CN112371358B

CN112371358B - Outflow direction and multiphase product adjustable cyclone separation device

Info

Publication number: CN112371358B
Application number: CN202010960713.8A
Authority: CN
Inventors: 刘扬; 邢雷; 张爽; 赵立新; 刘琳; 王志华
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-11
Anticipated expiration: 2040-09-14
Also published as: CN112371358A

Abstract

A cyclone separation device with adjustable outflow direction and multiphase products. The cyclone separation device includes an overflow pipe of the cyclone device, an upper casing of the cyclone, a lower casing of the cyclone, a switching rod sleeve, a switching rod, a rod valve, a spring and a guide vane; the cyclone separation device The separation simulation can be switched by the pushable structure, and the direction of the overflow outlet can be switched to realize two-phase or three-phase separation. This adjustable cyclone separation device is designed for the oilfield site where the outlet pipeline often needs to be replaced, and the produced fluid has complex composition and unknown gas content. The realization of continuous separation and other characteristics enhances the feasibility and applicability of the oil-water separation device, which can be used in the petroleum industry, environmental protection industry and other fields.

Description

Outflow direction and multiphase product adjustable cyclone separation device

Technical Field

The invention relates to a cyclone separation device.

Background

The cyclone separation is a method for quickly separating two-phase or multi-phase immiscible media, the separation principle of the cyclone separation device is centrifugal separation by utilizing the density difference between the immiscible media, and the cyclone separation device has the advantages of small equipment volume, quick separation and the like, and is widely applied to the separation field of immiscible media such as petroleum exploitation, chemical engineering, food processing, environmental protection and the like. However, due to the fact that the field working condition and the produced liquid are complex in composition, higher requirements are put forward on the field applicability of the separation device, and when the produced liquid does not contain gas or the gas content is lower, the gas phase does not need to be separated independently; but when the gas content of the produced liquid is higher, three phases of oil, gas and water need to be separated. Because the existence of a large amount of gas phase can increase the degree of interphase mixing and turbulence, the separation is unstable, and the existence of the gas phase can also occupy the space of the overflow oil outlet, thereby influencing the oil-water separation effect of the cyclone device; on the other hand, gas may affect other components of the process column coupled to the cyclone separator, and eventually affect each other, further deteriorating the separation effect. In the prior art, a cyclone separation device which can flexibly switch working modes according to different working conditions and produced liquid requirements so as to enhance the applicability of separation equipment to the working condition change does not exist.

Disclosure of Invention

In order to solve the technical problems mentioned in the background technology, the invention provides the cyclone separation device with the adjustable outflow direction and the multiphase products, the working mode of the cyclone separation device can be flexibly switched according to different working conditions and produced liquid requirements, and the applicability of the separation device to the working condition change is enhanced. The adjustable cyclone separation device for the outflow direction and the multiphase products has the advantages of simple structure, easiness in processing, high reliability, various modes, simple mode switching method, simple treatment process and high adaptability to different working conditions, and can be widely recognized and applied in the petroleum industry and the environment-friendly industry.

The technical scheme of the invention is as follows: the adjustable cyclone separation device with the outflow direction and the multiphase products comprises a cyclone device overflow pipe, a cyclone upper shell and a cyclone lower shell, wherein the cyclone device overflow pipe is of a cylindrical structure, and a hole is formed in the center of the top of the cyclone device overflow pipe; the cyclone separator comprises a cyclone separator upper shell and a cyclone separator lower shell, wherein the cyclone separator upper shell and the cyclone separator lower shell are both of cylindrical structures, the upper portion of the side surface of the cyclone separator upper shell is horizontally connected with a liquid inlet, the bottom opening of the cyclone separator lower shell is a bottom overflow port, and the lower portion of the side surface of the cyclone separator lower shell is horizontally connected with a bottom flow port. The unique character lies in:

the upper shell of the cyclone is connected with a concave flange, the concave flange is provided with a groove, and the groove contains sealant; the upper shell of the cyclone has a smooth inner wall; the cyclone upper shell is connected with an incoming liquid inlet which is used for being connected with an external pipeline.

The separating device also comprises a switching rod sleeve, a switching rod, a guide vane, a spring and a rod-shaped valve.

The inner wall of the switching rod sleeve is provided with a plurality of keys, deep grooves and shallow grooves which are distributed at intervals; the switching rod is provided with teeth and square keys, and the number of the teeth is the same as that of the square keys and is consistent with that of the square keys; the switching rod sleeve is connected with the switching rod in a sleeved mode, and the square keys are located in shallow grooves or deep grooves in the switching rod sleeve.

The guide vane is of a variable helix angle structure and comprises a plurality of helical vanes with smooth edges, a central hole channel is formed in the center of each guide vane, a large flange lower part is fixed at the upper end of each guide vane, a boss is arranged on the large flange lower part, and the boss is matched with a groove on the concave flange; the guide vanes are connected with the upper shell of the swirler through the lower part of the large flange and the concave flange, and after connection, the spiral vanes are closely matched with the inner wall of the upper shell of the swirler.

The upper part of the rod-shaped valve is provided with a double bond, the middle part of the rod-shaped valve is provided with a disc, and the lower part of the rod-shaped valve is provided with a round head; the width of the double bond is larger than the diameter of the circular arc where the bond is located, and the diameter of the round head is larger than the diameter of the central pore passage of the guide vane.

The parts of the cyclone separation device are combined into a whole in the following mode: the overflow pipe of the cyclone device has the same central axis with the upper shell of the cyclone, the lower shell of the cyclone and the guide vanes.

The overflow pipe of the rotational flow device is connected with the guide vane through the upper part of the large flange and the lower part of the large flange; the guide vane is connected with the upper shell of the swirler through the lower part of the large flange and the concave flange; the upper shell and the lower shell of the cyclone are connected in a matching way through the concave flange and the convex flange; the switching rod sleeve is connected with an overflow pipe of the rotational flow device in an interference fit connection mode; the switching rod is connected in the switching rod sleeve in a key matching manner; the switching rod is sleeved on the rod-shaped valve and is inserted into the central pore passage of the guide vane together.

The round head is connected to the rod-shaped valve below, the spring cover is in the round head top.

The invention has the following beneficial effects: the cyclone separation device can change an outlet pipeline and is more suitable for the complicated working conditions on site; the mode switching mode is simple, and only the switching rod above the device needs to be pressed; the structure is simple, the processing is easy, and the reliability is high; the treatment process is simple, the installation is convenient, and the continuous separation can be realized; the method can be used in the fields of petroleum industry, environmental protection industry and the like, and has considerable popularization prospect; the method can be applied to oil-water separation in the well, and can deal with the conditions that produced liquid contains gas and does not contain gas.

Description of the drawings:

fig. 1 is an exploded view of the present invention.

Fig. 2 is an axial cross-sectional view of the present invention.

Fig. 3 is an external view of the present invention.

FIG. 4 shows the connection between the overflow pipe and the guide vane.

FIG. 5 illustrates the connection of the guide vanes to the upper cyclone casing according to the present invention.

FIG. 6 shows the connection of the cyclone lower casing and the cyclone upper casing according to the invention.

Fig. 7 is an assembly view of the overflow tube, the upper cyclone casing and the lower cyclone casing of the cyclone device.

Fig. 8 shows the connection mode of the switching rod sleeve and the overflow pipe of the rotational flow device.

Fig. 9 is a schematic view of a shift lever sleeve.

Fig. 10 is a schematic view of the switching lever.

Fig. 11 is a perspective view of the engagement between the switch lever and the switch lever sleeve.

Fig. 12 is an illustration of a stem valve.

Fig. 13 is a polished view of the guide vane.

FIG. 14 is a sectional view of the flow path opening/closing control mechanism.

In the figure, 1-a cyclone device overflow pipe, 2-a cyclone device upper shell, 3-a cyclone device lower shell, 4-a switching rod sleeve, 5-a switching rod, 6-a rod-shaped valve, 7-a spring, 8-a guide vane, 9-an inlet, 10-a top overflow port, 11-a bottom overflow port, 12-a bottom overflow port, 13-a hole, 14-a small flange, 15-a large boss, 16-a large flange, 17-a vane 18-a side hole, 19-a large flange, 20-a groove, 21-a concave flange, 22-a convex flange, 23-a concave flange, 24-a ring groove, 25-a bottom overflow port flange, 26-a lower outlet flange, 27-a deep groove, 28-a shallow groove, 29-a key, 30-a square key, 31-a tooth, 32-double bond, 33-disc, 34-round head. .

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 to 14, an overall cylindrical cyclone separation device with adjustable outflow direction and multiphase products is provided.

The cyclone device overflow pipe 1 is connected to the guide vane 8 through a flange, connected to the upper cyclone shell 2 of the guide vane 8 through a flange, connected to the lower cyclone shell 3 of the upper cyclone shell 2 through a flange, connected to the switching rod sleeve 4 through an interference fit mode, nested in the switching rod 5, nested in the rod valve 6, nested in the spring 7 and the rod valve 6 outside the guide vane 8.

A hole 13 is formed above the overflow pipe 1 of the rotational flow device, and the hole 13 is aligned with a flow passage in the center of the guide vane 8, so that a switching sleeve rod is conveniently embedded in the hole; the lower part of the overflow pipe 1 of the cyclone device is connected with the lower part 16 of the large flange on the guide vane 8 through the upper part 19 of the large flange, the large boss 15 is designed on the lower part 16 of the large flange and matched with the groove 20 of the upper part 19 of the large flange, and the inside of the overflow pipe 1 of the cyclone device is coated with oil and sealant, so that the stability and the sealing property of the connection between the overflow pipe 1 of the cyclone device and the guide vane 8 are ensured. During the installation process, it is necessary to ensure that the side hole 18 is aligned with the top overflow port 10, so as to complete the installation of the overflow pipe 1 and the guide vane 8 of the swirling device.

The large flange lower 16 on the guide vane 8 is matched with a concave flange 21 of an upper shell of the cyclone, a boss is arranged on the large flange lower 16, a groove 20 is formed in the concave flange 21, the groove 20 is matched with the boss, and sealant is contained between the groove 20 and the boss, so that the stability and the sealing property of the connection between the guide vane 8 and the upper shell of the cyclone are ensured; the edges of the blades 17 on the guide vanes 8 are smooth, the inner wall of the upper shell of the cyclone is smooth, and the two are tightly matched, so that the efficiency of forming the cyclone by the fluid is high, and the installation of the upper shell of the cyclone and the guide vanes 8 is completed.

The lower convex flange 22 of the upper cyclone shell is matched with the lower concave flange 21 of the lower cyclone shell, a boss is arranged on the lower convex flange 22, a ring groove 24 is formed in the concave flange 21, the ring groove 24 is matched with the boss, and sealant is contained between the ring groove 24 and the boss, so that the connection stability and the sealing property of the lower cyclone shell and the upper cyclone shell are ensured; the upper shell of the cyclone is horizontally connected with an incoming liquid inlet 9; the lower outlet flange 26 is flanged to the underflow port 11 to complete the mounting of the cyclone lower casing and the cyclone upper casing.

The switching rod sleeve 4 is connected with the overflow pipe 1 of the rotational flow device in an interference fit connection mode, and the installation height of the switching rod sleeve is determined according to the position of the rod-shaped valve 6, so that the rod-shaped valve 6 can be freely opened and closed; the switching rod sleeve 4 is provided with keys 29, deep grooves 27, shallow grooves 28, deep grooves 27 and shallow grooves 28 which are penetrated, the switching rod 5 is provided with teeth 31, the number of the teeth 31 is the same as that of the keys 29 on the switching rod sleeve 4, the switching rod 5 is also provided with square keys 30, the number of the square keys is also the same as that of the keys 29 on the switching rod sleeve 4, the switching rod sleeve 4 is connected with the switching rod 5 in a sleeved mode, and the square keys 30 are positioned in the shallow grooves 28 or the deep grooves 27; in addition, the switching rod 5 is connected with the switching rod 5 sleeve 4 in a sliding and sealing mode, so that oil phase or gas phase cannot flow out of the gap.

The upper part of the rod-shaped valve 6 is provided with a double key 32, the middle part is provided with a disc 33, the lower part is provided with a round head 34, wherein the width of the double key 32 is larger than the diameter of an arc where the key 29 is positioned, so that the realization of the mechanism function is ensured; the diameter of the round head 34 is larger than that of the central flow passage of the guide vane 8, so that the round head 34 can be used as a valve to close the flow passage.

The switching rod 5 is connected in the switching rod sleeve 4 in a key matching mode, the switching rod 5 is sleeved on the rod-shaped valve 6 and inserted into a central pore passage of the guide vane 8, the round head 34 is connected below the rod-shaped valve 6, and the spring 7 is sleeved above the round head 34. The switching rod 5 is pressed, the switching rod 5 drives the rod-shaped valve 6 to move downwards, the switching rod 5 is released, the rod-shaped valve 6 is bounced by the spring 7 and is clamped by the shallow groove 28 on the sleeve 4 of the switching rod 5, and the flow channel is opened at the moment; the switching rod 5 is pressed down again, the switching rod 5 drives the rod-shaped valve 6 to move downwards, the switching rod 5 is loosened, the rod-shaped valve 6 is bounced by the spring 7, at the moment, the double key 32 on the sleeve 4 of the switching rod 5 is not contacted with the bottom of the deep groove 27, but the round head 34 on the rod-shaped valve 6 is clamped at the central flow passage opening of the guide vane 8, so that the flow passage is closed; and the opening and closing of the flow passage can be realized by pressing again.

The working process of the device is as follows:

(1) when the liquid to be treated is a mixture of oil and water phases, the liquid to be treated enters the upper shell of the cyclone through the liquid inlet and flows in the fluid channel on the guide vane to form a rotational flow, the oil and water phases coming out of the guide vane enter the lower shell of the cyclone to be centrifugally separated, the oil phase is positioned at the axis of the device due to low density, the water phase is thrown to the outer wall of the rotational flow device, finally the water phase flows out from the bottom flow port, the oil phase flows out from the bottom overflow port, and the flow channel in the center of the guide vane is closed by the rod-shaped valve.

(2) When the oil phase outlet is switched, the switching rod is pressed, the switching rod drives the rod-shaped valve to move in the switching rod sleeve, the rod-shaped valve is slightly lower than the rod-shaped valve and fixed, the flow channel in the center of the guide vane is opened by the rod-shaped valve, the top overflow port is communicated with the inner space of the upper shell of the cyclone, meanwhile, the valve of the bottom overflow port is closed, the oil phase at the axis of the cyclone device reaches the top overflow port through the flow channel in the center of the guide vane and flows out, and the water phase at the outer wall of the cyclone device flows out through the bottom flow port.

(3) When the liquid to be treated is an oil-gas-water three-phase mixture, the valve of the bottom overflow port is required to be opened while the flow channel at the center of the guide vane is opened by the rod-shaped valve, so that the gas phase reaches the top overflow port and flows out through the flow channel at the center of the guide vane due to the minimum density above the cyclone device, the oil phase is positioned at the center below the cyclone device and flows out from the bottom overflow port, the water phase is positioned near the outer wall of the cyclone device and flows out from the bottom overflow port, and the oil-gas-water three-phase separation is realized. Thereby, two-phase or three-phase separation under different separation mode switching is realized.

Claims

1. A cyclone separation device with adjustable outflow direction and multiphase product, comprising a cyclone overflow pipe (1), an upper casing (2) of a cyclone, and a lower casing (3) of the cyclone. The device overflow pipe (1) has a cylindrical structure with a hole in the center of the top; the upper shell (2) and the lower shell (3) of the cyclone are both cylindrical structures, and the upper shell of the cyclone has a side upper part The incoming liquid inlet (9) is horizontally connected, the bottom opening of the lower casing (3) of the cyclone is a bottom overflow port (14), and the lower part of the side surface of the lower casing (3) of the cyclone is horizontally connected to the bottom flow port (11) ; characterized by:

The upper shell (2) of the cyclone is connected with a concave flange (21), the concave flange (21) is provided with a groove (20), and the groove (20) contains sealant; the upper shell of the cyclone It has a smooth inner wall; the upper casing of the cyclone is connected to an incoming liquid inlet (9) for connecting with an external pipeline;

The separating device further comprises a switching rod sleeve (4), a switching rod (5), a guide vane (8), a spring (7) and a rod valve (6);

Several keys (29), deep grooves (27) and shallow grooves (28) are opened on the inner wall of the switching rod sleeve (4), and the deep grooves (27) and the shallow grooves (28) are distributed at intervals; 5) Teeth (31) and square keys (30) are arranged thereon, and the number of the teeth is the same as that of the square keys, and is the same as the number of keys (29). 5) For the sleeve connection, the square key (30) is located in the shallow groove (28) or the deep groove (27) on the switching rod sleeve (4);

The guide vane is of a variable helical lift angle structure, including a number of helical vanes (17) with smooth edges, a central hole is opened in the center of the guide vane, and a large flange lower (16) is fixed on the upper end of the guide vane. There is a boss on the lower flange (16), the boss is matched with the groove (20) on the female flange (21); the guide vane (8) and the upper casing of the cyclone pass through the large flange The lower part (16) is connected with the concave flange (21), and after the connection, the helical blade (17) is closely matched with the inner wall of the upper casing of the cyclone;

The upper part of the rod valve (6) has a double key (32), the middle part of the rod valve (6) has a disc (33), and the lower part of the rod valve (6) has a round head (34); among them, the double key (32) ) is larger than the diameter of the arc where the key (29) is located, and the diameter of the round head (34) is larger than the diameter of the central hole of the guide vane (8);

The parts of the cyclone separation device are combined into one body in the following manner: the overflow pipe (1) of the cyclone device, the upper shell (2) of the cyclone, the lower shell (3) of the cyclone and the guide vanes (8) have the same central axis;

The overflow pipe (1) of the swirl device is connected with the guide vane (8) through the upper flange (19) and the lower flange (16); the guide vane is connected through the lower flange (16) and the concave flange. (21) is connected with the upper shell (2) of the cyclone; the upper shell (2) and the lower shell (3) of the cyclone are connected by a concave flange (21) and a lower convex flange (22); the The switching rod sleeve (4) is connected with the overflow pipe (1) of the swirl device by means of interference fit; the switching rod (5) is connected in the switching rod sleeve (4) by means of key fitting; The rod (5) is sleeved on the rod-shaped valve (6), and is inserted into the central hole of the guide vane (8) together;

A round head (34) is connected below the rod-shaped valve (6), and the spring (7) is sleeved above the round head (34).