Filling device for gathering and transportation pipeline corrosion inhibitor
By designing a corrosion inhibitor injection device for gathering and transportation pipelines, suitable corrosion inhibitors are provided for both high-temperature and normal-temperature pipelines. The high-temperature corrosion inhibitor can be reused through a recovery tank and a filter assembly, which solves the problem of high cost of corrosion inhibitors in high-temperature environments and reduces maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-14
AI Technical Summary
Existing corrosion inhibitor dispensing equipment requires the use of large amounts of high-temperature resistant corrosion inhibitors in high-temperature environments, resulting in high costs. Furthermore, existing equipment fails to effectively utilize the recycling and reuse of high-temperature resistant corrosion inhibitors.
A filling device was designed, comprising a mixing tank for mixing corrosion inhibitors, a first storage tank for storing high-temperature corrosion inhibitors, and a second storage tank for storing conventional corrosion inhibitors. These tanks are connected to collection and transportation pipelines at different temperatures via three-way valves. Combined with a recovery tank and a filter assembly, the high-temperature corrosion inhibitors can be recovered and reused.
The amount of high-temperature corrosion inhibitor used was reduced, maintenance costs were decreased, and resource waste was reduced by recycling the high-temperature corrosion inhibitor.
Smart Images
Figure CN224121055U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of oil and gas gathering and transportation technology, specifically, it relates to a device for adding corrosion inhibitors to gathering and transportation pipelines. Background Technology
[0002] Gathering and transportation pipelines include pipelines connecting oil and gas wells to oil and gas processing plants and from oil and gas processing plants to oil and gas storage facilities. These pipelines have small diameters, low pressures, and are mostly made of steel pipes, primarily used for oil extraction, processing, transportation, and storage. Because the medium transported in these pipelines is crude oil, they require strong corrosion resistance and need to be flushed with corrosion inhibitors to slow down the aging process.
[0003] Corrosion inhibitor filling requires the use of corrosion inhibitor filling equipment. Existing corrosion inhibitor filling equipment has the following drawbacks: because the temperature of the gathering and transportation pipelines extending around some equipment (e.g., heating furnaces) is high, high-temperature resistant corrosion inhibitors are required to protect the gathering and transportation pipelines. Furthermore, because the arrangement length of the gathering and transportation pipelines is long, a large amount of high-temperature resistant corrosion inhibitors are required, resulting in high costs. Utility Model Content
[0004] One objective of this invention is to provide a device for adding corrosion inhibitors to gathering and transportation pipelines, so as to use different corrosion inhibitors to flush gathering and transportation pipelines that require high temperature resistance and conventional gathering and transportation pipelines, thereby avoiding the use of large quantities of expensive high temperature corrosion inhibitors and reducing maintenance costs.
[0005] According to this utility model, a device for adding corrosion inhibitors to gathering and transportation pipelines is provided, comprising: a stirring tank for mixing and stirring corrosion inhibitors, a first storage tank connected to the stirring tank and storing high-temperature resistant corrosion inhibitors inside, and a second storage tank connected to the stirring tank and storing conventional corrosion inhibitors inside. The bottom opening of the stirring tank is connected to the first end of a three-way valve, and the other two ends of the three-way valve are respectively connected to the first gathering and transportation pipeline and the second gathering and transportation pipeline.
[0006] In a preferred embodiment, the device for adding corrosion inhibitor to the gathering and transportation pipeline includes: a recovery tank connected to the second gathering and transportation pipeline via a recovery pipeline, the recovery tank being used to recover the high-temperature corrosion inhibitor, the recovery pipeline being provided with a filter assembly for filtering the high-temperature corrosion inhibitor near the recovery tank, the recovery tank being connected to the stirring tank via a return pipeline, and a return pump being provided on the return pipeline.
[0007] In a preferred embodiment, the filtration assembly includes a connecting pipe fitted around the periphery of the recovery pipe and a filter screen and an adsorption element disposed inside the connecting pipe.
[0008] In a preferred embodiment, the other two ends of the three-way valve are connected to the first gathering and transportation pipeline and the second gathering and transportation pipeline respectively via a first connecting pipe and a second connecting pipe.
[0009] In a preferred embodiment, both the first connecting pipe and the second connecting pipe are equipped with pipe pumps.
[0010] In a preferred embodiment, the first storage tank is connected to the mixing tank via a first conveying mechanism, and the second storage tank is connected to the mixing tank via a second conveying mechanism.
[0011] In a preferred embodiment, both the first and second feeding mechanisms are auger screw feeding mechanisms.
[0012] In a preferred embodiment, the mixing tank is mounted on a frame, and the four bottom corners of the mixing tank are in contact with weighing sensors fixedly mounted on the frame.
[0013] In a preferred embodiment, the mixing tank includes: a tank body and a stirring rod rotatably disposed inside the tank body, wherein a motor connected to the stirring rod and used to drive the stirring rod to rotate is disposed on the top of the tank body.
[0014] In a preferred embodiment, the top of the mixing tank is connected to a water inlet pipe, which is connected to an external water source.
[0015] This utility model has at least the following technical effects:
[0016] According to this utility model, a mixing tank for mixing corrosion inhibitors, a first storage tank connected to the mixing tank and storing a high-temperature resistant corrosion inhibitor, and a second storage tank connected to the mixing tank and storing a conventional corrosion inhibitor are provided. Since the bottom opening of the mixing tank is connected to the first end of a three-way valve, and the other two ends of the three-way valve are respectively connected to the first and second gathering and conveying pipelines, different corrosion inhibitors can be used to flush the gathering and conveying pipes requiring high temperatures and the conventional gathering and conveying pipes, avoiding the use of large quantities of expensive high-temperature resistant corrosion inhibitors and thus reducing maintenance costs. Attached Figure Description
[0017] Figure 1 A schematic diagram of the overall structure of a device for injecting corrosion inhibitors into a gathering and transportation pipeline according to an embodiment of the present invention is shown.
[0018] In this application, all the accompanying drawings are schematic drawings, used only to illustrate the principle of the present invention, and are not drawn to scale. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of the utility model, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0021] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] like Figure 1 As shown, the filling device 100 for corrosion inhibitors in gathering and transportation pipelines according to this utility model includes: a mixing tank 6 for mixing and stirring the corrosion inhibitor, a first storage tank 1 connected to the mixing tank 6 and storing a high-temperature resistant corrosion inhibitor inside, and a second storage tank 2 connected to the mixing tank 6 and storing a conventional corrosion inhibitor inside. The bottom opening of the mixing tank 6 is connected to the first end of a three-way valve 8, and the other two ends of the three-way valve 8 are respectively connected to a first gathering and transportation pipeline (not shown in the figure) and a second gathering and transportation pipeline 11. The temperature of the environment where the second gathering and transportation pipeline 11 is located is different from the temperature of the environment where the first gathering and transportation pipeline is located. For example, the environment where the first gathering and transportation pipeline is located is a conventional environment, and the second gathering and transportation pipeline 11 is a gathering and transportation pipeline located around equipment such as a heating furnace, where the pipeline needs to be maintained with a high-temperature resistant corrosion inhibitor. In addition, it should be noted that in this utility model, "high temperature" refers to a temperature higher than the conventional temperature.
[0023] The working principle of the corrosion inhibitor injection device 100 for gathering and transportation pipelines described in this utility model is briefly described below. When performing corrosion inhibitor maintenance on conventional gathering and transportation pipelines, conventional corrosion inhibitor is added to the mixing tank 6 through the second storage tank 2 and mixed with water. After mixing, the mixture enters the conventional gathering and transportation pipeline through the three-way valve 8. When performing corrosion inhibitor maintenance on high-temperature resistant pipes 11, high-temperature resistant corrosion inhibitor is added to the mixing tank 6 through the first storage tank 1 and mixed with water. After mixing, the mixture enters the second gathering and transportation pipeline 11 through the three-way valve 8.
[0024] According to this utility model, a mixing tank 6 for mixing corrosion inhibitors, a first storage tank 1 connected to the mixing tank 6 and storing a high-temperature resistant corrosion inhibitor, and a second storage tank 2 connected to the mixing tank 6 and storing a conventional corrosion inhibitor are provided. Since the bottom opening of the mixing tank 6 is connected to the first end of a three-way valve 8, and the other two ends of the three-way valve 8 are respectively connected to the first and second gathering pipelines 11, different corrosion inhibitors can be used to flush the gathering pipelines requiring high temperatures and the conventional gathering pipelines, avoiding the use of large quantities of expensive high-temperature resistant corrosion inhibitors and thus reducing maintenance costs.
[0025] In one or more embodiments, the filling device 100 for corrosion inhibitor in a gathering and transportation pipeline according to the present invention further includes: a recovery tank 12 connected to the second gathering and transportation pipeline 11 via a recovery pipe a, the recovery tank 12 being used to recover the high-temperature corrosion inhibitor, the recovery pipe being provided with a filter assembly 13 for filtering the high-temperature corrosion inhibitor near the recovery tank 12, the recovery tank 12 being connected to the mixing tank 6 via a return pipe, and a return pump 14 being provided on the return pipe, the return pump 14 being used to transport the high-temperature corrosion inhibitor inside the recovery tank 12 to the mixing tank 6.
[0026] According to this utility model, by setting up a recycling tank 12, the high-temperature corrosion inhibitor can be recycled and reused. Since most of the gathering and transportation pipelines have relatively few impurities, the high-temperature corrosion inhibitor after rinsing can still be reused. The high-temperature corrosion inhibitor after rinsing is filtered by the filter assembly 13 and introduced into the recycling tank 12, and then transported to the mixing tank 6 by the return pump 14. The high-temperature corrosion inhibitor can be reused for the second time, which can reduce the amount of high-temperature corrosion inhibitor used.
[0027] In one or more embodiments, the filter assembly 13 includes a connecting pipe sleeved around the periphery of the recovery pipe a and a filter screen (not shown) and an adsorption element (not shown) disposed inside the connecting pipe. The filter screen is used to filter large particulate impurities in the high-temperature corrosion inhibitor. Optionally, the adsorption element is a magnet block with multiple arc-shaped through holes on its main body. When the high-temperature corrosion inhibitor passes through the arc-shaped through holes, the fine iron filings therein are adsorbed onto the magnet block, thereby improving the impurity removal effect.
[0028] In one or more embodiments, the other two ends of the three-way valve 8 are connected to the first gathering pipeline and the second gathering pipeline 11 via the first connecting pipeline 3 and the second connecting pipeline 9, respectively. The first connecting pipeline 3 is used to transport conventional corrosion inhibitors that are not resistant to high temperatures, and the second connecting pipeline 9 is used to transport corrosion inhibitors that are resistant to high temperatures.
[0029] In one or more embodiments, a pipeline pump 10 is provided on both the first connecting pipe 3 and the second connecting pipe 9.
[0030] In one or more embodiments, the first storage tank 1 is connected to the mixing tank 6 via a first conveying mechanism. The second storage tank 2 is connected to the mixing tank 6 via a second conveying mechanism. Both the first and second conveying mechanisms can be auger screw conveyors. In other embodiments, if the bottom of the first storage tank 1 and the second storage tank 2 is higher than the mixing tank 6, then the first storage tank 1 and the second storage tank 2 are directly connected to the mixing tank 6 via pipes, and solenoid valves are installed on the pipes to control material discharge.
[0031] In one or more embodiments, the mixing tank 6 is disposed on the frame 4, and the four bottom corners of the mixing tank 6 are in contact with the weighing sensors 5 fixedly installed on the frame 4. The weighing sensors 5 are used to weigh the mixing tank 6. The weighing sensors 5 can accurately display the weight change of the mixing tank 6 so as to control the amount and achieve accurate ingredient dispensing.
[0032] In one or more embodiments, the mixing tank 6 includes: a tank body and a stirring rod (not shown) rotatably disposed inside the tank body, and a motor connected to the stirring rod and used to drive the stirring rod to rotate is disposed on the top of the tank body.
[0033] In one or more embodiments, the top of the mixing tank 6 is connected to a water inlet pipe 7, which is connected to an external water source for mixing the corrosion inhibitor.
[0034] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A device for adding corrosion inhibitors to gathering and transportation pipelines, characterized in that, include: A mixing tank for mixing corrosion inhibitors, a first storage tank connected to the mixing tank and storing a high-temperature corrosion inhibitor inside, and a second storage tank connected to the mixing tank and storing a conventional corrosion inhibitor inside, wherein the bottom opening of the mixing tank is connected to the first end of a three-way valve, and the other two ends of the three-way valve are respectively connected to the first and second gathering and conveying pipelines.
2. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 1, characterized in that, include: A recovery tank is connected to the second collection and transportation pipeline via a recovery pipeline. The recovery tank is used to recover high-temperature corrosion inhibitors. The recovery pipeline is equipped with a filter assembly for filtering the high-temperature corrosion inhibitors near the recovery tank. The recovery tank is connected to the stirring tank via a return pipeline, and a return pump is installed on the return pipeline.
3. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 2, characterized in that, The filtration assembly includes a connecting pipe sleeved around the periphery of the recovery pipe and a filter screen and adsorption element disposed inside the connecting pipe.
4. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 1 or 2, characterized in that, The other two ends of the three-way valve are connected to the first gathering and transportation pipeline and the second gathering and transportation pipeline respectively through the first connecting pipe and the second connecting pipe.
5. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 4, characterized in that, Both the first connecting pipe and the second connecting pipe are equipped with pipe pumps.
6. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 1 or 2, characterized in that, The first storage tank is connected to the mixing tank via a first conveying mechanism, and the second storage tank is connected to the mixing tank via a second conveying mechanism.
7. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 6, characterized in that, Both the first and second material conveying mechanisms are auger spiral feeding mechanisms.
8. The device for adding corrosion inhibitors to gathering and transportation pipelines according to any one of claims 1 to 7, characterized in that, The mixing tank is mounted on the frame, and the four bottom corners of the mixing tank are in contact with the weighing sensors fixedly mounted on the frame.
9. The device for adding corrosion inhibitors to gathering and transportation pipelines according to claim 1 or 2, characterized in that, The mixing tank includes: a tank body and a stirring rod rotatably disposed inside the tank body, and a motor connected to the stirring rod and used to drive the stirring rod to rotate is disposed on the top of the tank body.
10. The device for adding corrosion inhibitor to gathering and transportation pipelines according to claim 9, characterized in that, The mixing tank is connected to a water inlet pipe at the top, which is connected to an external water source.