Connecting assembly for reducing chemical residues of chemical feeding pipeline

Abstract

The utility model relates to the technical field of offshore oil fields, in particular to a connecting assembly for reducing chemical residues of a chemical feeding pipeline, which comprises a diaphragm pump, a three-way joint pipe and a plurality of hard pipes, the plurality of hard pipes are all connected with a chemical feeding port of a main body tank, and the plurality of hard pipes respectively add different chemicals into the main body tank. And a quick connector II is fixedly mounted at one end of each hard pipe. According to the connecting assembly for reducing the drug residues of the dosing pipeline, firstly, a corresponding connector II at the upper end of a three-way connector pipe is connected with a quick connector II at the bottom end of a corresponding hard pipe, drugs are conveyed into a main body tank by starting a diaphragm pump, after one kind of drug is conveyed, a branch discharge port is opened firstly, and then the other kind of drug is discharged; the residual medicament in the hard pipe and the three-way joint pipe is completely discharged, and then the three-way joint pipe is detached from the hard pipe, so that the situation that the residual medicament in the quick connector II flows out, pollutes a deck and is easy to drop on the skin of an operator, and the field workload and the working risk are increased can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore oil fields, in particular to a connection component for reducing residual medicines in a dosing pipeline. Background Art

[0002] Most offshore oilfields are designed with independent chemical injection systems, with the chemical tanks and pumps installed as a skid-mounted system. For platforms where gravity-fed dosing is not feasible, most use a diaphragm pump coupled with a hose.

[0003] The most common chemicals used are defoamers, demulsifiers, corrosion inhibitors, antiscalants, biocides, and water purifiers. When using a diaphragm pump to add chemicals, they are introduced into the dosing port on the tank roof. Most dosing ports are connected from the tank roof to 2-inch pipelines extending vertically downward from the edge of the chemical skid. Each pipeline is equipped with a 2-inch quick-acting ball valve and quick connector.

[0004] Since the connection between the hard pipe and the soft pipe is a vertical pipe, the purge after adding the medicine is not thorough. Every time the quick connector is removed, residual medicine flows out, contaminating the deck and easily dripping on the operator's skin, increasing the workload on site and the work risk.

[0005] To this end, we propose a connection component for reducing residual reagents in the dosing pipeline to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a connection assembly for reducing residual medicine in a medicine-dosing pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A connection assembly for reducing residual medicine in a dosing pipeline comprises a diaphragm pump, a three-way joint pipe and multiple hard pipes, the multiple hard pipes are all connected to the dosing port of a main tank, the multiple hard pipes respectively add different medicines into the main tank, one end of each hard pipe is fixedly installed with a quick connector 2, the feed end of the diaphragm pump is fixedly connected to a hose 1, the diaphragm pump is connected to the medicine tank through the hose 1, the discharge end of the diaphragm pump is fixedly connected to the hose 2, one end of the hose 2 is fixedly installed with a quick connector 1, the left end of the three-way joint pipe is fixedly connected to a corresponding connector 1, the corresponding connector 1 matches the quick connector 1, the upper end of the three-way joint pipe is fixedly connected to a corresponding connector 2, the corresponding connector 2 matches the quick connector 2, and the right end of the three-way joint pipe is fixedly connected to a discharge outlet.

[0009] Preferably, the inner walls of the tee joint pipe and the hard pipe are coated with a corrosion-resistant coating.

[0010] Preferably, a control ball valve is provided on the sub-discharge port to control the switch of the sub-discharge port and discharge excess medicine inside the three-way joint pipe.

[0011] Preferably, each hard tube is provided with a quick ball valve for controlling the internal communication of the hard tube.

[0012] Preferably, the medicine tank and the diaphragm pump are integrally installed on the platform by skid mounting.

[0013] Compared with the prior art, the present invention provides a connection assembly for reducing residual medicine in a dosing pipeline, which has the following beneficial effects:

[0014] The connection assembly for reducing residual medicine in the medicine-dosing pipeline first connects the corresponding joint 2 at the upper end of the three-way joint pipe with the quick connector 2 at the bottom end of the corresponding hard pipe, and then starts the diaphragm pump to deliver medicine to the interior of the main tank. After the delivery of one medicine is completed, the sub-discharge port is first opened to discharge the remaining medicine in the hard pipe and the three-way joint pipe, and then the three-way joint pipe is removed from the hard pipe. This can effectively prevent the residual medicine in the quick connector 2 from flowing out, contaminating the deck and easily dripping on the operator's skin, thereby increasing on-site workload and work risks. The connection assembly has a simple structure and strong versatility, which is conducive to improving on-site work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0017] Figure 3 This is a schematic diagram of the three-way joint pipe structure of the utility model.

[0018] In the figure: 1. Chemical tank; 2. Hose 1; 3. Diaphragm pump; 4. Hose 2; 5. Quick connector 1; 6. Corresponding connector 1; 7. Three-way connector pipe; 8. Corresponding connector 2; 9. Discharge outlet; 10. Hard pipe; 11. Quick ball valve; 12. Quick connector 2. DETAILED DESCRIPTION

[0019] See also Figure 1-3A connection assembly for reducing residual medicine in the dosing line includes a diaphragm pump 3, a three-way joint pipe 7 and multiple hard pipes 10. The multiple hard pipes 10 are connected to the dosing port of the main tank. The multiple hard pipes 10 add different medicines to the inside of the main tank respectively. The hard pipes 10 are usually provided with five, which are used to add defoaming agent, demulsifier, corrosion inhibitor, antiscalant, bactericide and water purifier to the inside of the main tank respectively. One end of the hard pipe 10 is fixedly installed with a quick connector 12. The feed end of the diaphragm pump 3 is fixedly connected with Hose 1 2, the diaphragm pump 3 is connected to the medicine tank 1 through the hose 1 2, the discharge end of the diaphragm pump 3 is fixedly connected to the hose 2 4, one end of the hose 2 4 is fixedly installed with a quick connector 1 5, the left end of the three-way joint pipe 7 is fixedly connected to the corresponding connector 1 6, the corresponding connector 1 6 matches the quick connector 1 5, the upper end of the three-way joint pipe 7 is fixedly connected to the corresponding connector 2 8, the corresponding connector 2 8 matches the quick connector 2 12, and the right end of the three-way joint pipe 7 is fixedly connected to the discharge port 9;

[0020] When using the device, first connect the corresponding connector 2 8 at the upper end of the three-way joint pipe 7 to the quick connector 2 12 at the bottom end of the corresponding hard pipe 10, and start the diaphragm pump 3 to deliver medicine to the interior of the main tank. After the delivery of one medicine is completed, first open the sub-discharge port 9 to discharge the remaining medicine in the hard pipe 10 and the three-way joint pipe 7, and then remove the three-way joint pipe 7 from the hard pipe 10. This can effectively prevent the residual medicine in the quick connector 2 12 from flowing out, contaminating the deck and easily dripping on the operator's skin, increasing the workload and work risks on site.

[0021] Furthermore, the inner walls of the three-way joint pipe 7 and the hard pipe 10 are coated with a corrosion-resistant coating to increase the service life of the device.

[0022] Furthermore, a control ball valve is provided on the sub-discharge port 9 for controlling the switch of the sub-discharge port 9 to discharge excess medicine inside the three-way joint pipe 7 .

[0023] Furthermore, each hard tube 10 is provided with a quick ball valve 11 for controlling the internal communication of the hard tube 10 .

[0024] Furthermore, the medicine tank 1 and the diaphragm pump 3 are both installed on the platform as a whole by skid mounting, thereby improving the stability of the device.

[0025] Working principle: The connection component for reducing the residual agent in the dosing pipeline first connects the corresponding connector 2 8 at the upper end of the three-way joint pipe 7 with the quick connector 2 12 on the bottom end of the corresponding hard pipe 10, and starts the diaphragm pump 3 to deliver the drug to the inside of the main tank. After the delivery of one drug is completed, first open the discharge port 9 to discharge the remaining drug inside the hard pipe 10 and the three-way joint pipe 7, and then remove the three-way joint pipe 7 from the hard pipe 10. This can effectively prevent the residual agent inside the quick connector 2 12 from flowing out, contaminating the deck and easily dripping on the operator's skin, increasing the workload and work risks on site. The connection component has a simple structure and strong versatility, which is conducive to improving work efficiency on site.

Claims

1. A connection assembly for reducing residual medicine in a dosing line, comprising a diaphragm pump (3), a three-way joint pipe (7) and a plurality of hard pipes (10), wherein the plurality of hard pipes (10) are connected to the dosing port of a main tank, and the plurality of hard pipes (10) respectively add different medicines into the main tank, and one end of each of the hard pipes (10) is fixedly mounted with a quick connector (12), characterized in that: The feed end of the diaphragm pump (3) is fixedly connected to a hose (2), and the diaphragm pump (3) is connected to the medicine tank (1) through the hose (2). The discharge end of the diaphragm pump (3) is fixedly connected to a hose (4), and one end of the hose (4) is fixedly installed with a quick connector (5). The left end of the three-way joint pipe (7) is fixedly connected to a corresponding connector (6), and the corresponding connector (6) matches the quick connector (5). The upper end of the three-way joint pipe (7) is fixedly connected to a corresponding connector (8), and the corresponding connector (8) matches the quick connector (12). The right end of the three-way joint pipe (7) is fixedly connected to a discharge outlet (9).

2. A connection assembly for reducing residual drug in a dosing line according to claim 1, characterized in that: The inner walls of the three-way joint pipe (7) and the hard pipe (10) are both coated with a corrosion-resistant coating.

3. The connection assembly for reducing residual drug in a dosing line according to claim 1, characterized in that: The sub-discharge port (9) is provided with a control ball valve for controlling the opening and closing of the sub-discharge port (9) to discharge excess medicine from the three-way joint pipe (7).

4. The connection assembly for reducing residual drug in a dosing line according to claim 1, characterized in that: The hard tubes (10) are each provided with a quick ball valve (11) for controlling the internal communication of the hard tubes (10).

5. The connection assembly for reducing residual drug in a dosing line according to claim 1, characterized in that: The medicine tank (1) and the diaphragm pump (3) are both integrally mounted on the platform by skid mounting.

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