CN111999128A - Natural gas line sampling valve - Google Patents
Natural gas line sampling valve Download PDFInfo
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- CN111999128A CN111999128A CN202010989403.9A CN202010989403A CN111999128A CN 111999128 A CN111999128 A CN 111999128A CN 202010989403 A CN202010989403 A CN 202010989403A CN 111999128 A CN111999128 A CN 111999128A
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- fixedly connected
- storage tank
- natural gas
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- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
- G01N2001/205—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping using a valve
Abstract
The invention belongs to the technical field of sampling valves, and particularly relates to a natural gas pipeline sampling valve which comprises a conveying pipe and a connecting pipe, wherein two ends of the connecting pipe are fixedly connected with a second fixing plate; the conveying pipes are arranged at two ends of the connecting pipe in number; one end of the conveying pipe close to the connecting pipe is fixedly connected with a first fixing plate; the first fixing plate and the corresponding second fixing plate are fixed through a hexagonal screw and a hexagonal screw cap, and a sealing ring is arranged between the first fixing plate and the corresponding second fixing plate; the surface of the connecting pipe is fixedly connected with a sampling pipe, the surface of the sampling pipe is fixedly connected with a valve, one end of the valve is movably connected with a knob, and the upper end of the sampling pipe is fixedly connected with a gas storage tank.
Description
Technical Field
The invention belongs to the technical field of sampling valves, and particularly relates to a natural gas pipeline sampling valve.
Background
The sampling valve is a valve used for obtaining a medium sample in a pipeline or equipment, a special sampling valve is mostly used in many occasions where the medium sample needs to be subjected to chemical analysis frequently, and the sampling valve is mainly divided into three types according to different working principles or performances during sampling, wherein the three types comprise a duplex opening valve, a flange clamping piece valve and a sampling valve with a heat-preservation clamping sleeve; traditional sample valve has some shortcomings, at first sample valve and pipeline are as an organic whole, be difficult to dismantle, secondly sample valve sample is more troublesome, lead to the natural gas to reveal easily, at last sample valve in the past can not the direct detection natural gas, must take out gaseous reuse instrument and detect, sample valve can remain the testing gas after detecting simultaneously, when detecting next time, remaining testing gas can seriously influence the testing result, cause and detect the precision and descend, and sample valve testing gas back, if testing gas has corrosivity, long-time use, testing gas remains and can lead to sample valve life low, in order to solve above-mentioned problem, we have provided this kind of natural gas pipeline sample valve.
Disclosure of Invention
In order to make up for the defects of the prior art, the problems that the traditional sampling valve is inconvenient to disassemble and cannot directly detect natural gas, the natural gas needs to be taken out and then detected, time and labor are wasted, the detection gas remained in the sampling valve influences the next detection accuracy, and meanwhile the service life of the sampling valve is short are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the natural gas pipeline sampling valve comprises a conveying pipe and a connecting pipe, wherein two ends of the connecting pipe are fixedly connected with a second fixing plate; the conveying pipes are arranged at two ends of the connecting pipe in number; one end of the conveying pipe close to the connecting pipe is fixedly connected with a first fixing plate; the first fixing plate and the corresponding second fixing plate are fixed through a hexagonal screw and a hexagonal screw cap, and a sealing ring is arranged between the first fixing plate and the corresponding second fixing plate; the surface of the connecting pipe is fixedly connected with a first sampling pipe, the surface of the first sampling pipe is fixedly connected with a first valve, one end of the first valve is movably connected with a first knob, the upper end of the first sampling pipe is fixedly connected with a gas storage tank, the upper end of the gas storage tank is fixedly connected with a gas exhaust pipe, the outer side of the gas exhaust pipe is fixedly connected with a second valve, one end of the second valve is movably connected with a second knob, the surface of the gas storage tank is fixedly connected with a second sampling pipe, the outer side of the second sampling pipe is fixedly connected with a third valve, and the upper end of the third valve is movably connected with a third knob; one end of the second sampling tube, which is far away from the gas storage tank, is fixedly connected with a detector, and the front end of the detector is fixedly connected with a control panel; when the gas storage tank works, a user penetrates through the first fixing plate, the sealing ring and the second fixing plate through the hexagon screws, then the hexagon screws and the hexagon screw caps are screwed tightly through the hexagon wrenches, natural gas enters the first sampling tube, the first valve is rotated to enable the natural gas to enter the gas storage tank, the first sampling tube is closed through the rotation of the first valve, the natural gas can be stored in the gas storage tank to prevent the natural gas from flowing back, meanwhile, the amount of the taken natural gas is more than that of the natural gas in the past, leakage of the natural gas is effectively prevented, when detection is needed, the third knob is rotated to open the third valve, the gas enters the detector through the second sampling tube, the detector can analyze the entering gas, the natural gas enters the detector to directly detect the natural gas, relevant data of the natural gas can be directly read through the control panel, and the detection is more time-efficient compared with the traditional method that the natural gas is taken out, the gas detection device has the advantages that troubles are omitted for detection personnel, time is saved, the gas is directly detected, the detection result is more accurate compared with the traditional detection result, the detection result is more time-efficient, when the detection is finished, the second knob is rotated to open the second valve, the gas is discharged from the exhaust pipe, and the corrosion of the gas to equipment is effectively prevented.
Preferably, the upper inner wall and the lower inner wall of the gas storage tank are both arc-shaped, and a pressure block is connected in the gas storage tank in a sliding manner; a first compression spring is fixedly connected between the upper surface of the pressure block and the upper inner wall of the gas storage tank; the upper surface and the lower surface of the pressure block are both designed in an arc shape, and the periphery of the pressure block is in sealed sliding connection with the side inner wall of the gas storage tank; a return pipe is fixedly connected between the detector and the gas storage tank; one end of the return pipe is communicated with a natural gas detection space in the detector, the other end of the return pipe is communicated with the interior of the gas storage tank, and the communication position is positioned above the side wall of the gas storage tank; the surface of the backflow pipe is fixedly connected with a valve II; one end of the fourth valve is movably connected with a fourth knob; when the natural gas detector works, after the first knob is opened, the air pressure below the pressure block rises along with the increase of the injection amount of the natural gas in the process that the natural gas enters the gas storage tank, the pressure block is pushed to move upwards to extrude the first compression spring, the communication part between the second sampling tube and the gas storage tank is opened after the pressure block moves upwards, after the first knob is opened for a period of time, the pressure block moves upwards to the highest position, the first knob is closed, the third knob is opened, the natural gas below the pressure block in the gas storage tank enters the detector through the second sampling tube, at the moment, the pressure block extrudes the natural gas due to the gravity action of the pressure block and the elastic force action of the first compression spring, so that the natural gas entering the detector is compressed, the density of the natural gas is improved, the detection accuracy of the detector is effectively improved, when the detection is finished, the fourth knob is opened, the natural gas in the detector flows into the, the switch through No. four knobs can improve the natural gas and in the inside persistence time of detector, it is long when accessible manual control detects, thereby further improve and detect the precision, and because the squeezing action of pressure piece makes the natural gas receive the extrusion, atmospheric pressure rises, open the back at No. four knobs, the natural gas is in the velocity of flow improvement in the return line, can improve the speed of natural gas outflow detector, thereby reduce natural gas content in the detector, reduce the detector corrosion degree, and the service life is prolonged, No. two knobs are opened before opening No. four knobs simultaneously, guarantee the quick discharge of platform natural gas, No. three knobs are closed to a period of time of stewing after the discharge, No. four knobs and No. two, wait for the detection of next natural gas.
Preferably, the inner wall of the bottom of the gas storage tank is fixedly connected with a first rubber layer; a first cavity is formed in the first rubber layer; the first cavity is communicated with the air outside the air storage tank through a first air groove, and the first cavity is communicated with the communication position of a second sampling tube and the air storage tank through a second air groove; one-way valves are arranged in the first air groove and the second air groove, so that the external air is ensured to enter the first cavity and then enter the second sampling tube through the second air groove; when the pressure block is contacted with the first rubber layer, the natural gas in the gas storage tank below the pressure block enters the second sampling pipe, and the gas in the first cavity is sprayed out through the second gas tank and is positioned at the tail part of the natural gas to push the natural gas to pass through the detector, so that the residual natural gas is discharged out of the detector, the content of the residual natural gas in the detector is reduced, and more natural gas is prevented from remaining in the detector, cause the detector internal corrosion, improve detector life, the natural gas discharge detector after will detecting simultaneously prevents that the natural gas remaining in the next natural gas detection process from influencing and detecting the precision.
Preferably, a second compression spring is fixedly connected in the first cavity and is uniformly distributed; when the device works, when the pressure block moves down to extrude the first rubber layer instantly, the first rubber layer vibrates after being extruded due to the resilience of the first compression spring and the second compression spring, so that the first cavity generates intermittent expansion and contraction, air is sucked into the outside through the first air groove in the expansion process of the first cavity, air flows into the second sampling pipe through the second air groove in the contraction process of the first cavity, the amount of the outside air entering the detector is further increased, the discharge amount of natural gas in the detector is increased, the content of the natural gas in the detector is further reduced after the detection of the detector is finished, the service life and the detection accuracy are improved, meanwhile, the pressure block moves upwards during the next detection, more outside air can be sucked into the first cavity through the second compression spring, and the discharge of residual natural gas in the detector after each detection is finished is ensured, the service life is prolonged.
Preferably, the lower surface of the pressure block is fixedly connected with a second rubber layer; a second cavity is formed in the second rubber layer; the lower surface of the second rubber layer is fixedly connected with rubber bulges which are uniformly distributed; the rubber bulge is made of hard rubber material; one end of the rubber bulge penetrates into the second cavity, and a third compression spring is fixedly connected between one end of the rubber bulge in the second cavity and the inner wall of the second cavity; when the pressure block contacts and presses the first rubber layer, the impact force of the pressure block on the gas storage tank is reduced by matching the second rubber layer with the first rubber layer, the service life of the gas storage tank is prolonged, meanwhile, when the rubber layer II extrudes the rubber layer I, the gas in the cavity II is extruded, the extrusion force on the rubber layer I can be improved through the rubber bulge, and meanwhile, the compression spring III is matched with the compression spring II and the compression spring III, after the pressure block strikes the rubber layer, the resilience of a compression spring, No. two compression springs and No. three compression springs makes a compression spring, No. two compression springs and No. three compression springs stretch out and draw back in a reciprocating manner, further improves the vibration amplitude on a rubber layer, makes a cavity inhale more air in the external world and get into the tester, further improves the inside natural gas exhaust efficiency of tester, improves life.
Preferably, the return pipe is designed to be inclined upwards towards the gas storage tank by the detector; during operation, through back flow slope design, after opening No. four knobs and No. two knobs, a period of time in-process stews because the natural gas is lighter for the air, the natural gas slowly floats in the air, can guarantee at the slope design of back flow that the natural gas discharges to in the gas storage tank completely in the detector, get into simultaneously and hold natural gas in the gas storage tank because No. two knobs open, the in-process natural gas that stews passes through the blast pipe and discharges to make the natural gas discharge completely in the gas storage tank, improve life, make things convenient for next time to detect.
The invention has the following beneficial effects:
1. according to the natural gas pipeline sampling valve, the pressure block extrudes natural gas under the action of gravity of the pressure block and the elastic force of the first compression spring, so that the natural gas entering the detector is compressed, the density of the natural gas is improved, and the detection accuracy of the detector is effectively improved.
2. The natural gas pipeline sampling valve is opened by the fourth knob, natural gas in a detector flows into a gas storage tank through a return pipe, at the moment, a pressure block moves downwards instantly under the action of gravity and the elastic force of a first compression spring to contact and press a first rubber layer, so that gas in a first cavity in the first rubber layer is sprayed out through a second gas groove, when the pressure block contacts the first rubber layer, the natural gas in the gas storage tank below the pressure block enters a second sampling pipe, at the moment, the gas in the first cavity is sprayed out through the second gas groove and is positioned at the tail part of the natural gas, the natural gas is pushed to pass through the detector, so that the residual natural gas is discharged out of the detector, the content of the residual natural gas in the detector is reduced, more natural gas is prevented from remaining in the detector, the internal corrosion of the detector is caused, the service life of the detector is prolonged, and the detected natural gas, the influence of residual natural gas on the detection accuracy in the next natural gas detection process is prevented.
3. According to the natural gas pipeline sampling valve, due to the inclined design of the return pipe, after the fourth knob and the second knob are opened, natural gas is lighter than air and slowly floats in the air during standing for a period of time, the inclined design of the return pipe can ensure that the natural gas in the detector is completely discharged into the gas storage tank, and meanwhile, the natural gas entering the gas storage tank is discharged through the exhaust pipe during standing due to the opening of the second knob, so that the natural gas in the gas storage tank is completely discharged, the service life is prolonged, and the next detection is facilitated.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the gas storage tank;
in the figure: the gas sampling device comprises a conveying pipe 1, a first fixing plate 2, a sealing ring 3, a second fixing plate 4, a hexagonal screw 5, a hexagonal screw cap 6, a connecting pipe 7, a first sampling pipe 8, a first valve 9, a first knob 10, a gas storage tank 11, an exhaust pipe 12, a second valve 13, a second knob 14, a second sampling pipe 15, a third valve 16, a third knob 17, a detector 18, a control panel 19, a pressure block 20, a first compression spring 21, a backflow pipe 22, a fourth valve 23, a fourth knob 24, a first rubber layer 25, a first cavity 26, a first gas groove 27, a second gas groove 28, a second compression spring 29, a second rubber layer 30, a second cavity 31, a rubber bulge 32 and a third compression spring 33.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 2, the natural gas pipeline sampling valve of the present invention includes a conveying pipe 1 and a connecting pipe 7, wherein two ends of the connecting pipe 7 are fixedly connected with a second fixing plate 4; the conveying pipes 1 are 2 in number and are positioned at two ends of the connecting pipe; one end of the conveying pipe 1 close to the connecting pipe 7 is fixedly connected with a first fixing plate 2; the first fixing plate 2 and the corresponding second fixing plate 4 are fixed through a hexagonal screw 5 and a hexagonal screw cap 6, and a sealing ring 3 is arranged between the first fixing plate 2 and the corresponding second fixing plate 4; the surface of the connecting pipe 7 is fixedly connected with a first sampling pipe 8, the surface of the first sampling pipe 8 is fixedly connected with a first valve 9, one end of the first valve 9 is movably connected with a first knob 10, the upper end of the first sampling pipe 8 is fixedly connected with a gas storage tank 11, the upper end of the gas storage tank 11 is fixedly connected with an exhaust pipe 12, the outer side of the exhaust pipe 12 is fixedly connected with a second valve 13, one end of the second valve 13 is movably connected with a second knob 14, the surface of the gas storage tank 11 is fixedly connected with a second sampling pipe 15, the outer side of the second sampling pipe 15 is fixedly connected with a third valve 16, and the upper end of the third valve 16 is movably connected with a third knob 17; a detector 18 is fixedly connected to one end of the second sampling tube 15, which is far away from the gas storage tank 11, and a control panel 19 is fixedly connected to the front end of the detector 18; when the device works, a user penetrates through the first fixing plate 2, the sealing ring 3 and the second fixing plate 4 through the hexagon screws 5, then the hexagon screws 5 and the hexagon screw caps 6 are screwed tightly by using a hexagon wrench, natural gas enters the first sampling tube 8, the first valve 9 is rotated to enable the natural gas to enter the gas storage tank 11, the first sampling tube 8 is closed by rotating the first valve 9, so that the natural gas can be stored in the gas storage tank 11 to prevent the natural gas from flowing back, meanwhile, the amount of the taken natural gas is more than that of the prior art, the leakage of the natural gas is effectively prevented, when detection is needed, the third knob 17 is rotated to open the third valve 16, the gas enters the detector 18 through the second sampling tube 15, the detector 18 can analyze the entered gas, the natural gas can be directly detected by the natural gas entering detector 18, and related data of the natural gas can be directly read out through the control panel 19, take out the natural gas and take back laboratory service equipment again and detect for traditional and have the ageing more, saved not few trouble for the measurement personnel, practiced thrift not less time, because it is direct to detect the natural gas, more accurate for traditional testing result, testing result has the ageing more, when detecting finishing, rotatory No. two knob 14 opens No. two valves 13, lets the natural gas discharge from blast pipe 12, has prevented the natural gas effectively and has corroded equipment.
As an embodiment of the invention, the upper and lower inner walls of the gas storage tank 11 are both arc-shaped, and a pressure block 20 is connected in the gas storage tank 11 in a sliding way; a first compression spring 21 is fixedly connected between the upper surface of the pressure block 20 and the upper inner wall of the gas storage tank 11; the upper surface and the lower surface of the pressure block 20 are both arc-shaped, and the circumference of the pressure block 20 is in sealed sliding connection with the inner wall of the gas storage tank 11; a return pipe 22 is fixedly connected between the detector 18 and the gas storage tank 11; one end of the return pipe 22 is communicated with the natural gas detection space in the detector 18, the other end is communicated with the interior of the gas storage tank 11, and the communication position is positioned above the side wall of the gas storage tank 11; the surface of the return pipe 22 is fixedly connected with a fourth valve 23; one end of the fourth valve 23 is movably connected with a fourth knob 24; when the natural gas detector works, after the first knob 10 is opened, in the process that natural gas enters the gas storage tank 11, along with the increase of the injection amount of the natural gas, the air pressure below the pressure block 20 rises to push the pressure block 20 to move upwards to extrude the first compression spring 21, the communication position between the second sampling tube 15 and the gas storage tank 11 is opened after the pressure block 20 moves upwards, after the first knob 10 is opened for a period of time, the pressure block 20 moves upwards to the highest position, the first knob 10 is closed, the third knob 17 is opened, the natural gas below the pressure block 20 in the gas storage tank 11 enters the detector 18 through the second sampling tube 15, at the moment, the pressure block 20 extrudes the natural gas due to the gravity action of the pressure block 20 and the elastic force action of the first compression spring 21, so that the natural gas entering the detector 18 is compressed, the natural gas density is improved, the detection accuracy of the detector is effectively improved, and the fourth knob 24 is opened after the detection, the natural gas in the detector 18 flows into the space in the gas storage tank 11 above the pressure block 20 through the return pipe 22, the time for the natural gas to stay in the detector 18 can be prolonged through the manual control of the switch of the fourth knob 24, the detection time can be prolonged, the detection accuracy is further improved, the natural gas is extruded due to the extrusion effect of the pressure block 20, the air pressure is increased, after the fourth knob 24 is opened, the flow rate of the natural gas in the return pipe 22 is increased, the speed for the natural gas to flow out of the detector 18 can be increased, the content of the natural gas in the detector 18 is reduced, the corrosion degree of the detector 18 is reduced, the service life is prolonged, the second knob 14 is opened before the fourth knob 24 is opened, the quick discharge of the natural gas is ensured, the third knob 17, the fourth knob 24 and the second knob 14 are closed after the discharge, and the detection of the natural gas.
As an embodiment of the invention, the inner wall of the bottom of the gas storage tank 11 is fixedly connected with a No. one rubber layer 25; a first cavity 26 is formed in the first rubber layer 25; the first cavity 26 is communicated with the air outside the gas storage tank 11 through a first gas groove 27, and the first cavity 26 is communicated with the communication position of the second sampling tube 15 and the gas storage tank 11 through a second gas groove 28; check valves are arranged in the first air groove 27 and the second air groove 28, so that the external air is ensured to enter the first cavity 26 and then enter the second sampling tube 15 through the second air groove 28; when the gas storage device works, after the third knob 17 is opened, the pressure block 20 moves downwards, and as the fourth knob 24 is not opened, part of natural gas still remains below the pressure block 20 after the natural gas enters the detector 18, after the fourth knob 24 is opened, the natural gas in the detector 18 flows into the gas storage tank 11 through the return pipe 22, at the moment, the pressure block 20 moves downwards instantly under the action of gravity and the elastic force of the first compression spring 21 to contact and press the first rubber layer 25, so that the gas in the first cavity 26 in the first rubber layer 25 is sprayed out through the second gas groove 28, when the pressure block 20 contacts the first rubber layer 25, the natural gas in the gas storage tank 11 below the pressure block 20 enters the second sampling pipe 15, at the moment, the gas in the first cavity 26 is sprayed out through the second gas groove 28 and is positioned at the tail part of the natural gas, the natural gas is pushed to pass through the detector 18, so that the residual natural gas is discharged out of the detector 18, prevent that more natural gas from remaining in detector 18, causing detector 18 internal corrosion, improve detector 18 life, the natural gas exhaust detector 18 after will detecting simultaneously prevents that the natural gas remaining in the natural gas detection process next time from influencing and detecting the precision.
As an embodiment of the present invention, a second compression spring 29 is fixedly connected in the first cavity 26; when the device works, when the pressure block 20 moves downwards instantly to extrude the first rubber layer 25, due to the resilience of the first compression spring 21 and the second compression spring 29, the first rubber layer 25 vibrates after being extruded, so that the first cavity 26 expands and contracts intermittently, air is sucked into the outside through the first air groove 27 in the expansion process of the first cavity 26, air flows into the second sampling tube 15 through the second air groove 28 in the contraction process of the first cavity 26, the amount of the outside air entering the detector 18 is further increased, the discharge amount of natural gas in the detector 18 is increased, the content of the natural gas in the detector 18 is further reduced after the detection of the detector 18 is completed, the service life and the detection accuracy are improved, meanwhile, the pressure block 20 moves upwards in the next detection, more outside air can be sucked into the first cavity 26 through the second compression spring 29, and the discharge of residual natural gas in the detector 18 after each detection is completed is ensured, the service life is prolonged.
As an embodiment of the invention, a second rubber layer 30 is fixedly connected to the lower surface of the pressure block 20; a second cavity 31 is formed in the second rubber layer 30; the lower surface of the second rubber layer 30 is fixedly connected with rubber bulges 32 which are uniformly arranged; the rubber protrusions 32 are made of hard rubber materials; one end of the rubber bulge 32 penetrates into the second cavity 31, and a third compression spring 33 is fixedly connected between one end of the rubber bulge 32 in the second cavity 31 and the inner wall of the second cavity 31; when the pressure block 20 contacts and extrudes the first rubber layer 25, the impact force of the pressure block 20 on the gas storage tank 11 is reduced by matching the second rubber layer 30 with the first rubber layer 25, the service life of the gas storage tank 11 is prolonged, meanwhile, when the second rubber layer 30 extrudes the first rubber layer 25, gas in the second cavity 31 is extruded, the extrusion force degree on the first rubber layer 25 can be improved by the rubber bulge 32, meanwhile, the third compression spring 33 is matched with the second compression spring 29 and the third compression spring 33, after the pressure block 20 impacts the first rubber layer 25, the rebound resilience of the first compression spring 21, the second compression spring 29 and the third compression spring 33 enables the first compression spring 21, the second compression spring 29 and the third compression spring 33 to reciprocate, the vibration amplitude of the first rubber layer 25 is further improved, and the first cavity 26 enables more air to be sucked into the tester 18 from the outside, further improve the inside natural gas exhaust efficiency of tester 18, improve life.
In one embodiment of the invention, the return line 22 is designed to be inclined upward toward the gas storage tank 11 by the detector 18; during operation, through the back flow 22 slope design, after opening No. four knobs 24 and No. two knobs, a period of in-process of stewing because the natural gas is lighter for the air, the natural gas slowly floats in the air, can guarantee in the detector 18 that the slope design of back flow 22 discharges to the gas storage tank 11 completely, get into in the gas storage tank 11 simultaneously natural gas because No. two knobs 14 are opened, the in-process natural gas of stewing passes through blast pipe 12 and discharges, thereby make the natural gas discharge completely in the gas storage tank 11, and the service life is prolonged, convenient next time of detection.
The specific working process is as follows:
when the device works, a user penetrates through the first fixing plate 2, the sealing ring 3 and the second fixing plate 4 through the hexagon screw 5, then the hexagon screw 5 and the hexagon nut 6 are screwed by using a hexagon wrench, natural gas enters the first sampling tube 8, the first valve 9 is rotated to enable the natural gas to enter the gas storage tank 11, the first sampling tube 8 is closed by rotating the first valve 9, the natural gas can be stored in the gas storage tank 11 to prevent the natural gas from flowing back, when detection is needed, the third knob 17 is rotated to open the third valve 16, the gas enters the detector 18 through the second sampling tube 15, the detector 18 analyzes the entered gas, related data of the natural gas can be directly read out through the control panel 19, when the detection is finished, the second knob 14 is rotated to open the second valve 13, the natural gas is discharged from the exhaust pipe 12, after the first knob 10 is opened, when the natural gas enters the gas storage tank 11, along with the increase of the injection amount of the natural gas, the air pressure below the pressure block 20 rises, the pressure block 20 is pushed to move upwards, the first compression spring 21 is extruded, after the pressure block 20 moves upwards, the communication position between the second sampling tube 15 and the gas storage tank 11 is opened, after the first knob 10 is opened for a period of time, the pressure block 20 moves up to the highest position, the first knob 10 is closed, the third knob 17 is opened, natural gas below the pressure block 20 in the gas storage tank 11 enters the detector 18 through the second sampling tube 15, after the detection is finished, the fourth knob 24 is opened, so that the natural gas in the detector 18 flows into the inner space of the gas storage tank 11 above the pressure block 20 through the return pipe 22, the second knob 14 is turned on before the fourth knob 24 is turned on, natural gas is discharged quickly, the third knob 17, the fourth knob 24 and the second knob 14 are turned off after the natural gas is discharged in a standing mode for a period of time, and the next detection of the natural gas is waited;
after the third knob 17 is opened, the pressure block 20 moves downwards, and because the fourth knob 24 is not opened, part of natural gas still remains below the pressure block 20 after the natural gas enters the detector 18, when the fourth knob 24 is opened, the natural gas in the detector 18 flows into the gas storage tank 11 through the return pipe 22, at this time, the pressure block 20 moves downwards instantly under the action of gravity and the elastic force of the first compression spring 21 to contact and press the first rubber layer 25, so that the gas in the first cavity 26 in the first rubber layer 25 is sprayed out through the second gas tank 28, when the pressure block 20 contacts the first rubber layer 25, the natural gas in the gas storage tank 11 below the pressure block 20 enters the second sampling pipe 15, at this time, the gas in the first cavity 26 is sprayed out through the second gas tank 28 and is positioned at the tail part of the natural gas, the natural gas is pushed to pass through the detector 18, so that the residual natural gas is discharged out of the detector 18, and when the pressure block 20 moves downwards instantly, the first rubber layer 25 vibrates after being extruded due to the resilience of the first compression spring 21 and the second compression spring 29, so that the first cavity 26 intermittently expands and contracts, air is sucked into the outside through the first air groove 27 in the expansion process of the first cavity 26, gas flows into the second sampling pipe 15 through the second air groove 28 in the contraction process of the first cavity 26, the amount of the outside air entering the detector 18 is further increased, the natural gas slowly floats in the air due to the fact that the natural gas is lighter than the air in the standing process after the fourth knob 24 and the second knob are opened through the inclined design of the return pipe 22, the natural gas in the detector 18 can be completely discharged into the gas storage tank 11 due to the inclined design of the return pipe 22, the natural gas entering the gas storage tank 11 is discharged through the exhaust pipe 12 in the standing process due to the opening of the second knob 14, thereby allowing the natural gas in the gas storage tank 11 to be completely discharged.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a natural gas line sampling valve, includes conveyer pipe (1) and connecting pipe (7), its characterized in that: two ends of the connecting pipe (7) are fixedly connected with a second fixing plate (4); the conveying pipes (1) are (2) in number and are positioned at two ends of the connecting pipe; one end of the conveying pipe (1) close to the connecting pipe (7) is fixedly connected with a first fixing plate (2); the first fixing plate (2) and the corresponding second fixing plate (4) are fixed through a hexagonal screw (5) and a hexagonal screw cap (6), and a sealing ring (3) is arranged between the first fixing plate (2) and the corresponding second fixing plate (4); the surface of the connecting pipe (7) is fixedly connected with a first sampling pipe (8), the surface of the first sampling pipe (8) is fixedly connected with a first valve (9), one end of the first valve (9) is movably connected with a first knob (10), the upper end of the first sampling pipe (8) is fixedly connected with a gas storage tank (11), the upper end of the gas storage tank (11) is fixedly connected with an exhaust pipe (12), the outer side of the exhaust pipe (12) is fixedly connected with a second valve (13), one end of the second valve (13) is movably connected with a second knob (14), the surface of the gas storage tank (11) is fixedly connected with a second sampling pipe (15), the outer side of the second sampling pipe (15) is fixedly connected with a third valve (16), and the upper end of the third valve (16) is movably connected with a third knob (17); and one end of the second sampling tube (15) far away from the gas storage tank (11) is fixedly connected with a detector (18), and the front end of the detector (18) is fixedly connected with a control panel (19).
2. The natural gas pipeline sampling valve of claim 1, wherein: the upper inner wall and the lower inner wall of the gas storage tank (11) are both arc-shaped, and a pressure block (20) is connected in the gas storage tank (11) in a sliding manner; a first compression spring (21) is fixedly connected between the upper surface of the pressure block (20) and the upper inner wall of the gas storage tank (11); the upper surface and the lower surface of the pressure block (20) are both designed in an arc shape, and the periphery of the pressure block (20) is in sealed sliding connection with the side inner wall of the gas storage tank (11); a return pipe (22) is fixedly connected between the detector (18) and the gas storage tank (11); one end of the return pipe (22) is communicated with a natural gas detection space in the detector (18), the other end of the return pipe is communicated with the interior of the gas storage tank (11), and the communication position is positioned above the side wall of the gas storage tank (11); the surface of the return pipe (22) is fixedly connected with a fourth valve (23); one end of the fourth valve (23) is movably connected with a fourth knob (24).
3. A natural gas pipeline sampling valve according to claim 2, wherein: the inner wall of the bottom of the gas storage tank (11) is fixedly connected with a first rubber layer (25); a first cavity (26) is formed in the first rubber layer (25); the first cavity (26) is communicated with the external air of the gas storage tank (11) through a first gas groove (27), and the first cavity (26) is communicated with the communication position of a second sampling pipe (15) and the gas storage tank (11) through a second gas groove (28); all be equipped with the check valve in a gas tank (27) and No. two gas tanks (28), guarantee that outside air gets into cavity (26) after the entering through No. two gas tanks (28) get into No. two sampling tube (15) inside.
4. A natural gas pipeline sampling valve according to claim 2, wherein: and a second compression spring (29) which is uniformly arranged is fixedly connected in the first cavity (26).
5. A natural gas pipeline sampling valve according to claim 3, wherein: the lower surface of the pressure block (20) is fixedly connected with a second rubber layer (30); a second cavity (31) is formed in the second rubber layer (30); the lower surface of the second rubber layer (30) is fixedly connected with rubber bulges (32) which are uniformly distributed; the rubber protrusions (32) are made of hard rubber materials; rubber arch (32) one end penetrates and sets up in No. two cavities (31), and rubber arch (32) link firmly No. three compression spring (33) between the one end in No. two cavities (31) and No. two cavity (31) inner walls.
6. A natural gas pipeline sampling valve according to claim 3, wherein: the return pipe (22) is designed to be inclined upwards by the detector (18) towards the gas storage tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989403.9A CN111999128A (en) | 2020-09-18 | 2020-09-18 | Natural gas line sampling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989403.9A CN111999128A (en) | 2020-09-18 | 2020-09-18 | Natural gas line sampling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111999128A true CN111999128A (en) | 2020-11-27 |
Family
ID=73475617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010989403.9A Withdrawn CN111999128A (en) | 2020-09-18 | 2020-09-18 | Natural gas line sampling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111999128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383048A (en) * | 2021-12-20 | 2022-04-22 | 徐州沐和水处理设备有限公司 | Intelligent energy-saving monitoring equipment for urban domestic water delivery pipe |
| CN116718438A (en) * | 2023-08-07 | 2023-09-08 | 苏州杜尔气体化工装备有限公司 | Gas quality detection sampling device for natural gas skid-mounted gas station |
-
2020
- 2020-09-18 CN CN202010989403.9A patent/CN111999128A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383048A (en) * | 2021-12-20 | 2022-04-22 | 徐州沐和水处理设备有限公司 | Intelligent energy-saving monitoring equipment for urban domestic water delivery pipe |
| CN116718438A (en) * | 2023-08-07 | 2023-09-08 | 苏州杜尔气体化工装备有限公司 | Gas quality detection sampling device for natural gas skid-mounted gas station |
| CN116718438B (en) * | 2023-08-07 | 2023-10-27 | 苏州杜尔气体化工装备有限公司 | Gas quality detection sampling device for natural gas skid-mounted gas station |
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Application publication date: 20201127 |