Optimized nitrogen injection device for oil field production

Abstract

The utility model discloses an oil field production optimized nitrogen injection device which comprises a medium conveying pipe used for supporting, a connecting flange fixedly arranged at the center of the rear end face of the medium conveying pipe, and a fixing clamping groove formed in the middle of the outer end face of the medium conveying pipe. By arranging the supporting device and the nitrogen injection device, when nitrogen injection operation is carried out, the threaded guide shaft is in threaded connection with the threaded connection base, so that a subsequent user can conveniently, rapidly and stably guide a nitrogen guide pipe into a medium conveying pipe, and the nitrogen injection operation is convenient. And meanwhile, the sealing clamping plate can conduct multi-stage sealing operation on the introduced nitrogen guide pipe through the positioning insertion hole, the stability of nitrogen filling sealing on the nitrogen guide pipe is improved to the maximum degree, meanwhile, the four sets of sealing clamping bases can facilitate follow-up users to adjust the number of the installed nitrogen injection devices according to requirements, and the adaptability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen filling equipment, in particular to an oil field production optimization nitrogen injection device. Background Art

[0002] During hot work inspection and emergency repair work on pipelines transporting flammable and explosive media such as oil and natural gas, in order to ensure the safety of the inspection and emergency repair, it is necessary to cut off the pipelines related to the hot work, and at the same time, the internal fluid needs to be emptied and then injected with nitrogen or other inert gases for replacement, thereby improving the safety performance and stability of subsequent inspections.

[0003] For example, the utility model patent disclosed in the publication number CN206943638U is a nitrogen injection device for hot work in oil and gas pipelines, comprising an annular sheet, a special-shaped tube, a round tube, a ball valve, and an air pipe joint (106), wherein the annular sheet is used to be inserted into the flange gap of the oil and gas pipeline to be hot work, and a nitrogen injection channel (102) is arranged inside the annular sheet; the special-shaped tube is connected to the annular sheet and the round tube respectively; the air pipe joint (106) is connected to the round tube through a ball valve. By improving the internal structure and setting method of its key components, the utility model can effectively solve the problems of inconvenient installation and long time consumption of nitrogen injection operation in hot work of oil and gas pipelines, and the inability to further improve the efficiency of hot work, compared with the prior art.

[0004] Although the above equipment can perform nitrogen injection operations, it still needs to plug the nitrogen injection pipeline into the pipeline where the medium flows, and still requires a lot of manual operation, which reduces the efficiency of nitrogen injection and also reduces the efficiency of subsequent emergency repairs. Therefore, an oilfield production optimization nitrogen injection device is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a nitrogen injection device for optimizing oil field production, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an oilfield production optimization nitrogen injection device, comprising a medium delivery pipe for support, a connecting flange fixedly arranged at the center of the rear end face of the medium delivery pipe, and a fixed card groove opened at the middle of the outer end face of the medium delivery pipe,

[0007] Alignment holes, wherein the alignment holes are provided in four groups, and the four groups of alignment holes are equidistantly arranged in the interior of the fixed card slot;

[0008] A supporting device, the supporting device is fixedly arranged on the inner end surface of the fixed card slot, and four sets of sealing devices are elastically slidably engaged with the inner end surface of the supporting device;

[0009] A nitrogen injection device is threadedly connected to the upper end surface of the supporting device.

[0010] Preferably, the supporting device comprises a fixing clamp ring, and four groups of sealing seats are equidistantly arranged on the side end surface of the fixing clamp ring, and a threaded seat is fixedly arranged on the upper end surface of the sealing seat near the side.

[0011] Preferably, the nitrogen injection device comprises a nitrogen conduit, a hexagonal clamping plate is fixedly provided on the outer end surface of the nitrogen conduit near the upper opening, and a threaded guide shaft is fixedly installed on the lower end surface of the hexagonal clamping plate.

[0012] Preferably, the sealing device includes a connecting handle, and three groups of sealing card plates are equidistantly arranged on the inner end surface of the connecting handle, and a positioning hole is opened from the upper end surface of the sealing card plate to the bottom, and two groups of spring guide shafts are arranged on the inner end surface of each group of sealing card plates.

[0013] Preferably, the diameter of the positioning hole is equal to the diameter of the nitrogen conduit, and the spring guide shaft is fixedly connected to the inner wall of the sealing seat, and the threaded guide shaft is threadedly connected to the sealing seat through the threaded connector. The threaded connection between the threaded guide shaft and the threaded connector can effectively improve the convenience of subsequent installation and disassembly of the nitrogen injection device. At the same time, multiple sets of sealing connectors can facilitate subsequent users to adjust the amount of nitrogen added to the nitrogen injection device according to needs.

[0014] Preferably, the sealing card plate is elastically slidably clamped inside the sealing card seat through the spring guide shaft, and the fixed clamp ring is sealed and fixedly clamped on the outer end surface of the medium conveying pipe through the fixed clamping groove. The three groups of sealing card plates can be displaced back and forth inside the sealing card seat through the spring guide shaft. At the same time, the positioning holes inside the three groups of sealing card plates can perform multi-stage sealing on the outside of the nitrogen conduit, which effectively improves the sealing performance of subsequent nitrogen filling.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model provides a supporting device and a nitrogen injection device. When performing nitrogen filling operation, the threaded connection between the threaded guide shaft and the threaded connector can facilitate subsequent users to quickly and stably introduce the nitrogen conduit into the interior of the medium delivery pipe. At the same time, the sealing card plate can perform multi-stage sealing operations on the introduced nitrogen conduit through the positioning jack, thereby maximally improving the stability of nitrogen filling sealing of the nitrogen conduit. At the same time, the four sets of sealing card seats can facilitate subsequent users to adjust the number of nitrogen injection devices installed according to needs, thereby improving the adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a disassembled diagram of the main body of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the main body of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the support device of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the nitrogen injection device of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the sealing device of the utility model.

[0022] In the figure: 1-alignment hole, 2-support device, 3-nitrogen injection device, 4-fixed card slot, 5-medium delivery pipe, 6-connecting flange, 7-sealing device, 21-threaded seat, 22-sealing card seat, 23-fixing clamping ring, 31-nitrogen conduit, 32-hexagonal card plate, 33-threaded guide shaft, 71-connecting handle, 72-sealing card plate, 73-positioning socket, 74-spring guide shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments 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 in 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.

[0024] See also Figure 1-5 The utility model provides an embodiment: a nitrogen injection device for optimizing oilfield production, comprising a medium delivery pipe 5 for support, a connecting flange 6 is fixedly arranged at the center of the rear end surface of the medium delivery pipe 5, and a fixed card slot 4 is opened at the middle of the outer end surface of the medium delivery pipe 5.

[0025] Alignment holes 1, there are four groups of alignment holes 1, and the four groups of alignment holes 1 are equidistantly arranged inside the fixed card slot 4;

[0026] The supporting device 2 is fixedly arranged on the inner end surface of the fixed card slot 4, and four sets of sealing devices 7 are elastically slidably connected to the inner end surface of the supporting device 2;

[0027] The nitrogen injection device 3 is threadedly connected to the upper end surface of the supporting device 2 .

[0028] The supporting device 2 comprises a fixing clamp ring 23 , and four groups of sealing seats 22 are equidistantly arranged on the side end surface of the fixing clamp ring 23 , and a threaded connection seat 21 is fixedly arranged on the upper end surface of the sealing seat 22 near the side.

[0029] The nitrogen injection device 3 comprises a nitrogen conduit 31 , a hexagonal clamping plate 32 is fixedly provided on the outer end surface of the nitrogen conduit 31 near the upper opening, and a threaded guide shaft 33 is fixedly installed on the lower end surface of the hexagonal clamping plate 32 .

[0030] The sealing device 7 includes a connecting handle 71, and three groups of sealing clamps 72 are equidistantly arranged on the inner end surface of the connecting handle 71, and a positioning hole 73 is opened from the upper end surface of the sealing clamp 72 to the bottom, and two groups of spring guide shafts 74 are arranged on the inner end surface of each group of sealing clamps 72.

[0031] The diameter of the positioning hole 73 is equal to the diameter of the nitrogen conduit 31, and the spring guide shaft 74 is fixedly connected to the inner wall of the sealing seat 22, and the threaded guide shaft 33 is threadedly connected to the sealing seat 22 through the threaded connector 21. The threaded connection between the threaded guide shaft 33 and the threaded connector 21 can effectively improve the convenience of subsequent installation and disassembly of the nitrogen injection device 3. At the same time, multiple sets of sealing seats 22 can facilitate subsequent users to adjust the amount of nitrogen added to the nitrogen injection device 3 according to needs.

[0032] The sealing card plate 72 is elastically slidably clamped in the sealing card seat 22 through the spring guide shaft 74, and the fixed clamp ring 23 is sealed and fixedly clamped on the outer end surface of the medium conveying pipe 5 through the fixed card groove 4. The three groups of sealing card plates 72 can be displaced back and forth in the sealing card seat 22 through the spring guide shaft 74. At the same time, the positioning holes 73 inside the three groups of sealing card plates 72 can perform multi-stage sealing on the outside of the nitrogen conduit 31, which effectively improves the sealing performance of subsequent nitrogen filling.

[0033] Working principle: Before filling, the user can connect the external nitrogen pipeline to the upper part of the nitrogen conduit 31. During use, if it is necessary to fill the medium delivery pipe 5 with nitrogen, the user can hold the connecting handle 71, and the connecting handle 71 can synchronously drive the four sets of sealing clamps 72 to move outward until the positioning hole 73 is coaxial with the threaded seat 21. At this time, the nitrogen conduit 31 can be inserted into the sealing clamp seat 22 through the threaded seat 21, and then the hexagonal clamp plate 32 can be rotated by an external tool, and the hexagonal clamp plate 32 can be screwed into the threaded seat 21 through the threaded guide shaft 33, so that the nitrogen conduit 31 is inserted into the fixed clamp ring 23, which is convenient for subsequent nitrogen filling.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nitrogen injection device for optimizing oilfield production, comprising a medium delivery pipe (5) for support, a connecting flange (6) fixedly arranged at the center of the rear end surface of the medium delivery pipe (5), and a fixed groove (4) opened at the middle of the outer end surface of the medium delivery pipe (5), characterized in that: Alignment holes (1), wherein the alignment holes (1) are provided in four groups in total, and the four groups of alignment holes (1) are equidistantly arranged through the interior of the fixed slot (4); A support device (2), the support device (2) being fixedly arranged on the inner end surface of the fixed slot (4), and having four sets of sealing devices (7) elastically slidably engaged on the inner end surface of the support device (2); A nitrogen injection device (3), the nitrogen injection device (3) being threadedly connected to the upper end surface of the support device (2); The supporting device (2) comprises a fixed clamp ring (23), the side end surface of the fixed clamp ring (23) is provided with four groups of sealing clamp seats (22) at equal intervals, and a threaded connection seat (21) is fixedly provided on the upper end surface of the sealing clamp seat (22) near the side portion; The nitrogen injection device (3) comprises a nitrogen conduit (31), a hexagonal clamping plate (32) being fixedly arranged on the outer end surface of the nitrogen conduit (31) near the upper opening, and a threaded guide shaft (33) being fixedly installed on the lower end surface of the hexagonal clamping plate (32); The sealing device (7) comprises a connecting handle (71), the inner end surface of the connecting handle (71) being provided with three groups of sealing card plates (72) at equal intervals, and a positioning plug hole (73) being provided from the upper end surface of the sealing card plates (72) to the bottom, and the inner end surface of each group of the sealing card plates (72) being provided with two groups of spring guide shafts (74).

2. The oilfield production optimization nitrogen injection device according to claim 1, characterized in that: The diameter of the positioning socket (73) is equal to the diameter of the nitrogen conduit (31), and the spring guide shaft (74) is fixedly connected to the inner wall of the sealing seat (22), and the threaded guide shaft (33) is threadedly connected to the sealing seat (22) through the threaded connector (21).

3. The oilfield production optimization nitrogen injection device according to claim 2, characterized in that: The sealing clamping plate (72) is elastically slidably clamped inside the sealing clamping seat (22) via the spring guide shaft (74), and the fixing clamping ring (23) is sealingly fixedly clamped on the outer end surface of the medium conveying pipe (5) via the fixing clamping groove (4).

Images