Gas-liquid split-flow multifunctional sampling and measuring device and use method thereof

Abstract

The present invention discloses a gas-liquid shunt type multifunctional sampling and measuring device and a method of using the device, which relates to a device for liquid sampling and a method of using the device for sampling and measurement. The gas-liquid shunt type multifunctional sampling and measuring device comprises a bottle body and a sampling cover on top; the bottle body and the sampling cover are sealed and connected by threads or snaps. The gas-liquid shunt type multifunctional sampling and measuring device has the functions of liquid sampling, sealed storage of samples, and liquid density and temperature measurement. The gas-liquid shunt type multifunctional sampling and measuring device of the present invention is ingenious in design, easy to use, has good detection effect, has multiple uses through different state settings, and has good flexibility of use and application promotion value.

Description

Technical Field

[0001] The invention discloses a gas-liquid split-flow multifunctional sampling and measuring device and a use method thereof, which relates to equipment for liquid sampling and a use method of using the equipment for sampling and measuring. Background Art

[0002] In many occasions, liquid sampling is required, especially in places where oil and liquid chemicals are stored. The representativeness of oil sampling can directly affect the representativeness of oil quality inspection results. The existing samplers have different diameters and injection speeds, but the injection and exhaust are the same during sampling. For example, when sampling in a gasoline tank, the plug of an empty sampler is opened, and the gasoline sample enters the sampler from the sampler port, and the gas in the sampler is blown out from the sampler port. The one-liter gasoline sample entering the one-liter sampler must be subjected to the impact, blowing, and volatilization of one liter of gas. Experiments have found that when gasoline samples are sampled through this type of sampler, their density will increase by one to three thousandths, and the vapor pressure of gasoline will be low. The problem is that this type of sampler is still used to sample and measure the density of gasoline. First, sampling, second, pouring into an oil sample bottle, and third, pouring from the oil sample bottle into a measuring cylinder to measure the density. The gasoline sample has volatilization losses of light components in these three links, and the flash point of jet fuel and diesel will also be higher. The judgment of oil quality is often not accurate enough, so it is necessary to provide a new sampler to meet the sampling needs. Summary of the invention

[0003] In view of this, the present invention provides a gas-liquid diversion type multifunctional sampling and measuring device, which can effectively overcome the shortcomings of existing equipment, achieve accurate sampling without sample inversion and volatilization, and can accurately measure the metering density and other metering quality results of oil and liquid; the gas-liquid diversion type multifunctional sampling and measuring device is suitable for accurate sampling of petrochemical liquids and environmental protection water quality, and has good use and promotion effects.

[0004] The gas-liquid split-flow multifunctional sampling and measuring device comprises a bottle body and a sampling cover on the upper part; the bottle body and the sampling cover are sealed and connected by a thread or a buckle.

[0005] The sampling cover comprises a circular cover body, a sliding through hole is provided at the center of the cover body, and an arc-shaped liquid inlet groove or liquid inlet hole is provided on the side of the sliding through hole; when it is a liquid inlet through hole, the liquid inlet through hole has a plurality of holes of equal size arranged in an arc along the center of the cover body, and the arc of the liquid inlet groove or the liquid inlet through hole is a minor arc; a cover body boss is provided on the periphery of the liquid inlet groove or the liquid inlet through hole; a liquid inlet control valve is inserted into a shaft sleeve with the sliding through hole as the center below the cover body, a partition is provided at the lower end of the liquid inlet control valve, and a hollow exhaust channel is provided at the center above the partition, when the upper surface of the partition is pulled upward to close the sealing cover body boss, the liquid inlet groove or the liquid inlet through hole is closed, and the axial section of the liquid inlet control valve is an inverted T-shape; a valve is installed in the exhaust channel. An inverted T-shaped exhaust control valve is inserted, the top end of the exhaust control valve extends out of the exhaust channel and is fixedly connected to the rope control device, and the lower end of the rope control device is threadedly connected to the exhaust channel on the liquid inlet control valve through a thread; a liquid inlet control valve plate matching the liquid inlet groove or the liquid inlet hole on the cover body is sleeved on the upper surface or lower surface of the cover body with the sliding through hole as the axis. When the cover body is a liquid inlet through groove, the liquid inlet control valve plate is provided with a plurality of corresponding through holes of equal size arranged in an arc shape. When the cover body is a liquid inlet through hole, the liquid inlet control valve plate is provided with a corresponding circular arc groove. By rotating the liquid inlet control valve plate with the sliding through hole as the axis, the closing degree of the liquid inlet groove or the liquid inlet through hole on the cover body can be effectively controlled, thereby controlling the liquid inlet speed.

[0006] When the liquid inlet control valve plate is installed below the cover body, the liquid inlet control valve plate is installed between the cover body and the partition plate of the liquid inlet control valve.

[0007] There is also a bottle body boss on the top of the bottle body that matches the partition of the liquid inlet control valve. When the lower surface of the partition contacts the bottle body boss under the action of gravity, the partition can play a sealing role to seal the sample liquid above the bottle body boss.

[0008] A strip-shaped liquid inlet groove or a continuous liquid inlet hole is opened on the side of the bottom of the bottle body boss. The sample liquid flows into the bottle body along the bottle wall through the liquid inlet groove or the liquid inlet hole, which reduces the impact force during the inflow and prevents splashing droplets from affecting the sampling accuracy.

[0009] The rope control device is composed of a rope hook, a pipe cap, a spring, a spring sleeve, a push rod and a locking tube; a hook groove with a hook-shaped opening in the middle of the spring sleeve is provided; a pipe cap is installed at the upper end of the spring sleeve, and a spring is installed in the cavity of the spring sleeve, one end of the spring presses against the inner wall of the pipe cap, and the other end pushes the K-shaped push rod, and the tail end of the K-shaped push rod is fixedly connected to the exhaust control valve and fixed with side screws; when the exhaust control valve is closed, the rope hook enters the hook groove and is stuck in the middle of the K-shaped push rod, and a locking tube is provided at the lower part of the opening of the spring sleeve, and the upward adjustment of the locking tube can prevent the rope hook from being unhooked, and the tail end of the spring sleeve is connected to the liquid inlet control valve through a thread and fixed with a side screw, the spring sleeve is communicated with the exhaust duct, and the top end of the rope hook passes through the pipe cap and is connected to the sampling rope.

[0010] The bottom of the K-shaped ejector pin is provided with a groove for assisting exhaust, so as to facilitate further rapid exhaust of the gas in the bottle.

[0011] The bottle body is a cylindrical bottle body. Furthermore, the bottle body is formed by sealingly connecting a cylindrical bottle body and a disc-shaped bottle bottom. The bottle bottom is made of nickel alloy, which, compared with stainless steel, will not react with oil, causing the oil to deteriorate after long-term storage.

[0012] The bottle body and the sampling cover are preferably connected by a threaded seal.

[0013] The present invention can also utilize a sealing cover to replace a sampling cover, so as to seal and store the sample liquid in the bottle.

[0014] The sealing cover has an upper cover, a threaded hole is opened in the middle of the upper cover, an adjusting knob is screwed on the upper surface of the upper cover through the threaded hole, a hard plate is padded inside the sealing cover, and a sealing ring is tightly attached to the lower part of the hard plate.

[0015] The bottle body is made of a transparent material, preferably glass, and more preferably tempered glass, which can effectively prevent external impact and withstand the extrusion of the sample liquid on the bottle body to prevent deformation.

[0016] The gas-liquid split-flow multifunctional sampling and measuring device has the functions of liquid sampling, sealed storage of samples and liquid density and temperature measurement.

[0017] Liquid sampling includes bottom sampling, spot sampling and full-course sampling;

[0018] The method for taking liquid bottom sample and spot sample by using the gas-liquid split flow multifunctional sampling and measuring device of the present invention is as follows:

[0019] The cover body on which the rope control device is fixedly installed is sealedly connected to the bottle body;

[0020] According to the liquid inlet speed requirement, rotate the liquid inlet control valve plate to the predetermined position;

[0021] The rope hook is inserted into the K-shaped top rod, and the rope hook and the K-shaped top rod are in a locked state;

[0022] The sample rope is taken out by hand, and the gas-liquid split-flow multifunctional sampling and measuring device of the present invention is smoothly placed into the container to be sampled;

[0023] After the sampling and measuring device is lowered to the predetermined depth, the sampling rope is quickly lifted up for a distance and lowered to the original position. The spring in the spring sleeve is used to push the K-shaped push rod downward to pop out the rope hook and unlock it.

[0024] The liquid inlet control valve moves downward under the action of gravity, leaving the cover body boss and tightly sealing the bottle body boss. At the same time, the exhaust control valve moves downward to open the exhaust channel. The sample liquid enters through the liquid inlet groove or the liquid inlet hole on the side of the sliding through hole, and flows smoothly into the strip-shaped liquid inlet groove or the continuous liquid inlet hole on the side of the bottle body boss along the partition on the liquid inlet control valve. The sample liquid flows in along the bottle wall of the bottle body through the liquid inlet groove or the liquid inlet hole, which reduces the impact force when flowing in.

[0025] The gas to be discharged in the bottle is discharged through the exhaust pipe at the center of the partition, and the gas is further discharged upward through the gap in the spring sleeve;

[0026] After the gas is completely discharged and the bottle is filled with sample liquid, pick up the sampling rope and take out the sampling container.

[0027] A method for taking full-course samples of a gas-liquid split-flow multifunctional sampling and measuring device is as follows:

[0028] The sampling cover with the rope control device fixedly installed is sealed and connected to the bottle body;

[0029] According to the liquid inlet speed requirement, rotate the adjustment slot on the liquid inlet adjustment plate to the predetermined position;

[0030] The rope hook is inserted into the K-shaped top rod, the rope hook and the K-shaped top rod are in a locked state, and the lock tube is adjusted downward to keep the hook slot open;

[0031] The sampling rope is extracted by hand, and the gas-liquid split-flow multifunctional liquid sampler of the present invention is smoothly placed into the container to be sampled;

[0032] After the sampler is lowered to a depth close to the bottom of the container, the sampling rope is quickly lifted up for a distance and lowered to the original position. The spring in the spring sleeve is used to push the K-shaped push rod downward to pop out the rope hook and unlock it.

[0033] The through-hole shaft moves downward under the action of gravity, and the liquid inlet control valve plate moves downward, opening the liquid inlet channel 1 and the exhaust chamber, and the sample liquid enters through the liquid inlet channel 1 on the cover body, flows smoothly along the drainage plate, and then flows slowly along the bottle wall of the bottle body through the liquid inlet groove or the liquid inlet hole on the drainage plate, thereby reducing the impact force when flowing in;

[0034] The gas to be discharged in the bottle body is discharged through the exhaust pipe of the through-hole shaft, and the gas is further discharged upward through the gap in the spring sleeve;

[0035] While the bottle is being filled with liquid and exhausted, lift the sampling rope upwards at a uniform speed until the container to be sampled is completely lifted out. When the container is completely taken out, the sample liquid injected into the bottle cannot fill the bottle (if it is completely full, the full-layer sampling fails and resampling is required until it is not full).

[0036] The method for sealing and storing samples using the gas-liquid split-flow multifunctional sampling and measuring device of the present invention is as follows:

[0037] The sampling cover in the gas-liquid split multifunctional sampling and measuring device that has completed the liquid sample sampling is removed, and the sealing cover is replaced, and the sealing cover is connected to the bottle body, and then the adjustment knob of the sealing cover is rotated downward to push the hard plate downward for a distance so that the hard plate is pressed against the bottle body.

[0038] When it is necessary to take out the liquid sample in the storage, first rotate the adjusting knob of the sealing cover upwards, loosen the hard plate upwards for a distance, and then the sealing cover can be easily loosened and the sample liquid can be taken out.

[0039] The method for using the gas-liquid split flow multifunctional sampling and measuring device of the present invention to test the density or temperature of the sample stored in the bottle is as follows:

[0040] Open the bottle containing the sample liquid and put the glass density meter in.

[0041] When you need to measure the temperature, just put in a glass thermometer.

[0042] The invention discloses a gas-liquid split flow multifunctional sampling and measuring device, which is ingenious in design, easy to use, has good use detection effect, has multiple uses through different state settings, and has good use flexibility and application promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below in conjunction with the accompanying drawings:

[0044] Figure 1 It is a schematic structural diagram of the gas-liquid split flow multifunctional sampling and measuring device of the present invention.

[0045] Figure 2 It is a schematic diagram of the structure of the sampling cover and the rope control device in the gas-liquid split flow multifunctional sampling and measuring device of the present invention.

[0046] Figure 3 It is a schematic cross-sectional structural diagram of the sampling cover in the gas-liquid split flow multifunctional sampling and measuring device of the present invention.

[0047] Figure 4 It is a schematic diagram of the top view of the sampling cover in the gas-liquid split flow multifunctional sampling and measuring device of the present invention.

[0048] Figure 5 It is a structural schematic diagram of the liquid inlet control valve plate in the gas-liquid split flow multifunctional sampling and measuring device of the present invention.

[0049] Figure 6 It is a schematic cross-sectional structural diagram of the sealing cover in the gas-liquid split flow multifunctional sampling and measuring device of the present invention. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1-6 The present invention is described in further detail.

[0051] Reference Figure 1 The gas-liquid split flow multifunctional sampling and measuring device comprises a bottle body 1 and a sampling cover on the upper part; the bottle body 1 and the sampling cover are sealed and connected by threads or buckles.

[0052] The sampling cover comprises a circular cover body 2, a sliding through hole 3 is provided at the center of the cover body 2, and an arc-shaped liquid inlet groove or liquid inlet hole 4 is provided on the side of the sliding through hole 3; when it is a liquid inlet through hole, the liquid inlet through hole has a plurality of holes of equal size arranged in an arc along the center of the cover body, and the arc of the liquid inlet groove or the liquid inlet through hole is a minor arc; a cover body boss 2-1 is provided on the periphery of the liquid inlet groove or the liquid inlet through hole 4; a liquid inlet control valve 5 is inserted into the shaft sleeve with the sliding through hole 3 as the center below the cover body 2, and a partition 5-1 is provided at the lower end of the liquid inlet control valve 5, and a hollow exhaust channel 5-2 is provided at the center above the partition 5-1, when the upper surface of the partition 5-1 is pulled upward to seal the cover body boss 2-1, the liquid inlet groove or the liquid inlet through hole 4 is closed, and the axial section of the liquid inlet control valve 5 is an inverted T-shape; in the exhaust channel An inverted T-shaped exhaust control valve 6 is installed in 5-2, the top end of the exhaust control valve 6 extends out of the exhaust channel 5-2 and is fixedly connected to the rope control device, and the lower end of the rope control device is threadedly connected to the exhaust channel 5-2 on the liquid inlet control valve 5 through a thread; a liquid inlet control valve plate 7 matching the liquid inlet groove or the liquid inlet hole 2-1 on the cover body 2 is sleeved on the upper surface or lower surface of the cover body 2 with the sliding through hole 3 as the axis. When the cover body 2 is a liquid inlet groove, the liquid inlet control valve plate 7 is provided with a plurality of arc-shaped through holes of equal size corresponding thereto. When the cover body 2 is a liquid inlet through hole, the liquid inlet control valve plate 7 is provided with a corresponding arc-shaped through groove. By rotating the liquid inlet control valve plate 7 with the sliding through hole 3 as the axis, the closing degree of the liquid inlet groove or the liquid inlet through hole on the cover body 2 can be effectively controlled, thereby controlling the liquid inlet speed.

[0053] When the liquid inlet control valve plate 7 is installed below the cover body 2 , the liquid inlet control valve plate 7 is installed between the cover body 2 and the partition plate 5 - 1 of the liquid inlet control valve 5 .

[0054] There is also a bottle body boss 1-1 above the bottle body 1, which cooperates with the partition 5-1 of the liquid inlet control valve 5. When the lower surface of the partition 5-1 contacts the bottle body boss 1-1 under the action of gravity, the partition 5-1 can play a sealing role to seal the sample liquid in the bottle body boss 1-1.

[0055] A strip-shaped liquid inlet groove 1-2 or a continuous liquid inlet hole is provided on the side of the bottom of the bottle body boss 1-1. The sample liquid flows into the bottle body 1 along the bottle wall through the liquid inlet groove 1-2 or the liquid inlet hole, which reduces the impact force during the inflow and prevents splashing droplets from affecting the sampling accuracy.

[0056] The rope control device is composed of a rope hook 11, a pipe cap 12, a spring 13, a spring sleeve 14, a K-shaped push rod 18, and a lock tube 16; a hook groove 17 with a hook-shaped opening in the middle of the spring sleeve 14 is provided; the pipe cap 12 is installed on the upper end of the spring sleeve 14, and the spring 13 is installed in the cavity of the spring sleeve 14, one end of the spring 13 presses against the inner wall of the pipe cap 12, and the other end pushes the K-shaped push rod 18, and the tail end of the K-shaped push rod 18 is fixedly connected to the exhaust control valve 6 and fixed by the side screw 18-2; when the exhaust control valve 6 is closed, the rope hook 11 enters the hook groove 17 and is stuck in the middle of the K-shaped push rod 18. The lower part of the opening of the spring sleeve 14 is provided with a lock tube 16, and the upward adjustment of the lock tube 16 can prevent the rope hook 11 from being unhooked. The tail end of the spring sleeve 14 is connected to the liquid inlet control valve 5 through a thread and fixed with the side screw 5-3. pipe Similarly, the top end of the rope hook 11 passes through the pipe cap 12 and is connected to a sampling rope 19.

[0057] The bottom of the K-shaped top rod 18 has a groove 18 - 1 for auxiliary exhaust, which facilitates further rapid exhaust of the gas in the bottle body 1 .

[0058] The bottle body 1 is a cylindrical bottle body. Furthermore, the bottle body 1 is formed by sealingly connecting a cylindrical bottle body and a disc-shaped bottle bottom 20. The bottle bottom 20 is made of nickel alloy, which, compared with stainless steel, will not react with oil, causing the oil to deteriorate after long-term storage.

[0059] The bottle body 1 and the sampling cover are preferably connected in a threaded sealing manner.

[0060] The present invention can also utilize a sealing cover to replace the sampling cover, so as to seal and store the sample liquid in the bottle body 1.

[0061] The sealing cover comprises an upper cover 9, a threaded hole is provided in the middle of the upper cover 9, an adjusting knob 10 is screwed on the upper surface of the upper cover 9 through the threaded hole, a hard plate 8 is padded inside the sealing cover, and a sealing ring 21 is tightly attached to the lower part of the hard plate 8.

[0062] The bottle body 1 is made of a transparent material, preferably glass, and more preferably tempered glass, which can effectively prevent external impact and withstand the extrusion of the sample liquid on the bottle body to prevent deformation.

[0063] The gas-liquid split-flow multifunctional sampling and measuring device has the functions of liquid sampling, sealed storage of samples and liquid density and temperature measurement.

[0064] The method for liquid sampling using the gas-liquid split flow multifunctional sampling and measuring device of the present invention is as follows:

[0065] The cover body 2 on which the rope control device is fixedly installed is sealedly connected to the bottle body 1;

[0066] According to the liquid inlet speed requirements, move the liquid inlet control valve plate 7 Rotate to a predetermined position;

[0067] The rope hook 11 is inserted into the K-shaped top rod 18, and the rope hook 11 and the K-shaped top rod 18 are in a locked state;

[0068] Use your hands to extract the sample rope 19, and steadily place the gas-liquid split-flow multifunctional sampling and measuring device of the present invention into the container to be sampled;

[0069] After the sampling and measuring device is lowered to a predetermined depth, the sampling rope 19 is quickly lifted up a distance and lowered to the original position, and the spring 13 in the spring sleeve 14 is used to push the K-shaped push rod 18 downward to pop out the rope hook 11 and unlock it;

[0070] The liquid inlet control valve 5 moves downward under the action of gravity, leaving the cover body boss 2-1, and tightly seals the bottle body boss 1-1. At the same time, the exhaust control valve 6 moves downward to open the exhaust channel 5-2. The sample liquid enters through the liquid inlet groove or the liquid inlet hole 4 on the side of the sliding hole 3, and flows smoothly into the strip-shaped liquid inlet groove 1-2 or the continuous liquid inlet hole on the side of the bottle body boss 1-1 along the partition 5-1 on the liquid inlet control valve 5. The sample liquid flows in along the bottle wall of the bottle body 1 through the liquid inlet groove 1-2 or the liquid inlet hole, which reduces the impact force when flowing in.

[0071] The gas to be discharged in the bottle body 1 is discharged through the exhaust pipe 5-2 at the center of the partition 5-1, and the gas is further discharged upward through the gap in the spring sleeve 14;

[0072] After the gas is completely discharged and the bottle body 1 is filled with sample liquid, the sampling rope 19 is lifted to take out the sampling container.

[0073] Liquid sampling includes bottom sampling, spot sampling and full-course sampling;

[0074] The method for taking liquid bottom sample and spot sample by using the gas-liquid split flow multifunctional sampling and measuring device of the present invention is as follows:

[0075] The sampling cover with the rope control device fixedly installed is sealed and connected to the bottle body;

[0076] According to the liquid inlet speed requirement, rotate the adjustment slot on the liquid inlet adjustment plate to the predetermined position;

[0077] The rope hook is inserted into the K-shaped top rod, the rope hook and the K-shaped top rod are in a locked state, and the lock tube is adjusted downward to keep the hook slot open;

[0078] The sampling rope is extracted by hand, and the gas-liquid split-flow multifunctional liquid sampler of the present invention is smoothly placed into the container to be sampled;

[0079] After the sampler is lowered to a depth close to the bottom of the container, the sampling rope is quickly lifted up for a distance and lowered to the original position. The spring in the spring sleeve is used to push the K-shaped push rod downward to pop out the rope hook and unlock it.

[0080] The through-hole shaft moves downward under the action of gravity, and the liquid inlet control valve plate moves downward, opening the liquid inlet channel 1 and the exhaust chamber, and the sample liquid enters through the liquid inlet channel 1 on the cover body, flows smoothly along the drainage plate, and then flows slowly along the bottle wall of the bottle body through the liquid inlet groove or the liquid inlet hole on the drainage plate, thereby reducing the impact force when flowing in;

[0081] The gas to be discharged in the bottle body is discharged through the exhaust pipe of the through-hole shaft, and the gas is further discharged upward through the gap in the spring sleeve;

[0082] While the bottle is being filled with liquid and exhausted, lift the sampling rope upwards at a uniform speed until the container to be sampled is completely lifted out. When the container is completely taken out, the sample liquid injected into the bottle cannot fill the bottle (if it is completely full, the full-layer sampling fails and resampling is required until it is not full).

[0083] The method for sealing and storing samples using the gas-liquid split-flow multifunctional sampling and measuring device of the present invention is as follows:

[0084] Remove the sampling cover in the gas-liquid diversion multifunctional sampling and measuring device that has completed liquid sample sampling, replace it with the sealing cover 9, connect the sealing cover to the bottle body 1, and then rotate the adjusting knob 10 of the sealing cover downward to push the hard plate 8 downward for a distance so that the hard plate 8 presses the bottle body 1 tightly.

[0085] When it is necessary to take out the liquid sample stored in the storage, the adjusting knob 10 of the sealing cover is first rotated upwards, and the hard plate 8 is loosened upwards for a distance, and then the sealing cover can be easily loosened and the sample liquid can be taken out.

[0086] The method for using the gas-liquid split flow multifunctional sampling and measuring device of the present invention to test the density or temperature of the sample stored in the bottle is as follows:

[0087] Open the bottle 1 containing the sample liquid and put the glass density meter in it.

[0088] When you need to measure the temperature, just put in a glass thermometer.

Claims

1. A gas-liquid split-flow multifunctional sampling and measuring device, characterized in that: It includes a bottle body and a sampling cover on the top; the bottle body and the sampling cover are sealed and connected by threads or buckles; The sampling cover comprises a circular cover body, a sliding through hole is provided at the center of the cover body, and an arc-shaped liquid inlet groove or liquid inlet hole is provided on the side of the sliding through hole; when it is a liquid inlet through hole, the liquid inlet through hole has a plurality of holes of equal size arranged in an arc along the center of the cover body, and the arc of the liquid inlet groove or the liquid inlet through hole is a minor arc; a cover body boss is provided on the periphery of the liquid inlet groove or the liquid inlet through hole; a liquid inlet control valve is inserted into a shaft sleeve with the sliding through hole as the center below the cover body, a partition is provided at the lower end of the liquid inlet control valve, and a hollow exhaust channel is provided at the center above the partition, when the upper surface of the partition is pulled upward and pressed against the sealing cover body boss, the liquid inlet groove or the liquid inlet through hole is closed, and the axial section of the liquid inlet control valve is an inverted T-shape; in the exhaust channel An inverted T-shaped exhaust control valve is installed, the top end of the exhaust control valve extends out of the exhaust channel and is fixedly connected to the rope control device, and the lower end of the rope control device is threadedly connected to the exhaust channel on the liquid inlet control valve through a thread; a liquid inlet control valve plate matching the liquid inlet groove or the liquid inlet hole on the cover body is sleeved on the upper surface or the lower surface of the cover body with the sliding through hole as the axis. When the cover body is the liquid inlet groove, the liquid inlet control valve plate is provided with a plurality of arc-shaped through holes of equal size corresponding thereto; when the cover body is the liquid inlet through hole, the liquid inlet control valve plate is provided with a corresponding arc-shaped through groove. By rotating the liquid inlet control valve plate with the sliding through hole as the axis, the closing degree of the liquid inlet groove or the liquid inlet through hole on the cover body can be effectively controlled, thereby controlling the liquid inlet speed; When the liquid inlet control valve plate is installed under the cover body, the liquid inlet control valve plate is installed between the cover body and the partition of the liquid inlet control valve; A bottle body boss matched with the partition of the liquid inlet control valve is provided above the bottle body. When the lower surface of the partition contacts the bottle body boss under the action of gravity, the partition can play a sealing role to seal the sample liquid above the bottle body boss. A strip-shaped liquid inlet groove or a continuous liquid inlet hole is opened on the side of the bottom of the bottle body boss. The sample liquid flows into the bottle body along the bottle wall through the liquid inlet groove or the liquid inlet hole, which reduces the impact force during the inflow and prevents splashing droplets from affecting the sampling accuracy.

2. A gas-liquid split flow multifunctional sampling and measuring device according to claim 1, characterized in that: The rope control device is composed of a rope hook, a pipe cap, a spring, a spring sleeve, a K-shaped push rod, and a locking tube; the middle part of the spring sleeve is provided with a hook groove with an axial cross-section of a hook-shaped opening; the upper end of the spring sleeve is provided with a pipe cap, and a spring is installed in the cavity of the spring sleeve, one end of the spring presses against the inner wall of the pipe cap, and the other end pushes the K-shaped push rod, and the tail end of the K-shaped push rod is fixedly connected to the exhaust control valve and fixed with a side screw; when the exhaust control valve is closed, the rope hook enters the hook groove and is stuck in the middle part of the K-shaped push rod, and a locking tube is provided at the lower part of the opening of the spring sleeve, and the upward adjustment of the locking tube can prevent the rope hook from being unhooked, and the tail end of the spring sleeve is connected to the liquid inlet control valve through a thread and fixed with a side screw, the spring sleeve is communicated with the exhaust through pipe, and the top end of the rope hook passes through the pipe cap and is connected with a sampling rope; The bottom of the K-shaped ejector pin is provided with a groove for assisting exhaust, so as to facilitate and quickly discharge the gas in the bottle.

3. The gas-liquid split-flow multifunctional sampling and measuring device according to claim 1, characterized in that: The bottle body is a cylindrical bottle body, which is formed by sealingly connecting a cylindrical bottle body and a disc-shaped bottle bottom, and the bottle bottom is made of nickel alloy; The bottle body and the sampling cover are connected by thread sealing.

4. The gas-liquid split flow multifunctional sampling and measuring device according to claim 1, characterized in that: The sealing cover replaces the sampling cover to seal and store the sample liquid in the bottle; The sealing cover has an upper cover, a threaded hole is opened in the middle of the upper cover, an adjusting knob is screwed on the upper surface of the upper cover through the threaded hole, a hard plate is padded inside the sealing cover, and a sealing ring is tightly attached to the lower part of the hard plate.

5. A method for liquid sampling using the gas-liquid split flow multifunctional sampling and measuring device as claimed in claim 2, characterized in that: Liquid sampling includes bottom sampling and spot sampling; The method of taking liquid bottom sample and spot sample by using gas-liquid split multifunctional sampling and measuring device is as follows: The cover body on which the rope control device is fixedly installed is sealedly connected to the bottle body; According to the liquid inlet speed requirement, rotate the liquid inlet control valve plate to the predetermined position; The rope hook is inserted into the K-shaped top rod, and the rope hook and the K-shaped top rod are in a locked state; Use your hands to extract the sample rope and steadily place the gas-liquid split-flow multifunctional sampling and measuring device into the container to be sampled; After the sampling and measuring device is lowered to the predetermined depth, the sampling rope is quickly lifted up for a distance and lowered to the original position. The spring in the spring sleeve is used to push the K-shaped push rod downward to pop out the rope hook and unlock it. The liquid inlet control valve moves downward under the action of gravity, leaving the cover body boss and tightly sealing the bottle body boss. At the same time, the exhaust control valve moves downward to open the exhaust channel. The sample liquid enters through the liquid inlet groove or the liquid inlet hole on the side of the sliding through hole, and flows smoothly into the strip-shaped liquid inlet groove or the continuous liquid inlet hole on the side of the bottle body boss along the partition on the liquid inlet control valve. The sample liquid flows in along the bottle wall of the bottle body through the liquid inlet groove or the liquid inlet hole, which reduces the impact force when flowing in. The gas to be discharged in the bottle is discharged through the exhaust channel at the center of the partition, and the gas is discharged upward through the gap in the spring sleeve; After the gas is completely discharged and the bottle is filled with sample liquid, pick up the sampling rope and take out the sampling container.

6. A method for sealing and storing samples using the gas-liquid split flow multifunctional sampling and measuring device as claimed in claim 4, characterized in that: Remove the sampling cover of the gas-liquid split-flow multifunctional sampling and measuring device that has completed the liquid sample sampling, replace it with a sealing cover, connect the sealing cover to the bottle body, and then rotate the adjustment knob of the sealing cover downward to push the hard plate downward for a distance so that the hard plate presses the bottle body; When it is necessary to take out the liquid sample in the storage, first rotate the adjusting knob of the sealing cover upwards, loosen the hard plate upwards for a distance, and then the sealing cover can be easily loosened and the sample liquid can be taken out.

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