Novel pressure-bearing oil gas recovery structure

Abstract

The utility model discloses a novel pressure-bearing oil gas recovery structure which comprises a pneumatic ball valve, one end of the pneumatic ball valve is communicated with an air inlet pipe through a first flange, the other end of the pneumatic ball valve is communicated with an expansion joint through a second flange, and the other end of the expansion joint is communicated with an internal bent pipe through a third flange. And the bottom end of the internal bent pipe communicates with an oil gas recovery connector, the bottom end of the gas inlet pipe penetrates through the tank body and extends into the tank body, and the bottom end of the internal bent pipe penetrates through the tank body and extends out of the tank body. The pneumatic ball valve is additionally arranged, and due to the fact that the pneumatic ball valve is high in pressure bearing capacity, low in pressure needed for opening and higher in reliability, the structure can be suitable for the pressure tank. In the loading and unloading process, the pneumatic ball valve at the top is opened, and gas can be exchanged through the device, so that materials are not easy to store in the gas phase pipe, and medium pollution caused by the stored materials in the gas phase pipe is not easy to generate during mixed loading.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas recovery and treatment, and in particular to a novel pressure-bearing oil and gas recovery structure. Background Art

[0002] The function of the oil and gas recovery system of the oil tanker is to realize fully enclosed gas recovery during the loading and unloading process of the oil tanker, and to limit the emission of oil and gas into the atmosphere. That is, the oil pipeline and oil and gas recovery pipe between the oil tanker and the oil storage tank are connected to form a closed oil and gas recovery pipeline. While the oil tanker unloads oil through the oil unloading pipeline, the oil and gas in the oil tank of the gas station returns to the oil tanker through the return gas pipeline. The oil tanker brings the oil and gas back to the oil depot for processing to achieve the purpose of oil and gas recovery. When the oil is input, the volatility and evaporation of oil and gas will increase due to the fluctuation of the liquid level. Therefore, the oil filling pipe must be deep below the oil surface to reduce the disturbance of the liquid surface. The opening of the oil and gas recovery pipe is equipped with a special opening function device. When the oil and gas recovery pipeline of the tanker is correctly connected to the oil tank, the recovery port will be opened, and the exhaust pipe will be closed at the same time, so that the oil and gas in the oil tank can be completely returned to the tanker through the recovery port. In the liquid tanker industry, the loading and unloading of some media requires replacement operation, that is: the air in the tank must not be in direct contact with the outside world, exhaust is required during loading, and air intake is required during unloading. Gasoline and diesel belong to this type of medium, and they are normal pressure media; when considering that the tank body needs to be mixed with pressure media, the traditional oil and gas recovery valve cannot meet the requirements.

[0003] However, the above oil and gas recovery structure still has the following disadvantages:

[0004] The traditional oil and gas recovery valve has a low sealing pressure and is prone to leakage. When the pressure in the tank increases, the traditional oil and gas recovery valve is difficult to open, which is unreliable and cannot be used on pressure tanks. Utility Model Content

[0005] The utility model provides a novel oil and gas recovery structure capable of bearing pressure, which solves the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new type of pressurized oil and gas recovery structure, including a pneumatic ball valve, one end of the pneumatic ball valve is connected to an air inlet pipe through a first flange, the other end of the pneumatic ball valve is connected to an expansion joint through a second flange, the other end of the expansion joint is connected to an internal bend pipe through a third flange, and the bottom end of the internal bend pipe is connected to an oil and gas recovery joint.

[0007] Preferably, the bottom end of the air inlet pipe passes through the tank body and extends to the inside of the tank body, and the bottom end of the internal elbow passes through the tank body and extends to the outside of the tank body.

[0008] The beneficial effects of adopting the above technical solution are:

[0009] The utility model adds a pneumatic ball valve. Since the pneumatic ball valve has a high pressure bearing capacity, a low pressure required for opening, and higher reliability, this structure can be applied to pressure tanks. During the loading and unloading process, the pneumatic ball valve on the top is opened, and the gas can be ventilated through the device, so that it is not easy for material to accumulate in the gas phase pipe, and it is not easy to cause medium contamination caused by the accumulation of material in the gas phase pipe during mixed loading.

[0010] The utility model is not easy to store materials in the gas phase tube, and it is not easy to cause medium pollution caused by the materials stored in the gas phase tube during mixing; the utility model has strong sealing and pressure bearing capabilities, is safer and more reliable; and is pneumatically opened, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the pressurized oil and gas recovery structure provided by the utility model;

[0012] Figure 2 It is a schematic diagram of the external structure of the pneumatic ball valve of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the internal elbow of the utility model;

[0014] in:

[0015] 1. Pneumatic ball valve; 2. Air inlet pipe; 3. Expansion joint; 4. Internal elbow; 5. Oil and gas recovery joint. DETAILED DESCRIPTION

[0016] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0017] like Figures 1 to 3 As shown, the utility model is a new type of oil and gas recovery structure that can withstand pressure. It is not easy for materials to accumulate in the gas phase pipe, and it is not easy for medium pollution caused by the accumulation of gas phase pipe materials during mixing. It has strong sealing and pressure bearing capabilities, is safer and more reliable, and is pneumatically opened, making it more convenient to operate.

[0018] Specifically, Figures 1 to 3 As shown, it includes a pneumatic ball valve 1, one end of the pneumatic ball valve 1 is connected to an air inlet pipe 2 through a first flange, the other end of the pneumatic ball valve 1 is connected to an expansion joint 3 through a second flange, the other end of the expansion joint 3 is connected to an internal bend pipe 4 through a third flange, and the bottom end of the internal bend pipe 4 is connected to an oil and gas recovery joint 5.

[0019] The bottom end of the air inlet pipe 2 penetrates the tank body and extends to the inside of the tank body, and the bottom end of the internal elbow 4 penetrates the tank body and extends to the outside of the tank body.

[0020] The specific working method is described below with specific embodiments: Example 1

[0021] The pneumatic ball valve has a high pressure bearing capacity, low opening pressure and higher reliability, so this structure can be applied to pressure tanks; during the loading and unloading process, the pneumatic ball valve on the top is open, and the gas can be ventilated through the device, making it difficult for material to accumulate in the gas phase pipe, and it is not easy to cause medium contamination due to the storage of material in the gas phase pipe during mixed loading.

[0022] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above-mentioned concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A novel pressure-bearing oil and gas recovery structure, comprising a pneumatic ball valve (1), characterized in that: One end of the pneumatic ball valve (1) is connected to an air inlet pipe (2) via a first flange, the other end of the pneumatic ball valve (1) is connected to an expansion joint (3) via a second flange, the other end of the expansion joint (3) is connected to an internal elbow (4) via a third flange, and the bottom end of the internal elbow (4) is connected to an oil and gas recovery joint (5).

2. A novel pressure-bearing oil and gas recovery structure according to claim 1, characterized in that: The bottom end of the air inlet pipe (2) penetrates the tank body and extends to the inside of the tank body, and the bottom end of the internal curved pipe (4) penetrates the tank body and extends to the outside of the tank body.

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