipe. The material storage tank protection device is compact in structure, convenient to install, high in safety and capable of protecting the material storage tank from being damaged by overlarge pressure or negative pressure, and safety of the material storage tank can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to a liquid sealing device for a material storage tank, belonging to the technical field of chemical equipment. Background Art

[0002] In the chemical production process, material storage tanks are a common equipment. If the storage of materials needs to be isolated from water and oxygen, it is often necessary to equip a nitrogen sealing device to inject inert gas such as nitrogen for protection. At this time, the storage tank is in a slightly positive pressure state. Such a material storage tank is a slightly positive pressure container. When the material in the material storage tank is transported outward, the material level in the material storage tank drops, and the nitrogen sealing device will automatically add nitrogen to the material storage tank to maintain the pressure balance in the material storage tank; when the material is transported from the outside to the material storage tank, the material level in the material storage tank rises, and the gas in the material storage tank will be discharged through the breathing valve to maintain the pressure balance in the material storage tank. However, if the nitrogen sealing device or the breathing valve fails, or the material input or output is too fast, the input or output of the material will cause a higher positive or negative pressure to form in the material storage tank. When the positive or negative pressure in the material storage tank reaches a certain level (within the design safety value of the tank), it will be dangerous. Therefore, relevant industry standards require the use of a system that combines liquid sealing and gas sealing devices.

[0003] The liquid sealing devices currently on the market are often not compact enough in terms of structural design. They are basically designed with a U-shaped liquid sealing tube and a liquid sealing box as separate parts. The U-shaped liquid sealing tube is outside the liquid sealing box, which not only complicates the installation process but also makes the U-shaped liquid sealing tube easily bumped when exposed to the outside. At the same time, the overflow pipe is exposed to the outside. Once the liquid overflows, it will cause environmental pollution or human harm.

[0004] Therefore, it is very practical and economical to study a liquid sealing device for material storage tanks that has a compact structure, is easy to install, and has high safety. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned prior art, the utility model provides a liquid sealing device for a material storage tank, which has a compact structure, is easy to install, and has high safety. It can protect the material storage tank from being damaged due to excessive pressure or negative pressure, and can effectively ensure the safety of the material storage tank.

[0006] The specific technical solution of the utility model is as follows:

[0007] A material storage tank liquid sealing device, the liquid sealing device comprises a liquid sealing tank, the liquid sealing tank is a hollow structure, a U-shaped liquid sealing pipe and dewatering material are arranged in the liquid sealing tank, the opening a of the U-shaped liquid sealing pipe is located in the liquid sealing tank, the opening b is connected to the material storage tank connecting pipeline, and the outlet of the material storage tank connecting pipeline is located outside the liquid sealing tank; a vent pipe is arranged in the liquid sealing tank, the air outlet end of the vent pipe is located at the bottom of the liquid sealing tank, and the air inlet end of the vent pipe is located outside the liquid sealing tank; a U-shaped liquid sealing pipe injection hole is also arranged on the liquid sealing tank, and the U-shaped liquid sealing pipe injection hole is arranged directly above the opening a of the U-shaped liquid sealing pipe.

[0008] Furthermore, the U-shaped liquid sealing tube is fixed inside the liquid sealing tank by a U-shaped liquid sealing tube fixing bracket.

[0009] Furthermore, a U-shaped liquid seal tube connected to a liquid level gauge is provided outside the liquid seal tank for observing the liquid level in the U-shaped liquid seal tube.

[0010] Furthermore, the U-shaped liquid sealing tube is vertically arranged in the liquid sealing tank.

[0011] Furthermore, a single call valve is provided on the liquid injection hole of the U-shaped liquid seal tube.

[0012] Furthermore, the dehydrating material is a solid dehydrating material or a liquid dehydrating material. When the dehydrating material is a liquid, a liquid sealing tank communicating liquid level gauge may be provided outside the liquid sealing tank for observing the liquid level in the liquid sealing tank.

[0013] Furthermore, the material storage tank connecting pipeline is connected to the material storage tank.

[0014] The utility model provides a novel liquid sealing device for material storage tanks, which has the following beneficial effects compared with the prior art:

[0015] 1. The main components of the device are all inside the liquid seal tank, with compact structure, easy installation and high safety. It can protect the material storage tank from damage due to excessive pressure or negative pressure, and can effectively ensure the safety of the material storage tank.

[0016] 2. The U-shaped liquid seal tube of the device is placed inside the liquid seal tank and fixed with a U-shaped liquid seal tube fixing bracket to prevent the U-shaped liquid seal tube from being bumped.

[0017] 3. The U-shaped liquid seal pipe opening of the device is placed inside the liquid seal tank, which can prevent the material storage tank from sucking in a large amount of water-containing air when it is under negative pressure, and can also prevent the liquid from overflowing to the outside when the material storage tank is under positive pressure, causing environmental pollution or human harm.

[0018] 4. The ventilation pipe of the device is located at the bottom of the liquid seal tank and can be extended into the solid or liquid material to be dehydrated to ensure that water vapor is removed when air enters the liquid seal tank through the ventilation pipe. When negative pressure appears in the material storage tank, the gas entering the material storage tank through the liquid seal device does not contain water, which can effectively prevent water from entering the material storage tank. When the material storage tank stores materials that react violently when exposed to water, the utility model has better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a liquid sealing device for a material storage tank of the utility model.

[0020] In the figure: 1-liquid seal tank, 2-U-type liquid seal pipe connected to liquid level gauge, 3-ventilation pipe, 4-U-type liquid seal pipe, 5-U-type liquid seal pipe injection hole, 6-material storage tank connecting pipeline, 7-U-type liquid seal pipe fixing bracket, 8-liquid seal tank connected to liquid level gauge, 9-water removal material, 10-U-type liquid seal pipe opening a. DETAILED DESCRIPTION

[0021] The following will be combined with the specific embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] The material storage tank liquid sealing device of the utility model is used for liquid sealing of the material storage tank, and is used in combination with the gas sealing device to ensure the safety of the material storage tank.

[0024] like Figure 1 As shown, the material storage tank liquid sealing device of the utility model comprises: a liquid sealing tank 1, the liquid sealing tank comprises a shell, the inside of the shell is a hollow structure, and there is no special requirement for the shape of the liquid sealing tank, for example, it can be a cube, a rectangular parallelepiped, a cylinder, etc. A U-shaped liquid sealing tube 4 is arranged vertically in the liquid sealing tank, and is firmly fixed in the liquid sealing tank by a U-shaped liquid sealing tube fixing bracket 7, one end of the fixing bracket is fixed on the liquid sealing tank, and the other end is fixed to the U-shaped liquid sealing tube, and there is no special requirement for the shape and structure of the fixing bracket, and any structure reported in the prior art that can achieve this function can be used. The U-shaped liquid sealing tube is U-shaped, and encapsulated liquid is contained therein. The U-shaped liquid sealing tube has two openings, wherein the opening a10 is located in the liquid sealing tank, and the opening b is connected to the material storage tank connecting pipeline 6, and the material storage tank connecting pipeline is arranged horizontally, and its outlet is located outside the liquid sealing tank, and is used to connect with the material storage tank.

[0025] Further, a dehydrating material 9 is also provided in the liquid-sealed tank, and the dehydrating material can be solid or liquid. The solid dehydrating material can be selected from calcium chloride, etc., and the liquid dehydrating material can be selected from concentrated sulfuric acid, etc. A vent pipe 3 is also provided in the liquid-sealed tank, the air inlet end of the vent pipe is located outside the liquid-sealed tank, the air outlet end of the vent pipe is located at the bottom of the liquid-sealed tank, and the air outlet end extends into the dehydrating material. The vent pipe can be in various shapes, such as "L-shaped". Through the combination of the vent pipe and the dehydrating material, the air entering the liquid-sealed tank through the vent pipe is first dehydrated by the dehydrating material, thereby preventing water vapor from entering the material storage tank.

[0026] Furthermore, the liquid seal tank is also provided with a U-shaped liquid seal pipe injection hole 5, which is used to inject liquid into the U-shaped liquid seal pipe. In order to facilitate the injection, the U-shaped liquid seal pipe injection hole is arranged just above the opening a of the U-shaped liquid seal pipe. The U-shaped liquid seal pipe injection hole is equipped with a single call valve, which is closed by the single call valve after the liquid is injected.

[0027] Furthermore, a U-shaped liquid-sealing tube communicating liquid level gauge 2 may be provided outside the liquid-sealing tank for observing the liquid level in the U-shaped liquid-sealing tube. The U-shaped liquid-sealing tube communicating liquid level gauge is connected to the bottom of the U-shaped liquid-sealing tube.

[0028] Furthermore, when the dewatering material is liquid, a liquid seal tank communicating level gauge 8 may be provided outside the liquid seal tank for observing the liquid level in the liquid seal tank. When a solid dewatering material is used, the liquid seal tank communicating level gauge may not be used.

[0029] When the utility model is used in conjunction with a gas sealing device, when the material storage tank receives material, the liquid level of the material storage tank rises, and the excess gas squeezed in the material storage tank is discharged through the breathing valve. When the material in the material storage tank is transported outward, the material level in the material storage tank drops, and nitrogen is automatically added to the material storage tank through the nitrogen sealing valve to maintain the pressure balance in the material storage tank. If the nitrogen sealing device or the breathing valve fails or the material storage tank is added or discharged too quickly, the gas in the material storage tank cannot be discharged in time or nitrogen cannot be added in time, a positive pressure or negative pressure exceeding the design safety value of the storage tank will be formed in the material storage tank. When a positive pressure exceeding the designed safety value of the storage tank is formed in the material storage tank, the gas in the material storage tank will be transmitted to the U-shaped liquid-sealed tube 4 through the material storage tank connecting pipeline 6, the liquid seal of the U-shaped liquid-sealed tube 4 will be destroyed, and the liquid in the U-shaped liquid-sealed tube will be pressed into the liquid-sealed tank 1, and the excess gas will be discharged through the single call valve equipped with the injection hole 5 of the U-shaped liquid-sealed tube, thereby protecting the material storage tank from being damaged by excessive positive pressure; when a negative pressure exceeding the designed safety value of the storage tank is formed in the material storage tank, the negative pressure will be transmitted to the U-shaped liquid-sealed tube 4 through the material storage tank connecting pipeline 6, the liquid seal of the U-shaped liquid-sealed tube 4 will be destroyed, and the liquid in the U-shaped liquid-sealed tube 4 will be sucked into the material storage tank, and then more gas will enter the liquid-sealed tank 1 through the vent pipe 3 and the dehydration material in the liquid-sealed tank 1, and then enter the material storage tank through the U-shaped liquid-sealed tube 4 and the material storage tank connecting pipeline 6, thereby protecting the material storage tank from being damaged by excessive negative pressure. A U-shaped liquid seal pipe is arranged on one side of the liquid seal tank 1 to connect with the liquid level gauge 2 so as to observe the liquid seal condition at any time.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technical personnel in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid sealing device for a material storage tank, characterized by: It includes a liquid-sealed tank, which is a hollow structure. A U-shaped liquid-sealed pipe and dewatering materials are arranged in the liquid-sealed tank. The opening a of the U-shaped liquid-sealed pipe is located in the liquid-sealed tank, and the opening b is connected to the material storage tank connecting pipeline. The outlet of the material storage tank connecting pipeline is located outside the liquid-sealed tank; a vent pipe is arranged in the liquid-sealed tank, the air outlet end of the vent pipe is located at the bottom of the liquid-sealed tank, and the air inlet end of the vent pipe is located outside the liquid-sealed tank; a U-shaped liquid-sealed pipe injection hole is also arranged on the liquid-sealed tank, and the U-shaped liquid-sealed pipe injection hole is arranged directly above the opening a of the U-shaped liquid-sealed pipe.

2. The liquid sealing device for a material storage tank according to claim 1 is characterized in that: The U-shaped liquid sealing pipe is fixed inside the liquid sealing tank through a U-shaped liquid sealing pipe fixing bracket.

3. The material storage tank liquid sealing device according to claim 1 is characterized in that: The outside of the liquid seal tank is provided with a U-shaped liquid seal tube connected to a liquid level gauge for observing the liquid level in the U-shaped liquid seal tube.

4. The liquid sealing device for a material storage tank according to claim 1, 2 or 3, characterized in that: The U-shaped liquid sealing pipe is vertically arranged in the liquid sealing tank.

5. The material storage tank liquid sealing device according to claim 1 is characterized in that: A single call valve is arranged on the liquid injection hole of the U-shaped liquid seal pipe.

6. The material storage tank liquid sealing device according to claim 1 is characterized in that: The dewatering material is solid or liquid.

7. The liquid sealing device for a material storage tank according to claim 6 is characterized in that: When the dewatering material is liquid, a liquid sealing tank communicating liquid level gauge is arranged outside the liquid sealing tank for observing the liquid level in the liquid sealing tank.

8. The material storage tank liquid sealing device according to claim 1 is characterized in that: The material storage tank connecting pipeline is connected to the material storage tank.

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