Eight-well type integrated metering device for natural gas station

Abstract

The invention relates to the technical field of natural gas station processing equipment, and particularly discloses an eight-well type integrated metering device for a natural gas station, which comprises a gathering pipe, a connecting pipe is fixedly communicated with the gathering pipe, and a separation tank is fixedly communicated with one end, far away from the connecting pipe, of the gathering pipe. Gas-liquid separation of gas from eight wells is achieved through reciprocating motion of the motor, the filtering efficiency is greatly improved compared with a common gravity settling mode for separation, when the driving disc moves downwards, gas at the bottom of the separation tank can be squeezed, the density of the gas is increased, condensation of liquid in the gas is greatly improved, and the separation efficiency is improved. According to the device, the sponge pipe is arranged, so that the filtering effect is better when gas passes through the sponge pipe, the filtering quality is improved, along with the up-down reciprocating movement of the driving disc, the sponge pipe is extruded and liquid in the sponge pipe is extruded and guided out when the gas is compressed, the collection efficiency of the separated liquid is greatly improved, and the working efficiency is improved. And meanwhile, the sponge pipe can be automatically cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas station processing equipment, in particular to an eight-well integrated metering device for a natural gas station. Background Art

[0002] The natural gas metering and gathering device is a device that separates and meters the gas from the wellhead, and then transmits the gas to the outside and discharges the sewage into the sewage tank. After the gas from the wellhead is measured, it enters the separator and is separated into gas and liquid phases under the action of gravity and the mist collector. After the gas leaves the separator, it is transmitted to the outside, and the liquid gathers in the liquid collecting bag at the lower part of the cylinder and is automatically discharged through the steam trap. According to the original station design, the gas from the wellhead needs to be separated first and then measured. The gas uses an integrated advanced orifice metering device, and the liquid uses a worm flowmeter. In addition, each well must be equipped with a set of equipment, resulting in a series of problems such as high construction cost, high maintenance cost, and low management efficiency.

[0003] And there are still many shortcomings in traditional metering devices. In terms of gas-liquid separation efficiency, the commonly used gravity sedimentation method relies on natural gravity to separate gas and liquid, which is slow and difficult to meet the high-efficiency requirements of large-scale production. Moreover, the separation effect is poor, and a lot of liquid often remains in the gas, which not only affects the subsequent transportation and use of the gas, but also may cause corrosion and damage to related equipment. In terms of filtration quality, it is difficult for existing devices to efficiently filter tiny droplets in the gas, resulting in excessive liquid content in the separated gas, affecting the quality of natural gas. In terms of liquid collection and equipment cleaning, there is a lack of effective mechanisms, and the filter elements cannot be automatically cleaned and liquids collected, which not only increases the cost of manual maintenance, but also easily reduces the stability of equipment operation due to clogging of the filter elements. In addition, the existing device has a low degree of automation and cannot automatically control the airflow path and equipment sealing during gas compression and separation. It is not only complicated to operate, but also prone to safety hazards, and it is difficult to meet the growing intelligent and efficient production needs of natural gas stations. Summary of the invention

[0004] 1. Technical issues to be resolved The present invention provides an eight-well integrated metering device for a natural gas station, which solves the problems mentioned in the above background technology.

[0005] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: an eight-well integrated metering device for a natural gas station, comprising a gathering pipe, a connecting pipe is fixedly connected to the gathering pipe, eight connecting pipes are arranged along the gathering pipe at fixed intervals, a two-phase flow meter is arranged on the connecting pipe, one end of the gathering pipe away from the connecting pipe is fixedly connected to a separation tank, the top of the separation tank is fixedly connected to an outlet pipe, and a liquid outlet is opened on the inner surface of the bottom of the separation tank, and further comprising: A separation mechanism, wherein the separation mechanism is fixedly installed inside the separation tank, wherein the separation mechanism moves up and down along the central axis of the separation tank; An opening and closing mechanism, wherein the opening and closing mechanism penetrates and is fixedly connected to the inner surface of the bottom of the separation tank, and the gathering pipe is connected to the separation tank through the opening and closing mechanism; The separation mechanism includes a fixed ring, which is fixedly connected to the middle inner surface of the separation tank, and a sliding rod is fixedly connected to the upper surface of the fixed ring. Six sliding rods are arranged at fixed intervals around the central axis of the fixed ring, and the top of the sliding rod is fixedly connected to a top ring, and the top ring is fixedly connected to the top inner surface of the separation tank. A sliding ring No. 1 is elastically slidably sleeved on the sliding rod, and an extrusion bag is fixedly connected to the upper surface of the sliding ring No. 1, and the extrusion bag is arranged in a ring shape. A sliding ring No. 2 is fixedly connected to the top of the extrusion bag, and the sliding ring No. 2 is slidably sleeved on the sliding rod, and the inner surface of the sliding ring No. 2 is fixedly connected to a driving disk, wherein the sliding ring No. 1 and the sliding ring No. 2 do not contact the inner wall of the separation tank.

[0006] Preferably, the bottom surface of the driving disk is fixedly connected to an outer tube, the bottom of the outer tube is slidably connected to the inner surface of the fixing ring, the top outer surface of the outer tube is penetrated by a No. 1 slot, the inner surface of the outer tube is slidably connected to an inner tube, the top outer surface of the inner tube is penetrated by a No. 2 slot, wherein the No. 1 slot and the No. 2 slot are initially staggered.

[0007] Preferably, the bottom outer surface of the inner tube is fixedly connected with a bottom ring, and the bottom ring is fixedly connected to the bottom inner surface of the separation tank. The bottom inner surface of the inner tube is fixedly connected with a positioning plate via a connecting rod. The upper surface of the positioning plate is penetrated by a driving rod for rotation connection, and the top of the driving rod is penetrated by a driving rod for rotation connection to the top outer surface of the separation tank, wherein the top of the driving rod is rotationally connected with a motor, and the motor is fixedly connected to the top outer surface of the separation tank, and the outer surface of the driving rod is provided with a thread, wherein the driving rod and the driving plate are connected by a thread.

[0008] Preferably, the top of the inner tube is fixedly connected with a bellows, the top of the bellows is fixedly connected to the bottom surface of the driving disk, the top inner surface of the inner tube is fixedly connected with a mounting ring, the mounting ring is arranged below the No. 2 slot, the upper surface of the mounting ring is fixedly connected with a sponge tube, the sponge tube is arranged in a corrugated shape, and a hydrophobic membrane is arranged inside the sponge tube.

[0009] Preferably, the opening and closing mechanism includes a mounting tube, the mounting tube passes through and is fixedly connected to the inner surface of the bottom of the separation tank, a load-bearing ring is fixedly connected to the inner surface of the mounting tube, the interior of the load-bearing ring is arranged to be hollow, a guide rod is fixedly connected to the interior of the load-bearing ring, six guide rods are arranged at fixed intervals around the central axis of the load-bearing ring, the outer end of the guide rod protrudes out of the load-bearing ring, the outer end of the guide rod is fixedly connected to a mating disk, the mating disk is fixedly connected to the inner surface of the mounting tube, and a through hole is opened in the middle of the mating disk.

[0010] Preferably, a moving tube is slidably connected to the guide rod, and the moving tube is slidably set on the inner surface of the carrying ring. The internal cavity of the extrusion bag is connected with the internal cavity of the carrying ring. The outer end of the moving tube is fixedly connected to a moving disk, and the middle outer surface of the moving disk is fixedly connected to a filling block. The filling block is arranged in a cylindrical shape, wherein the filling block is opposite to the through hole on the matching disk, and a connecting hole is opened through the outer surface of the moving disk.

[0011] Preferably, a working hole is penetrated inside the movable tube, wherein the working hole is arranged through the movable disk, and six working holes are arranged at fixed intervals around the central axis of the movable tube. A blocking tube is elastically and slidably connected inside the working hole, and the diameter of one end of the blocking tube close to the movable disk is smaller than the diameter of the other end away from the movable disk. A through hole is penetrated on the side surface of one end of the blocking tube close to the movable disk, and one end of the blocking tube close to the matching disk is set to a closed state.

[0012] Preferably, an extrusion tube is fixedly connected to the side surface of the matching disk close to the movable disk, and six extrusion tubes are arranged at fixed intervals around the central axis of the matching disk. The extrusion tube is opposite to the working hole, and a through hole is opened through the side surface of the extrusion tube. A gas gathering groove is opened inside the matching disk, and the gas gathering groove is connected to the internal cavity of the extrusion tube.

[0013] Preferably, the interior of the matching disk is provided with an installation groove, the installation groove is communicated with the gas gathering groove, and the installation groove is also communicated with the middle through hole of the matching disk, the interior of the installation groove is fixedly connected with an expansion membrane, the outer surface of the expansion membrane is fixedly connected with a No. 1 plug-in rod, and the two ends of the No. 1 plug-in rod are slidably plugged with a No. 2 plug-in rod, wherein the No. 1 plug-in rod and the No. 2 plug-in rod are each provided with three, and the No. 1 plug-in rod and the No. 2 plug-in rod are combined into a circular ring shape, and the side surface of the filling block is fixedly inlaid with a sealing ring, and the sealing ring is made of rubber material, and the interior of the sealing ring is set to be hollow, and eight connecting pipes are respectively connected to eight wells, and the incoming gases from the eight wells are respectively measured by a two-phase flow meter and then merged into the gathering pipe and finally enter the separation tank for separation, and the separated gas is transported through the gas outlet pipe, and the separated liquid is discharged through the liquid outlet at the bottom of the separation tank, and when the gas enters the separation tank, the motor is started to reciprocate, that is, through the motor The driving rod is driven to rotate. As the driving rod rotates, the driving disk begins to move downward in the separation tank through the action of the thread, so that the No. 2 sliding ring begins to move downward along the sliding rod. At this time, due to the elastic supporting force provided by the No. 1 sliding ring, the No. 2 sliding ring begins to squeeze the extrusion bag. When the extrusion bag can no longer be squeezed, it will move downward synchronously with the No. 1 sliding ring. At the same time, as the driving disk moves downward, the outer tube will also be driven to slide downward, so that the outer tube and the inner tube begin to overlap. The gas at the bottom of the separation tank is gradually squeezed through the sealing of the bellows. As the outer tube moves downward, the No. 1 slot on the outer tube eventually overlaps with the No. 2 slot on the inner tube, so that the bottom of the separation tank is connected with the top cavity. At this time, the gas at the bottom of the separation tank is filtered through the sponge tube under pressure, passes through the No. 1 slot and the No. 2 slot, enters the top of the separation tank, and is transported through the air outlet pipe, while the liquid filtered by the sponge tube flows into the liquid outlet at the bottom of the separation tank for discharge.

[0014] (III) Beneficial effects The present invention provides an eight-well integrated metering device for natural gas stations. It has the following beneficial effects: (I) The eight-well integrated metering device used in the natural gas station realizes gas-liquid separation of the gas from the eight wells through the reciprocating motion of the motor. Compared with the commonly used separation by gravity sedimentation, the filtration efficiency is greatly improved. At the same time, when the driving disc moves downward, the gas at the bottom of the separation tank will be squeezed, so that the density of the gas is increased, thereby greatly improving the condensation of the liquid in the gas, so that the gas is better filtered when passing through the sponge tube, and the filtration quality is greatly improved. As the driving disc moves up and down, even when the gas is properly compressed, the sponge tube is squeezed at the same time, that is, the liquid in the sponge tube is squeezed and discharged, which not only greatly improves the collection efficiency of the liquid after separation, but also can self-clean the sponge tube to avoid the sponge tube absorbing too much liquid and affecting the filtration efficiency, greatly improving the stability of the use of the device.

[0015] (II) The eight-well integrated metering device used in the natural gas station will transmit the internal air pressure to the cavity of the bearing ring when the extrusion bag is squeezed, that is, the cavity pressure in the bearing ring increases, that is, the moving tube begins to be squeezed, prompting the moving tube to drive the moving disk close to the matching disk, and finally the filling block on the moving disk is plugged into the through hole on the matching disk to close the connecting hole, that is, the cavity at the bottom of the separation tank is sealed, and then the incoming gas path is automatically closed when the gas at the bottom of the separation tank is squeezed, which greatly improves the automation degree of the device and is easy to use. At the same time, when the driving disk just starts to move up, the No. 1 sliding ring is under the strong elastic force. The extrusion bag cannot be reset in time. At this time, the No. 1 slot and the No. 2 slot are misaligned, and the bottom of the separation tank is always in a closed state, that is, the bottom of the separation tank is in a negative pressure state. When the driving disk moves to the top, the extrusion bag is stretched, so that the moving tube drives the moving disk to reset and reopens the connecting hole. At this time, under the action of negative pressure, the incoming gas from the eight wells quickly enters the bottom of the separation tank for filling. Under the action of negative pressure, the incoming gas enters the bottom of the separation tank and stirs the original remaining gas at the bottom of the separation tank, so that the incoming gas is mixed with the original gas at the bottom of the separation tank, thereby avoiding dead angles at the bottom of the separation tank that are not conducive to gas extrusion and transportation, and avoiding safety hazards.

[0016] (III) In the eight-well integrated metering device used in the natural gas station, the air pressure in the extrusion bag will also fill into the working hole on the moving tube when it enters the bearing ring. Initially, the working hole is sealed by the blocking tube under the action of elastic force. As the moving tube and the moving disk continue to move, the extrusion tube finally enters the working hole and squeezes the blocking tube, causing the blocking tube to slide inward in the working hole, and finally the extrusion tube and the blocking tube move to the side of the wide diameter in the working hole. At this time, the internal cavity of the bearing ring is connected through the extrusion tube and the through hole on the blocking tube, that is, the air pressure is transported to the gas gathering groove through the extrusion tube, and finally enters the installation groove, causing the expansion membrane in the installation groove to begin to expand, and then begins to push the No. 1 plug-in rod and the No. 2 plug-in rod. The rods begin to close, and at this time the filling block just moves to the through hole of the matching disk, that is, the closing of the No. 1 plug-in rod and the No. 2 plug-in rod causes the No. 1 plug-in rod and the No. 2 plug-in rod to begin to squeeze the sealing ring on the filling block, and the sealing ring is hollow. Under the extrusion, the two sides of the sealing ring begin to expand outward, thereby greatly increasing the contact area between the sealing ring and the No. 1 plug-in rod and the No. 2 plug-in rod, thereby greatly improving the sealing effect of the device when working, and at the same time, the sealing ring only passively produces an extrusion effect. Compared with the existing device that simply uses a sealing collar for sealing, it is easy to cause friction and wear of the sealing collar, thereby greatly increasing the service life of the sealing ring, reducing the number of maintenance times of the device, that is, greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the separation tank of the present invention; Figure 3 It is a partial structural schematic diagram of the separation mechanism of the present invention; Figure 4 It is a further structural schematic diagram of the separation mechanism of the present invention; Figure 5 It is a partial structural schematic diagram of the opening and closing mechanism of the present invention; Figure 6 It is a further structural schematic diagram of the opening and closing mechanism of the present invention; Figure 7 It is a structural schematic diagram of the blocking tube of the present invention; Figure 8 It is a schematic diagram of the internal structure of the matching disk of the present invention.

[0018] In the figure: 1, gathering tube; 2, connecting tube; 3, separation tank; 4, air outlet pipe; 5, liquid outlet; 6, separation mechanism; 61, fixing ring; 62, sliding rod; 63, top ring; 64, No. 1 sliding ring; 65, squeezing bag; 66, No. 2 sliding ring; 67, driving plate; 68, outer tube; 69, No. 1 slot; 610, inner tube; 611, No. 2 slot; 612, bottom ring; 613, positioning plate; 614, driving rod; 615, motor; 616, wave Corrugated tube; 617, mounting ring; 618, sponge tube; 7, opening and closing mechanism; 71, mounting tube; 72, load-bearing ring; 73, guide rod; 74, matching disk; 75, moving tube; 76, moving disk; 77, filling block; 78, connecting hole; 79, working hole; 710, blocking tube; 711, extrusion tube; 712, gas gathering groove; 713, mounting groove; 714, expansion membrane; 715, plug-in rod No. 1; 716, plug-in rod No. 2; 717, sealing ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] First embodiment: Figures 1 to 8As shown, the present invention provides a technical solution: an eight-well integrated metering device for a natural gas station, comprising a gathering pipe 1, a connecting pipe 2 is fixedly connected to the gathering pipe 1, eight connecting pipes 2 are arranged at fixed intervals along the gathering pipe 1, wherein a two-phase flow meter is arranged on the connecting pipe 2, and a separation tank 3 is fixedly connected to one end of the gathering pipe 1 away from the connecting pipe 2, an air outlet pipe 4 is fixedly connected to the top of the separation tank 3, and a liquid outlet 5 is opened on the inner surface of the bottom of the separation tank 3, and further comprising: The separation mechanism 6 is fixedly installed inside the separation tank 3, wherein the separation mechanism 6 moves up and down along the central axis of the separation tank 3; An opening and closing mechanism 7, the opening and closing mechanism 7 penetrates and is fixedly connected to the inner surface of the bottom of the separation tank 3, and the gathering pipe 1 is connected to the separation tank 3 through the opening and closing mechanism 7; The separation mechanism 6 includes a fixed ring 61, which is fixedly connected to the middle inner surface of the separation tank 3, and a sliding rod 62 is fixedly connected to the upper surface of the fixed ring 61. Six sliding rods 62 are arranged at fixed intervals around the central axis of the fixed ring 61, and a top ring 63 is fixedly connected to the top of the sliding rod 62. The top ring 63 is fixedly connected to the top inner surface of the separation tank 3. A No. 1 sliding ring 64 is elastically slidably sleeved on the sliding rod 62, and an extrusion bag 65 is fixedly connected to the upper surface of the No. 1 sliding ring 64. The extrusion bag 65 is set in a ring shape, and a No. 2 sliding ring 66 is fixedly connected to the top of the extrusion bag 65. The No. 2 sliding ring 66 is slidably sleeved on the sliding rod 62, and a driving disk 67 is fixedly connected to the inner surface of the No. 2 sliding ring 66, wherein the No. 1 sliding ring 64 and the No. 2 sliding ring 66 do not contact the inner wall of the separation tank 3.

[0021] The bottom surface of the driving disk 67 is fixedly connected to an outer tube 68, the bottom of the outer tube 68 is slidably connected to the inner surface of the fixing ring 61, a No. 1 slot 69 is penetrated through the top outer surface of the outer tube 68, an inner tube 610 is slidably connected to the inner surface of the outer tube 68, a No. 2 slot 611 is penetrated through the top outer surface of the inner tube 610, and the No. 1 slot 69 and the No. 2 slot 611 are initially offset.

[0022] The bottom outer surface of the inner tube 610 is fixedly connected with a bottom ring 612, and the bottom ring 612 is fixedly connected to the bottom inner surface of the separation tank 3. The bottom inner surface of the inner tube 610 is fixedly connected with a positioning plate 613 through a connecting rod. The upper surface of the positioning plate 613 is penetrated by a driving rod 614 for rotation connection, and the top of the driving rod 614 is penetrated by a driving rod 614 for rotation connection to the top outer surface of the separation tank 3, wherein the top of the driving rod 614 is rotatably connected with a motor 615, and the motor 615 is fixedly connected to the top outer surface of the separation tank 3, and the outer surface of the driving rod 614 is provided with a thread, wherein the driving rod 614 and the driving plate 67 are connected by a thread.

[0023] The top of the inner tube 610 is fixedly connected to a bellows 616, and the top of the bellows 616 is fixedly connected to the bottom surface of the driving disk 67. The top inner surface of the inner tube 610 is fixedly connected to a mounting ring 617, and the mounting ring 617 is arranged below the No. 2 slot 611. The upper surface of the mounting ring 617 is fixedly connected to a sponge tube 618, and the sponge tube 618 is arranged to be corrugated, wherein a hydrophobic membrane is arranged inside the sponge tube 618.

[0024] Second embodiment: Figures 1 to 8 As shown, the opening and closing mechanism 7 includes a mounting tube 71, which passes through and is fixedly connected to the inner surface of the bottom of the separation tank 3. A load-bearing ring 72 is fixedly connected to the inner surface of the mounting tube 71. The interior of the load-bearing ring 72 is set to be hollow. A guide rod 73 is fixedly connected to the interior of the load-bearing ring 72. Six guide rods 73 are set at fixed intervals around the central axis of the load-bearing ring 72. The outer end of the guide rod 73 protrudes out of the load-bearing ring 72. The outer end of the guide rod 73 is fixedly connected to a matching disk 74. The matching disk 74 is fixedly connected to the inner surface of the mounting tube 71, and a through hole is opened in the middle of the matching disk 74.

[0025] A moving tube 75 is slidably connected to the guide rod 73, and the moving tube 75 is slidably set on the inner surface of the carrying ring 72. The internal cavity of the extrusion bag 65 is connected to the internal cavity of the carrying ring 72. The outer end of the moving tube 75 is fixedly connected to a moving disk 76, and the middle outer surface of the moving disk 76 is fixedly connected to a filling block 77. The filling block 77 is set to a cylindrical shape, wherein the filling block 77 is opposite to the through hole on the matching disk 74, and a connecting hole 78 is opened through the outer surface of the moving disk 76.

[0026] A working hole 79 is provided inside the movable tube 75, wherein the working hole 79 is provided through the movable disk 76, and six working holes 79 are provided around the central axis of the movable tube 75 at fixed intervals. A blocking tube 710 is elastically and slidably connected inside the working hole 79, and the diameter of one end of the blocking tube 710 close to the movable disk 76 is smaller than the diameter of the other end away from the movable disk 76. A through hole is provided on the side surface of one end of the blocking tube 710 close to the movable disk 76, and one end of the blocking tube 710 close to the matching disk 74 is set to be in a closed state.

[0027] An extrusion tube 711 is fixedly connected to the side surface of the matching disk 74 close to the movable disk 76. Six extrusion tubes 711 are arranged at fixed intervals around the central axis of the matching disk 74. The extrusion tube 711 is opposite to the working hole 79. A through hole is opened on the side surface of the extrusion tube 711. A gas gathering groove 712 is opened inside the matching disk 74, and the gas gathering groove 712 is connected to the internal cavity of the extrusion tube 711.

[0028] An installation groove 713 is provided inside the matching disk 74, and the installation groove 713 is connected to the gas gathering groove 712. The installation groove 713 is also connected to the middle through hole of the matching disk 74. An expansion membrane 714 is fixedly connected inside the installation groove 713, and a No. 1 plug-in rod 715 is fixedly connected to the outer surface of the expansion membrane 714. A No. 2 plug-in rod 716 is slidably inserted at both ends of the No. 1 plug-in rod 715, wherein three No. 1 plug-in rods 715 and three No. 2 plug-in rods 716 are each provided, and the No. 1 plug-in rod 715 and the No. 2 plug-in rod 716 are combined into a circular ring shape, and a sealing ring 717 is fixedly inlaid on the side surface of the filling block 77. The sealing ring 717 is made of rubber material, and the interior of the sealing ring 717 is set to be hollow.

[0029] During operation, the eight connecting pipes 2 are connected to the eight wells respectively, and the gases from the eight wells are measured by the two-phase flowmeter respectively and then merged into the gathering pipe 1 and finally enter the separation tank 3 for separation. The separated gas is transported through the gas outlet pipe 4, and the separated liquid is discharged through the liquid outlet 5 at the bottom of the separation tank 3. When the gas enters the separation tank 3, the motor 615 is started to rotate reciprocatingly, that is, the driving rod 614 is driven to rotate by the motor 615. As the driving rod 614 rotates, the driving disk 67 starts to move down in the separation tank 3 through the action of the thread, so that the No. 2 sliding ring 66 starts to move down along the sliding rod 62. At this time, due to the elastic supporting force provided by the No. 1 sliding ring 64, the No. 2 sliding ring 66 starts to squeeze the extrusion bag 65. When the extrusion bag When the outer tube 65 can no longer be squeezed, it will move downward synchronously with the No. 1 sliding ring 64. At the same time, as the driving disk 67 moves downward, the outer tube 68 will also slide downward, that is, the outer tube 68 begins to overlap with the inner tube 610. The gas at the bottom of the separation tank 3 is gradually squeezed through the sealing of the bellows 616. As the outer tube 68 moves downward, the No. 1 notch 69 on the outer tube 68 and the No. 2 notch 611 on the inner tube 610 will eventually overlap, that is, the bottom of the separation tank 3 is connected with the top cavity. At this time, the gas at the bottom of the separation tank 3 is filtered through the sponge tube 618 under pressure, enters the top of the separation tank 3 through the No. 1 notch 69 and the No. 2 notch 611, and is transported through the outlet pipe 4, while the liquid filtered by the sponge tube 618 flows into the separation tank 3. The liquid outlet 5 at the bottom of the tank 3 is used for export, and the reciprocating motion of the motor 615 realizes the gas-liquid separation of the gas from the eight wells. Compared with the commonly used separation by gravity sedimentation, the filtration efficiency is greatly improved. At the same time, when the driving disk 67 moves downward, the gas at the bottom of the separation tank 3 is squeezed, so that the density of the gas is increased, thereby greatly improving the condensation of the liquid in the gas, so that the gas is better filtered when passing through the sponge tube 618, and the filtration quality is greatly improved. As the driving disk 67 reciprocates up and down, even when the gas begins to be compressed, the sponge tube 618 is squeezed and exported, that is, the liquid in the sponge tube 618 is squeezed and exported, which not only greatly improves the collection efficiency of the separated liquid, but also can The sponge tube 618 is self-cleaning to prevent the sponge tube 618 from absorbing too much liquid and affecting the filtering efficiency, which greatly improves the stability of the device. When the squeezing bag 65 is squeezed, the air pressure inside it will be transmitted to the cavity of the carrying ring 72, that is, the cavity pressure in the carrying ring 72 will increase, that is, the moving tube 75 will begin to be squeezed, so that the moving tube 75 drives the moving disk 76 to approach the matching disk 74, and finally the filling block 77 on the moving disk 76 is plugged into the through hole on the matching disk 74 to close the connecting hole 78, that is, the cavity at the bottom of the separation tank 3 is sealed, and then the incoming gas path is automatically closed when the gas at the bottom of the separation tank 3 is squeezed, which greatly improves the automation degree of the device and is easy to use.At the same time, when the driving disk 67 just starts to move up, since the No. 1 sliding ring 64 is under the action of strong elastic force, the squeezing bag 65 cannot be reset in time. At this time, the No. 1 notch 69 is misaligned with the No. 2 notch 611, and the bottom of the separation tank 3 is always in a closed state, that is, the bottom of the separation tank 3 is in a negative pressure state. When the driving disk 67 moves to the top, the squeezing bag 65 is stretched, so that the moving tube 75 drives the moving disk 76 to reset, and the connecting hole 78 is reopened. At this time, under the action of negative pressure, the incoming gas from the eight wells quickly enters the bottom of the separation tank 3 for filling. Under the action of negative pressure, the incoming gas enters the bottom of the separation tank 3, which presses the original bottom of the separation tank 3 The remaining gas is first stirred to mix the incoming gas with the original gas at the bottom of the separation tank 3, so as to avoid a dead angle at the bottom of the separation tank 3, which is not conducive to gas extrusion and transportation, and to avoid potential safety hazards. When the air pressure in the extrusion bag 65 enters the carrying ring 72, it will also fill the working hole 79 on the moving tube 75. Initially, the working hole 79 is sealed by the blocking tube 710 under the action of elastic force. As the moving tube 75 and the moving disk 76 continue to move, the extrusion tube 711 eventually enters the working hole 79 and squeezes the blocking tube 710, so that the blocking tube 710 slides inward in the working hole 79, and finally the extrusion tube 711 together with the blocking tube 710 is sealed. The plug tube 710 moves to the side of the wide diameter of the working hole 79. At this time, the internal cavity of the carrying ring 72 is connected through the extrusion tube 711 and the through hole on the plug tube 710, that is, the air pressure is transported to the gas gathering groove 712 through the extrusion tube 711, and finally enters the installation groove 713, so that the expansion membrane 714 in the installation groove 713 begins to expand, and then begins to push the No. 1 plug rod 715 and the No. 2 plug rod 716 to start to shrink. At this time, the filling block 77 just moves to the through hole of the matching disk 74, that is, the No. 1 plug rod 715 and the No. 2 plug rod 716 are shrunk together, so that the No. 1 plug rod 715 and the No. 2 plug rod 716 are opened. The sealing ring 717 begins to be squeezed with the sealing ring 717 on the filling block 77, and the sealing ring 717 is hollow. Under the squeezing effect, the two sides of the sealing ring 717 begin to expand outward, thereby greatly increasing the contact area between the sealing ring 717 and the No. 1 plug rod 715 and the No. 2 plug rod 716, thereby greatly improving the sealing effect of the device when working. At the same time, the sealing ring 717 only produces a passive squeezing effect. Compared with the existing device that simply uses a sealing collar for sealing, it is easy to cause friction and wear of the sealing collar, thereby greatly increasing the service life of the sealing ring 717, reducing the number of maintenance times of the device, that is, greatly improving the production efficiency.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eight-well integrated metering device for a natural gas station, comprising a gathering pipe (1), characterized in that: The gathering pipe (1) is fixedly connected to a connecting pipe (2), eight connecting pipes (2) are arranged at fixed intervals along the gathering pipe (1), wherein a two-phase flow meter is arranged on the connecting pipe (2), one end of the gathering pipe (1) away from the connecting pipe (2) is fixedly connected to a separation tank (3), the top of the separation tank (3) is penetrated and fixedly connected to an air outlet pipe (4), and the bottom inner surface of the separation tank (3) is penetrated and opened with a liquid outlet (5), and further comprises: A separation mechanism (6), wherein the separation mechanism (6) is fixedly mounted inside the separation tank (3), wherein the separation mechanism (6) moves up and down along the central axis of the separation tank (3); an opening and closing mechanism (7), the opening and closing mechanism (7) penetrating and fixedly connected to the inner surface of the bottom of the separation tank (3), and the gathering pipe (1) is connected to the separation tank (3) via the opening and closing mechanism (7); The separation mechanism (6) comprises a fixing ring (61), the fixing ring (61) being fixedly connected to the middle inner surface of the separation tank (3), the upper surface of the fixing ring (61) being fixedly connected to a sliding rod (62), six sliding rods (62) being arranged at fixed intervals around the central axis of the fixing ring (61), the top end of the sliding rod (62) being fixedly connected to a top ring (63), the top ring (63) being fixedly connected to the top inner surface of the separation tank (3), and the sliding rod (62) being elastically slidably sleeved with a A No. 1 sliding ring (64), the upper surface of which is fixedly connected to an extrusion bag (65), the extrusion bag (65) being arranged in a ring shape, the top of which is fixedly connected to a No. 2 sliding ring (66), the No. 2 sliding ring (66) being slidably sleeved on the sliding rod (62), the inner surface of which is fixedly connected to a driving disk (67), wherein the No. 1 sliding ring (64) and the No. 2 sliding ring (66) do not contact the inner wall of the separation tank (3).

2. The eight-well integrated metering device for a natural gas station according to claim 1 is characterized in that: The bottom surface of the driving disk (67) is fixedly connected to an outer tube (68), the bottom of the outer tube (68) is slidably connected to the inner surface of the fixing ring (61), a first notch (69) is penetrated through the top outer surface of the outer tube (68), an inner tube (610) is slidably connected to the inner surface of the outer tube (68), and a second notch (611) is penetrated through the top outer surface of the inner tube (610), wherein the first notch (69) and the second notch (611) are initially arranged in an offset manner.

3. The eight-well integrated metering device for a natural gas station according to claim 2 is characterized by: The bottom outer surface of the inner tube (610) is fixedly connected to a bottom ring (612), and the bottom ring (612) is fixedly connected to the bottom inner surface of the separation tank (3). The bottom inner surface of the inner tube (610) is fixedly connected to a positioning plate (613) via a connecting rod. A driving rod (614) is rotatably connected to the upper surface of the positioning plate (613). The top of the driving rod (614) is rotatably connected to the top outer surface of the separation tank (3). The top of the driving rod (614) is rotatably connected to a motor (615), and the motor (615) is fixedly connected to the top outer surface of the separation tank (3). The outer surface of the driving rod (614) is provided with a thread, and the driving rod (614) and the driving plate (67) are connected via a thread.

4. The eight-well integrated metering device for a natural gas station according to claim 3 is characterized by: The top of the inner tube (610) is fixedly connected to a bellows (616), the top of the bellows (616) is fixedly connected to the bottom surface of the driving disk (67), the inner surface of the top of the inner tube (610) is fixedly connected to a mounting ring (617), the mounting ring (617) is arranged below the No. 2 slot (611), the upper surface of the mounting ring (617) is fixedly connected to a sponge tube (618), the sponge tube (618) is arranged in a corrugated shape, and a hydrophobic membrane is arranged inside the sponge tube (618).

5. The eight-well integrated metering device for a natural gas station according to claim 4 is characterized in that: The opening and closing mechanism (7) comprises a mounting tube (71), the mounting tube (71) passing through and fixedly connected to the inner surface of the bottom of the separation tank (3), the inner surface of the mounting tube (71) being fixedly connected to a bearing ring (72), the interior of the bearing ring (72) being arranged to be hollow, the interior of the bearing ring (72) being fixedly connected to a guide rod (73), six guide rods (73) being arranged at fixed intervals around the central axis of the bearing ring (72), the outer ends of the guide rods (73) protruding from the bearing ring (72), the outer ends of the guide rods (73) being fixedly connected to a matching disk (74), the matching disk (74) being fixedly connected to the inner surface of the mounting tube (71), wherein a through hole is provided in the middle of the matching disk (74).

6. The eight-well integrated metering device for a natural gas station according to claim 5 is characterized by: A moving tube (75) is slidably connected to the guide rod (73), and the moving tube (75) is slidably arranged on the inner surface of the bearing ring (72). The inner cavity of the extrusion bag (65) is communicated with the inner cavity of the bearing ring (72). The outer end of the moving tube (75) is fixedly connected to a moving disk (76), and the middle outer surface of the moving disk (76) is fixedly connected to a filling block (77). The filling block (77) is arranged in a cylindrical shape, wherein the filling block (77) is directly opposite to the through hole on the matching disk (74), and a connecting hole (78) is opened through the outer surface of the moving disk (76).

7. The eight-well integrated metering device for a natural gas station according to claim 6 is characterized by: A working hole (79) is provided inside the movable tube (75), wherein the working hole (79) is provided through the movable disk (76), six working holes (79) are provided at fixed intervals around the central axis of the movable tube (75), a blocking tube (710) is elastically slidably connected inside the working hole (79), the diameter of one end of the blocking tube (710) close to the movable disk (76) is smaller than the diameter of the other end away from the movable disk (76), a through hole is provided through the side surface of one end of the blocking tube (710) close to the movable disk (76), and one end of the blocking tube (710) close to the matching disk (74) is set in a closed state.

8. The eight-well integrated metering device for a natural gas station according to claim 7 is characterized by: An extrusion tube (711) is fixedly connected to a surface of one side of the matching disk (74) close to the movable disk (76); six extrusion tubes (711) are arranged at fixed intervals around the central axis of the matching disk (74); the extrusion tubes (711) are directly opposite to the working hole (79); a through hole is provided through the side surface of the extrusion tube (711); a gas gathering groove (712) is provided inside the matching disk (74); and the gas gathering groove (712) is communicated with the internal cavity of the extrusion tube (711).

9. The eight-well integrated metering device for a natural gas station according to claim 8 is characterized by: The matching disk (74) is provided with a mounting groove (713) inside, the mounting groove (713) is communicated with the gas gathering groove (712), and the mounting groove (713) is also communicated with the middle through hole of the matching disk (74), the mounting groove (713) is fixedly connected with an expansion membrane (714) inside, the outer surface of the expansion membrane (714) is fixedly connected with a No. 1 plug-in rod (715), and the two ends of the No. 1 plug-in rod (715) are slidably plugged with a No. 2 plug-in rod (716), wherein the No. 1 plug-in rod (715) and the No. 2 plug-in rod (716) are each provided with three, and the No. 1 plug-in rod (715) and the No. 2 plug-in rod (716) are combined into a circular ring shape, and the side surface of the filling block (77) is fixedly inlaid with a sealing ring (717), the sealing ring (717) is made of rubber material, and the inside of the sealing ring (717) is set to be hollow.

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