Device for detecting gas content of flowback brine of salt cavern gas storage
By designing a sampler and gas collector for detecting the gas content of brine returned from a salt cavern gas storage facility, the problem of inaccurate detection in existing technologies has been solved. This achieves the separation and accurate measurement of gas and liquid, reduces operating costs and reading errors, and extends the lifespan of the device.
Patent Information
- Application Number
- CN202520264768.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing technologies lack efficient and accurate devices for detecting the gas content of brine returned from salt cavern gas storage facilities, resulting in inaccurate measurement of the brine discharge pipeline and increasing the cost of subsequent processes.
A device comprising a sampler and a gas collector is designed. The sampler includes a piston assembly, a sampler body, a first liquid inlet pipe, a liquid outlet pipe, and a connecting pipe. The gas collector includes a bottled gas collector, a second liquid inlet pipe, a water injection pipe, and a liquid outlet pipe. Through a sealed design and precise metering scale, the separation and accurate metering of gas and liquid are achieved.
It achieves airtight gas storage, reduces the risk of gas escape, simplifies the operation process, reduces costs, and reduces reading errors through visual design, adapts to the corrosive environment of brine, and extends the life of the device.
Smart Images
Figure CN223581505U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of salt cavern gas storage nitrogen resistance dissolving cavity, specifically relates to a device for detecting salt cavern gas storage return and discharge brine gas content. BACKGROUND
[0002] The salt cavern gas storage is formed by dissolving salt rock or salt dome in the ground by using water solution method, that is, by drilling to inject clean water to dissolve salt rock to produce brine, and by injecting roof protection liquid to control the shape of the solution cavity.
[0003] The common resistance dissolving methods include kerosene resistance dissolving and nitrogen resistance dissolving, but kerosene has the disadvantages of high cost and serious environmental pollution as the resistance dissolving medium of the salt cavern gas storage, and nitrogen has been used as the resistance dissolving agent in China.
[0004] At present, it is found in the nitrogen resistance dissolving process that the return and discharge brine contains a large amount of gas (mainly nitrogen), which leads to inaccurate measurement of the brine pipeline, increases the cost of the subsequent process flow, so it is very important to obtain the gas content of the return and discharge brine in time and accurately, and the existing technology lacks efficient and accurate gas content detection devices, and a safe and reliable and simple-to-operate solution is urgently needed. UTILITY MODEL CONTENTS
[0005] In order to solve the problem of lacking efficient and accurate gas content detection devices in the prior art, the utility model provides a device for detecting salt cavern gas storage return and discharge brine gas content, which comprises a sampler and a gas collector.
[0006] The sampler comprises a piston assembly, a sampler body, a first liquid inlet pipe, a liquid outlet pipe and a communication pipe, the inside of the sampler body is provided with a cavity, the piston assembly extends into the sampler body and can move in the cavity of the sampler body, the first liquid inlet pipe is arranged on the side away from the piston assembly and communicates with the sampler body, the liquid outlet pipe is arranged at the bottom of the sampler body and communicates with the sampler body, and the communication pipe is arranged on the side close to the first liquid inlet pipe and communicates with the sampler body.
[0007] The gas collector comprises a bottled gas collector, a second liquid inlet pipe, a water injection pipe and a liquid outlet pipe, the top of the bottled gas collector communicates with the top of the sampler body through the second liquid inlet pipe, the bottled gas collector is provided with an accurate measurement scale, the water injection pipe is arranged at the top of the bottled gas collector, and the end of the liquid outlet pipe extends to the bottom of the gas collector.
[0008] According to some embodiments of the present application, a device for detecting salt cavern gas storage return and discharge brine gas content is provided, one side of the sampler body provided with the piston assembly is open, and the piston assembly comprises a piston, a piston rod and a piston handle.
[0009] The piston is fixedly connected with the piston handle through a piston rod, the piston is arranged in the sampler body, and the piston handle can control movement of the piston in the sampler body.
[0010] The device for detecting gas content of brine returned from a salt cavern gas storage provided by some embodiments of the present application further comprises a first valve arranged on the first liquid inlet pipe.
[0011] The device for detecting gas content of brine returned from a salt cavern gas storage provided by some embodiments of the present application further comprises a second valve arranged on the liquid outlet pipe.
[0012] The device for detecting gas content of brine returned from a salt cavern gas storage provided by some embodiments of the present application further comprises a pressure relief valve arranged on the second liquid inlet pipe.
[0013] The device for detecting gas content of brine returned from a salt cavern gas storage provided by some embodiments of the present application further comprises a third valve arranged on the water injection pipe.
[0014] The device for detecting gas content of brine returned from a salt cavern gas storage provided by some embodiments of the present application further comprises a fourth valve arranged on the liquid outlet pipe.
[0015] The device has the advantages that:
[0016] The device has the advantages that:
[0017] The device has the advantages that: The device has the advantages that:
[0018] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-restrictive embodiments made with reference to the attached drawings:
[0019] Fig. 1 is a schematic diagram of the overall structure of some embodiments of the present application;
[0020] Fig. 2 is a schematic diagram of the sampler body structure of some embodiments of the present application;
[0021] Fig. 3is a schematic diagram of a bottled gas collector structure of some embodiments of the present application.
[0022] In the figure: 1, sampler body; 2, first liquid inlet pipe; 3, first valve; 4, piston; 5, piston rod; 6, piston handle; 7, liquid outlet pipe; 8, second valve; 9, communication pipe; 10, pressure relief valve; 11, second liquid inlet pipe; 12, third valve; 13, water injection pipe; 14, fourth valve; 15, liquid outlet pipe; 16, bottled gas collector. DETAILED DESCRIPTION
[0023] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the relevant utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description.
[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0025] As shown in the Figs. 1-3 The utility model provides a device for detecting the gas content of the brine produced in a salt cavern gas storage, comprising a sampler and a gas collector.
[0026] The sampler comprises a piston assembly, a sampler body 1, a first liquid inlet pipe 2, a liquid outlet pipe 7, and a communication pipe 9. The sampler body 1 has a cavity inside. The piston assembly extends into the sampler body 1 and can move in the cavity of the sampler body 1. The first liquid inlet pipe 2 is arranged on the side away from the piston assembly and communicates with the sampler body 1. The liquid outlet pipe 7 is arranged at the bottom of the sampler body 1 and communicates with the sampler body 1. The communication pipe 9 is arranged on the side close to the first liquid inlet pipe 2 and communicates with the sampler body 1.
[0027] The gas collector comprises a bottled gas collector 16, a second liquid inlet pipe 11, a water injection pipe 13, and a liquid outlet pipe 15. The top of the bottled gas collector 16 communicates with the top of the sampler body 1 through the second liquid inlet pipe 11. The bottled gas collector 16 is provided with an accurate metering scale. The water injection pipe 13 is arranged at the top of the bottled gas collector 16. The end of the liquid outlet pipe 15 extends to the bottom of the gas collector.
[0028] In some embodiments, the side of the sampler body 1 where the piston assembly is arranged is open. The piston assembly comprises a piston 4, a piston rod 5, and a piston handle 6.
[0029] The piston 4 is fixedly connected to the piston handle 6 through the piston rod 5. The piston 4 is arranged in the sampler body 1. The piston handle 6 can control the movement of the piston 4 in the sampler body 1.
[0030] In some embodiments, the first valve 3 is arranged on the first liquid inlet pipe 2, the second valve 8 is arranged on the liquid outlet pipe 7, the pressure relief valve 10 is arranged on the second liquid inlet pipe 11, the third valve is arranged on the water injection pipe 13, and the fourth valve 14 is arranged on the liquid outlet pipe 15.
[0031] In specific implementation, the sampler body 1 is provided with a piston 4 for controlling the amount of liquid entering the cavity and isolating the sample from the air to prevent the gas dissolved in the brine from escaping into the air. The piston 4 is connected with a piston rod 5 and a piston handle 6. The sampler body 1 is connected with the first liquid inlet pipe 2, which is threadedly connected with the on-site liquid outlet pipe during use. The first liquid inlet pipe 2 is provided with the first valve 3 for controlling the amount of liquid and the opening and closing of the first liquid inlet pipe 2. Before sampling, the water injection pipe 13 is used to inject water into the bottle-type gas collector 16. The water injection pipe 13 is provided with the third valve 12. After the liquid enters the sampler body 1 through the first liquid inlet pipe 2, the piston 4 is pushed to the left and stored in the sampler body 1. The gas contained in the brine in the sampler body 1 enters the bottle-type gas collector 16 through the second liquid inlet pipe 11. The second liquid inlet pipe 11 is provided with the pressure relief valve 10, which automatically discharges gas when the pressure in the pipe is too high, thereby ensuring the safety of the device. The gas enters the bottle-type gas collector 16, and the water therein is discharged through the liquid outlet pipe 15. The liquid outlet pipe 15 is provided with the fourth valve 14 for controlling the amount of water.
[0032] In some embodiments, the process of detecting the gas content of the on-site flowback brine is as follows: all valves are closed at the beginning of the detection, the piston 4 is pressed to the rightmost position of the sampler body 1, the third valve 12 is opened to inject water into the bottle-type gas collector 16 through the water injection pipe 13, then the third valve 12 is closed, the first liquid inlet pipe 2 is threadedly connected with the on-site liquid outlet pipe, the first valve 3 is opened, the sample enters the sampler body 1 and pushes the piston 4 to the left, the first valve 3 is closed when the liquid level reaches about 2 / 3 of the height of the communication pipe 9, the fourth valve 14 is opened, the gas contained in the brine enters the bottle-type gas collector 16 through the second liquid inlet pipe 11, and the water therein is discharged through the liquid outlet pipe 15. The piston 4 in the sampler body 1 is pressed, and the liquid level in the communication pipe 9 is observed to rise to the highest position. After the reading is stable, the reading is 189 mL. The third valve 12 and the fourth valve 14 are closed, the first valve 3 and the second valve 8 are opened, the liquid is discharged and the volume is measured to be 1435 mL, and the gas content of the sample is calculated to be 13.2%.
[0033] In some embodiments, the field flowback brine gas content detection process: all valves are closed when starting detection, the piston 4 is pressed to the rightmost of the sampler body 1, the third valve 12 is opened to fill the water in the bottled gas collector 16 through the water injection pipe 13, and then the third valve 12 is closed. The first liquid inlet pipe 2 is connected with the field liquid outlet pipe through threads, the first valve 3 is opened, the sample enters the sampler body 1 and the piston 4 is pushed to the left, the first valve 3 is closed when the liquid level reaches about 2 / 3 of the height of the communication pipe 9, the fourth valve 14 is opened, the gas contained in the brine enters the bottled gas collector 16 through the second liquid inlet pipe 11, and the water in the bottled gas collector 16 is discharged through the liquid outlet pipe 15. The piston 4 in the sampler body 1 is pressed, the liquid level in the communication pipe 9 is observed to rise to the highest position, and the reading is 187 mL after the reading is stable. The third valve 12 and the fourth valve 14 are closed, the first valve 3 and the second valve 8 are opened, the liquid is discharged and the volume is measured to be 1176 mL, and the gas content of the sample is calculated to be 15.9%.
[0034] In specific implementation, according to different use needs, samplers and bottled gas collectors of different volumes can be made, and the device must be checked for air tightness before use, the communication pipe 9 and the bottled gas collector 16 must be visualized to facilitate observation of the liquid level and reading of data, and corrosion-resistant materials are selected for the pipes, the sampler body 1 and the cavity valve when they are made, and the flowback brine has certain corrosiveness, so that the use life of the device can be prolonged by using corrosion-resistant materials such as 304, 316 and 321 stainless steel.
[0035] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and is not indicative or suggestive of the device or element having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and "third" are only for descriptive purposes and cannot be understood as indicative or suggestive of relative importance.
[0036] In addition, it also needs to be explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0037] The term "comprising" or any other similar word is intended to encompass the inclusion of one or more steps, features, or elements but not to the exclusion of any other steps, features, or elements. The term "comprising" therefore indicates that the inclusion of one or more steps, features, or elements is not a requirement and that other steps, features, or elements can also be included.
[0038] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings, but those skilled in the art will readily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the relevant technical features without deviating from the principles of the present application, and the technical solutions after these changes or replacements will all fall within the protection scope of the present application.
Claims
1. A device for detecting the gas content in brine returned from a salt cavern gas storage facility, characterized in that, Includes a sampler and a gas collector; The sampler includes a piston assembly, a sampler body (1), a first inlet pipe (2), a drain pipe (7), and a connecting pipe (9). The sampler body (1) has an internal cavity. The piston assembly extends into the sampler body (1) and can move within the cavity of the sampler body (1). The first inlet pipe (2) is located on the side away from the piston assembly and is connected to the sampler body (1). The drain pipe (7) is located at the bottom of the sampler body (1) and is connected to the sampler body (1). The connecting pipe (9) is located on the side close to the first inlet pipe (2) and is connected to the sampler body (1). The gas collector includes a bottled gas collector (16), a second liquid inlet pipe (11), a water injection pipe (13), and a liquid outlet pipe (15). The top of the bottled gas collector (16) is connected to the top of the sampler body (1) through the second liquid inlet pipe (11). The bottled gas collector (16) is equipped with a precise metering scale. The water injection pipe (13) is located at the top of the bottled gas collector (16), and the end of the liquid outlet pipe (15) extends to the bottom of the gas collector.
2. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, The sampler body (1) has an open side with a piston assembly, which includes a piston (4), a piston rod (5) and a piston handle (6). The piston (4) is fixedly connected to the piston handle (6) via the piston rod (5). The piston (4) is located inside the sampler body (1). The piston handle (6) can control the movement of the piston (4) inside the sampler body (1).
3. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, It also includes a first valve (3), which is installed on the first inlet pipe (2).
4. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, It also includes a second valve (8), which is installed on the drain pipe (7).
5. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, It also includes a pressure relief valve (10), which is installed on the second inlet pipe (11).
6. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, It also includes a third valve (12), which is installed on the water injection pipe (13).
7. A device for detecting the gas content of brine returned from a salt cavern gas storage tank according to claim 1, characterized in that, It also includes a fourth valve (14), which is located on the outlet pipe (15).