Oil-gas-oil-water separator and rock drill

Abstract

The oil-gas-oil-water separator comprises a shell, a filter element and a plug are arranged on the shell, an oil-water separation cavity is defined by the filter element and the shell, a water storage cavity is defined by the plug and the shell, a gas inlet channel used for leading oil gas to be treated into the filter element is arranged on the shell, and a gas outlet channel used for leading the oil gas to be treated into the water storage cavity is formed in the shell. The filter element is connected with a gas outlet connector used for discharging oil gas, the oil-water separation cavity is arranged above the water storage cavity and communicated with the water storage cavity through a through hole, and the area of the connecting end face, connected with the through hole, of the water storage cavity is larger than the sectional area of the through hole in the radial direction of the through hole. The oil-gas-oil-water separator and the rock drill are simple and compact in structure, low in cost, capable of achieving oil-water separation of oil and gas without an extra power source, capable of being integrated in the rock drill, easy to disassemble and maintain and capable of effectively reducing the corrosion speed of all movable metal parts of the rock drill and prolonging the service life of the rock drill.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drills, in particular to an oil-gas-oil-water separator. In addition, the utility model also relates to a rock drill comprising the oil-gas-oil-water separator. Background Art

[0002] At present, rock drills are a common type of construction machinery used in tunnel construction using the drill and blast method. Under high-frequency impact, the flushing water of the rock drill is prone to flow back into the oil and gas channel through the gap between the drill tail and the water injection sleeve, causing the drill tail oil droplets in the oil and gas to emulsify and deteriorate, reducing the lubrication effect, and accelerating the oxidation and corrosion of the moving parts in the rock drill, seriously affecting the working efficiency of the rock drill. Therefore, removing water from the lubricating oil gas can effectively improve its lubrication effect and extend the service life of the moving parts of the rock drill.

[0003] Existing cyclone separators are divided into two types: axial flow type and centrifugal type. Axial flow type, such as the downhole double vortex cyclone oil-water separator disclosed in Chinese patent CN111206913A, uses double co-directional cyclones to perform preliminary separation of oil droplets with larger particle sizes in the crude oil mixture, and double reverse cyclones to perform deep separation of oil droplets with smaller particle sizes in the crude oil mixture. Downhole oil-water separation requires a large flow rate during normal operation, and the structure is relatively complex; because the oil and gas of the rock drill itself has kinetic energy and a small flow rate, the oil-water separation efficiency of this structure of oil-water wind turbine is low. Centrifugal type, such as the cyclone oil-water separator disclosed in Chinese patent CN206069451U, oily wastewater enters the cyclone oil-water separation cylinder downward at a certain angle from the tangent direction, flows through the cyclone plate driven by compressed air, and uses centrifugal force to complete oil-water separation. The treated water and floating oil are discharged from the upper and lower outlets and the side outlets of the cylinder respectively. Because the rock drill needs to adjust the working posture according to the working angle when in use, when the cyclone oil-water separator is deflected with the rock drill, the water stored in the inverted cone water outlet is easy to flow back into the cyclone oil-water separation cylinder, and even flow out from the floating oil outlet. Therefore, this type of oil-water wind turbine is not suitable for rock drills.

[0004] In summary, there is an urgent need to improve the existing cyclone separator to be suitable for oil-gas and oil-water separation in rock drills. Utility Model Content

[0005] The utility model provides an oil-gas-oil-water separator and a rock drill, so as to solve the technical problem that the existing cyclone separator is difficult to be applied to the oil-gas-oil-water separation of the rock drill.

[0006] According to one aspect of the utility model, an oil-gas and oil-water separator is provided, comprising a shell, a filter element and a plug are arranged on the shell, the filter element and the shell enclose an oil-water separation chamber, the plug and the shell enclose a water storage chamber, the shell is provided with an air inlet channel for introducing the oil and gas to be treated into the filter element, the filter element is connected to an air outlet joint for discharging the oil and gas, the oil-water separation chamber is arranged above the water storage chamber and is connected through a through hole, and the area of ​​the connecting end face of the water storage chamber and the through hole is larger than the cross-sectional area of ​​the through hole along its radial direction.

[0007] Furthermore, the connection end surface between the water storage cavity and the through hole is in a circular ring shape.

[0008] Furthermore, the filter element is provided with a fixed base for connecting to the shell and a tangential air inlet channel tangential to the filter element for introducing the oil and gas to be processed.

[0009] Furthermore, the plurality of tangential air inlet channels are evenly arranged along the circumferential direction of the filter element.

[0010] Furthermore, the axis of the tangential air inlet passage is located in a radial plane of the filter element.

[0011] Furthermore, an air outlet interface for connecting the air outlet connector is provided on the fixed base, and the end surface position of the air outlet connector extending into the air outlet interface is 10 to 15 mm deeper than the axial position of the tangential air inlet channel.

[0012] Furthermore, the fixed base and the shell enclose an annular cavity for connecting the air inlet channel and the tangential air inlet channel.

[0013] Furthermore, a sealing groove is provided on the fixed base, and a sealing ring for sealing the gap between the fixed base and the shell is embedded in the sealing groove.

[0014] Furthermore, the surface of the oil-water separation chamber connected to the through hole is a conical surface and closes toward the through hole.

[0015] According to another aspect of the utility model, a rock drill is also provided, which includes the above-mentioned oil-gas-oil-water separator.

[0016] The utility model has the following beneficial effects:

[0017] The utility model discloses an oil-gas-oil-water separator, wherein the inner wall surface of the filter element and the shell form an oil-water separation chamber, the plug and the shell form a water storage chamber, the oil-water separation chamber and the water storage chamber are connected through a through hole, when in use, the oil and gas to be processed enter the filter element through the air inlet channel, and a vortex is formed in the oil-water separation chamber of the filter element by utilizing the speed of the oil and gas to be processed, and the oil-water separation of the oil and gas is completed by centrifugal force, and the separated water flows into the water storage chamber through the through hole due to its own gravity for storage, and the processed oil and gas are discharged through the air outlet joint Since the area of ​​the connecting end face is larger than the cross-sectional area of ​​the through hole along its radial direction, a step is formed at the connection between the through hole and the water storage chamber. When the oil-gas oil-water separator is deflected along with the rock drill, the step can prevent the water in the water storage chamber from flowing back into the oil-water separation chamber, thereby avoiding the emulsification and deterioration of the drill tail oil droplets in the oil and gas, and ensuring the working efficiency of the rock drill. The structure is simple and compact, and the oil-water separation of oil and gas can be completed without an additional power source. It can be integrated inside the rock drill to increase the service life of the rock drill.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of an oil-gas-oil-water separator of a preferred embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a filter element of a preferred embodiment of the utility model.

[0022] Legend:

[0023] 1. Shell; 11. Oil-water separation chamber; 111. Conical surface; 12. Water storage chamber; 121. Connecting end surface; 13. Air inlet channel; 14. Through hole; 15. Annular cavity; 2. Air outlet connector; 3. Filter element; 31. Fixed base; 32. Air outlet interface; 33. Sealing groove; 34. Tangential air inlet channel; 35. Inner wall surface of filter element; 4. Sealing ring; 5. Plug. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0025] Please also read Figure 1 and Figure 2The oil-gas and oil-water separator of this embodiment includes a shell 1, on which a filter element 3 and a plug 5 are arranged, the filter element 3 and the shell 1 surround an oil-water separation chamber 11, the plug 5 and the shell 1 surround a water storage chamber 12, an air inlet channel 13 for introducing the oil and gas to be treated into the filter element 3 is arranged on the shell 1, and an air outlet connector 2 for discharging the oil and gas is connected to the filter element 3, the oil-water separation chamber 11 is arranged above the water storage chamber 12, and is connected through a through hole 14, and the area of ​​a connecting end face 121 connecting the water storage chamber 12 and the through hole 14 is larger than the cross-sectional area of ​​the through hole 14 along its radial direction.

[0026] In the oil-gas-oil-water separator of the present embodiment, the filter element inner wall surface 35 of the filter element 3 and the shell 1 enclose an oil-water separation chamber 11, the plug 5 and the shell 1 enclose a water storage chamber 12, and the oil-water separation chamber 11 is connected with the water storage chamber 12 through the through hole 14. When in use, the oil and gas to be processed enters the filter element 3 through the air inlet channel 13, and a vortex is formed in the oil-water separation chamber 11 of the filter element 3 by utilizing the speed of the oil and gas to be processed itself, and the oil and water separation of the oil and gas is completed by centrifugal force. The separated water flows into the water storage chamber 12 through the through hole 14 due to its own gravity for storage, and the processed oil and gas are discharged through the air outlet joint 2, without the need for an additional power source. The oil and water separation of oil and gas is completed; since the area of ​​the connecting end face 121 is larger than the cross-sectional area of ​​the through hole 14 along its radial direction, a step is formed at the connection between the through hole 14 and the water storage chamber 12. When the oil and gas oil-water separator is deflected along with the rock drill, the step can prevent the water in the water storage chamber 12 from flowing back into the oil-water separation chamber 11, thereby avoiding the emulsification and deterioration of the drill tail oil droplets in the oil and gas, and ensuring the working efficiency of the rock drill. It has a simple and compact structure with low cost, can be integrated inside the rock drill, is easy to disassemble and maintain, can effectively slow down the corrosion rate of the various moving metal parts of the rock drill, and improve the service life of the rock drill. Optionally, the housing 1 and the filter element 3, the air outlet joint 2 and the filter element 3, and the filter element 3 and the plug 5 are all detachably connected by threads, which is convenient for completing the cleaning work during maintenance.

[0027] In this embodiment, the connection end face 121 connecting the water storage chamber 12 and the through hole 14 is annular, so as to ensure that when the rock drill is deflected at any angle, there is a step to prevent the water in the water storage chamber 12 from flowing back into the oil-water separation chamber 11. Optionally, the water storage chamber 12 and the through hole 14 are coaxially arranged, so that the connection end face 121 and the through hole 14 are concentrically arranged, and the steps are evenly distributed on the periphery of the through hole 14.

[0028] In this embodiment, the filter element 3 is provided with a fixed base 31 for connecting to the shell 1 and a tangential air inlet channel 34 tangential to the filter element 3 for passing the oil and gas to be processed. The fixed base 31 can increase the rigidity of the filter element 3 and avoid deformation of the filter element 3; the tangential air inlet channel 34 is tangential to the inner wall surface 35 of the filter element, which can reduce the kinetic energy loss of the oil and gas itself and ensure the effect of centrifugal separation.

[0029] In this embodiment, a plurality of tangential air inlet channels 34 are evenly arranged along the circumferential direction of the filter element 3 to ensure that the oil and gas to be processed can flow along the inner wall surface 35 of the filter element to form a vortex, thereby ensuring that the oil-water separation can proceed normally.

[0030] In this embodiment, the axis of the tangential air inlet channel 34 is located in a radial plane of the filter element 3 to ensure that the oil and gas to be processed forms a uniform and stable swirl in the oil-water separation chamber 11.

[0031] like Figure 1 As shown, in this embodiment, the fixed base 31 is provided with an air outlet interface 32 for connecting the air outlet connector 2, and the end surface position H of the air outlet connector 2 extending into the air outlet interface 32 is 1 The axis position H of the tangential air intake passage 34 is 2 The depth is 10 to 15 mm, and the lower end of the outlet connector 2 is inserted into the outlet interface 32, so that the lower end surface of the outlet connector 2 is below the tangential air inlet channel 34. On the one hand, if the depth of the outlet connector 2 is too small, the oil and gas to be processed can escape directly from the outlet interface 32, and the oil-water separation effect is not good; on the other hand, the outer wall of the outlet connector 2 inserted into the outlet interface 32 is conducive to guiding the internal flow field to rotate, and increasing the insertion depth of the outlet interface 32 is conducive to driving the rotation of the fluid in the lower part of the oil-water separation chamber 11. However, if the insertion depth is too deep, the intermediate oil cannot enter the outlet connector 2 in time, thereby reducing the separation efficiency; therefore, the projection position H of the lower end surface of the outlet connector 2 on the axis of the filter element 3 is 1 The projection position H of the axis of the tangential air inlet passage 34 on the axis of the filter element 3 is 2 The depth is 10-15 mm to ensure the oil-water separation effect. Optionally, the end surface position of the outlet connector 2 extending into the outlet interface 32 is 13 mm deeper than the axis position of the tangential air inlet channel 34 .

[0032] In this embodiment, the fixed base 31 and the shell 1 enclose an annular cavity 15 for connecting the air inlet channel 13 and the tangential air inlet channel 34. The structure is simple and the processing is convenient. During assembly, there is no need to align the air inlet channel 13 and the tangential air inlet channel 34, which can improve the assembly efficiency.

[0033] In this embodiment, a sealing groove 33 is provided on the fixed base 31 , and a sealing ring 4 is embedded in the sealing groove 33 for sealing the gap between the fixed base 31 and the housing 1 , which can improve the sealing effect and prevent the leakage of the treated oil and gas in the annular cavity 15 .

[0034] In this embodiment, the surface connecting the oil-water separation chamber 11 and the through hole 14 is a conical surface 111 , and closes toward the through hole 14 , which can guide water droplets into the water storage chamber 12 and prevent water droplets from accumulating in the oil-water separation chamber 11 .

[0035] A rock drill comprises the above-mentioned oil-gas-oil-water separator.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oil-gas-oil-water separator, characterized in that: The invention comprises a housing (1), wherein a filter element (3) and a plug (5) are arranged on the housing (1), wherein the filter element (3) and the housing (1) enclose an oil-water separation chamber (11), and the plug (5) and the housing (1) enclose a water storage chamber (12), wherein an air inlet channel (13) for introducing the oil and gas to be treated into the filter element (3) is arranged on the housing (1), and an air outlet connector (2) for discharging the oil and gas is connected to the filter element (3). The oil-water separation chamber (11) is arranged above the water storage chamber (12) and is connected via a through hole (14). The area of ​​the connection end surface (121) where the water storage cavity (12) is connected to the through hole (14) is larger than the cross-sectional area of ​​the through hole (14) along its radial direction.

2. The oil-gas-oil-water separator according to claim 1, characterized in that: The connection end surface (121) connecting the water storage cavity (12) and the through hole (14) is in the shape of a circular ring.

3. The oil-gas-oil-water separator according to claim 1 or 2, characterized in that: The filter element (3) is provided with a fixed base (31) for connecting to the housing (1) and a tangential air inlet channel (34) tangential to the filter element (3) for introducing the oil and gas to be processed.

4. The oil-gas-oil-water separator according to claim 3, characterized in that: The plurality of tangential air inlet channels (34) are evenly arranged along the circumferential direction of the filter element (3).

5. The oil-gas-oil-water separator according to claim 4, characterized in that: The axis of the tangential air inlet channel (34) is located in a radial plane of the filter element (3).

6. The oil-gas-oil-water separator according to claim 5, characterized in that: The fixed base (31) is provided with an air outlet interface (32) for connecting to the air outlet connector (2). The position of the end surface of the air outlet joint (2) extending into the air outlet interface (32) is 10 to 15 mm deeper than the axial position of the tangential air inlet channel (34).

7. The oil-gas-oil-water separator according to claim 4, 5 or 6, characterized in that: The fixed base (31) and the housing (1) enclose an annular cavity (15) for connecting the air inlet channel (13) and the tangential air inlet channel (34).

8. The oil-gas-oil-water separator according to claim 7, characterized in that: The fixed base (31) is provided with a sealing groove (33), and a sealing ring (4) for sealing the gap between the fixed base (31) and the housing (1) is embedded in the sealing groove (33).

9. The oil-gas-oil-water separator according to claim 1, characterized in that: The surface where the oil-water separation chamber (11) is connected to the through hole (14) is a conical surface (111) and closes toward the through hole (14).

10. A rock drill, characterized in that: An oil-gas-oil-water separator comprising any one of claims 1 to 9.

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