Sampling device

Abstract

The utility model discloses a sampling device, which relates to the technical field of sampling and comprises a sampling hose arranged in a petrochemical storage tank. The adapter is arranged in the petrochemical storage tank, the suction mechanism is arranged on the outer side of the petrochemical storage tank, the lower end of the sampling hose is communicated with the suction mechanism through the adapter, and the suction mechanism is used for sucking petrochemical liquid in the petrochemical storage tank, so that the petrochemical liquid in the sampling hose and the adapter can be sucked out of the petrochemical storage tank; the output end of the lifting driving mechanism is arranged in the petrochemical storage tank, and the lifting driving mechanism is used for driving the upper end of the sampling hose to ascend or descend, so that the sampling hose can suck petrochemical liquid at different heights in the petrochemical storage tank. The sampling hose can suck the petrochemical liquid at different heights in the petrochemical storage tank, so that the subsequent quality detection and analysis result of the petrochemical liquid is more representative and comprehensive, and the accuracy of the subsequent quality detection and analysis of the petrochemical liquid is favorably improved.

Description

Technical Field

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

[0002] Petrochemical storage tanks are large containers or equipment used to store petrochemical products such as oil and chemicals. These storage tanks are usually made of metal or concrete, with anti-corrosion coatings and other safety measures to ensure that the stored materials do not leak or be contaminated by the external environment. Petrochemical storage tanks play a vital role in the petroleum industry and are used to store various petrochemical liquids such as crude oil and refined oil. In order to detect the quality of petrochemical liquids in petrochemical storage tanks in real time, a sampling device is usually set on the petrochemical storage tank, which can collect the petrochemical liquid in the petrochemical storage tank and move the petrochemical liquid to the outside of the petrochemical storage tank, so as to facilitate the quality detection and analysis of the petrochemical liquid. In the prior art, the sampling device usually includes a sampling tube for sucking petrochemical liquid, which is fixed on the petrochemical storage tank and extends into the petrochemical storage tank, which makes the sampling tube only sample the petrochemical liquid at the same height in the petrochemical storage tank, so that the subsequent petrochemical liquid quality detection and analysis structure is not representative and comprehensive, which is not conducive to improving the accuracy of the subsequent petrochemical liquid quality detection and analysis. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a sampling device, which is conducive to improving the accuracy of subsequent petrochemical liquid quality detection and analysis.

[0004] The sampling device according to the embodiment of the utility model comprises:

[0005] A sampling hose, the sampling hose is arranged in a petrochemical storage tank;

[0006] An adapter and a suction mechanism, wherein the adapter is disposed in the petrochemical storage tank, the suction mechanism is disposed outside the petrochemical storage tank, the lower end of the sampling hose is connected to the suction mechanism through the adapter, and the suction mechanism is used to suck the petrochemical liquid in the petrochemical storage tank, so that the petrochemical liquid in the sampling hose and the adapter can be sucked out of the petrochemical storage tank;

[0007] A lifting drive mechanism, wherein the output end of the lifting drive mechanism is arranged in the petrochemical storage tank, and the output end of the lifting drive mechanism is connected to the upper end of the sampling hose. The lifting drive mechanism is used to drive the upper end of the sampling hose to rise or fall, so that the sampling hose can suck the petrochemical liquid at different heights in the petrochemical storage tank.

[0008] At least the following beneficial effects:

[0009] When it is necessary to conduct quality inspection and analysis on the petrochemical liquid in the petrochemical storage tank, the suction mechanism is started, and the petrochemical liquid in the petrochemical storage tank can pass through the upper end of the sampling hose and enter the sampling hose. Under the continuous suction action of the suction mechanism, the petrochemical liquid in the sampling hose flows through the adapter and is sucked out of the petrochemical storage tank, so that the operator can conduct quality inspection and analysis on the petrochemical liquid in the petrochemical storage tank. In the process of the sampling hose sucking the petrochemical liquid, the lifting drive mechanism can drive the upper end of the sampling hose to rise or fall, and the sampling hose can suck the petrochemical liquid at different heights in the petrochemical storage tank, so that the petrochemical liquid sucked out of the petrochemical storage tank is more representative, and the subsequent petrochemical liquid quality inspection and analysis results are more representative and comprehensive, which is conducive to improving the accuracy of subsequent petrochemical liquid quality inspection and analysis.

[0010] According to the sampling device of the embodiment of the utility model, the lifting drive mechanism includes a rotating shaft, a motor, a mechanical seal, a twisted rope and a floating ball, the axis of the rotating shaft is perpendicular to the up and down direction, one end of the rotating shaft is arranged in the petrochemical storage tank, and the other end of the rotating shaft is arranged outside the petrochemical storage tank, the rotating shaft is rotatably connected to the tank wall of the petrochemical storage tank through the mechanical seal, one end of the twisted rope is connected to one end of the rotating shaft, and the other end of the twisted rope is connected to the floating ball, so that part of the twisted rope between the floating ball and the rotating shaft is in a straight state, the floating ball is connected to the upper end of the sampling hose, the motor is arranged on the outside of the petrochemical storage tank, the output end of the motor is transmission-connected to the other end of the rotating shaft, and the motor is used to drive the rotating shaft to rotate, so that the twisted rope is wound around the rotating shaft or loosened from the rotating shaft, and the floating ball and the upper end of the sampling hose are lowered or raised.

[0011] According to the sampling device of the embodiment of the utility model, the lifting drive mechanism also includes a winch, the winch is connected to one end of the rotating shaft, the winch is connected to one end of the rope, and the winch is used for winding the rope.

[0012] According to the sampling device of the embodiment of the utility model, it also includes a support seat, one end of the support seat is arranged inside the petrochemical storage tank, and the other end of the support seat is arranged outside the petrochemical storage tank, the support seat is used to be connected to the tank wall of the petrochemical storage tank, one end of the rotating shaft is rotatably connected to one end of the support seat, and the other end of the rotating shaft is rotatably connected to the other end of the support seat.

[0013] According to the sampling device of the embodiment of the utility model, the lifting drive mechanism also includes a guide member, the guide member is connected to the support seat, a guide hole is opened on the guide member, and the guide hole is used for passing part of the rope between the capstan and the float.

[0014] According to the sampling device of the embodiment of the utility model, the adapter is a rotary joint, the rotary joint is arranged on one end of the support seat, one end of the rotating shaft is rotatably connected to the rotary joint, and the lower end of the sampling hose is connected to the rotary joint so that the sampling hose is connected to the suction mechanism through the rotary joint.

[0015] According to the sampling device of the embodiment of the utility model, the sampling hose is spiral-shaped, and the sampling hose is sleeved on the twisted rope.

[0016] According to the sampling device of the embodiment of the utility model, the suction mechanism includes a first pipeline, a second pipeline and a suction pump, one end of the first pipeline is arranged in the petrochemical storage tank and connected to the adapter, the other end of the first pipeline is arranged outside the petrochemical storage tank and connected to the input end of the suction pump, the second pipeline is arranged outside the petrochemical storage tank and connected to the output end of the suction pump, and a first valve is provided on the second pipeline, and the first valve is used to open or close the second pipeline.

[0017] According to the sampling device of the embodiment of the utility model, the suction mechanism also includes an air pump and a third pipeline, the third pipeline is arranged outside the petrochemical storage tank, one end of the third pipeline is connected to the first pipeline, and the other end of the third pipeline is connected to the air pump, and the air pump is used to blow air into the third pipeline to make the petrochemical liquid in one end of the first pipeline, the adapter and the sampling hose flow back into the petrochemical storage tank.

[0018] According to the sampling device of the embodiment of the utility model, a second valve is provided at the connection between the third pipeline and the first pipeline, and the second valve is used to open or close the connection between the third pipeline and the first pipeline.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a petrochemical storage tank and a sampling device according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the lifting drive mechanism in the sampling device of the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the suction mechanism in the sampling device of the embodiment of the utility model;

[0024] Reference numerals:

[0025] Sampling hose 100;

[0026] Adapter 200;

[0027] Suction mechanism 300; first pipeline 310; second pipeline 320; third pipeline 330; first valve 340; second valve 350; air pump 360; suction pump 370;

[0028] Lifting drive mechanism 400; rotating shaft 410; motor 420; mechanical seal 430; twisting rope 440; floating ball 450; capstan 460; guide member 470; support seat 480. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0034] refer to Figure 1 and Figure 2 The sampling device of the utility model comprises:

[0035] A sampling hose 100, the sampling hose 100 is arranged in a petrochemical storage tank;

[0036] The adapter 200 and the suction mechanism 300, the adapter 200 is arranged in the petrochemical storage tank, the suction mechanism 300 is arranged outside the petrochemical storage tank, the lower end of the sampling hose 100 is connected to the suction mechanism 300 through the adapter 200, and the suction mechanism 300 is used to suck the petrochemical liquid in the petrochemical storage tank, so that the petrochemical liquid in the sampling hose 100 and the adapter 200 can be sucked out of the petrochemical storage tank;

[0037] The lifting drive mechanism 400, the output end of the lifting drive mechanism 400 is arranged in the petrochemical storage tank, the output end of the lifting drive mechanism 400 is connected to the upper end of the sampling hose 100, and the lifting drive mechanism 400 is used to drive the upper end of the sampling hose 100 to rise or fall, so that the sampling hose 100 can suck the petrochemical liquid at different heights in the petrochemical storage tank.

[0038] It is understandable that when it is necessary to perform quality inspection and analysis on the petrochemical liquid in the petrochemical storage tank, the suction mechanism 300 is started, and the petrochemical liquid in the petrochemical storage tank can pass through the upper end of the sampling hose 100 and enter the sampling hose 100. Under the continuous suction action of the suction mechanism 300, the petrochemical liquid in the sampling hose 100 flows through the adapter 200 and is sucked out of the petrochemical storage tank, so that the operator can perform quality inspection and analysis on the petrochemical liquid in the petrochemical storage tank. In the process of the sampling hose 100 sucking the petrochemical liquid, the lifting drive mechanism 400 can drive the upper end of the sampling hose 100 to rise or fall, and the sampling hose 100 can suck the petrochemical liquid at different heights in the petrochemical storage tank, so that the petrochemical liquid sucked out of the petrochemical storage tank is more representative, and then the subsequent petrochemical liquid quality inspection and analysis results are more representative and comprehensive, which is conducive to improving the accuracy of the subsequent petrochemical liquid quality inspection and analysis.

[0039] refer to Figure 1 and Figure 2The lifting drive mechanism 400 includes a rotating shaft 410, a motor 420, a mechanical seal 430, a rope 440 and a floating ball 450. The axis of the rotating shaft 410 is perpendicular to the up and down direction and close to the bottom wall of the petrochemical storage tank. One end of the rotating shaft 410 is arranged in the petrochemical storage tank, and the other end of the rotating shaft 410 is arranged outside the petrochemical storage tank. The rotating shaft 410 is rotatably connected to the tank wall of the petrochemical storage tank through the mechanical seal 430. One end of the rope 440 is connected to one end of the rotating shaft 410, and the other end of the rope 440 is connected to the bottom wall of the petrochemical storage tank. The end of the motor 420 is connected to the float 450 so that the part of the rope 440 between the float 450 and the rotating shaft 410 is in a straight state. The float 450 is connected to the upper end of the sampling hose 100. The motor 420 is arranged on the outside of the petrochemical storage tank. The output end of the motor 420 is transmission-connected with the other end of the rotating shaft 410. The motor 420 is used to drive the rotating shaft 410 to rotate so that the rope 440 is wound around the rotating shaft 410 or loosened from the rotating shaft 410, and the float 450 and the upper end of the sampling hose 100 are lowered or raised. It can be understood that the motor 420 drives the rotating shaft 410 to rotate so that the rope 440 can be wound around one end of the rotating shaft 410 or loosened from one end of the rotating shaft 410, so that the float 450 can be lowered or raised, and then the float 450 can drive the upper end of the sampling hose 100 to descend or rise. It should be explained that the mechanical seal 430 is a sealing rotating part. On the one hand, the rotating shaft 410 can be rotatably connected to the tank wall of the petrochemical storage tank through the mechanical seal 430. On the other hand, the mechanical seal 430 can seal the connection between the rotating shaft 410 and the tank wall of the petrochemical storage tank to prevent leakage of the petrochemical storage tank. It should be explained that the float 450 is immersed in the petrochemical liquid, and under the buoyancy of the float 450, the float 450 always has a force to pull the rope 440.

[0040] refer to Figure 2 The lifting drive mechanism 400 further includes a winch 460, which is connected to one end of the rotating shaft 410, and the winch 460 is connected to one end of the rope 440, and the winch 460 is used for winding the rope 440. It can be understood that the motor 420 drives the rotating shaft 410 to rotate, and the rotating shaft 410 drives the winch 460 to rotate, so that the winch 460 can pull or release the rope 440, so that the float 450 and the upper end of the sampling hose 100 can be lowered or raised. On the other hand, the winch 460 can prevent the rope 440 from being directly wound around the rotating shaft 410, which is conducive to improving the stability of pulling and releasing the rope 440.

[0041] refer to Figure 1 and Figure 2The sampling device further includes a support seat 480, one end of which is disposed inside the petrochemical storage tank, and the other end of which is disposed outside the petrochemical storage tank. The support seat 480 is used to be connected to the tank wall of the petrochemical storage tank. One end of the rotating shaft 410 is rotatably connected to one end of the support seat 480, and the other end of the rotating shaft 410 is rotatably connected to the other end of the support seat 480. It can be understood that the two ends of the rotating shaft 410 are rotatably connected to the two ends of the support seat 480, respectively, and the support seat 480 can support the rotating shaft 410, which is conducive to improving the stability of the rotation of the rotating shaft 410.

[0042] refer to Figure 2 The lifting drive mechanism 400 further includes a guide member 470, which is connected to the support seat 480. A guide hole is provided on the guide member 470, and the guide hole is used for passing a portion of the rope 440 between the capstan 460 and the floating ball 450. It can be understood that a portion of the rope 440 between the capstan 460 and the floating ball 450 is passed through the guide hole on the guide member 470, and the hole wall of the guide hole can limit and guide the portion of the rope 440 between the capstan 460 and the floating ball 450, so that the rope 440 can be wound around the capstan 460 in an orderly manner, thereby preventing the rope 440 from shaking or tying.

[0043] refer to Figure 1 and Figure 2 , the adapter 200 is a rotary joint, which is provided on one end of the support seat 480, one end of the rotating shaft 410 is rotatably connected to the rotary joint, and the lower end of the sampling hose 100 is connected to the rotary joint, so that the sampling hose 100 is connected to the suction mechanism 300 through the rotary joint. It can be understood that one end of the rotating shaft 410 is rotatably connected to the rotary joint, the rotary joint is connected to the support seat 480, and the lower end of the sampling hose 100 is connected to the rotary joint. The rotary joint can prevent the sampling hose 100 from rotating due to the rotating shaft 410 during the rotation process, thereby effectively preventing the sampling hose 100 from being entangled.

[0044] refer to Figure 1 and Figure 2 The sampling hose 100 is in a spiral shape, and the sampling hose 100 is sleeved on the rope 440. It can be understood that the spiral sampling hose 100 is sleeved on the rope 440. When the rope 440 pulls or releases the float 450, the sampling hose 100 can be compressed or stretched, thereby preventing the sampling hose 100 from bending during the pulling of the rope 440 and preventing the sampling hose 100 from being blocked. On the other hand, the spiral sampling hose 100 is sleeved on the rope 440, and the rope 440 limits the sampling hose 100, thereby preventing the sampling hose 100 from shaking in a large range and improving the stability of pumping petrochemical liquid.

[0045] refer to Figure 1 and Figure 3 The suction mechanism 300 includes a first pipe 310, a second pipe 320 and a suction pump 370. One end of the first pipe 310 is arranged in the petrochemical storage tank and communicates with the adapter 200. The other end of the first pipe 310 is arranged outside the petrochemical storage tank and communicates with the input end of the suction pump 370. The second pipe 320 is arranged outside the petrochemical storage tank and communicates with the output end of the suction pump 370. A first valve 340 is arranged on the second pipe 320. The first valve 340 is used to open or close the second pipe 320. It can be understood that the first pipe 310 is connected to the tank wall of the petrochemical storage tank, the first valve 340 is opened, the suction pump 370 is turned on, and the petrochemical liquid in the petrochemical storage tank passes through the sampling hose 100, the adapter 200, the first pipe 310 and the suction pump 370 in sequence and finally flows out from the second pipe 320, so that the operator can perform quality inspection and analysis on the petrochemical liquid in the petrochemical storage tank.

[0046] refer to Figure 1 and Figure 3 The suction mechanism 300 further includes an air pump 360 and a third pipe 330. The third pipe 330 is disposed outside the petrochemical storage tank. One end of the third pipe 330 is connected to the first pipe 310, and the other end of the third pipe 330 is connected to the air pump 360. The air pump 360 is used to blow air into the third pipe 330 so that the petrochemical liquid in one end of the first pipe 310, the adapter 200 and the sampling hose 100 flows back into the petrochemical storage tank. It is understandable that when the petrochemical liquid in the petrochemical storage tank needs to be sucked for quality inspection and analysis, the air pump 360 can be turned on first, and the air pump 360 blows air into the third pipe 330 so that the petrochemical liquid in one end of the first pipe 310, the adapter 200 and the sampling hose 100 flows back into the petrochemical storage tank, and then the suction pump 370 is turned on for suction. The air pump 360 can effectively prevent the petrochemical liquid remaining in one end of the first pipe 310, the adapter 200 and the sampling hose 100 from being used for quality detection and analysis, which is beneficial to improving the accuracy of subsequent petrochemical liquid quality detection and analysis.

[0047] refer to Figure 3 A second valve 350 is provided at the connection between the third pipeline 330 and the first pipeline 310, and the second valve 350 is used to open or close the connection between the third pipeline 330 and the first pipeline 310. It is understandable that when the petrochemical liquid does not need to be pumped, the second valve 350 can close the connection between the third pipeline 330 and the first pipeline 310, thereby preventing the petrochemical liquid from flowing to the suction pump 370 and the air pump 360, thereby preventing the air pump 360 from being damaged, and thus helping to increase the service life of the air pump 360 and the suction pump 370.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A sampling device, characterized in that: include: A sampling hose, the sampling hose is arranged in a petrochemical storage tank; An adapter and a suction mechanism, wherein the adapter is disposed in the petrochemical storage tank, the suction mechanism is disposed outside the petrochemical storage tank, the lower end of the sampling hose is connected to the suction mechanism through the adapter, and the suction mechanism is used to suck the petrochemical liquid in the petrochemical storage tank, so that the petrochemical liquid in the sampling hose and the adapter can be sucked out of the petrochemical storage tank; A lifting drive mechanism, wherein the output end of the lifting drive mechanism is arranged in the petrochemical storage tank, and the output end of the lifting drive mechanism is connected to the upper end of the sampling hose. The lifting drive mechanism is used to drive the upper end of the sampling hose to rise or fall, so that the sampling hose can suck the petrochemical liquid at different heights in the petrochemical storage tank.

2. The sampling device according to claim 1, characterized in that: The lifting drive mechanism includes a rotating shaft, a motor, a mechanical seal, a twisted rope and a floating ball. The axis of the rotating shaft is perpendicular to the up and down direction. One end of the rotating shaft is arranged in the petrochemical storage tank, and the other end of the rotating shaft is arranged outside the petrochemical storage tank. The rotating shaft is rotatably connected to the tank wall of the petrochemical storage tank through the mechanical seal. One end of the twisted rope is connected to one end of the rotating shaft, and the other end of the twisted rope is connected to the floating ball, so that part of the twisted rope between the floating ball and the rotating shaft is in a straight state. The floating ball is connected to the upper end of the sampling hose. The motor is arranged on the outside of the petrochemical storage tank, and the output end of the motor is transmission-connected to the other end of the rotating shaft. The motor is used to drive the rotating shaft to rotate, so that the twisted rope is wound around the rotating shaft or loosened from the rotating shaft, and the floating ball and the upper end of the sampling hose are lowered or raised.

3. The sampling device according to claim 2, characterized in that: The lifting drive mechanism also includes a winch, which is connected to one end of the rotating shaft, and is connected to one end of the twisting rope, and the winch is used for winding the twisting rope.

4. The sampling device according to claim 3, characterized in that: It also includes a support seat, one end of which is arranged inside the petrochemical storage tank, and the other end of which is arranged outside the petrochemical storage tank. The support seat is used to be connected to the tank wall of the petrochemical storage tank, one end of the rotating shaft is rotatably connected to one end of the support seat, and the other end of the rotating shaft is rotatably connected to the other end of the support seat.

5. The sampling device according to claim 4, characterized in that: The lifting drive mechanism also includes a guide member, which is connected to the support seat. A guide hole is provided on the guide member, and the guide hole is used for passing part of the winch rope between the winch and the float.

6. The sampling device according to claim 4, characterized in that: The adapter is a rotary joint, which is arranged on one end of the support seat, one end of the rotating shaft is rotatably connected to the rotary joint, and the lower end of the sampling hose is connected to the rotary joint so that the sampling hose is connected to the suction mechanism through the rotary joint.

7. The sampling device according to claim 2, characterized in that: The sampling hose is spiral-shaped and is sleeved on the twisted rope.

8. The sampling device according to claim 1, characterized in that: The suction mechanism includes a first pipeline, a second pipeline and a suction pump, one end of the first pipeline is arranged in the petrochemical storage tank and communicated with the adapter, the other end of the first pipeline is arranged outside the petrochemical storage tank and communicated with the input end of the suction pump, the second pipeline is arranged outside the petrochemical storage tank and communicated with the output end of the suction pump, and a first valve is provided on the second pipeline, and the first valve is used to open or close the second pipeline.

9. The sampling device according to claim 8, characterized in that: The suction mechanism also includes an air pump and a third pipeline. The third pipeline is arranged outside the petrochemical storage tank. One end of the third pipeline is connected to the first pipeline, and the other end of the third pipeline is connected to the air pump. The air pump is used to blow air into the third pipeline to make the petrochemical liquid in one end of the first pipeline, the adapter and the sampling hose flow back into the petrochemical storage tank.

10. The sampling device according to claim 9, characterized in that: A second valve is provided at the connection between the third pipeline and the first pipeline, and the second valve is used to open or close the connection between the third pipeline and the first pipeline.

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