Storage tank pressure conveying device

Abstract

The utility model relates to a storage tank pressure conveying device which comprises a feeding tower, a tank A and a tank B. A feeding pipe is connected between the feeding tower and the tank A, a conveying pipe is connected between the bottom of the tank A and the top of the tank B, and the upper portion of the tank A is connected with a high-pressure gas pipe used for introducing high-pressure inert gas. The storage tank pressure conveying device is novel in structure, reasonable in design, high in practicability, safe and reliable, liquid media are conveyed through the pressure of high-pressure inert gas, and the possibility that flammable, explosive and highly toxic liquid is dangerous when conveyed through a pump is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical equipment, in particular to a storage tank pressure conveying device. BACKGROUND

[0002] At present, the conveying method of liquid medium mainly utilizes a pump, the pump transmits mechanical energy or other external energy of a prime mover to liquid, so that the energy of the liquid is increased to achieve the method of conveying liquid. The pump also needs to be maintained and repaired in the use process, resulting in that the material needs to be paused in conveying.

[0003] At the same time, when facing flammable and explosive or toxic liquid, the pump generates heat when working, and safety risks are prone to occur when conveying flammable and explosive liquid; at the same time, when conveying toxic liquid, if the sealing property of the pump has a problem, the toxic liquid is prone to leak, and in the process of disassembling the pump, toxic or flammable and explosive liquid leakage and other conditions may also occur. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a storage tank pressure conveying device which is practical, safe and reliable, and solves the possibility of danger of flammable and explosive or toxic liquid when conveyed by a pump.

[0005] The utility model adopts the following scheme: a storage tank pressure conveying device, including incoming material tower, A jar and B jar, the incoming material pipe is connected between the incoming material tower and A jar, the conveying pipe is connected between the bottom of A jar and the top of B jar, the high pressure gas pipe for high pressure inert gas is connected to the upper portion of A jar.

[0006] Further, the first valve is arranged on the conveying pipe.

[0007] Further, the bypass pipe is connected in parallel at the positions of the two ends of the first valve on the conveying pipe, the delivery pump is arranged on the bypass pipe, and the second valve and the third valve are arranged on the bypass pipe at the two ends of the delivery pump.

[0008] Further, the high pressure gas tank and the low pressure gas tank are further included, the high pressure gas pipe is connected with the high pressure gas tank, the high pressure gas tank and the low pressure gas tank are connected through the gas supply pipe, the gas pump is arranged on the gas supply pipe, and the reflux pipe is connected between the upper portion of A jar and the low pressure gas tank.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the storage tank pressure conveying device of the utility model has novel structure, reasonable design, strong practicability, safety and reliability, and can convey liquid medium by using the pressure of high pressure inert gas, so that the possibility of danger of flammable and explosive or toxic liquid when conveyed by a pump is solved.

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0013] The following are the labels in the diagram: 100 - Feeding tower, 200 - Tank A, 300 - Tank B, 400 - Conveying pipe, 500 - High-pressure gas pipe, 600 - Bypass pipe, 610 - Conveying pump, 700 - High-pressure gas storage tank, 800 - Low-pressure gas storage tank, 900 - Gas pump. Detailed Implementation

[0014] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Example 1: As Figure 1 As shown, a storage tank pressure conveying device includes a feeding tower 100, tank A 200, and tank B 300. A feeding pipe connects the feeding tower 100 and tank A 200. A conveying pipe 400 connects the bottom of tank A and the top of tank B. A high-pressure gas pipe 500 for introducing high-pressure inert gas is connected to the upper part of tank A. A fourth valve is provided on the high-pressure gas pipe 500. This utility model utilizes gas pressure to convey liquid media. The liquid media in the feeding tower 100 enters tank A by gravity, and the high-pressure gas pipe 500 introduces high pressure into tank A, thus solving the potential danger of flammable, explosive, and highly toxic liquids being conveyed by a pump.

[0017] In this embodiment, the gas in the high-pressure gas pipe 500 can be an inert gas such as helium, nitrogen, or argon. Its purity can be appropriately selected at the 3-7N level depending on the material. The pressure of the inert gas can be 0.1-5 MPa. The high-pressure gas pipe can be connected to a gas storage tank or it can be a pipeline led out from a utility project.

[0018] In this embodiment, a pressure gauge is provided on the top of tank A and connected to a pressure relief pipe, and a pressure relief valve is provided on the pressure relief pipe.

[0019] In this embodiment, a first valve is provided on the delivery pipe 400.

[0020] In this embodiment, a bypass pipe 600 is connected in parallel to both ends of the first valve on the delivery pipe. A delivery pump 610 is installed on the bypass pipe, and a second valve and a third valve are installed at both ends of the delivery pump. By adding the bypass pipe and the delivery pump, both pumping and pressure delivery modes are achieved. The corresponding delivery mode can be selected according to the characteristics of the liquid medium. When delivering ordinary liquid media, the delivery pump can be selected for delivery, which is more efficient and faster. Furthermore, when the delivery pump is being maintained or repaired, it can be switched to pressure delivery, reducing the downtime of the pump during maintenance and repair. When delivering flammable, explosive, or highly toxic liquids, pressure delivery can be selected for greater safety and reliability.

[0021] Specific work process:

[0022] 1. Liquid materials enter tank A from the feed tower. Under normal operating conditions, the materials are transported to tank B by the transfer pump.

[0023] 2. If the pump malfunctions, the valves before and after the pump can be disconnected for easier maintenance.

[0024] 3. At this point, the inert gas in the upper layer of tank A, preferably nitrogen, can be used to increase the pressure of nitrogen in tank A to 2MPa by controlling the opening of the fourth valve, so that the liquid stored in tank A can be transported to tank B under pressure.

[0025] 4. After the delivery is completed, the nitrogen in tank A can be depressurized through the pressure relief valve.

[0026] Example 2: Figure 2 As shown, the difference between this embodiment and Embodiment 1 lies in the different supply method of the high-pressure inert gas. In this embodiment, a high-pressure gas storage tank 700 and a low-pressure gas storage tank 800 are also included. The high-pressure gas pipe is connected to the high-pressure gas storage tank, and the high-pressure gas storage tank and the low-pressure gas storage tank are connected through a gas supply pipe. A gas pump is provided on the gas supply pipe. A return pipe is connected between the upper part of the A tank and the low-pressure gas storage tank, and a fifth valve is provided on the return pipe.

[0027] Specific work process:

[0028] 1. Liquid material enters tank A from the feed tower. When liquid is being transported, the opening of the fourth valve on the high-pressure gas pipe 500 is controlled to introduce high-pressure inert gas, preferably nitrogen, into tank A from the high-pressure gas storage tank. This increases the pressure of the nitrogen in the upper layer of tank A to 2 MPa, and the liquid stored in tank A is then transported to tank B under pressure.

[0029] 2. When the delivery is completed, the nitrogen gas on the upper layer of the A tank can be discharged to the low-pressure gas storage tank through the reflux pipe.

[0030] Any of the above technical solutions of the utility model discloses, if it discloses numerical range except another declaration, then the numerical range disclosed is preferred numerical range, and any person skilled in the art should understand that: preferred numerical range is only the numerical value of obvious technical effect or representative numerical value among many implementable numerical values. Because there are many values, it is impossible to enumerate, therefore, the utility model discloses partial numerical value to illustrate the technical scheme of the utility model, and the above enumerated numerical value should not constitute the restriction of the protection scope of the utility model.

[0031] If the utility model discloses or involves mutually fixed connecting parts or structural members, then, except another declaration, fixed connection can be understood as: detachable fixed connection (for example, bolt or screw connection), and can also be understood as: non-detachable fixed connection (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by integral structure (for example, integrally formed by using casting process) (except obviously cannot adopt integral forming process).

[0032] In addition, the terms used to represent the position relationship or shape in any of the above technical solutions of the utility model disclose, except another declaration, the meaning includes the state or shape similar, analogous or close to it.

[0033] Any component provided by the utility model can be assembled by a plurality of individual components, or can be an individual component manufactured by integral forming process.

[0034] The above is only the preferred embodiment of the utility model, and does not limit other forms of the utility model, and any person skilled in the art can change or modify the equivalent embodiment of equivalent change by using the disclosed technical content. However, any simple modification, equivalent change and modification of the above embodiment without departing from the technical scheme content of the utility model, according to the technical essence of the utility model, still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A tank pressure conveying device comprising a raw material tower, an A tank and a B tank, a raw material pipe being connected between the raw material tower and the A tank, characterized in that: The A tank bottom and B tank top are connected with a conveying pipe, and the upper part of the A tank is connected with a high-pressure gas pipe for introducing high-pressure inert gas.

2. The tank pressure delivery apparatus according to claim 1, characterized by: The conveying pipe is provided with a first valve.

3. The tank pressure delivery apparatus of claim 2, wherein: The conveying pipe is provided with a bypass pipe connected in parallel at positions on both sides of the first valve, the bypass pipe is provided with a conveying pump, and the bypass pipe is provided with a second valve and a third valve at positions on both sides of the conveying pump.

4. The reservoir pressure delivery device of claim 1, wherein: The high-pressure gas pipe is connected with a high-pressure gas storage tank, the high-pressure gas storage tank and a low-pressure gas storage tank are connected through a gas supply pipe, the gas supply pipe is provided with a gas pump, and the upper part of the A tank is connected with a reflux pipe between the low-pressure gas storage tank.

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