A new type of chemical agent injection device

Abstract

The present invention provides a novel chemical agent injection device, comprising a reducer and an injection piece arranged in sequence from top to bottom, the inner diameter of the bottom of the reducer is the same as the inner diameter of the top of the injection piece, the upper end of the reducer is sleeved with a first flange, the lower end of the reducer is sleeved with a second flange, the injection piece comprises an injection joint and a pipe body, a third flange is sleeved below the injection joint, the second flange and the third flange are fixedly connected by bolts, an upper sealing gasket is padded between the injection joint and the second flange, a lower sealing gasket is padded between the injection joint and the third flange, a medicine delivery hole is opened on the bottom side wall of the pipe body, and a short tube and a pipe seat are sleeved on the pipe body in sequence from top to bottom. The present invention realizes the interchangeability of injection pieces of the same pressure level, and when better injection pieces are used, it is only necessary to disassemble the flange connection, replace it, and then retighten the flange connection to complete the operation, which is convenient to operate and can realize standardized, serialized and mass production.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical agent injection equipment, and more specifically, to a novel chemical agent injection device. Background Art

[0002] The development of offshore oil and gas fields is inseparable from chemical agents, which are mainly used to add to production fluids and seawater and other media to improve the processing efficiency of relevant processing equipment, protect production equipment and wellhead pipelines, and extend the service life of production equipment and pipelines. As part of the chemical injection system, the chemical injection parts extend into the pipeline and are eroded and corroded by the production fluid. As the use time increases, the injection parts will be damaged to varying degrees, affecting the injection effect of the chemical. The replacement cost of the injection parts is relatively high. With the continuous development of science and technology, some successfully developed chemical injection parts can solve the problem of high replacement cost of injection parts. However, due to the high production and manufacturing costs and diverse design structures, it is difficult to achieve standardized, serialized and mass production.

[0003] Therefore, there is an urgent need in the prior art for a technical solution that can be manufactured as standard parts, achieve standardization and serialization according to pressure levels during the production process, solve the problem of repair and replacement of chemical agent injection parts, and help optimize the production process. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a novel chemical agent injection device.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A novel chemical agent injection device is composed of a device body, which includes a reducer and an injection piece arranged in sequence from top to bottom, the inner diameter of the bottom of the reducer is the same as the inner diameter of the top of the injection piece, the upper end of the reducer is sleeved with a first flange, and the lower end of the reducer is sleeved with a second flange, the injection piece includes an injection joint and a pipe body, a third flange is sleeved below the injection joint, the second flange and the third flange are fixedly connected by bolts, an upper sealing gasket is padded between the injection joint and the second flange, and a lower sealing gasket is padded between the injection joint and the third flange, a medicine delivery hole is opened on the bottom side wall of the pipe body, and a short pipe and a pipe seat are sleeved on the pipe body in sequence from top to bottom.

[0007] The injection joint is provided with an upper groove corresponding to the second flange, and the upper sealing gasket is arranged in the upper groove. The injection joint is provided with a lower groove corresponding to the third flange, and the lower sealing gasket is arranged in the lower groove.

[0008] The number of the bolts is four.

[0009] The injection piece is a T-shaped hollow tube.

[0010] Compared with the prior art, the present invention has the following advantages: by connecting the injection piece, the flange and the reducer in a detachable manner, the injection pieces of the same pressure level can be interchanged and used universally. When replacing the injection piece, it is only necessary to disassemble the flange connection, replace it and then retighten the flange connection to complete the operation, which is convenient to operate; and the liquid distribution effect of the chemical agent in the production fluid pipeline allows the chemical agent and the production fluid to be evenly mixed as quickly as possible, reducing the scouring of the production fluid pipeline; the processing is simple and the cost is low, and standardized, serialized and mass production can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention.

[0012] Figure 2 yes Figure 1 Cross-section along the diameter.

[0013] Figure 3 It is a schematic diagram of the structure of the injection part.

[0014] Figure 4 yes Figure 3 AA surface cross-section diagram.

[0015] Figure numerals: 1-first flange, 2-reducing pipe, 3-second flange, 4-bolt, 5-injection piece, 51-injection joint, 52-tube body, 53-drug delivery hole, 61-upper sealing gasket, 62 lower sealing gasket, 7-third flange, 8-short pipe, 9-pipe seat, 10-production fluid pipeline. DETAILED DESCRIPTION

[0016] like Figure 1-4 The new chemical agent injection device shown is composed of a device body, which includes a reducer 2 and an injection piece 5 arranged in sequence from top to bottom. The inner diameter of the bottom of the reducer 2 is the same as the inner diameter of the top of the injection piece 5. The upper end of the reducer 2 is sleeved with a first flange 1, and the lower end of the reducer 2 is sleeved with a second flange 3. The injection piece 5 includes an injection joint 51 and a pipe body 52. ​​The injection piece 5 is a T-shaped hollow tube, and the cavity is used to inject chemicals. A third flange 7 is sleeved below the injection joint 51. The second flange 3 and the third flange 7 are fixedly connected by bolts 4. In this embodiment, the number of bolts 4 is four. In other embodiments of the present invention, the number of bolts 4 can also be six, eight, etc. The bolts 4 are distributed at equal intervals along the circumference. Four bolts 4 pass through the second flange 3 and the third flange 7 and are locked and fixed, so that the second flange 3 and the third flange 7 can clamp the injection joint 51 of the injection piece 5, so that the injection piece 5 is stable.

[0017] An upper sealing gasket 61 is provided between the injection joint 51 and the second flange 3, a lower sealing gasket 62 is provided between the injection joint 51 and the third flange 7, an upper groove is provided corresponding to the injection joint 51 and the second flange 3, the upper sealing gasket 61 is provided in the upper groove, a lower groove is provided corresponding to the injection joint 51 and the third flange 7, the lower sealing gasket 62 is provided in the lower groove, and the sealing effect with the flange is better to prevent the chemical agent from leaking out when it passes through the reducer 2 and enters the injection member 5.

[0018] A medicine delivery hole 53 is provided on the bottom side wall of the tube body 52 , and a short tube 8 and a tube seat 9 are sequentially sleeved on the tube body 52 from top to bottom.

[0019] When using the device to inject chemical agents, the bottom of the tube body 52 of the injection piece 5 is inserted into the production fluid pipeline 10, and the tube seat 9 is supported on the outer wall of the production fluid pipeline 10. The entire device is connected to the agent input end through the first flange 1. The drug is injected into the device from the top of the reducer 2, flows into the injection piece 5 through the reducer 2, and finally enters the production fluid pipeline 10 from the drug delivery hole 53 on the bottom side wall of the tube body 52. ​​After the injection is completed, the device is removed from the production fluid pipeline 10, the bolts 4 are loosened, the old injection piece can be disassembled, and a new injection piece with the same pressure level can be replaced, and the bolts 4 are tightened again, and the device can continue to be used.

[0020] The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A novel chemical agent injection device, consisting of a device body, characterized in that: The device body comprises a reducer (2) and an injection piece (5) arranged in sequence from top to bottom, the inner diameter of the bottom of the reducer (2) is the same as the inner diameter of the top of the injection piece (5), the upper end of the reducer (2) is sleeved with a first flange (1), and the lower end of the reducer (2) is sleeved with a second flange (3), the injection piece (5) comprises an injection joint (51) and a pipe body (52), a third flange (7) is sleeved below the injection joint (51), the second flange (3) and the third flange (7) are fixedly connected by bolts (4), an upper sealing gasket (61) is padded between the injection joint (51) and the second flange (3), and a lower sealing gasket (62) is padded between the injection joint (51) and the third flange (7), a medicine delivery hole (53) is opened on the bottom side wall of the pipe body (52), and a short pipe (8) and a pipe seat (9) are sleeved on the pipe body (52) in sequence from top to bottom; The injection joint (51) is provided with an upper groove corresponding to the second flange (3), the upper sealing gasket (61) is arranged in the upper groove, the injection joint (51) is provided with a lower groove corresponding to the third flange (7), the lower sealing gasket (62) is arranged in the lower groove; The injection piece (5) is a T-shaped hollow tube.

2. A novel chemical agent injection device according to claim 1, characterized in that: The number of the bolts (4) is four.

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