Anti-corrosion and anti-scale gas anchor

Abstract

The utility model discloses an anti-corrosion and anti-scale gas anchor which comprises a main outer pipe and an upper connecting body, the upper connecting body is arranged on the upper portion of the main outer pipe, a lower connector is arranged on the lower portion of the main outer pipe, two one-way exhaust valve structures are arranged in the main outer pipe, one one-way exhaust valve structure is arranged on the upper portion of the main outer pipe, and the other one one-way exhaust valve structure is arranged on the lower portion of the main outer pipe. The other one-way exhaust valve structure is arranged in an annular space formed among the middle of the outer main pipe, the inner wall of the main outer pipe, the long-short connector, the middle connector, the short-short connector and the filter coupling, the long spiral connector is installed on the long-short connector, the short spiral connector is installed on the short-short connector, and the long-short connector and the short-short connector are connected through the middle connector. The oil-sand separation device is installed on the lower portion of the oil well pump, in the oil extraction process and when the oil well pump pumps oil, oil-gas-sand separation can be effectively carried out, therefore, bad influences on oil extraction of the oil well pump caused by gas and sand are prevented, and the oil-sand separation device is simple in structure and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of well pump parts, in particular to an anti-corrosion and anti-fouling gas anchor. Background Art

[0002] Existing technical status: During the oil pumping process of the oil well, gas will be generated in the lower part of the oil pump, which will affect the oil pumping. There are also debris such as sand, which will be sucked into the oil pump and cause sand jam. At present, there is a lack of auxiliary parts with oil, gas and sand separation function in the lower part of the oil pump. Therefore, it is necessary to provide an oil, gas and sand separation equipment for the lower part of the oil well. Utility Model Content

[0003] The utility model aims to provide an anti-corrosion and anti-fouling gas anchor to solve the problem in the above background technology that the lower part of the existing oil pump lacks auxiliary parts with oil, gas and sand separation function.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an anti-corrosion and anti-fouling gas anchor, comprising a main outer tube and an upper connecting body, an upper connecting body is arranged on the upper part of the main outer tube, the upper connecting body is connected to the lower part of the oil pump sand control pipe, a lower joint is arranged on the lower part of the main outer tube, two one-way exhaust valve structures are arranged inside the main outer tube, one of the one-way exhaust valve structures is arranged on the upper part of the main outer tube, and the other one-way exhaust valve structure is arranged in the middle part of the outer main tube, a long short connection, a middle connector, a short short connection and a filter coupling are arranged in the main outer tube from top to bottom, in the annular space formed between the inner wall of the main outer tube and the long short connection, the middle connector, the short short connection and the filter coupling, the long spiral connection is installed on the long short connection, the short spiral connection is installed on the short short connection, and the long short connection and the short short connection are connected through the middle connector.

[0005] Furthermore, the one-way exhaust valve structure includes a one-way exhaust valve ball and a valve seat, and the one-way exhaust valve ball is arranged in the valve seat.

[0006] Furthermore, the end of the valve seat located in the middle of the main outer tube is fixed to the middle of the middle connecting body, and the valve seat located in the upper part of the main outer tube is arranged in the middle of the upper connecting body.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] The utility model is installed at the lower part of the oil pump. During the oil production process, when the oil pump is pumping oil, the oil, gas and sand can be effectively separated, thereby preventing the gas and sand from having an adverse effect on the oil production of the oil pump. The utility model has a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] In the above drawings, 1, upper connecting body, 2, one-way exhaust valve ball, 3, valve seat, 4, long spiral connection, 5, long short connection, 6, main outer pipe, 7, middle connecting body, 8, short spiral connection, 9, short short connection, 10, filter coupling, 11, lower joint. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0012] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0013] like Figure 1 As shown, the utility model includes a main outer tube 6 and an upper connecting body 1 and a lower joint 11 of the upper part of the main outer tube 6. The upper connecting body 1 is connected to the lower part of the oil well pump sand control pipe. The main outer tube 6 is provided with a long short connection 5, a middle connecting body 7, a short connection 9 and a filter coupling 10 from top to bottom. The long short connection and the short connection 9 are connected through the middle connecting body 7. In the annular space formed between the inner wall of the main outer tube 6 and the long short connection 5, the middle connecting body 7, the short connection 9 and the filter coupling 10, the long spiral connection 4 is installed on the long short connection 5. The short spiral connection 8 is installed on the short short connection 9. Two one-way exhaust valve structures are arranged inside the main outer tube 6. The one-way exhaust valve structure includes a one-way exhaust valve ball 2 and a valve seat 3. The one-way exhaust valve ball 2 is arranged in the valve seat 3. The end of the valve seat 3 located in the middle of the main outer tube 6 is fixed to the middle of the middle connector 7. The valve seat 3 located at the upper part of the main outer tube 6 is arranged in the middle of the upper connecting body 1. The long spiral connection 4 is arranged between the two one-way exhaust valve structures. The short spiral connection 8 is arranged below the one-way exhaust valve structure in the middle of the outer main tube.

[0014] Crude oil enters the annular space from the oil inlet hole at the top of the main outer tube 6. Due to the different densities of oil and gas, the oil and gas are initially separated by gravity. The crude oil then enters the interior through the filter hole of the lower filter coupling 10 and moves upward, so that the oil flows upward. The filter coupling 10 is arranged below the short spiral connection 8. The oil enters the spiral channel through the short spiral connection 8. Due to the centrifugal force generated by the spiral, the gas rises along the spiral blades. When a certain pressure is reached, the one-way valve ball in the middle of the main outer tube 6 is automatically pushed open to leave the corresponding valve seat 3. The one-way exhaust valve in the middle of the main outer tube 6 is opened. The gas rises through the spiral blades of the short spiral connection 8. When a certain pressure is reached, the one-way valve ball on the top of the main outer tube 6 is automatically pushed open to leave the corresponding valve seat 3. The one-way exhaust valve on the top of the main outer tube 6 is opened. The gas discharge device forms oil and gas separation, thereby reducing the impact of gas on the production of the oil well pump.

[0015] In the utility model, the inner and outer surfaces of the main outer tube 6 and the internal long and short connections 5 and short connections 9 are treated with nano-spraying technology for surface anti-corrosion, and have good anti-corrosion performance. The one-way exhaust valve ball 2 is made of polytetrafluoroethylene, which is anti-corrosion, anti-scaling and wear-resistant.

Claims

1. Anti-corrosion and anti-fouling air anchor, characterized by: It includes a main outer pipe and an upper connecting body. The upper part of the main outer pipe is provided with an upper connecting body, which is connected to the lower part of the oil pump sand control pipe. The lower part of the main outer pipe is provided with a lower joint. Two one-way exhaust valve structures are arranged inside the main outer pipe, one of which is arranged on the upper part of the main outer pipe, and the other one-way exhaust valve structure is arranged in the middle part of the outer main pipe. Long and short connections, middle connectors, short connections and filter couplings are arranged in the main outer pipe from top to bottom. In the annular space formed between the inner wall of the main outer pipe and the long and short connections, the middle connectors, the short connections and the filter coupling, the long spiral connection is installed on the long and short connections, the short spiral connection is installed on the short connection, and the long and short connections and the short connections are connected through the middle connector.

2. The anti-corrosion and anti-fouling air anchor according to claim 1, characterized in that: The one-way exhaust valve structure comprises a one-way exhaust valve ball and a valve seat, wherein the one-way exhaust valve ball is arranged in the valve seat.

3. The anti-corrosion and anti-fouling air anchor according to claim 2, characterized in that: The end of the valve seat located in the middle of the main outer tube is fixed to the middle of the middle connecting body, and the valve seat located in the upper part of the main outer tube is arranged in the middle of the upper connecting body.

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