Sampling emptying liquid recycling device

Abstract

The utility model relates to a sampling emptying liquid recycling device which is provided with a sampling flow path and a pumpback pump, and the pumpback pump is respectively connected with a four-way connector and a waste liquid recycling box through a pumpback pump control valve and a check valve; a fixed vertical pipe, a sampling transverse pipe, a sampling valve and a sampling pipe are arranged in the sampling process, and the two ends of the sampling transverse pipe are connected with the four-way connector and the fixed vertical pipe respectively; the sampling process 11 is connected with a waste liquid recycling box through a sampling pipe and is connected with a sampling pipeline through a fixed vertical pipe. Time and labor waste caused by manual pouring of the sampled waste liquid is avoided, the workload of workers is remarkably reduced, and the labor intensity of the workers is reduced. Environmental pollution caused by the fact that an open container contains waste liquid is avoided; and the problem of inaccurate liquid sample test data caused by small sampling emptying liquid amount is avoided. The sampling working efficiency is improved, the quality of the sampled liquid sample is ensured, the accuracy of test data is ensured, and the management level of oil and water wells is improved.

Description

Technical Field

[0001] The utility model relates to a sampling and venting processing device in the petroleum industry, in particular to a sampling and venting liquid circulation recovery device. Background Art

[0002] When taking water samples at the joint stations and produced water stations in the petroleum industry, the venting liquid has nowhere to be discharged due to the lack of a sewage system or the corrosion and blockage of the sewage pipeline. In this case, most people choose to use barrels to hold the venting liquid. The disadvantages of this are: first, it increases the labor intensity of employees; second, using open barrels to hold waste liquid does not meet environmental protection requirements; third, it is easy to make operators feel lazy and produce lazy behavior, because the waste liquid in the barrels must be transported and processed, which artificially causes the sampling to be incompletely emptied, affecting the accuracy of sampling.

[0003] Whenever a joint station or produced water station takes oil or water samples, it is usually necessary to drain the dead oil or dead water and impurities in the sampling pipeline in order to obtain accurate sampling, especially when taking produced water samples.

[0004] In order to ensure the accuracy of water sampling, it is stipulated that before taking water samples, the sampling valve should be opened, and the water should flow at a rate of 5-6L / min for 3 minutes before sampling. Generally, the waste liquid after sampling enters the recovery system through a funnel and a sewage pipeline. Due to different sampling locations, the original sewage pipeline is blocked and cannot be used because of the long distance or rust, scaling and other reasons; and many sampling points do not have a sewage system. The dirty oil or produced water generated during sampling can only be collected in barrels and manually recovered and transported to the sludge pool. The distance is long, time-consuming and labor-intensive, which increases the workload and labor intensity of employees. At the same time, open-mouthed waste liquid does not meet environmental protection requirements. If the sampling is not completely emptied, it will seriously affect the accuracy of the test data.

[0005] After searching, the following devices are related to waste liquid recovery and storage: Patent application number: CN202321907726.4 discloses a laboratory waste liquid storage device, which includes a high-temperature waste liquid tank, a first cover plate, a connecting pipe and a waste liquid storage tank; the top of the high-temperature waste liquid tank has a first inlet that allows external high-temperature liquid to enter, the first cover plate is connected to the high-temperature waste liquid tank, and can switch between a first position covering the first inlet and a second position opening the first inlet; the high-temperature waste liquid tank is connected to the waste liquid storage tank through a connecting pipe, so that the high-temperature liquid entering the high-temperature waste liquid tank can enter the waste liquid storage tank through the connecting pipe after cooling down. It can avoid direct contact between the high-temperature liquid and the waste liquid volatiles in the waste liquid storage tank, thereby preventing fire and eliminating safety hazards.

[0006] However, the above device still has the following defects: the device only provides a storage device for laboratory waste liquid. Although it eliminates the direct contact between high-temperature liquid and waste liquid volatiles, prevents fire and eliminates safety hazards, if too much waste liquid is stored, it still needs to be transported and processed by a professional waste liquid treatment company, which is time-consuming and labor-intensive and increases the labor intensity of employees.

[0007] Patent application number: CN202022874559.0 discloses a laboratory sink and wastewater collection device, which includes a sink with a drain port at the bottom of the sink, which is connected to a sewer pipe, and a UPVC electric L-type ball valve is provided at the lower end of the sewer pipe to divide the pipeline into two paths. After being diverted by the L-type ball valve, the sewer pipe is connected to the laboratory waste liquid storage tank through the laboratory waste liquid pipe and to the washing water storage tank through the washing water pipe. The separate collection of laboratory waste liquid and washing water is realized, which reduces the amount of laboratory wastewater generated, saves the cost of hazardous waste disposal, and creates significant benefits; at the same time, the washing water is simply treated and used for greening irrigation of the unit's lawn, realizing the reuse of water resources;

[0008] However, the above device collects waste liquid in the laboratory and can only be used in the laboratory.

[0009] Outdoor sampling devices still need to be developed and improved. Summary of the invention

[0010] The purpose of the utility model is to provide a sampling venting liquid recycling device, which can recycle the venting liquid, avoid the time-consuming and laborious manual dumping of the waste liquid after sampling, avoid the environmental pollution caused by using open containers to hold the waste liquid, and avoid the problem of inaccurate liquid sample test data caused by the small amount of sampling venting liquid. Improve the sampling work efficiency and ensure the accuracy of the sampling test data.

[0011] The technical solution of the utility model is: a sampling and venting liquid circulation recovery device, including a waste liquid recovery tank, wherein: a sampling process and a withdrawal pump are provided, and the withdrawal pump is respectively connected to a four-way joint and a waste liquid recovery tank through a withdrawal pump control valve and a check valve;

[0012] The sampling process is provided with a fixed vertical pipe, a sampling horizontal pipe, a sampling valve and a sampling tube. The two ends of the sampling horizontal pipe are respectively connected to the four-way joint and the fixed vertical pipe; the sampling process 11 is connected to the waste liquid recovery tank through the sampling tube and connected to the sampling pipeline through the fixed vertical pipe.

[0013] Preferably, a three-way pipe and a liquid sample discharge pipe are also provided in the sampling process, and the fixed vertical pipe is connected to the process cross pipe, the four-way joint and the liquid sample discharge pipe in sequence through the three-way pipe; the liquid sample discharge pipe is connected to the upper end interface of the four-way joint.

[0014] Preferably, a sampling main valve is also provided in the process cross pipe between the three-way pipe and the four-way joint; the sampling valve is arranged in the liquid sample discharge pipe, and the sampling pipe is connected to the sampling valve via a quick connector.

[0015] Preferably, the left interface of the four-way connector is connected to the sampling cross tube, the right interface is connected to the pressure gauge stop valve through an elbow and is connected to the pressure gauge through the pressure gauge stop valve; the upper end interface of the four-way connector is connected to the liquid sample discharge pipe and the lower end interface is connected to the backdraft pump control valve and is connected to the backdraft pump and the check valve in turn.

[0016] Preferably, the sampling main valve is connected to the process cross pipe on the rear side of the three-way pipe through a movable joint; in the venting cycle recovery device, all components except the back-drawing pump and the liquid flow port are made of stainless steel.

[0017] Preferably, the back-up pump is a hand-cranked civil air defense pump.

[0018] Preferably, the sampling tube is a metal hose.

[0019] Preferably, a liquid level gauge is provided in the box body of the waste liquid recovery box, and a support leg is provided at the lower end of the box body of the waste liquid recovery box, and a universal wheel is installed at the lower end of the support leg.

[0020] Preferably, the top of the waste liquid recovery box is provided with a liquid flow port connected by a flange, the liquid flow port is made of non-metallic material and is provided with a fixed pillar and a sealing cover, one end of the sealing cover is movably connected to a rotating shaft fixed on the flange, and the other end is movably connected to a fixed pillar fixed on the flange through a connecting hook; a seal is installed in the seal embedding groove on the back of the sealing cover.

[0021] Preferably, the check valve is provided with a check valve connecting flange, a one-way flow cover and a flow cover fixing wing, the one-way flow cover and the bottom ring provided with the flow cover fixing wing are manufactured integrally, and the one-way flow cover and the bottom ring are made of rubber material; the bottom ring in the one-way flow cover is embedded in the sealing cover embedding groove on the outer periphery of the center hole of the check valve connecting flange; the flow cover fixing wing is fixed in the fixing groove of the check valve connecting flange; the check valve is connected to the flange plate of the return pipeline connected to the waste liquid recovery tank below through the check valve connecting flange.

[0022] Compared with the prior art, the remarkable use effects of the utility model are: 1. It avoids the time-consuming and laborious manual dumping of waste liquid after sampling, significantly reduces the workload of employees, and reduces the labor intensity of employees.

[0023] 2. Avoid environmental pollution caused by open containers containing waste liquid.

[0024] 3. It avoids the problem of inaccurate liquid sample test data caused by small amount of liquid discharged during sampling.

[0025] 4. It improves the sampling efficiency, ensures the quality of the liquid samples, ensures the accuracy of the test data, and improves the management level of oil and water wells.

[0026] 5. The device has a simple structure and is easy to operate. It can be quickly connected according to the location of the oil sample and water sample to achieve rapid recovery.

[0027] 6. This device is safe to use, energy-saving and environmentally friendly, greatly reduces the labor intensity of workers, improves work efficiency and economic benefits, and has significant use effect and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the structure and working principle of the utility model.

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle liquid flow port.

[0031] Figure 3 yes Figure 2 Schematic diagram of the structure on the reverse side of the sealing cover in the middle liquid flow port.

[0032] Figure 4 yes Figure 1 Schematic diagram of the structure of a check valve.

[0033] In the figure: waste liquid recovery box 1; liquid flow port 2, fixed support 2-1, sealing cover 2-2, sealing 2-3; sampling tube 3, quick connector 4, sampling valve 5, pressure gauge 6, pressure gauge stop valve 7, backflow pump control valve 8, pressing rod 9, backflow pump 10; sampling process 11, fixed vertical pipe 11-1, process horizontal pipe 11-2, sampling main valve 11-3, liquid sample discharge pipe 11-4, movable joint 11-5; sampling pipeline 12, universal wheel 13, liquid level meter 14; check valve 15, check valve connecting flange 15-1, one-way flow cover 15-2, flow cover fixed wing 15-3. DETAILED DESCRIPTION

[0034] The accompanying drawings are for reference and illustration only and are not intended to limit the scope of protection of the present utility model. The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] See also Figure 1-Figure 4 A sampling and venting liquid circulation recovery device comprises a waste liquid recovery tank 1, wherein: a sampling process 11 and a back-drawing pump 10 are provided, and the back-drawing pump 10 is connected to a four-way joint and the waste liquid recovery tank 1 through a back-drawing pump control valve 8 and a check valve 15 respectively; a fixed vertical pipe 11-1, a sampling horizontal pipe 11-2, a sampling valve 5 and a sampling tube 3 are provided in the sampling process 11, and both ends of the sampling horizontal pipe 11-2 are connected to a four-way joint and a fixed vertical pipe 11-1 respectively; the sampling process 11 is connected to the waste liquid recovery tank 1 through the sampling tube 3 and is connected to the sampling pipeline 12 through the fixed vertical pipe 11-1.

[0038] The utility model discharges the fluid in the sampling pipeline 12 into the waste liquid recovery box 1 according to regulations through the sampling process 11 and the sampling tube 3 connected with the sampling pipeline 12, and when the discharged liquid volume reaches the specified standard, the oil sample or water sample is taken.

[0039] After sampling is completed, close the sampling valve 5 in the sampling process 11, open the back-suction pump control valve 8 of the back-suction pump 10, and transport the liquid in the waste liquid recovery tank 1 to the sampling pipeline 12 through the back-suction pump 10, the fixed vertical pipe 11-1 and the process horizontal pipe 11-2.

[0040] The utility model can transport a large amount of waste liquid generated during sampling in the waste liquid recovery box 1 to the sampling pipeline 12 through the back-suction pump 10, completing the circulation of the waste liquid during the sampling process, solving the defects of the prior art, and achieving the following effects:

[0041] It avoids the time-consuming and labor-intensive manual dumping of waste liquid after sampling, significantly reduces the workload of employees and reduces their labor intensity.

[0042] The environmental pollution caused by using open containers to hold waste liquid is avoided.

[0043] The problem of inaccurate liquid sample test data caused by small amount of liquid discharged during sampling is avoided.

[0044] It improves the sampling efficiency, ensures the quality of the liquid samples, ensures the accuracy of the test data, and improves the management level of oil and water wells.

[0045] Based on the above embodiment 1, the utility model also has the following embodiments:

[0046] A preferred embodiment: the sampling process 11 is also provided with a three-way pipe and a liquid sample discharge pipe 11-4, the fixed vertical pipe 11-1 is connected to the process horizontal pipe 11-2, the four-way joint and the liquid sample discharge pipe 11-4 in sequence through the three-way pipe; the liquid sample discharge pipe 11-4 is connected to the upper end interface of the four-way joint.

[0047] A preferred embodiment: a sampling main valve 11-3 is also provided in the process cross pipe 11-2 between the three-way pipe and the four-way joint; the sampling valve 5 is arranged in the liquid sample discharge pipe 11-4, and the sampling tube 3 is connected to the sampling valve 5 through a quick connector 4, so that the sampling tube 3 can be quickly disassembled and assembled.

[0048] A preferred embodiment: the left interface of the four-way joint is connected to the sampling transverse tube 11-2, the right interface is connected to the pressure gauge stop valve 7 through the elbow and the pressure gauge stop valve 7 and connected to the pressure gauge 6 through the pressure gauge stop valve 7; the upper end interface of the four-way joint is connected to the liquid sample discharge pipe 11-4 and the lower end interface is connected to the back-drawing pump control valve 8 and is connected to the back-drawing pump 10 and the check valve 15 in sequence. The utility model connects the pressure gauge 6 through the four-way joint and the pressure gauge stop valve 7, connects the back-drawing pump control valve 8 to the lower end interface of the four-way joint, and then connects to the back-drawing pump 10 through the back-drawing pump control valve 8, and also sets a check valve 15 between the back-drawing pump 10 and the waste liquid recovery box 1. The utility model optimizes the structure of the sampling process 11 and reduces the installation volume. The pressure gauge 6 is set to facilitate the observation of the pressure when the waste liquid is recovered. The utility model can conveniently complete the recovery and return of the waste liquid.

[0049] A preferred embodiment: the sampling main valve 11-3 is connected to the process cross pipe 11-2 at the rear side of the three-way pipe through a movable joint 11-5; in the venting cycle recovery device, all components except the re-drawing pump 10 and the liquid flow port 2 are made of stainless steel. A movable joint 11-5 is installed between the device and the three-way pipe, so that the device except the fixed standpipe 11-1 and the three-way pipe can be removed from the sampling pipeline 12. Only the fixed standpipe 11-1 and the three-way pipe are fixed in the sampling pipeline 12 of the sampling point, which can reduce the manufacturing cost of the device and make one machine multi-purpose.

[0050] A preferred embodiment: the re-sucking pump 10 is a hand-cranked civil air defense pump. The purpose of setting the hand-cranked civil air defense pump is to avoid the lack of power supply at the sampling site, and the waste liquid can be recovered by manually operating the pressing rod 9.

[0051] A preferred embodiment: the sampling tube 3 is a metal hose, which is easy to install and store. At the same time, the sampling tube 3 can be a longer metal hose, and it is also convenient to connect with the waste liquid recovery box 1 through the quick connector 4.

[0052] A preferred embodiment: a liquid level gauge 14 is provided in the waste liquid recovery box 1, and a support leg is provided at the lower end of the waste liquid recovery box 1, and a universal wheel 13 is installed at the lower end of the support leg. The liquid level in the waste liquid recovery box 1 can be conveniently observed through the liquid level gauge 14; after the universal wheel 13 is installed, the movement of the device is convenient and fast.

[0053] A preferred embodiment: The top of the waste liquid recovery box 1 is provided with a liquid flow port 2 connected by a flange. The liquid flow port 2 is made of non-metallic material and is provided with a fixed pillar 2-1 and a sealing cover 2-2. One end of the sealing cover 2-2 is movably connected to the rotating shaft fixed on the flange, and the other end is movably connected to the fixed pillar 2-1 fixed on the flange through a connecting hook; the sealing member embedding groove on the back of the sealing cover 2-2 is equipped with a sealing member 2-3. The liquid flow port 2 is made of non-metallic material to prevent sparks from collision. The sealing member installation groove on the back of the liquid flow port 2 is embedded with a sealing member 2-3, which is tightly sealed to reduce air pollution. One end of the sealing cover 2-2 is fixed on the pillar, and the other end is provided with a groove that meshes with the fixed pillar 2-1, which can be slid open and closed. It can ensure that the waste liquid recovery box 1 is closed to prevent environmental pollution during transportation to the treatment site.

[0054] A preferred embodiment: the check valve 15 is provided with a check valve connecting flange 15-1, a one-way flow cover 15-2 and a flow cover fixing wing 15-3, the one-way flow cover 15-2 and the bottom ring provided with the flow cover fixing wing 15-3 are manufactured in one piece, and the one-way flow cover 15-2 and the bottom ring are made of rubber material; the bottom ring in the one-way flow cover 15-2 is embedded in the sealing cover embedding groove on the outer periphery of the center hole of the check valve connecting flange 15-1; the flow cover fixing wing 15-3 is fixed in the fixing groove of the check valve connecting flange 15-1; the check valve 15 is connected to the flange of the return pipeline connected to the waste liquid recovery tank 1 below through the check valve connecting flange 15-1.

[0055] See also Figure 1-Figure 4 The liquid flow port 2 in the waste liquid recovery box 1 has sealing performance. The device can be fixed on the sampling pipeline or disassembled from the movable joint 11-5, and moved to other sampling points for use, which can reduce the manufacturing cost of the device and achieve multiple functions with one machine.

[0056] A liquid level meter 14 is provided in the waste liquid recovery box 1 so as to conveniently observe the liquid level in the box.

[0057] Universal wheels 13 are provided at the lower ends of the legs of the waste liquid recovery box 1, which can conveniently realize the function of quickly moving to different sampling positions as the sampling points are changed.

[0058] The back-up pump 10 in the utility model is a hand-cranked civil air defense pump. By pressing the pressing rod 9, the piston in the pump cylinder can be driven to move up and down, thereby changing the volume in the pump cylinder, so that the liquid in the waste liquid recovery box 1 is sucked in and discharged under the action of the vacuum pressure in the pump cylinder.

[0059] When sampling, open the sampling main valve 11-3 and the sampling valve 5 in turn, open the sealing cover 2-2 at the upper end of the liquid flow port 2, and allow the sampling liquid to enter the waste liquid recovery box 1. After the sampling liquid flows freely at a flow rate of 5-6L / min for 3 minutes, take out the appropriate sample amount, and then close the sampling valve 5, the sampling main valve 11-3 and the liquid flow port 2 in turn to complete the sampling task.

[0060] When recovering the waste liquid in the waste liquid recovery tank 1, open the back-suction pump control valve 8 and the sampling main valve 11-3 in sequence, close the sampling valve 5, and press the pressing rod 9 of the back-suction pump 10 up and down to quickly recover the waste liquid into the sampling pipeline 12.

[0061] The embodiments described above are only typical embodiments, but the utility model is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and enlightenment of the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the creative spirit and creative concept of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope is not limited to the above description.

Claims

1. A sampling and venting liquid circulation and recovery device, comprising a waste liquid recovery tank, characterized in that: A sampling process and a back-drawing pump are provided, and the back-drawing pump is connected to a four-way joint and a waste liquid recovery tank through a back-drawing pump control valve and a check valve respectively; a fixed vertical pipe, a sampling horizontal pipe, a sampling valve and a sampling tube are provided in the sampling process, and both ends of the sampling horizontal pipe are connected to the four-way joint and the fixed vertical pipe respectively; the sampling process (11) is connected to the waste liquid recovery tank through the sampling tube and is connected to the sampling pipeline through the fixed vertical pipe.

2. A sampling and venting liquid recycling device as claimed in claim 1, characterized in that: The sampling process is also provided with a three-way pipe and a liquid sample discharge pipe. The fixed vertical pipe is connected to the process horizontal pipe, the four-way joint and the liquid sample discharge pipe in sequence through the three-way pipe; the liquid sample discharge pipe is connected to the upper end interface of the four-way joint.

3. A sampling and venting liquid recycling device as claimed in claim 2, characterized in that: A sampling main valve is also provided in the process transverse pipe between the three-way pipe and the four-way joint; the sampling valve is arranged in the liquid sample discharge pipe, and the sampling pipe is connected to the sampling valve through a quick joint.

4. A sampling and venting liquid recycling device as claimed in claim 2 or 3, characterized in that: The left interface of the four-way joint is connected to the sampling cross tube, and the right interface is connected to the pressure gauge stop valve through an elbow and is connected to the pressure gauge through the pressure gauge stop valve; the upper end interface of the four-way joint is connected to the liquid sample discharge pipe and the lower end interface is connected to the backdraft pump control valve and is connected to the backdraft pump and the check valve in turn.

5. A sampling and venting liquid recycling device as claimed in claim 3, characterized in that: The sampling main valve is connected to the process cross pipe at the rear side of the three-way pipe through a movable joint; in the venting circulation recovery device, all components except the back-drawing pump and the liquid flow port are made of stainless steel.

6. A sampling and venting liquid recycling device as claimed in claim 1, characterized in that: The back-drawing pump is a hand-cranked civil air defense pump.

7. A sampling and venting liquid recycling device as claimed in claim 1, characterized in that: The sampling tube is a metal hose.

8. A sampling and venting liquid recycling device as claimed in claim 4, characterized in that: A liquid level meter is arranged in the box body of the waste liquid recovery box, and a supporting leg is arranged at the lower end of the box body of the waste liquid recovery box, and a universal wheel is arranged at the lower end of the supporting leg.

9. A sampling and venting liquid recycling device as claimed in claim 8, characterized in that: The top of the waste liquid recovery box is provided with a liquid flow port connected by a flange. The liquid flow port is made of non-metallic material and is provided with a fixed support and a sealing cover. One end of the sealing cover is movably connected to a rotating shaft fixed on the flange, and the other end is movably connected to a fixed support fixed on the flange through a connecting hook; a sealing member is installed in the sealing member embedding groove on the back of the sealing cover.

10. A sampling and venting liquid recycling device as claimed in claim 1, characterized in that: The check valve is provided with a check valve connecting flange, a one-way flow cover and a flow cover fixing wing. The one-way flow cover and the bottom ring provided with the flow cover fixing wing are manufactured in one piece, and the one-way flow cover and the bottom ring are made of rubber material; the bottom ring in the one-way flow cover is embedded in the sealing cover embedding groove on the outer periphery of the center hole of the check valve connecting flange; the flow cover fixing wing is fixed in the fixing groove of the check valve connecting flange; the check valve is connected to the flange of the return pipeline connected to the waste liquid recovery tank below through the check valve connecting flange.

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