X-type oil way device and mounting structure thereof

Abstract

The utility model discloses an X-type path oil device and a mounting structure thereof. The X-type path oil device comprises a multi-head oil outlet seat and a multi-head oil outlet head, the multi-head oil outlet seat comprises a first shell and more than one first inner pipe; a mounting structure is arranged on the outer side of the first shell; one end of each first inner pipe is positioned on the inner side of the first shell, and the other end penetrates through the side wall of the first shell to form a first inlet; a second inlet is formed in the first shell; the multi-head oil outlet head comprises a second shell and more than one second inner pipe; one end of each second inner pipe is positioned inside the second shell, and the other end penetrates out of the side wall of the second shell to form a first outlet; a second outlet is formed in the second shell; the first shell and the second shell are rotatably connected together to form a through independent oil outlet passage; the number of the first inner pipes is equal to that of the second inner pipes, the first inner pipes and the second inner pipes are in one-to-one correspondence, and the first inner pipes and the corresponding second inner pipes are rotatably connected together to form through independent oil outlet channels. The device can resist sea wind wave impact.

Description

Technical Field

[0001] The utility model relates to an X-type oiler and its installation structure, belonging to the technical field of oil production on drilling platforms. Background Art

[0002] With the deepening of human development and utilization of oil and gas resources, oil and gas exploration and development have shifted from land to the ocean. Therefore, drilling engineering operations must also be carried out in the vast ocean. When conducting oil and gas drilling construction at sea, a drill rig weighing hundreds of tons requires sufficient support and placement space, and at the same time, there must be living quarters for drilling personnel. Offshore oil drilling platforms undertake this important task.

[0003] During the process of oil production and loading on offshore drilling platforms, due to the influence of sea waves and other factors, problems such as shaking and oil leakage may occur, and serious ones may lead to accidents. For this reason, the inventor has developed an X-type oiler and its installation structure, which can effectively solve the instability problems caused by the marine climate during the process of oil production and loading on offshore drilling platforms. Summary of the Utility Model

[0004] The utility model provides an X-type oiler and its installation structure, which can improve the stability and safety of oil production and loading on offshore drilling platforms, effectively resist the impact of sea waves, and at the same time improve the loading efficiency.

[0005] To solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] An X-type oiler includes a multi-head oil outlet seat and a multi-head oil outlet head;

[0007] The multi-head oil outlet seat includes a first outer shell and more than one first inner pipe;

[0008] An installation structure is provided on the outer side of the first outer shell; one end of each first inner pipe is located inside the first outer shell, and the other end passes through the side wall of the first outer shell to form a first inlet; there is a gap between the first inner pipe and the first outer shell inside the first outer shell, but the intersection of the first inner pipe and the first outer shell is a sealed structure; a second inlet is provided on the side wall of the first outer shell, and the first inlets and the second inlet are evenly distributed along the circumferential direction of the first outer shell;

[0009] The multi-head oil outlet head includes a second outer shell and more than one second inner pipe;

[0010] One end of each second inner pipe is located inside the second outer shell, and the other end passes through the side wall of the second outer shell to form a first outlet; there is a gap between the second inner pipe and the second outer shell inside the second outer shell, but the intersection of the second inner pipe and the second outer shell is a sealed structure; a second outlet is provided on the side wall of the second outer shell, and the first outlets and the second outlet are evenly distributed along the circumferential direction of the second outer shell;

[0011] The top of the first outer shell is rotatably connected to the bottom of the second outer shell to form an independent oil outlet passage that penetrates from the second inlet to the second outlet; the number of the first inner pipes is equal to that of the second inner pipes and they correspond one by one. The top of the first inner pipe is rotatably connected to the bottom of the corresponding second inner pipe to form an independent oil outlet passage that penetrates from the corresponding first inlet to the first outlet.

[0012] Each corresponding first inner pipe and second inner pipe are rotatably connected together to form an independent oil outlet passage.

[0013] The above-mentioned corresponding first inlet to the first outlet refers to the first inlet to the first outlet on the corresponding first inner pipe and second inner pipe.

[0014] The utility model is provided with multiple inlets and multiple outlets, multiple independent oil outlet passages, and the multi-headed oil outlet head can rotate freely. When there are wind and waves, it can effectively balance and buffer the shaking of the oil loading ship, resist the impact of sea wind and waves, and improve the oil loading efficiency at the same time.

[0015] For the convenience of maintenance and the collection of oil leakage, the above-mentioned X-type oil separator further includes an oil leakage collection tank, a main collection tank, a first return oil pipe and a second return oil pipe;

[0016] The oil leakage collection tank is arranged at the bottom of the connection between the first outer shell and the second outer shell for collecting the oil leakage at the connection;

[0017] One end of the first return oil pipe is communicated with the top of the main collection tank, and the other end branches into a first return oil branch pipe A and a first return oil branch pipe B. The first return oil branch pipe A is communicated with the bottom of the oil leakage collection tank, and the first return oil branch pipe B is communicated with the bottom of the first outer shell. An oil pump can be set on the first return oil branch pipe A as needed. When the first return oil branch pipe A is arranged from top to bottom, the oil pump can be not set. Under the action of gravity, the oil in the oil leakage collection tank will automatically flow into the main collection tank. However, due to on-site restrictions, when it cannot be arranged from top to bottom, an oil pump needs to be set. An oil pump is provided on the first return oil branch pipe B;

[0018] A return oil port is arranged at the top of the second outer shell; one end of the second return oil pipe is communicated with the bottom of the main collection tank, and the other end is communicated with the return oil port. An oil pump is provided on the second return oil pipe;

[0019] When leakage occurs at the connection between the first outer shell and the second outer shell, the leaked oil falls into the oil leakage collection tank and enters the main collection tank through the first return oil branch pipe A; when the first return oil branch pipe A is not arranged from top to bottom, an oil pump needs to be set on the first return oil branch pipe A. When it is necessary to transport the oil in the oil leakage collection tank to the main collection tank, the oil pump on the first return oil branch pipe A needs to be started;

[0020] When performing maintenance, start the oil pump on the first return oil branch pipe B to transport the oil in the first outer shell and the second outer shell to the main collection tank;

[0021] When the normal oil output is in progress, start the oil pump on the second return oil pipe to transport the oil in the main collecting tank to the oil return port.

[0022] The oil pump can be a manual oil pump.

[0023] Instruments, power pumps, etc. can be set on each pipeline according to the on-site conditions.

[0024] For the convenience of use, the above X-type oil separator further includes a drain pipe, which is communicated with the second return oil pipe, and a valve and an oil pump are provided on the drain pipe; when it is necessary to transport the oil in the main collecting tank to other equipment, connect the drain pipe with other equipment, open the valve and the oil pump, and the oil in the main collecting tank enters other equipment.

[0025] To improve the stability of use, when the number of the first inner pipe and the second inner pipe is more than two, the first inner pipes located in the first outer shell are evenly distributed in the first outer shell, and the second inner pipes located in the second outer shell are evenly distributed in the second outer shell.

[0026] To further improve the stability, the first inlet and the second inlet have the same shape, the same size, and the same setting height; the first outlet and the second outlet have the same shape, the same size, and the same setting height.

[0027] To meet the general oil production requirements, as a specific implementation solution, the number of the first inner pipes is one, there is one second inlet provided on the side wall of the first outer shell, and the first inlet and the second inlet are symmetrically arranged; the number of the second inner pipes is one, there is one second outlet provided on the side wall of the second outer shell, and the first outlet and the second outlet are symmetrically arranged.

[0028] To further improve the use stability of the device, the top of the first inner pipe is coaxially arranged with the first outer shell; the bottom of the second inner pipe is coaxially arranged with the second outer shell, and the first outer shell and the second outer shell are coaxially arranged; the first inlet and the first outlet are respectively located on both sides of the first outer shell and the second outer shell, and the second inlet and the second outlet are respectively located on both sides of the first outer shell and the second outer shell, forming an X-shaped oil outlet passage.

[0029] To facilitate use and installation, both the first inlet and the second inlet are arranged with openings downward, and the ends of the first inlet and the second inlet are flush with the horizontal plane.

[0030] To facilitate oil loading connection, both the first outlet and the second outlet are arranged with openings facing the side, and the ends of the first outlet and the second outlet are flush with the vertical plane.

[0031] As another implementation solution, both the first outlet and the second outlet are arranged with openings upward, and the ends of the first outlet and the second outlet are flush with the horizontal plane.

[0032] In order to facilitate assembly while ensuring the stability and safety of the device and to facilitate adjustment, the top of the first inner tube is flush with the top of the first outer shell; the bottom of the second inner tube is flush with the bottom of the second outer shell; the mounting structure on the outside of the first outer shell is a mounting flange; the top of the first outer shell and the bottom of the second outer shell, and the top of the first inner tube and the corresponding bottom of the second inner tube are respectively connected by bearings, and the bearings are tapered roller self-aligning bearings (spherical roller bearings); self-tightening seals are provided between the top of the first outer shell and the bottom of the second outer shell, and between the top of the first inner tube and the corresponding bottom of the second inner tube, to improve sealing and reliability and reduce leakage.

[0033] The mounting structure of the X-type oiler is installed on the platform through the mounting structure on the outside of the first shell. The first inlet and the second inlet are both below the platform and are connected to the oil outlet pipes respectively; the first outlet and the second outlet are above the platform and are connected to the oil inlet pipes of the oil filling device through hoses respectively.

[0034] The technologies not mentioned in this utility model are all referred to the prior art.

[0035] The utility model X-type oil pipe is used as an interface between the oil output and oil loading of the drilling platform. The utility model is provided with multiple inlets and multiple outlets, and the multiple oil outlet heads can rotate freely. When there are wind and waves, it can effectively balance and buffer the shaking of the oil loading ship, resist the impact of wind and waves at sea, and at the same time improve the oil loading efficiency; it is stable and reliable; further, when there is a leak, the leaked oil can be effectively collected, and when maintenance is carried out, the oil in the shell can be easily discharged, and the loss is reduced or avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the X-type oil pipe of the utility model;

[0037] In the figure, 1 is a multi-head oil outlet seat, 11 is a first inner tube, 111 is a first inlet, 12 is a first outer shell, 121 is a second inlet, 2 is a multi-head oil outlet, 21 is a second inner tube, 211 is a first outlet, 22 is a second outer shell, 221 is a second outlet, 222 is an oil return port, 3 is an oil leakage collection box, 4 is a total oil collection box, 5 is a first oil return pipe, 6 is a second oil return pipe, 7 is a tapered roller spherical bearing, 8 is a self-tightening seal, 9 is a platform, 10 is a manual oil pump, and 13 is an oil drain pipe. DETAILED DESCRIPTION

[0038] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0039] In this application, directional words such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings or in use, and are only for the convenience of describing the application, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the application.

[0040] Example 1

[0041] like Figure 1 As shown, an X-type oiler includes a multi-head oil outlet seat and a multi-head oil outlet head;

[0042] The multi-head oil outlet seat comprises a first outer shell and more than one first inner tube;

[0043] A mounting structure is provided on the outside of the first shell; one end of each first inner tube is located on the inside of the first shell, and the other end passes through the side wall of the first shell to form a first inlet; a gap is left between the first inner tube in the first shell and the first shell, but the intersection of the first inner tube and the first shell is a sealed structure; a second inlet is provided on the side wall of the first shell, and the first inlet and the second inlet are evenly distributed along the circumference of the first shell;

[0044] The multi-head oil outlet head includes a second outer shell and more than one second inner tube;

[0045] One end of each second inner tube is located inside the second outer shell, and the other end passes through the side wall of the second outer shell to form a first outlet; a gap is left between the second inner tube in the second outer shell and the second outer shell, but the intersection of the second inner tube and the second outer shell is a sealed structure; a second outlet is provided on the side wall of the second outer shell, and the first outlet and the second outlet are evenly distributed along the circumference of the second outer shell;

[0046] The top of the first outer shell and the bottom of the second outer shell are rotatably connected together to form an independent oil outlet passage from the second inlet to the second outlet; the number of first inner tubes and second inner tubes is equal and one-to-one corresponding, and the top of the first inner tube and the bottom of the corresponding second inner tube are rotatably connected together to form an independent oil outlet passage from the corresponding first inlet to the first outlet.

[0047] The above-mentioned multiple inlets and multiple outlets are provided with multiple independent oil outlet passages, and the multiple oil outlet heads can rotate freely. When there are wind and waves, they can effectively balance and buffer the shaking of the oil loading ship, resist the impact of wind and waves at sea, and at the same time improve the oil loading efficiency.

[0048] Example 2

[0049] On the basis of Embodiment 1, the following further improvements are made: for the convenience of maintenance and collection of oil leakage, the above X-type oil separator further includes an oil leakage collection tank, a main collection tank, a first oil return pipe, and a second oil return pipe;

[0050] The oil leakage collection tank is arranged at the bottom of the connection between the first housing and the second housing for collecting the oil leakage at the connection;

[0051] One end of the first oil return pipe communicates with the top of the main collection tank, and the other end branches into a first oil return branch pipe A and a first oil return branch pipe B. The first oil return branch pipe A communicates with the bottom of the oil leakage collection tank, and the first oil return branch pipe B communicates with the bottom of the first housing. An oil pump can be arranged on the first oil return branch pipe A as required. When the first oil return branch pipe A is arranged from top to bottom, the oil pump may not be arranged. Under the action of gravity, the oil in the oil leakage collection tank will automatically flow into the main collection tank. However, due to site restrictions, when it cannot be arranged from top to bottom, an oil pump needs to be arranged. An oil pump is arranged on the first oil return branch pipe B;

[0052] An oil return port is arranged at the top of the second housing; one end of the second oil return pipe communicates with the bottom of the main collection tank, and the other end communicates with the oil return port. A manual oil pump is arranged on the second oil return pipe;

[0053] When oil leakage occurs at the connection between the first housing and the second housing, the leaked oil falls into the oil leakage collection tank and enters the main collection tank through the first oil return branch pipe A; when the first oil return branch pipe A is not arranged from top to bottom, an oil pump needs to be arranged on the first oil return branch pipe A. When it is necessary to transport the oil in the oil leakage collection tank to the main collection tank, the oil pump on the first oil return branch pipe A needs to be started; during maintenance, the oil pump on the first oil return branch pipe B is started to transport the oil in the first housing and the second housing to the main collection tank; during normal oil output, the manual oil pump on the second oil return pipe is started to transport the oil in the main collection tank to the oil return port.

[0054] Embodiment 3

[0055] On the basis of Embodiment 2, the following further improvements are made: for the convenience of use, the above X-type oil separator further includes a drain pipe, which communicates with the second oil return pipe. A valve and an oil pump are arranged on the drain pipe; when it is necessary to transport the oil in the main collection tank to other equipment, the drain pipe is connected to other equipment, and the valve and the oil pump are opened, and the oil in the main collection tank enters other equipment.

[0056] Embodiment 4

[0057] On the basis of Embodiment 3, the following further improvements are made: To improve the stability of use, when the number of the first inner tube and the second inner tube is more than two, the first inner tubes located in the first outer shell are evenly distributed in the first outer shell, and the second inner tubes located in the second outer shell are evenly distributed in the second outer shell. To further improve the stability, the first inlet and the second inlet are the same in shape, equal in size, and the same in installation height; the first outlet and the second outlet are the same in shape, equal in size, and the same in installation height.

[0058] Embodiment 5

[0059] On the basis of Embodiment 3, the following further improvements are made: As Figure 1 shown, the number of the first inner tubes is one, and there is one second inlet provided on the side wall of the first outer shell. The first inlet and the second inlet are the same in shape, equal in size, and symmetrically arranged. Both the first inlet and the second inlet are arranged with openings downward, and the ends of the first inlet and the second inlet are flush with the horizontal plane; the number of the second inner tubes is one, and there is one second outlet provided on the side wall of the second outer shell. The first outlet and the second outlet are the same in shape, equal in size, and symmetrically arranged. Both the first outlet and the second outlet are arranged with openings facing the side (the first outlet faces the right side, and the second outlet faces the left side), and the ends of the first outlet and the second outlet are flush with the vertical plane.

[0060] As Figure 1 shown, to further improve the stability of use of the device, the top of the first inner tube is coaxially arranged with the first outer shell; the bottom of the second inner tube is coaxially arranged with the second outer shell, and the first outer shell is coaxially arranged with the second outer shell; the first inlet and the first outlet are respectively located on both sides of the first outer shell and the second outer shell, and the second inlet and the second outlet are respectively located on both sides of the first outer shell and the second outer shell, forming an X-shaped oil outlet passage.

[0061] As Figure 1 shown, to facilitate assembly, while ensuring the stability and safety of the device and being convenient for adjustment, the top of the first inner tube is flush with the top of the first outer shell; the bottom of the second inner tube is flush with the bottom of the second outer shell; the installation structure on the outer side of the first outer shell is an installation flange; the top of the first outer shell and the bottom of the second outer shell, and the top of the first inner tube and the bottom of the corresponding second inner tube are respectively connected by bearings, and the bearings are spherical roller bearings; self-tightening seals are provided between the top of the first outer shell and the bottom of the second outer shell, and between the top of the first inner tube and the bottom of the corresponding second inner tube to improve the sealing performance and reliability and reduce leakage.

[0062] The installation structure of the above X-type oil separator is installed on the platform through the installation structure on the outer side of the first outer shell. Both the first inlet and the second inlet are below the platform and are respectively connected to the oil outlet pipes; the first outlet and the second outlet are above the platform and are respectively connected to the inlet pipes of the oil filling device through hoses.

[0063] The oil production method using the above-mentioned X-type oiler: the oil in the oil outlet pipe is transported to the oil inlet pipe of the oil loading device through two independent oil outlet passages respectively. When there are wind and waves, the structure of the X-shaped oil outlet passage and the rotation of the X-shaped oil outlet passage with the wind can effectively balance and buffer the shaking of the oil loading ship, resist the impact of wind and waves at sea, and at the same time improve the oil loading efficiency, stability and reliability; once a leak occurs at the connection between the first shell and the second shell, the leaked oil falls into the leaking oil collection box and enters the main oil collection tank through the first return oil branch pipe A; when maintenance is performed, the oil pump on the first return oil branch pipe B is started to transport the oil in the first shell and the second shell to the main oil collection tank; when the oil is discharged normally, the manual oil pump on the second return oil pipe is started to transport the oil in the main oil collection tank to the return oil port.

Claims

1. An X-type router, characterized in that: It includes a multi-outlet seat (1) and a multi-outlet head (2); The multi-outlet seat (1) includes a first outer shell (12) and more than one first inner tube (11); An installation structure is provided on the outer side of the first outer shell (12); one end of each first inner tube (11) is located inside the first outer shell (12), and the other end passes through the side wall of the first outer shell (12) to form a first inlet (111); there is a gap between the first inner tube (11) and the first outer shell (12) inside the first outer shell (12), and the intersection of the first inner tube (11) and the first outer shell (12) is a sealing structure; a second inlet (121) is provided on the side wall of the first outer shell (12), and the first inlets (111) and the second inlet (121) are evenly distributed along the circumferential direction of the first outer shell (12); The multi-outlet head (2) includes a second outer shell (22) and more than one second inner tube (21); One end of each second inner tube (21) is located inside the second outer shell (22), and the other end passes through the side wall of the second outer shell (22) to form a first outlet (211); there is a gap between the second inner tube (21) and the second outer shell (22) inside the second outer shell (22), and the intersection of the second inner tube (21) and the second outer shell (22) is a sealing structure; a second outlet (221) is provided on the side wall of the second outer shell (22), and the first outlets (211) and the second outlet (221) are evenly distributed along the circumferential direction of the second outer shell (22); The top of the first outer shell (12) is rotatably connected to the bottom of the second outer shell (22) to form an independent oil outlet passage that penetrates from the second inlet (121) to the second outlet (221); the number of the first inner tubes (11) is equal to that of the second inner tubes (21) and they correspond one by one, and the top of the first inner tube (11) is rotatably connected to the bottom of the corresponding second inner tube (21) to form an independent oil outlet passage that penetrates from the corresponding first inlet (111) to the first outlet (211).

2. The X-type router according to claim 1, characterized in that: It further includes an oil leakage collection tank (3), a total collection oil tank (4), a first oil return pipe (5) and a second oil return pipe (6); The oil leakage collection tank (3) is arranged at the bottom of the connection between the first outer shell (12) and the second outer shell (22); One end of the first oil return pipe (5) is communicated with the top of the total collection oil tank (4), and the other end branches into a first oil return branch pipe A and a first oil return branch pipe B. The first oil return branch pipe A is communicated with the bottom of the oil leakage collection tank (3), and the first oil return branch pipe B is communicated with the bottom of the first outer shell (12). A oil pump is provided on the first oil return branch pipe B; A oil return port (222) is provided at the top of the second outer shell (22); one end of the second oil return pipe (6) is communicated with the bottom of the total collection oil tank (4), and the other end is communicated with the oil return port (222). A oil pump is provided on the second oil return pipe (6).

3. The X-type router according to claim 2, characterized in that: It further includes a drain pipe (13), the drain pipe (13) is communicated with the second oil return pipe (6), and a valve and a oil pump are provided on the drain pipe (13).

4. The X-type router according to any one of claims 1-3, characterized in that: When the number of the first inner tubes (11) and the second inner tubes (21) is more than two, the first inner tubes (11) located inside the first outer shell (12) are evenly distributed inside the first outer shell (12), and the second inner tubes (21) located inside the second outer shell (22) are evenly distributed inside the second outer shell (22).

5. The X-type road oiler according to any one of claims 1-3, characterized in that: The first inlet (111) and the second inlet (121) have the same shape, the same size, and the same set height; the first outlet (211) and the second outlet (221) have the same shape, the same size, and the same set height.

6. The X-type router according to any one of claims 1-3, characterized in that: The number of the first inner pipes (11) is one. There is a second inlet (121) provided on the side wall of the first outer shell (12). The first inlet (111) and the second inlet (121) are symmetrically arranged; the number of the second inner pipes (21) is one. There is a second outlet (221) provided on the side wall of the second outer shell (22). The first outlet (211) and the second outlet (221) are symmetrically arranged.

7. The X-type road oiler according to claim 6, characterized in that: The top of the first inner pipe (11) is coaxially arranged with the first outer shell (12); the bottom of the second inner pipe (21) is coaxially arranged with the second outer shell (22). The first outer shell (12) and the second outer shell (22) are coaxially arranged; the first inlet (111) and the first outlet (211) are respectively located on both sides of the first outer shell (12) and the second outer shell (22). The second inlet (121) and the second outlet (221) are respectively located on both sides of the first outer shell (12) and the second outer shell (22), forming an X-shaped oil outlet passage.

8. The X-type router according to any one of claims 1-3, characterized in that: Both the first inlet (111) and the second inlet (121) are arranged with openings downward, and the ends of the first inlet (111) and the second inlet (121) are flush with the horizontal plane; both the first outlet (211) and the second outlet (221) are arranged with openings facing the side, and the ends of the first outlet (211) and the second outlet (221) are flush with the vertical plane; or, both the first outlet (211) and the second outlet (221) are arranged with openings upward, and the ends of the first outlet (211) and the second outlet (221) are flush with the horizontal plane.

9. The X-type router according to any one of claims 1-3, characterized in that: The top of the first inner pipe (11) is flush with the top of the first outer shell (12); the bottom of the second inner pipe (21) is flush with the bottom of the second outer shell (22); the installation structure on the outside of the first outer shell (12) is an installation flange; the top of the first outer shell (12) and the bottom of the second outer shell (22), and the top of the first inner pipe (11) and the bottom of the corresponding second inner pipe (21) are respectively connected by bearings. The bearings are spherical roller bearings (7); self-tightening seals (8) are provided between the top of the first outer shell (12) and the bottom of the second outer shell (22), and between the top of the first inner pipe (11) and the bottom of the corresponding second inner pipe (21).

10. The installation structure of the X-type router according to any one of claims 1-9, characterized in that: It is installed on the platform (9) through the installation structure on the outside of the first outer shell (12). Both the first inlet (111) and the second inlet (121) are below the platform and are respectively connected to the oil outlet pipes; both the first outlet (211) and the second outlet (221) are above the platform and are respectively connected to the inlet pipes of the oil filling device through hoses.

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