Quick-change connector of oil field chemical agent closed type filling device

Abstract

The utility model relates to the technical field of oil field equipment, and discloses a quick-change connector of an oil field chemical agent closed type filling device, which comprises a connector body, a connecting pipe is fixedly connected in the connector body, a hose is fixedly connected in the connecting pipe, a one-way valve is fixedly connected on the outer wall of the hose, and the one-way valve is fixedly connected on the outer wall of the hose. An electric telescopic rod is fixedly connected into the connector body, a sealing plug is fixedly connected to the output end of the electric telescopic rod, a limiting ball is fixedly connected to the outer wall of the sealing plug, a sealing ring is fixedly connected to the outer wall of the sealing plug, and a sealing ring is slidably connected to the outer wall of the sealing plug. According to the quick-change connector, the sealing plug is pushed to be attached to the interior of the sealing ring through the electric telescopic rod, meanwhile, the limiting ball and the sealing ring can be attached to the interior of the sealing ring, the problem that most of guide pipes connected with existing quick-change connectors cannot well seal internal medicine is solved, and use safety of the quick-change connector is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field equipment, in particular to a quick-change joint of a closed filling device for oil field chemical agents. Background Art

[0002] Wax removal is an important task in the crude oil production process of oilfields. There are many ways to remove wax, among which adding oilfield chemicals (mainly wax removal agents) is the most common, simplest and most economical method. Whether oilfield chemicals are added in a timely and accurate manner directly affects the crude oil production and the oil transportation safety of the oil pipeline.

[0003] A Chinese patent document with a search announcement number of CN211287627U discloses a closed filling device for oilfield chemicals, including a base plate, a storage barrel is fixedly installed on the left side of the top of the base plate, and a barrel cover is threadedly connected to the barrel mouth of the storage barrel, a first delivery pipe connected to the inner cavity of the storage barrel is inserted at the bottom of the front side of the storage barrel, and one end of the first delivery pipe away from the storage barrel is connected to and communicated with the inlet of a pressure pump, the pressure pump is fixedly installed on the top of the base plate, and one end of the pressure pump is fixedly connected to the outlet of the pressure pump. The closed filling device for oilfield chemicals enables the chemicals in the storage barrel to be discharged into the filling mechanism under the pressure of the booster pump through the coordinated arrangement of the connecting pipe, the liquid guide pipe, the hose and the movable pipe in the filling mechanism. The connecting pipe is connected to the oil pipeline to carry out the filling of the chemicals. The chemicals can be effectively diverted at equal distances to ensure uniform contact with the inner wall of the pipeline. However, in this solution, the connection between the quick-change connector and the filling pipe is relatively simple and is closed by a valve. If used for a long time, the chemicals in the pipe are prone to leakage. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a quick-change joint for a closed filling device for oilfield chemical agents, aiming to improve the problem that most of the guide tubes connected by the existing quick-change joints cannot seal the internal agents well.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a quick-change connector for a closed filling device of oilfield chemicals, comprising a connector body, a connecting pipe is fixedly connected to the interior of the connector body, a hose is fixedly connected to the interior of the connecting pipe, a one-way valve is fixedly connected to the outer wall of the hose, an electric telescopic rod is fixedly connected to the interior of the connector body, a sealing plug is fixedly connected to the output end of the electric telescopic rod, a limiting ball is fixedly connected to the outer wall of the sealing plug, a sealing ring is fixedly connected to the outer wall of the sealing plug, a sealing ring is slidably connected to the outer wall of the sealing plug, the limiting ball and the outer wall of the sealing ring are both slidably connected to the interior of the sealing ring, the outer wall of the sealing ring is fixedly connected to a fixing sleeve, the outer wall of the fixing sleeve is fixedly connected to the interior of the connector body, the outer wall sleeve of the electric telescopic rod is provided with a first spring, one end of the first spring is fixedly connected to the interior of the connector body, the other end of the first spring is fixedly connected to the outer wall of the sealing plug, and the outer wall of the connector body is provided with a connecting assembly.

[0006] Furthermore, the connection assembly comprises a flange ring, the interior of the flange ring is fixedly connected to the outer wall of the joint body, and a positioning tube is fixedly connected to the interior of the flange ring.

[0007] Furthermore, a fixing seat is fixedly connected to the outer wall of the positioning tube, and a filling pipe is slidably connected to the interior of the positioning tube.

[0008] Furthermore, a fixing ring is fixedly connected to the outer wall of the filling pipe, a latch is slidably connected to the interior of the fixing ring, an outer wall of the latch penetrates into the interior of the fixing seat, and an outer wall of the latch is slidably connected to the interior of the positioning pipe.

[0009] Furthermore, a fixing block is fixedly connected to the outer wall of the positioning tube, and a second spring is arranged inside the fixing block.

[0010] Furthermore, one end of the second spring is fixedly connected to the interior of the fixed block, and the other end of the second spring is fixedly connected to a locking ball.

[0011] Furthermore, the outer wall of the fixing ring is fixedly connected to the limiting plate, and the outer wall of the locking ball is slidably connected to the inside of the limiting plate.

[0012] Furthermore, a slider is fixedly connected to the interior of the positioning tube, and an outer wall of the slider is slidably connected to the interior of the filling tube.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the sealing plug is first pushed to fit inside the sealing ring by the electric telescopic rod, and at the same time, the limit ball and the sealing ring are also fitted inside the sealing ring, thereby ensuring that there is no leakage in the tube, thereby achieving the effect of strengthening the sealing inside the tube, solving the problem that most of the guide tubes connected by the existing quick-change joints cannot seal the internal medicine well, improving the sealing performance of the quick-change joint, and ensuring the safety of the device.

[0015] 2. In the utility model, the filling pipe is rotated to drive the card ball to slide out of the limit plate, and the slider slides out of the filling pipe, so as to achieve the effect of quickly disassembling the quick-change connector and the filling pipe, which solves the problem that most of the existing quick-change connectors and the filling pipes are complicated and not convenient for disassembly and maintenance, improves the convenience of the quick-change connector, and extends the service life of the quick-change connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a quick-change connector of a closed filling device for oilfield chemicals proposed by the utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of a quick-change joint of a closed filling device for oilfield chemicals proposed by the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the filling pipe structure of a quick-change joint of a closed filling device for oilfield chemicals.

[0019] Legend:

[0020] 1. Connector body; 2. Connecting pipe; 3. Hose; 4. One-way valve; 5. Electric telescopic rod; 6. Sealing plug; 7. Limiting ball; 8. Sealing ring; 9. Sealing ring; 10. Fixed sleeve; 11. First spring; 12. Flange ring; 13. Positioning pipe; 14. Fixed seat; 15. Filling pipe; 16. Fixed ring; 17. Latch; 18. Fixed block; 19. Second spring; 20. Card ball; 21. Limiting plate; 22. Slider. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figure 1 and Figure 2, The utility model provides an embodiment: a quick-change connector for a closed filling device of oilfield chemicals, comprising a connector body 1, a connecting pipe 2 is fixedly connected inside the connector body 1, a hose 3 is fixedly connected inside the connecting pipe 2, a one-way valve 4 is fixedly connected to the outer wall of the hose 3, an electric telescopic rod 5 is fixedly connected inside the connector body 1, a sealing plug 6 is fixedly connected to the output end of the electric telescopic rod 5, a limiting ball 7 is fixedly connected to the outer wall of the sealing plug 6, a sealing ring 8 is fixedly connected to the outer wall of the sealing plug 6, a sealing ring 9 is slidably connected to the outer wall of the sealing plug 6, the limiting ball 7 and the sealing ring 8 are both slidably connected to the inside of the sealing ring 9, the outer wall of the sealing ring 9 is fixedly connected to a fixing sleeve 10, the outer wall of the fixing sleeve 10 is fixedly connected to the inside of the connector body 1, the outer wall sleeve of the electric telescopic rod 5 is provided with a first spring 11, one end of the first spring 11 is fixedly connected to the inside of the connector body 1, the other end of the first spring 11 is fixedly connected to the outer wall of the sealing plug 6, and a connecting component is provided on the outer wall of the connector body 1;

[0023] Specifically, when sealing is required, the output end of the electric telescopic rod 5 will push the sealing plug 6 to move upward. As the sealing plug 6 rises, it will gradually fit inside the sealing ring 9 to form a preliminary sealing structure. At the same time, the limiting ball 7 and the sealing ring 8 are also fitted inside the sealing ring 9 respectively. The limiting ball 7 is used to limit the range of movement of the sealing plug 6 to ensure that it does not rise or fall excessively, thereby maintaining a stable sealing state. The sealing ring 8 further enhances the sealing effect between the sealing plug 6 and the sealing ring 9. The sealing ring 9 is fixed inside the fixed sleeve 10, and the fixed sleeve 10 is further fixed inside the joint body 1. This enables the sealing ring 9 to fit closely to the inner wall of the joint body 1, thereby effectively preventing the leakage of the agent. In addition, the fixed sleeve 10 can support and stabilize the sealing ring 9, so that it can maintain stable sealing performance under various working conditions. Then, it is connected between the sealing plug 6 and the joint body 1 through the first spring 11, and the sealing plug 6 is continuously pushed by its elastic force. This allows the sealing plug 6 to maintain a close fit with the sealing ring 9 even when subjected to external pressure or temperature changes, thereby enhancing the sealing effect inside the pipe.

[0024] Reference Figure 2 The connection assembly includes a flange ring 12, the interior of the flange ring 12 is fixedly connected to the outer wall of the joint body 1, and the interior of the flange ring 12 is fixedly connected to a positioning tube 13;

[0025] Specifically, the flange ring 12 is fixed to the outer wall of the joint body 1 and connected to the positioning tube 13, so that the flange ring 12 can connect the joint body 1 and the positioning tube 13, thereby achieving the effect of ensuring the stable connection between the joint body 1 and the flange ring 12.

[0026] Reference Figure 1 and Figure 3The outer wall of the positioning tube 13 is fixedly connected with a fixing seat 14, and the interior of the positioning tube 13 is slidably connected with a filling tube 15; the outer wall of the filling tube 15 is fixedly connected with a fixing ring 16, and the interior of the fixing ring 16 is slidably connected with a latch 17, the outer wall of the latch 17 penetrates into the interior of the fixing seat 14, and the outer wall of the latch 17 is slidably connected to the interior of the positioning tube 13; the outer wall of the positioning tube 13 is fixedly connected with a fixing block 18, and a second spring 19 is arranged inside the fixing block 18; one end of the second spring 19 is fixedly connected to the interior of the fixing block 18, and the other end of the second spring 19 is fixedly connected with a card ball 20; the outer wall of the fixing ring 16 is fixedly connected to a limiting plate 21, and the outer wall of the card ball 20 is slidably connected to the interior of the limiting plate 21; the interior of the positioning tube 13 is fixedly connected with a slider 22, and the outer wall of the slider 22 is slidably connected to the interior of the filling tube 15;

[0027] Specifically, when the filling pipe 15 needs to be disassembled, the latch 17 is first pulled out. The pulling out of the latch 17 releases the fixing relationship between the fixing seat 14 and the fixing ring 16. Next, by rotating the filling pipe 15, the slider 22 can slide inside the filling pipe 15. In this process, the limit plate 21 pushes the card ball 20 to squeeze the second spring 19 inside the fixed block 18. This utilizes the elasticity of the spring so that the card ball 20 can smoothly slide out of the limit plate 21 when squeezed. As the filling pipe 15 continues to rotate, the slider 22 eventually slides out of the filling pipe 15, and the card ball 20 also slides out of the limit plate 21. At this time, the connection between the quick-change connector and the filling pipe 15 has been completely released, achieving the effect of quick disassembly. This not only improves the convenience of the quick-change connector, but also extends its service life.

[0028] Working principle: when it is necessary to seal the inside of the joint body 1, the sealing plug 6 is pushed upward by the output end of the electric telescopic rod 5 until the sealing plug 6 is completely fitted inside the sealing ring 9, wherein the limiting ball 7 and the sealing ring 8 are also respectively fitted inside the sealing ring 9 to further seal the sealing plug 6 and the sealing ring 9, and the sealing ring 9 is fixed inside the fixing sleeve 10, and the fixing sleeve 10 is fixed inside the joint body 1, so that the sealing ring 9 can well seal the medicine inside the joint body 1, and then the first spring 11 is connected between the sealing plug 6 and the joint body 1, so that the first spring 11 can push the sealing plug 6, so as to fit more closely inside the sealing ring 9, thereby The effect of strengthening the seal inside the tube is achieved, the sealing performance of the quick-change joint is improved, and the safe use of the device is ensured. When the filling tube 15 needs to be disassembled, the pin 17 is pulled out so that the pin 17 no longer fixes the fixing seat 14 and the fixing ring 16. The filling tube 15 is then rotated so that the slider 22 can slide inside the filling tube 15. At the same time, the limit plate 21 pushes the card ball 20 to squeeze the second spring 19 inside the fixing block 18 until the slider 22 slides out of the filling tube 15 and the card ball 20 slides out of the limit plate 21, thereby achieving the effect of quickly disassembling the quick-change joint and the filling tube 15, improving the convenience of the quick-change joint and extending the service life of the quick-change joint.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-change connector for a closed filling device for oilfield chemicals, comprising a connector body (1), characterized in that: The connector body (1) is fixedly connected to a connecting pipe (2), the connecting pipe (2) is fixedly connected to a hose (3), the outer wall of the hose (3) is fixedly connected to a one-way valve (4), the connector body (1) is fixedly connected to an electric telescopic rod (5), the output end of the electric telescopic rod (5) is fixedly connected to a sealing plug (6), the outer wall of the sealing plug (6) is fixedly connected to a limiting ball (7), the outer wall of the sealing plug (6) is fixedly connected to a sealing ring (8), the outer wall of the sealing plug (6) is slidably connected to a sealing ring (9), and the limiting ball (7) is fixedly connected to the outer wall of the sealing plug (6). The outer walls of the positioning ball (7) and the sealing ring (8) are both slidably connected to the inside of the sealing ring (9); the outer wall of the sealing ring (9) is fixedly connected to a fixing sleeve (10); the outer wall of the fixing sleeve (10) is fixedly connected to the inside of the joint body (1); the outer wall of the electric telescopic rod (5) is sleeved with a first spring (11); one end of the first spring (11) is fixedly connected to the inside of the joint body (1); the other end of the first spring (11) is fixedly connected to the outer wall of the sealing plug (6); and the outer wall of the joint body (1) is provided with a connecting component.

2. The quick-change connector of the closed filling device for oilfield chemicals according to claim 1, characterized in that: The connection assembly comprises a flange ring (12), the interior of the flange ring (12) is fixedly connected to the outer wall of the joint body (1), and a positioning tube (13) is fixedly connected to the interior of the flange ring (12).

3. The quick-change connector of the closed filling device for oilfield chemicals according to claim 2 is characterized by: The outer wall of the positioning tube (13) is fixedly connected to a fixing seat (14), and the interior of the positioning tube (13) is slidably connected to a filling tube (15).

4. The quick-change connector of the closed filling device for oilfield chemicals according to claim 3 is characterized by: The outer wall of the filling pipe (15) is fixedly connected to a fixing ring (16), the interior of the fixing ring (16) is slidably connected to a latch (17), the outer wall of the latch (17) penetrates into the interior of the fixing seat (14), and the outer wall of the latch (17) is slidably connected to the interior of the positioning pipe (13).

5. The quick-change connector of the closed filling device for oilfield chemicals according to claim 4, characterized in that: A fixing block (18) is fixedly connected to the outer wall of the positioning tube (13), and a second spring (19) is arranged inside the fixing block (18).

6. The quick-change connector of the closed filling device for oilfield chemicals according to claim 5, characterized in that: One end of the second spring (19) is fixedly connected to the interior of the fixed block (18), and the other end of the second spring (19) is fixedly connected to a locking ball (20).

7. A quick-change connector for a closed filling device for oilfield chemicals according to claim 6, characterized in that: The outer wall of the fixing ring (16) is fixedly connected to the limiting plate (21), and the outer wall of the locking ball (20) is slidably connected to the inside of the limiting plate (21).

8. The quick-change connector of the closed filling device for oilfield chemicals according to claim 7, characterized in that: A slider (22) is fixedly connected to the interior of the positioning tube (13), and the outer wall of the slider (22) is slidably connected to the interior of the filling tube (15).

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