Pipeline fluid sampling device

Abstract

The utility model discloses a pipeline fluid sampling device which comprises a tank body used for sampling and storing, a liquid inlet pipe arranged at the top of the tank body, a uniform distributor element arranged at the liquid outlet end of the liquid inlet pipe, a liquid discharge pipe arranged at the bottom of the tank body, a gas sampling pipe arranged on the top wall of the tank body, and a gas valve mechanism arranged on the gas sampling pipe and used for controlling on-off of fluid in the gas sampling pipe. An observation mechanism for observing the liquid level in the tank body is arranged on the side wall of the tank body; when pipeline sampling is carried out, other devices do not need to be replaced repeatedly for sampling, and petroleum sampling, water liquid sampling and gas sampling of the pipeline can be completed through the device; the uniform distributor is mounted at the liquid outlet of the liquid inlet pipe, so that liquid in the tank body is prevented from being directly impacted during liquid feeding, oil-water settling separation is prevented from being influenced, and the oil-gas-water separation speed and effect are improved; gas sampling detection can be directly carried out through the gas sampling pipe and the gas valve mechanism, separated petroleum or water can be sampled and detected through the liquid outlet pipe, the operation steps are simple, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a pipeline fluid sampling device. Background Art

[0002] During oil production and transportation, numerous pipelines are needed to transport and conduct oil. The parameters of media such as water, carbon dioxide, and hydrogen sulfide carried in the oil are related to the rate of pipeline corrosion. To control pipeline corrosion, the rate of pipeline corrosion must be slowed down as much as possible to prevent safety and environmental accidents caused by perforation and leakage due to pipeline corrosion. Therefore, it is necessary to strengthen pipeline management. Fluid samples should be taken from each pipeline to test for corrosion factors (hydrogen sulfide, carbon dioxide, sulfate-reducing bacteria, saprophytes, iron bacteria, etc.) to analyze pipeline corrosion factors and formulate effective anti-corrosion methods and measures.

[0003] Currently, every marine pipeline is tested weekly for hydrogen sulfide and sulfate-reducing bacteria, twice a week for carbon dioxide, every four weeks for dissolved oxygen, total iron, and pH, and every eight weeks for iron bacteria and saprophytes, not including any additional testing required on an ad hoc basis. The sampling process is extensive, demanding, and frequent.

[0004] Taking hydrogen sulfide detection as an example, using existing equipment to collect gas samples from marine pipelines requires two people to work together for about 40 minutes. The gas-liquid separation effect is poor, and gas samples cannot be obtained for a long time. The operation steps are cumbersome and inconvenient to use, so the entire operation requires a lot of man-hours to complete. In addition, the current pipeline sampling device is single and can only collect gas or oil and water separately. When sampling, it is necessary to change the equipment back and forth to collect gas, oil and water samples separately. Utility Model Content

[0005] The technical problem to be further solved by the present invention is to provide a pipeline inspection sampling device with a simple structure, easy operation, no need to change equipment back and forth to sample gas, oil and water separately, fast gas-liquid-water separation speed and good separation effect, and the ability to safely and efficiently complete the oil, gas and water sampling work of each submarine pipeline, thereby saving labor costs, greatly improving work efficiency, and shortening the average time of submarine pipeline sampling operations by 40%.

[0006] The technical solution is a pipeline fluid sampling device, comprising a tank body for sampling and storage, a liquid inlet pipe provided on the top of the tank body, a distributor element provided at the liquid outlet end of the liquid inlet pipe, a liquid discharge pipe provided at the bottom of the tank body, an air extraction pipe provided on the top wall of the tank body, and an air valve mechanism for controlling the flow of fluid in the air extraction pipe, and an observation mechanism for observing the liquid level inside the tank body provided on the side wall of the tank body.

[0007] Furthermore, in the pipeline fluid sampling device, the distributor element is preferably located at three-quarters of the tank body.

[0008] Furthermore, in the pipeline fluid sampling device, the distributor element preferably includes a disc plate, a fixing rod is installed on the top of the disc plate, and the disc plate is installed directly below the liquid outlet of the liquid inlet pipe through the fixing rod.

[0009] Furthermore, in the pipeline fluid sampling device, the disc plate is preferably circular in structure, the diameter of the disc plate is larger than the outer diameter of the liquid inlet pipe, and the disc plate is 1.5CM-2.0CM away from the liquid outlet of the liquid inlet pipe.

[0010] Furthermore, in the pipeline fluid sampling device, the disc plate preferably has a square structure, and the four corners of the disc plate have rounded structures.

[0011] Furthermore, in the pipeline fluid sampling device, the air valve mechanism preferably includes a mist collector element installed inside the air intake pipe, the air intake pipe is provided with an air intake valve element, the air intake pipe is opened with an air intake port, and the air intake pipe is connected with a detection component.

[0012] Furthermore, in the pipeline fluid sampling device, the detection component preferably includes a pressure tube arranged on the side wall of the air extraction pipe, and the pressure tube is connected to the air extraction pipe, and the pressure tube is provided with a pressure gauge element.

[0013] Furthermore, in the pipeline fluid sampling device, the observation mechanism preferably includes a liquid level gauge, the bottom of the liquid level gauge is connected to a connecting pipe, the connecting pipe is connected to the bottom end of the side wall of the tank body, the top of the liquid level gauge is connected to a flushing pipe, the flushing pipe is connected to the top end of the side wall of the tank body, and a liquid level flushing port is opened at the top of the flushing pipe.

[0014] Furthermore, in the pipeline fluid sampling device, the liquid inlet pipe is preferably provided with a liquid inlet valve element, and the liquid discharge pipe is preferably provided with a liquid discharge valve element.

[0015] Furthermore, in the pipeline fluid sampling device, preferably, the bottom wall of the tank body is provided with a base, and the bottom of the base is provided with a pulley element, the top wall of the tank body is symmetrically provided with handles, the bottom of the tank body is a hemispherical structure, and the tank body as a whole is a capsule-shaped structure, and sealing ring elements are provided between the tank body and the liquid inlet pipe and the liquid discharge pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When sampling the pipeline, the utility model does not need to replace other equipment back and forth for sampling. The utility model can complete the oil sampling, water sampling and gas sampling of the pipeline; a distributor is installed at the liquid outlet of the liquid inlet pipe to avoid direct impact on the liquid inside the tank during liquid inlet, which affects the oil-water sedimentation separation and improves the oil-gas-water separation speed and effect; gas sampling can be directly carried out for detection through the gas sampling pipe and the gas valve mechanism, and the separated oil or water can be sampled and detected through the liquid outlet pipe. The operation steps are simple, the use is convenient, and the work efficiency is greatly improved.

[0018] 2. The bottom of the tank body of the utility model is hemispherical, and the overall structure is designed as a capsule, which is convenient for emptying the liquid in the tank body without retaining any accumulated liquid, making it easier to clean and convert; a liquid level gauge is installed on the side wall of the tank body, which can easily observe the liquid level in the tank body and accurately operate the equipment to fill and discharge liquid; the inside of the tank body can be cleaned through the liquid inlet and liquid level flushing port, shortening the equipment replacement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 This is a schematic structural diagram of the pipeline fluid sampling device of the utility model from the first perspective.

[0021] Figure 2 It is a structural diagram of the uniform distributor element of the utility model.

[0022] Explanation of the numbers in the schematic diagram:

[0023] 1. Tank body; 11. Base; 12. Handle;

[0024] 2. Liquid inlet pipe; 21. Liquid inlet valve component;

[0025] 3. Distributor element;

[0026] 4. Drainage pipe; 41. Drainage valve component;

[0027] 5. Air intake pipe; 51. Mist catcher component; 52. Air intake valve component; 53. Air intake port; 54. Pressure pipe; 55. Pressure gauge component;

[0028] 6. Liquid level gauge; 61. Connecting pipe; 62. Flushing pipe; 63. Liquid level flushing port. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0030] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0032] Depend on Figures 1 to 2 A pipeline fluid sampling device is provided, comprising a tank body 1 for sampling and storage, a liquid inlet pipe 2 is provided on the top of the tank body 1, a distributor element 3 is provided at the liquid outlet end of the liquid inlet pipe 2, a liquid discharge pipe 4 is provided at the bottom of the tank body 1, an air extraction pipe 5 is provided on the top wall of the tank body 1, and the air extraction pipe 5 is provided with an air valve mechanism for controlling the flow of fluid in the air extraction pipe 5, and an observation mechanism for observing the liquid level inside the tank body 1 is provided on the side wall of the tank body 1.

[0033] Preferably, the liquid inlet pipe 2 is a 1 / 2OD tube, which is connected to the sampling interface of the oil pipeline through a 1 / 2OD hose, or the liquid inlet pipe 2 is plugged into the sampling interface of the oil pipeline. A clamping fixture is provided at the oil pipeline connection to secure the liquid inlet pipe 2, allowing the fluid medium inside the oil pipeline to flow into the liquid inlet pipe 2. The liquid discharge pipe 4 is a 1 / 2NPD tube. The use of 1 / 2OD and 1 / 2NPD tubes can achieve a large liquid volume and a fast flow rate, thus avoiding the problem of liquid solidification caused by the slow liquid flow rate due to the small inner diameter of the liquid inlet pipe 2 in winter.

[0034] It is also preferred that the petroleum liquid entering through the liquid inlet pipe 2 will fall onto the upper surface of the distributor element 3. When the petroleum liquid falls on the surface of the distributor element 3, it will cause a splashing effect. The petroleum liquid diffuses around the distributor element 3. Finally, the diffused petroleum liquid touches the inner wall of the tank body 1 and flows downward along the inner wall of the tank body 1, avoiding direct impact on the liquid separated inside the tank body 1, causing the originally separated oil and water liquids to be remixed together; at the same time, the splashed and diffused petroleum liquid increases the area and reduces the thickness, so that the gas inside the petroleum liquid is dissipated faster, thereby improving the gas extraction efficiency.

[0035] As described in the oil-water-gas separation, the petroleum liquid flowing into the tank body 1 relies on the density difference of oil, gas and water and utilizes the principle of gravity sedimentation to achieve oil, gas and water separation; and the device adds a distributor element 3 so that the petroleum liquid begins to settle and separate as soon as it enters the tank body 1. Even if petroleum liquid continues to be added, it will not interfere with the already settled and separated liquid.

[0036] Depend on Figure 2 It is shown that the uniformizer element 3 is located at three-quarters of the tank body 1; specifically, if the distance between the uniformizer element 3 and the inner top wall of the tank body 1 is too short, it is easy to cause splashing liquid to enter the air intake pipe 5, while if the distance between the uniformizer element 3 and the inner top wall of the tank body 1 is too long, it will affect the liquid level inside the tank body 1.

[0037] The distributor element 3 includes a disc plate, a fixing rod is installed on the top of the disc plate, and the disc plate is installed directly below the liquid outlet of the liquid inlet pipe 2 through the fixing rod; specifically, the disc plate is located directly below the liquid outlet of the liquid inlet pipe 2, so that the incoming petroleum liquid can directly fall on the upper surface of the disc plate, causing a splashing effect.

[0038] The disc plate has a circular structure, the diameter of the disc plate is larger than the outer diameter of the liquid inlet pipe 2, and the disc plate is 1.5CM-2.0CM away from the liquid outlet of the liquid inlet pipe 2; specifically, the diameter of the disc plate is 4cm, which prevents part of the fluid in the liquid inlet pipe 2 from passing over the disc plate and directly falling into the separated liquid inside the tank body 1. The distance between the disc plates is between 1.5-2.0CM, which can better create the effect of oil splashing.

[0039] The disc plate has a square structure, and the four corners of the disc plate have rounded corners; specifically, the length and width of the square disc plate are both 4 cm, which better allows the oil to splash onto the inner wall of the tank body 1.

[0040] Depend on Figure 1 It is shown that the air valve mechanism includes a mist catcher element 51 installed inside the air intake pipe 5, the air intake pipe 5 is provided with an air intake valve element 52, the air intake pipe 5 is opened with an air intake port 53, and the side wall of the air intake pipe 5 is connected to a detection component.

[0041] Preferably, the mist catcher element 51 is a wire mesh mist catcher. When the gas in the tank body 1 passes through the mist catcher element 51, water molecules in the gas are captured and removed, thereby increasing the purity of the gas and avoiding water molecule impurities during detection.

[0042] Specifically, the operator connects the gas collecting device at the gas outlet 53, and by opening the gas outlet valve element 52, the gas inside the tank body 1 passes through the gas outlet pipe 5, the mist catcher element 51, reaches the gas outlet 53, and then enters the gas collecting device for sampling and collection.

[0043] Depend on Figure 1 It is given that the detection component includes a pressure tube 54 arranged on the side wall of the air extraction pipe 5, and the pressure tube 54 is connected to the air extraction pipe 5, and the pressure tube 54 is provided with a pressure gauge element 55; specifically, the pressure gauge element 55 measures and displays the internal pressure of the tank body 1, which is convenient for sampling when the air pressure of the tank body 1 reaches a certain value.

[0044] The observation mechanism includes a liquid level gauge 6, the bottom of the liquid level gauge 6 is connected to a connecting pipe 61, the connecting pipe 61 is connected to the bottom end of the side wall of the tank body 1, the top of the liquid level gauge 6 is connected to a flushing pipe 62, the flushing pipe 62 is connected to the top end of the side wall of the tank body 1, and a liquid level flushing port 63 is opened at the top of the flushing pipe 62.

[0045] Preferably, the liquid level gauge 6 is a tube made of a transparent material and has a scale on the outer surface. The liquid storage capacity in the tank body 1 can be observed by observing the height of the liquid in the liquid level gauge 6; it is also preferred that the liquid level gauge 6 can also adopt a liquid measuring device such as a float level gauge and a pressure level gauge.

[0046] In addition, the cleaning liquid enters the interior of the tank body 1 through the liquid level flushing port 63 and the liquid inlet pipe 2, which can quickly replace and clean the interior of the equipment. The operation is simple, convenient and fast. After cleaning, the cleaning liquid is discharged through the drain pipe 4.

[0047] The liquid inlet pipe 2 is provided with a liquid inlet valve element 21 , and the liquid discharge pipe 4 is provided with a liquid discharge valve element 41 .

[0048] Specifically, the liquid inlet valve element 21 and the liquid discharge valve element 41 are both valves used to control the on-off or flow rate of the pipeline; when liquid is inlet, the liquid inlet valve element 21 of the liquid inlet pipe 2 is opened, and the petroleum liquid enters the tank body 1 through the liquid inlet pipe 2, and the liquid discharge valve element 41 of the liquid discharge pipe 4 is closed; when liquid is discharged, the liquid inlet valve element 21 of the liquid inlet pipe 2 is closed, and the liquid discharge valve element 41 of the liquid discharge pipe 4 is opened, and the petroleum liquid inside the tank body 1 is discharged through the liquid discharge pipe 4.

[0049] The bottom wall of the tank body 1 is provided with a base 11, and the bottom of the base 11 is provided with a pulley element. The top wall of the tank body 1 is symmetrically provided with a handle 12. The bottom of the tank body 1 is a hemispherical structure, and the tank body 1 as a whole is a capsule-shaped structure.

[0050] Preferably, the base 11 is in a tripod structure, which increases the stability of the tank body 1 and prevents the tank body 1 from shaking. The pulley element adopts a universal wheel to facilitate the movement of the device. The hemispherical structure of the tank bottom and the capsule-shaped tank body 1 facilitate the complete outflow of the internal liquid. The entire device weighs only 4 kg and can be easily moved by one person without the cooperation of two people. It is convenient for sampling at multiple points in different positions and can save a lot of work hours. It can also be preferred that the tank body 1 is fixedly installed around the pipeline and can be used directly for sampling and collection, avoiding the need for staff to carry this equipment.

[0051] Sealing ring elements are provided between the tank body 1 and the liquid inlet pipe 2 and the liquid discharge pipe 4. Preferably, the sealing ring elements are sealing rings, gaskets, etc. The sealing rings are installed at the connection between the tank body 1 and the liquid inlet pipe 2 or / and the tank body 1 and the liquid discharge pipe 4 to prevent the petroleum liquid from leaking from the connection and causing unnecessary losses.

[0052] The beneficial effects obtained by the liquid inlet pipe 2, the distributor element 3, the liquid discharge pipe 4, the air sampling pipe 5, the air valve mechanism and the observation mechanism: when sampling the pipeline, the utility model does not need to replace other equipment back and forth for sampling. The equipment can complete the oil sampling, water sampling and gas sampling of the pipeline; the distributor element 3 is installed at the liquid outlet of the liquid inlet pipe 2 to avoid direct impact on the liquid inside the tank body 1 when the liquid is fed in, affecting the oil and water sedimentation separation, and improving the oil, gas and water separation speed and effect; gas sampling can be directly carried out through the air sampling pipe 5 and the air valve mechanism, and the separated oil or water can be sampled and tested through the liquid discharge pipe 4. The operation steps are simple, the use is convenient, and the work efficiency is greatly improved.

[0053] The bottom of the tank body 1 of the utility model is hemispherical, and the overall structure is designed as a capsule, which is convenient for emptying the liquid in the tank body 1, and no liquid accumulation will be retained, making it easier to clean and convert; a liquid level gauge 6 is installed on the side wall of the tank body 1, which can easily observe the liquid level in the tank body 1 and accurately operate the equipment to fill and discharge liquid; the interior of the tank body 1 can be cleaned through the liquid inlet pipe 2 and the liquid level flushing port 63, shortening the equipment replacement time.

[0054] When the utility model is in use: connect the liquid inlet pipe 2 with the sampling port of the target pipeline, close the drain valve component 41, open the liquid inlet valve component 21 and the air extraction valve component 52, at this time the petroleum liquid in the target pipeline enters the tank body 1 through the liquid inlet pipe 2, the gas in the tank body 1 is discharged through the air extraction pipe 5, and the liquid level in the tank body 1 is observed by the liquid level gauge 6. When the liquid level in the tank body 1 reaches a specified height, the tank body 1 is filled with petroleum liquid or is about to be filled with petroleum liquid, so that the original gas in the tank body 1 is completely exhausted; then close the air extraction valve component 52, open the drain valve component 41, and adjust the liquid inlet valve component 21 to reduce the liquid inlet flow rate of the liquid inlet pipe 2. At this time, the liquid discharge flow rate of the drain pipe 4 is greater than the liquid inlet flow rate of the liquid inlet pipe 2, further Store gas; observe the liquid level in the tank body 1 again. After the internal liquid level of the tank body 1 drops to the specified height, close the drain valve component 41, and the liquid inlet pipe 2 continues to feed liquid. The tank body 1 is used to store gas and hold pressure. After observing that the pressure gauge component 55 reaches the specified pressure, close the liquid inlet valve component 21 to stop the liquid inlet pipe 2 from feeding liquid. After two minutes of stillness, the gas collection equipment is connected to the gas extraction pipe 5 and the gas extraction valve component 52 is opened to collect gas samples; the oil collection equipment is connected to the drain pipe 4 and the drain valve component 41 is opened to collect oil samples; the water collection equipment is connected to the drain pipe 4 and the drain valve component 41 is opened to collect water samples. After the sampling is completed, the cleaning liquid is used to clean the tank body 1 and the liquid level gauge 6 through the liquid level flushing port 63 and the liquid inlet pipe 2 to facilitate reuse.

[0055] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A pipeline fluid sampling device, characterized in that: The invention comprises a tank body (1) for sampling and storage, wherein a liquid inlet pipe (2) is provided on the top of the tank body (1), a liquid outlet end of the liquid inlet pipe (2) is provided with a distributor element (3), a liquid discharge pipe (4) is provided at the bottom of the tank body (1), an air extraction pipe (5) is provided on the top wall of the tank body (1), and an air valve mechanism for controlling the flow of fluid in the air extraction pipe (5) is provided on the top wall of the tank body (1), and an observation mechanism for observing the liquid level inside the tank body (1) is provided on the side wall of the tank body (1).

2. A pipeline fluid sampling device according to claim 1, characterized in that: The distributor element (3) is located at three quarters of the tank body (1).

3. A pipeline fluid sampling device according to claim 1, characterized in that: The distributor element (3) comprises a disc plate, a fixing rod is installed on the top of the disc plate, and the disc plate is installed directly below the liquid outlet of the liquid inlet pipe (2) through the fixing rod.

4. A pipeline fluid sampling device according to claim 3, characterized in that: The disc plate has a circular structure, the diameter of the disc plate is larger than the outer diameter of the liquid inlet pipe (2), and the distance between the disc plate and the liquid outlet of the liquid inlet pipe (2) is 1.5CM-2.0CM.

5. The pipeline fluid sampling device according to claim 3, characterized in that: The disc plate is in a square structure, and the four corners of the disc plate are in a rounded structure.

6. The pipeline fluid sampling device according to claim 1, characterized in that: The air valve mechanism comprises a mist catcher element (51) installed inside an air intake pipe (5); the air intake pipe (5) is provided with an air intake valve element (52); the air intake pipe (5) is provided with an air intake port (53); and the connection of the air intake pipe (5) is provided with a detection component.

7. A pipeline fluid sampling device according to claim 6, characterized in that: The detection assembly comprises a pressure tube (54) arranged on the side wall of the air extraction pipe (5), and the pressure tube (54) is connected to the air extraction pipe (5), and the pressure tube (54) is provided with a pressure gauge element (55).

8. The pipeline fluid sampling device according to claim 1, characterized in that: The observation mechanism comprises a liquid level gauge (6), the bottom of the liquid level gauge (6) is connected to a connecting pipe (61), the connecting pipe (61) is connected to the bottom end of the side wall of the tank body (1), the top of the liquid level gauge (6) is connected to a flushing pipe (62), the flushing pipe (62) is connected to the top end of the side wall of the tank body (1), and a liquid level flushing port (63) is opened at the top of the flushing pipe (62).

9. The pipeline fluid sampling device according to claim 1, characterized in that: The liquid inlet pipe (2) is provided with a liquid inlet valve element (21), and the liquid discharge pipe (4) is provided with a liquid discharge valve element (41).

10. The pipeline fluid sampling device according to claim 1, characterized in that: The bottom wall of the tank body (1) is provided with a base (11), and the bottom of the base (11) is provided with a pulley element. The top wall of the tank body (1) is symmetrically provided with a handle (12). The bottom of the tank body (1) is a hemispherical structure, and the tank body (1) as a whole is a capsule-shaped structure. Sealing ring elements are provided between the tank body (1) and the liquid inlet pipe (2) and the liquid discharge pipe (4).

Images