Conveying device for separating oil-water mixture

Abstract

The utility model provides a conveying device for separating oil-water mixture, which comprises a connecting shell which is transversely arranged, circumferentially sealed and internally hollow, the side wall of the connecting shell is provided with an inlet used for being communicated with the inside, and the bottom wall of the connecting shell is provided with an outlet used for being communicated with the inside. Wherein a fixing cylinder which vertically extends and is communicated with the outlet is arranged in the connecting shell, a plurality of through holes are formed in the side wall of the fixing cylinder, a floating part capable of blocking the outlet is arranged in the fixing cylinder, and the density of the floating part is smaller than that of water but larger than that of oil. In this arrangement, the liquid flow channel can be opened when water enters the connecting housing, and the liquid flow channel can be closed when oil enters the connecting housing. In this way, the technical problem that an oil-water mixture cannot be thoroughly separated in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-water mixture separation, and in particular relates to a conveying device for separating the oil-water mixture. Background Art

[0002] During oil and gas production, it is necessary to transfer the water in the formation water in the storage tank. Formation water is generally a mixture of oil and water. Therefore, it is necessary to avoid pumping the oil in the storage tank into the pipeline during the water extraction process.

[0003] In the prior art, a water extraction pipe is usually set at the bottom of the storage tank, so as to extract the water in the lower layer of the storage tank, and the workers observe the extracted liquid with their naked eyes. At the same time, a portion of water needs to be reserved in the storage tank during the extraction process to avoid extracting oil. If oil is accidentally extracted from the storage tank, the extracted liquid needs to be poured into the storage tank to re-extract water.

[0004] When this method is used, although the oil-water mixture in the storage tank can be separated to a certain extent, it is not possible to fully separate the oil-water mixture. In addition, the above method also requires multiple extractions of water from the same storage tank, which is cumbersome and inefficient. Utility Model Content

[0005] In order to overcome at least one or more of the above-mentioned defects in the prior art, the utility model provides a conveying device for separating an oil-water mixture, comprising a circumferential seal arranged transversely and a connecting shell with a hollow interior, wherein the side wall of the connecting shell is provided with an inlet for communicating with the interior, and the bottom wall of the connecting shell is provided with an outlet for communicating with the interior.

[0006] A vertically extending fixed cylinder connected to the outlet is arranged in the connecting shell, a plurality of through holes are opened on the side wall of the fixed cylinder, a floating part capable of blocking the outlet is arranged in the fixed cylinder, and the floating part is constructed with a density less than water but greater than oil.

[0007] In one embodiment, the floating part is a sphere made of mild steel cardboard, paraffin or bamboo.

[0008] In one embodiment, the fixed cylinder is configured to have a structure with a lateral length comparable to that of the outlet.

[0009] In one embodiment, the connection shell is composed of a bottom plate and side plates disposed on the bottom plate and extending upward to form a top opening structure, and a top cover is detachably disposed at the top opening.

[0010] In one embodiment, a threaded hole is provided at a position on the side panel connected to the top cover, a fixing hole is provided at a position on the top cover corresponding to the threaded hole, and a fastener for connecting the top cover and the side panel is provided in the fixing hole.

[0011] In one embodiment, a fixing mechanism for detachably connecting the fixing cylinder is provided between the two side plates.

[0012] In one embodiment, the fixing mechanism includes a first fixing member arranged on the bottom plate, and a second fixing member arranged on the top cover, and both ends of the fixing tube are connected to the first fixing member and the second fixing member respectively.

[0013] In one embodiment, one end of the fixing tube is connected to the first fixing member, and the other end extends upward but has a gap with the top cover, and the gap is smaller than the diameter of the floating portion.

[0014] In one embodiment, the fixing cylinder is used to separate the connecting housing into a first chamber and a second chamber, the first chamber is in communication with the inlet, and the volume of the first chamber is greater than that of the second chamber.

[0015] In one embodiment, the device further comprises a liquid inlet pipe arranged at the inlet and extending transversely along the connecting shell, and a liquid outlet pipe arranged at the outlet and extending in a direction perpendicular to the connecting shell.

[0016] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0017] In the utility model, a horizontal connection shell is provided, an inlet and an outlet perpendicular to each other are provided on the connection shell, and a fixed cylinder with a floating part inside is provided at the outlet. At the same time, the floating part is set to have a density less than water but greater than oil. By setting the above components, when water enters the connection shell, the liquid flow channel can be opened, and when oil enters the connection shell, the liquid flow channel can be closed. In this way, the technical problem that the oil-water mixture cannot be completely separated in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0019] Figure 1 The overall structure of the first embodiment of the conveying device for separating oil-water mixture according to the utility model is schematically shown;

[0020] Figure 2 The overall structure of the second embodiment of the conveying device for separating oil-water mixture according to the utility model is schematically shown;

[0021] Figure 3 The overall structure of the fixed cylinder of the conveying device for separating oil-water mixture according to the utility model is schematically shown.

[0022] It should be noted that the drawings are not necessarily drawn according to actual scale.

[0023] In all the drawings, the same reference numerals represent the same technical features, specifically: 100 - a conveying device for separating an oil-water mixture; 1 - a liquid inlet pipe; 2 - a switch assembly; 21 - a connecting shell; 211 - a first chamber; 212 - a second chamber; 213 - a bottom plate; 214 - a side plate; 215 - a top cover; 216 - an inlet; 217 - an outlet; 22 - a fixing cylinder; 221 - a through hole; 23 - a floating portion; 3 - a liquid outlet pipe; 4 - a fastener; 5 - a fixing mechanism; 51 - a first fixing member; 52 - a second fixing member. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a conveying device for separating an oil-water mixture of the utility model in conjunction with the accompanying drawings.

[0025] For convenience, the direction extending along the connecting shell is referred to as "lateral", "horizontal direction" or similar terms, the direction perpendicular to the "lateral" is referred to as "vertical", "vertical direction" or similar terms, the movement in the "lateral" is referred to as "lateral movement", "horizontal movement" or similar terms, and the movement in the "vertical" is referred to as "vertical movement", "vertical movement" or similar terms.

[0026] According to one embodiment of the utility model, Figure 1 As shown, a conveying device 100 for separating an oil-water mixture comprises a liquid inlet pipe 1 connected to a liquid storage tank (not shown) storing the oil-water mixture, a switch assembly 2 connected to the liquid inlet pipe 1, and a liquid outlet pipe 3 connected to the switch assembly 2. At the same time, the liquid inlet pipe 1 and the liquid outlet pipe 3 are configured to be any structure that facilitates the flow of liquid. In this embodiment, the liquid inlet pipe 1 and the liquid outlet pipe 3 are both configured to be circular tubular structures.

[0027] In this way, the liquid inlet pipe 1, the switch assembly 2, and the liquid outlet pipe 3 can together form a passage for liquid movement. The switch assembly 2 is used to control the opening or closing of the passage. Thus, the opening and closing of the passage can be realized in a selectable manner.

[0028] When the passage is opened, the liquid from the liquid storage tank can enter the liquid inlet pipe 1, pass through the switch assembly 2, reach the liquid outlet pipe 3, and output the liquid from the liquid outlet pipe 3. Thus, the liquid is transported.

[0029] When the passage is closed, the liquid from the liquid storage tank can enter the switch assembly 2 along the path formed by the liquid inlet pipe 1 and is blocked by the switch assembly 2, so that the liquid from the liquid storage tank cannot continue to move along the passage, thereby achieving liquid blocking.

[0030] In one embodiment, Figure 1 As shown, the switch assembly 2 includes a connection housing 21 which is hollow inside and sealed around for connecting the liquid inlet pipe 1 and the liquid outlet pipe 3. The side wall of the connection housing 21 is provided with an inlet 216 for communicating with the inside, and the bottom wall of the connection housing 21 is provided with an outlet 217 for communicating with the inside, and the axes of the inlet 216 and the outlet 217 are perpendicular to each other.

[0031] The liquid inlet pipe 1 is arranged on the inlet 216 and extends horizontally along the connecting shell 21, and the liquid outlet pipe 3 is arranged on the outlet 217 and extends in a direction perpendicular to the connecting shell 21, so that the axes of the liquid inlet pipe 1 and the liquid outlet pipe 3 are perpendicular to each other. Specifically, the liquid inlet pipe 1 and the connecting shell 21 are arranged horizontally, and the liquid outlet pipe 3 is arranged vertically.

[0032] In this arrangement, the liquid entering the liquid inlet pipe 1 from the storage tank (not shown in the figure) will move along the horizontal flow path formed by the liquid inlet pipe 1 and the connecting housing 21. When the liquid moves to the position of the liquid outlet pipe 3, the liquid will change the direction of movement and move along the vertical flow path formed by the liquid outlet pipe 3.

[0033] In one embodiment, Figure 1 As shown, the switch assembly 2 further includes a fixed cylinder 22 disposed in the connection housing 21, and the fixed cylinder 22 is disposed at the liquid inlet end of the liquid outlet pipe 3 and vertically extends upward along the liquid inlet end of the liquid outlet pipe 3. The fixed cylinder 22 is configured as a circular tubular structure having a diameter equal to that of the liquid outlet pipe 3. At the same time, the fixed cylinder 22 can also be configured as a square, rectangular, or triangular tubular structure surrounding the end face of the liquid inlet end of the liquid outlet pipe 3.

[0034] At the same time, if Figure 3 As shown, the fixed cylinder 22 is provided with a plurality of through holes 221 penetrating the wall of the fixed cylinder 22, and the through holes 221 are arranged around the circumference of the fixed cylinder 22. In this way, the liquid entering the connecting housing 21 along the liquid inlet pipe 1 can pass through the through holes 221 and flow out through the liquid outlet pipe 3.

[0035] In one embodiment, Figure 1As shown, a floating portion 23 is provided in the fixed cylinder 22, and the floating portion 23 is configured to be any shape that can fit with the liquid inlet end of the liquid outlet pipe 3 and can block the liquid outlet pipe 3. In this embodiment, the floating portion 23 is configured to be a sphere having a diameter equivalent to the circular diameter of the end face of the liquid outlet pipe 3.

[0036] In this way, the floating part 23 is normally arranged on the liquid inlet end of the liquid outlet pipe 3 under the action of gravity. In this way, the floating part 23 can be used to block the liquid outlet pipe 3, so that the liquid in the connecting housing 21 cannot move into the liquid outlet pipe 3. Thus, the liquid movement channel is closed.

[0037] In one embodiment, the floating part 23 is made of any material with a density less than water but greater than oil. In this embodiment, the floating part 23 is made of soft steel cardboard, paraffin or bamboo. The density of oil is generally 0.7-0.78 g / cm³, the density of water is generally 1.0 g / cm³, and the density of soft steel cardboard, paraffin and bamboo is 0.9 g / cm³. Therefore, the density of the floating part 23 made of the above three materials is less than water but greater than oil.

[0038] In this arrangement, when the liquid entering from the liquid inlet pipe 1 is water, the water can enter the connecting housing 21 along the liquid inlet pipe 1 and enter the fixing cylinder 22 through the through hole 221. At this time, the water will contact the floating part 23, thereby generating an upward buoyancy on the floating part 23.

[0039] Since the density of the floating part 23 is less than that of water, the floating part 23 will float on the water surface. As water continuously enters the fixed cylinder 22, the floating part 23 will continue to move vertically upward along the path formed by the fixed cylinder 22.

[0040] Thus, the floating part 23 will be separated from the liquid inlet end of the liquid outlet pipe 3, so that the liquid outlet pipe 3 and the connecting housing 21 can be connected to each other, so that water can move along the passage. In this arrangement, when water enters from the liquid inlet pipe 1, the passage for the movement of the liquid can be opened.

[0041] When the liquid entering from the liquid inlet pipe 1 is oil, the oil can enter the connecting housing 21 along the liquid inlet pipe 1 and enter the fixed cylinder 22 through the through hole 221. At this time, the oil will contact the floating part 23, thereby generating a vertical upward buoyancy on the floating part 23.

[0042] Since the density of the floating part 23 is greater than that of the oil, the buoyancy provided by the oil is insufficient to make the floating part 23 move vertically upward along the path formed by the fixed cylinder 22. As a result, the floating part 23 will continue to fit with the liquid inlet end of the liquid outlet pipe 3, so that no passage for liquid movement can be formed between the liquid outlet pipe 3 and the connecting shell 21. In this arrangement, when oil enters from the liquid inlet pipe 1, the passage for liquid movement cannot be opened. In this way, the full separation of oil and water is achieved.

[0043] According to a preferred embodiment of the present invention, Figure 1 As shown, the connection housing 21 is composed of a bottom plate 213 and a side plate 214 extending upward from the bottom plate 213, forming a structure with an opening formed on the top and a hollow interior. A top cover 215 is detachably provided at the opening. A threaded hole (not shown in the figure) is provided at a position on the side plate 214 connected to the top cover 215, and a fixing hole (not shown in the figure) is provided at a position on the top cover 215 corresponding to the threaded hole.

[0044] Among them, Figure 1 As shown, a fastener 4 is disposed in the fixing hole, and a thread matching the threaded hole is disposed on the fastener 4. In this way, the fastener 4 can pass through the fixing hole and connect with the threaded hole. Thus, the side plate 214 and the top cover 215 can be connected as one in a detachable manner, so that the top cover 215 can be removed from the side plate 214 to clean the inside of the connection housing 21.

[0045] In one embodiment, Figure 1 As shown, a fixing mechanism 5 for detachably connecting the fixing cylinder 22 is disposed in the connecting housing 21 and between the two side plates 214. The fixing mechanism 5 includes a first fixing member 51 disposed on the outer periphery of the liquid inlet end of the liquid outlet pipe 3, and the fixing cylinder 22 is detachably disposed in the first fixing member 51. In this way, it is easy to remove the fixing cylinder 22 from the connecting housing 21.

[0046] According to a preferred embodiment of the present invention, Figure 1 As shown, the fixing mechanism 5 further includes a second fixing member 52 disposed on the top cover 215 for connecting the free end of the fixing cylinder 22. In this way, the fixing cylinder 22 can be further stably disposed in the connecting housing 21. In this embodiment, the first fixing member 51 and the second fixing member 52 are both configured as circular ring structures adapted to the fixing cylinder 22.

[0047] In one embodiment, both ends of the fixed cylinder 22 are respectively connected to the first fixing member 51 and the second fixing member 52. In this way, the fixed cylinder 22 can separate the connecting housing 21 into a first chamber 211 and a second chamber 212. Among them, the first chamber 211 and the second chamber 212 communicate with each other. In this embodiment, the first chamber 211 communicates with the inlet 216, and the volume of the first chamber 211 is larger than the volume of the second chamber 212.

[0048] In this setting, the liquid entering the connecting housing 21 from the liquid inlet pipe 1 can move along the path formed by the connecting housing 21, so that the liquid fills the first chamber 211 and the second chamber 212. At this time, the liquid in the first chamber 211 and the second chamber 212 can enter the fixed cylinder 22 along the through hole 221. In this way, the floating part 23 located in the fixed cylinder 22 will be subjected to the buoyancy exerted by the liquid in the circumferential direction, so that the force on the floating part 23 is more uniform and the movement state is more stable when moving upward along the fixed cylinder 22.

[0049] Figure 2 shows the structure of the second embodiment of the conveying device 100 for separating oil-water mixture of the present invention. Compared with the conveying device 100 for separating oil-water mixture shown in Figure 1, the difference is that there is a gap between the free end of the fixed cylinder 22 and the top cover 215 of the connecting housing 21.

[0050] Among them, the fixed cylinder 22 is arranged at the liquid inlet end of the liquid outlet pipe 3 and extends vertically upward along the liquid inlet end of the liquid outlet pipe 3. At the same time, the distance between the free end of the fixed cylinder 22 and the top cover 215 is smaller than the diameter of the floating part 23. Specifically, h < d. Thus, the floating part 23 cannot break away from the fixed cylinder 22.

[0051] The operation of the conveying device 100 for separating oil-water mixture according to the present invention is as follows.

[0052] First, connect the liquid inlet pipe 1, the switch assembly 2, and the liquid outlet pipe 3 in sequence. Then, connect the liquid inlet pipe 1 to a liquid storage tank (not shown in the figure) storing the oil-water mixture, and connect the liquid outlet pipe 3 to a container in the next process. At the same time, place the device 100 horizontally. Specifically, make the liquid inlet pipe 1 horizontal and the liquid outlet pipe 3 vertical. In this way, the liquid inlet pipe 1, the switch assembly 2, and the liquid outlet pipe 3 together form a channel for liquid movement.

[0053] Secondly, convey the liquid in the liquid storage tank along the liquid inlet pipe 1 into the device. As the liquid continuously enters the device, the liquid will fill the connecting housing 21 and generate an upward buoyancy force on the floating part 23 arranged in the connecting housing 21.

[0054] When the liquid entering the device is water, since the density of the floating part 23 is less than that of water, the floating part 23 will float on the water surface and continue to move vertically upward along the path formed by the fixed cylinder 22. As a result, the floating part 23 will be separated from the liquid inlet end of the liquid outlet pipe 3, so that the liquid outlet pipe 3 and the connecting shell 21 can be connected to each other, forming a liquid movement path, so that water can move along the path.

[0055] When the liquid entering the device is oil, the density of the floating part 23 is greater than that of the oil. Therefore, the buoyancy provided by the oil is not enough to make the floating part 23 move vertically upward along the path formed by the fixed cylinder 22. Therefore, the floating part 23 will continue to fit with the liquid inlet end of the liquid outlet pipe 3, so that no passage for liquid movement can be formed between the liquid outlet pipe 3 and the connecting shell 21. In this setting, when oil enters the device 100, the passage for liquid movement is closed. In this way, the oil and water are fully separated.

[0056] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A conveying device for separating oil-water mixture, characterized in that: It comprises a connection shell (21) which is arranged transversely and has a circumferential seal and a hollow interior, wherein the side wall of the connection shell (21) is provided with an inlet (216) for communicating with the interior, and the bottom wall of the connection shell (21) is provided with an outlet (217) for communicating with the interior. A fixed cylinder (22) extending vertically and communicating with the outlet (217) is arranged in the connecting shell (21), a plurality of through holes (221) are provided on the side wall of the fixed cylinder (22), and a floating portion (23) capable of blocking the outlet (217) is arranged in the fixed cylinder (22), and the floating portion (23) is constructed to have a density less than that of water but greater than that of oil.

2. The conveying device for separating oil-water mixture according to claim 1, characterized in that: The floating part (23) is a sphere made of soft steel cardboard, paraffin or bamboo.

3. The conveying device for separating oil-water mixture according to claim 2, characterized in that: The fixed cylinder (22) is configured to have a structure having a lateral length equivalent to that of the outlet (217).

4. The conveying device for separating oil-water mixture according to claim 1, characterized in that: The connecting shell (21) is composed of a bottom plate (213) and a side plate (214) arranged on the bottom plate (213) and extending upward to form a top opening structure, and a top cover (215) is detachably arranged at the top opening.

5. The conveying device for separating oil-water mixture according to claim 4, characterized in that: A threaded hole is provided at a position on the side plate (214) connected to the top cover (215), a fixing hole is provided at a position on the top cover (215) corresponding to the threaded hole, and a fastener (4) for connecting the top cover (215) and the side plate (214) is provided in the fixing hole.

6. The conveying device for separating oil-water mixture according to claim 4, characterized in that: A fixing mechanism (5) for connecting the fixing cylinder (22) in a detachable manner is provided between the two side plates (214).

7. The conveying device for separating oil-water mixture according to claim 6, characterized in that: The fixing mechanism (5) comprises a first fixing member (51) arranged on the bottom plate (213), and a second fixing member (52) arranged on the top cover (215), and two ends of the fixing cylinder (22) are respectively connected to the first fixing member (51) and the second fixing member (52).

8. The conveying device for separating oil-water mixture according to claim 6, characterized in that: One end of the fixing cylinder (22) is connected to the first fixing member (51), and the other end extends upward but has a gap with the top cover (215), wherein the gap is smaller than the diameter of the floating portion (23).

9. The conveying device for separating oil-water mixture according to claim 6, characterized in that: The fixed cylinder (22) is used to separate the connecting shell (21) into a first chamber (211) and a second chamber (212); the first chamber (211) is in communication with the inlet (216); and the volume of the first chamber (211) is greater than that of the second chamber (212).

10. The conveying device for separating oil-water mixture according to claim 1, characterized in that: The device further comprises a liquid inlet pipe (1) arranged at the inlet (216) and extending transversely along the connecting shell (21), and a liquid outlet pipe (3) arranged at the outlet (217) and extending in a direction perpendicular to the connecting shell (21).

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