Miniature gas storage tank and inflation cleaning device

Abstract

The utility model belongs to the technical field of gas detection, and particularly relates to a miniature gas storage tank and an inflation cleaning device, the miniature gas storage tank comprises a tank body, two pierceable sealing caps and a pressure monitor, the tank body is provided with three connecting joints, namely a connecting joint I, a connecting joint II and a connecting joint III, which are communicated with the tank body; the two pierceable sealing caps are the first pierceable sealing cap and the second pierceable sealing cap respectively, the first pierceable sealing cap is used for sealing the first connector, the second pierceable sealing cap is used for sealing the second connector, and the pressure monitor is installed on the third connector. The miniature gas storage tank disclosed by the utility model can be used for sampling by using a gas phase sample injection needle and is used for implementing field metering work of a gas chromatograph.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gas detection, specifically a kind of micro gas storage tank and its cleaning device. BACKGROUND

[0002] When the gas chromatograph is measured, the technician carries out measurement according to JJG 700-2016 Gas Chromatograph Verification Regulation on site, and there may be a situation of using a sample needle to sample nitrogen methane standard substance alkane. Generally, commercially available nitrogen methane standard substance is stored in a 2L or 4L high-pressure cylinder, which is very inconvenient to carry.

[0003] Chinese patent CN202323401490.X discloses a gas storage assembly and a high-pressure gas storage cylinder, which includes a cylinder, a plug arranged at the bottom of the cylinder to block the bottom of the cylinder, an auxiliary assembly arranged at the top of the cylinder, the auxiliary assembly including a lifting ring for assembly with a lifting device and a control valve for controlling the communication or disconnection between the cylinder and the outside. The high-pressure gas storage cylinder provided by the utility model can be safely and stably hoisted and carried, but it is not suitable for sampling during gas chromatograph inspection, and it is not convenient to carry.

[0004] Chinese patent CN202322151897.5 discloses a portable cylinder for detecting gas batch calibration, which includes a portable cylinder part including a cylinder body and a delivery pipe connected to the inner middle part of the upper end of the cylinder body; a locking part including a group of supports connected to the upper end part of the delivery pipe, a locking column penetrating the middle part of the support, and a locking nut connected to the end part of the locking column; a protection part connected to the outer surface position of the cylinder body; a carrying frame connected to the outer edge of the upper end of the cylinder body; the protection part includes a group of protection rings sleeved on the upper and lower outer surfaces of the cylinder body, a plurality of equidistant supports connected to the outer surface of the protection ring, and a protection column connected to the vertical surface of the adjacent group of supports at the end. Although the cylinder is convenient to carry, it needs to be opened by locking nut when sampling, and the gas is discharged from the delivery pipe, but only a small amount of gas is needed when the gas chromatograph is measured, so the amount of discharge is difficult to control. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of micro gas storage tank to overcome the problem of inconvenient carrying and gas chromatograph on-site measurement sampling difficulty in the prior art.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] A kind of micro gas storage tank, including tank body, two can be pierced sealing cap, pressure monitor, three connection joints are provided with on the tank body, and are connected with tank body respectively, are connection joint one, connection joint two, connection joint three.Connection joint one is sealed by the can be pierced sealing cap one for connection joint, the can be pierced sealing cap two is used for connection joint two to be sealed, and the pressure monitor is installed on connection joint three.

[0008] Preferably: the can be pierced sealing cap includes shell and elastic sealing pad, the top of the shell is provided with through hole, the lower inner wall of the shell is provided with internal thread, and the elastic sealing pad is arranged in the shell.

[0009] Preferably: the bottom of the tank body is provided with base.

[0010] Preferably: the elastic sealing pad is stepped elastic sealing pad.

[0011] Preferably: the can be pierced sealing cap one is sealed by thread connection with connection joint one, the can be pierced sealing cap two is sealed by thread connection with connection joint two, and the pressure monitor is sealed by thread connection with connection joint three.

[0012] Another purpose of the utility model is to provide a kind of inflation cleaning device of micro gas storage tank, for the inflation and cleaning of the above-mentioned micro gas storage tank, including mounting seat, vertical mounting frame is installed on the mounting seat, support plate is installed on the outside of the mounting frame, cylinder is installed on the bottom side of the support plate, the acting rod top end of the cylinder is installed with movable plate.

[0013] Slide hole, slide hole is opened in the vertical side wall of the mounting frame, fixed plate is slidably installed in the slide hole, one end of the movable pipe is fixed on the movable plate.

[0014] Fixed cylinder, fixed cylinder is installed on the bottom side of the fixed plate, through hole is opened in the bottom of the fixed cylinder, gas needle is fixed in the inner wall of the top of the fixed cylinder, and the gas needle is penetrated into the through hole in the bottom of the fixed cylinder.

[0015] Movable pipe, the movable pipe is sleeved outside the gas needle, and the movable pipe is located in the through hole in the bottom of the fixed cylinder, the top side of the movable pipe is opened with second air hole, the top end of the gas needle is opened with first air hole, and the first air hole and the second air hole are opened in up-down staggered mode.

[0016] Extrusion ring, extrusion ring is sleeved on the top outside of the movable pipe, and spring is fixed between the extrusion ring and the bottom side wall of the fixed cylinder.

[0017] Preferably, the bottom side of the extrusion ring is provided with an annular groove, and a pilot lamp is mounted in the annular groove, and a light ring generated by the pilot lamp can accurately identify the puncture position when the air needle punctures downward.

[0018] Preferably, the top side of the mounting frame is provided with an air pump, and the air inlet port of the air pump is connected with a standard gas tank, so that the standard gas can be introduced to cooperate with the cleaning operation.

[0019] Preferably, one side of the top of the mounting frame is provided with a fixed tube, one end of the inside of the fixed tube is inserted with a movable plug rod, one end of the movable plug rod is provided with an electric heating wire, and the electric heating wire is provided with a notch, the electric heating wire is assembled with a liquid tank, the side surface of the fixed tube is provided with a screw hole, the screw hole is assembled with a locking screw rod, and the end surface of the locking screw rod is in contact with the outer surface of the movable plug rod, the other end of the movable plug rod is assembled with a heating switch, the heating switch is used for starting and stopping control of the liquid tank, colored gas can be generated to identify the two-stage exhaust process, and the cleaning of the tank body can be ensured to be complete.

[0020] Preferably, the other end cavity of the fixed tube is in communication with the electric heating wire, the air outlet port of the air pump is in communication with the other end cavity of the fixed tube, and the other end cavity of the fixed tube is in communication with the fixed cylinder through the connecting pipe.

[0021] The utility model discloses the beneficial effect that:

[0022] 1. When sampling, the gas phase sampling needle enters from the through hole, punctures the elastic sealing gasket to enter the tank body, and the gas phase sampling needle enters the tank body to sample. After sampling is completed, the gas phase sampling needle injects the sample into the gas chromatograph, and the gas chromatograph carries out on-site metering work according to the sampling of the gas phase sampling needle, so that the miniature gas storage tank can be used for sampling by the gas phase sampling needle and used for the implementation of on-site metering work of the gas chromatograph.

[0023] 2. Because the elastic sealing gasket is arranged, the operation can be completed when sampling and cleaning through the rubber sealing gasket punctured by the air needle, the sealing property of the tank body can be guaranteed, the purity of the sampling gas in the tank body is guaranteed, and the detection data is more accurate.

[0024] 3. When the air is filled and cleaned, the air needle moves downward to the bottom of the tank body, so that the second gas hole and the first gas hole can be overlapped, air can be introduced through the overlapping space of the second gas hole and the first gas hole, and through the above process, when the bottom end of the air needle reaches the position of the bottom of the tank body during cleaning, ventilation cleaning can be realized, the gas in the tank body flows out from the bottom upward, the cleaning can be more complete, and the waste of standard gas is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the tank.

[0027] Figure 2 A schematic diagram of a tank structure without an insertable sealing cap and pressure monitor;

[0028] Figure 3 This is a cross-sectional view of the piercing sealing cap.

[0029] Figure 4 A three-dimensional structural diagram of an air-filling and cleaning device for a miniature gas storage tank;

[0030] Figure 5 A top view of the inflation and cleaning device for a miniature gas storage tank.

[0031] Figure 6 for Figure 5 Schematic diagram of the structure in sectional view along the AA section;

[0032] Figure 7 Schematic diagram of the sliding plug installation structure;

[0033] Figure 8 for Figure 6 Schematic diagram of the structure of region B along the middle edge;

[0034] In the diagram: 1. Base; 2. Tank body; 201. Connecting joint one; 202. Connecting joint two; 203. Connecting joint three; 301. Insertable sealing cap one; 302. Insertable sealing cap two; 303. Pressure monitor; 4. Outer shell; 401. Through hole; 402. Internal thread; 5. Elastic sealing gasket; 6. Mounting base; 7. Mounting bracket; 8. Cylinder; 9. Support plate; 10. First air hole; 11. Sliding hole; 12. Compression ring; 13. Movable plate; 14. Fixed cylinder; 15. Air pump; 16. Fixed pipe; 17. Connecting pipe; 18. Spring; 19. Air needle; 20. Fixed plate; 21. Movable pipe; 22. Indicator light; 23. Second air hole; 24. Movable insertion rod; 25. Heating switch; 26. Liquid tank; 27. Heating wire; 28. Locking screw. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0036] This embodiment provides a miniature gas storage tank, such as Figures 1-3 As shown, the device includes a tank body 2, two piercing sealing caps, and a pressure monitor 303. In another embodiment, a base 1 is provided at the bottom of the tank body 2. The tank body 2 has three connecting joints communicating with it: connecting joint one 201, connecting joint two 202, and connecting joint three 203. The two piercing sealing caps are piercing sealing cap one 301 and piercing sealing cap two 302. Piercing sealing cap one 301 is used to seal connecting joint one 201, and piercing sealing cap two 302 is used to seal connecting joint two 202. The pressure monitor 303 is mounted on connecting joint three 203 and is a DV-3000 type electronic pressure monitor (barometer) that displays the internal pressure. In another embodiment, the first insertable sealing cap 301 and the first connecting joint 201 are sealed by a threaded connection, the second insertable sealing cap 302 and the second connecting joint 202 are sealed by a threaded connection, and the pressure monitor 303 and the third connecting joint 203 are sealed by a threaded connection.

[0037] In another embodiment, the insertable sealing cap includes a housing 4 and an elastic sealing gasket 5. The housing 4 has a through hole 401 at its top, allowing the inflation needle / sampling needle to pass through the elastic sealing gasket 5 and enter the canister 2. The lower inner wall of the housing 4 has an internal thread 402. The elastic sealing gasket 5 is disposed within the housing 4, and its material can be elastic materials such as rubber, silicone, or special plastics. In another embodiment, the elastic sealing gasket 5 is a stepped elastic sealing gasket, with the thinner lower end engaging with the canister connector, and the upper end tightened by the housing 4 to achieve a sealing effect.

[0038] During sampling, the gas chromatograph injection needle is inserted through the through-hole 401, piercing the elastic sealing gasket 5 and entering the tank 2. After sampling, the gas chromatograph injection needle injects the sample into the gas chromatograph. The gas chromatograph performs on-site measurement based on the sample taken by the gas chromatograph injection needle. Therefore, the miniature gas storage tank of this invention can use a gas chromatograph injection needle for sampling and on-site measurement by the gas chromatograph.

[0039] A method for using a miniature gas storage tank includes the following steps:

[0040] Step 1, flushing the miniature gas storage tank: Connect the standard gas cylinder to the pipeline, and insert the gas needle through the piercing seal cap 301 into the tank body 2. Remove the piercing seal cap 302 from the connector 202, opening the tank body 2 to the atmosphere. Turn on the standard gas cylinder supply, controlling the input pressure between 350kPa and 500kPa. Standard gas enters the tank body 2 through the piercing seal cap 301 and exits through the connector 202. This operation flushes the tank body clean with standard gas.

[0041] Step 2, Inflating the Miniature Gas Storage Tank: Based on Step 1, with the standard gas cylinder supply open, use the piercing sealing cap 302 to connect and seal the connector 202. Observe the pressure monitor 303; inflation is complete once the pressure stabilizes. After inflation, remove the inflation needle; the tank is now sealed.

[0042] Step 3, Sampling of the miniature gas storage tank: Bring the fully inflated miniature gas storage tank to the gas chromatograph. Use a sampling needle to pierce the elastic sealing gasket 5 through either the piercing sealing cap 301 or the piercing sealing cap 302, and then into the tank 2 to collect the sample. After collecting the sample, inject it into the gas chromatograph for analysis. Example

[0043] This embodiment provides an inflation and cleaning device for a miniature gas storage tank, used for inflation and cleaning of the miniature gas storage tank in Embodiment 1, such as... Figures 3-7 As shown, it includes a mounting base 6, on which a mounting frame 7 is vertically mounted. A support plate 9 is mounted on the outer side of the mounting frame 7. A cylinder 8 is mounted on the bottom side of the support plate 9. A movable plate 13 is mounted on the top of the actuating rod of the cylinder 8.

[0044] A sliding hole 11 is provided in the vertical side wall of the mounting bracket 7. A fixed plate 20 is slidably installed in the sliding hole 11, and one end of the movable tube 21 is fixed on the movable plate 13.

[0045] A fixed cylinder 14 is installed on the bottom side of the fixed plate 20. A through hole is opened at the bottom of the fixed cylinder 14. An air needle 19 is fixed on the inner wall of the top of the fixed cylinder 14 and passes through the through hole at the bottom of the fixed cylinder 14.

[0046] The movable tube 21 is fitted outside the air needle 19 and is located in the through hole at the bottom of the fixed cylinder 14. A second air hole 23 is provided on the top side of the movable tube 21 and a first air hole 10 is provided on the top of the air needle 19. The first air hole 10 and the second air hole 23 are staggered vertically.

[0047] The extrusion ring 12 is sleeved on the top outer side of the movable tube 21, and the spring 18 is fixed between the extrusion ring 12 and the bottom side wall of the fixed cylinder 14.

[0048] The bottom side of the extrusion ring 12 is provided with an annular groove, and the annular groove is provided with an indicating lamp 22. The light ring generated by the indicating lamp 22 can accurately identify the puncture position when the air needle 19 punctures downward.

[0049] The air pump 15 is mounted on the top side of the mounting frame 7, and the air inlet port of the air pump 15 is connected with a standard gas tank.

[0050] The fixed tube 16 is mounted on one side of the top of the mounting frame 7, one end of the inside of the fixed tube 16 is inserted with a movable plug rod 24, one end of the movable plug rod 24 is provided with a heating wire 27, and the heating wire 27 is provided with a cutout, the heating wire 27 is assembled with a liquid tank 26, the side surface of the fixed tube 16 is provided with a screw hole, the screw hole is assembled with a locking screw 28, and the end surface of the locking screw 28 is in contact with the outer surface of the movable plug rod 24, the other end of the movable plug rod 24 is assembled with a heating switch 25, the heating switch 25 is used for starting and stopping control of the liquid tank 26, colored gas can be generated to identify the two-stage exhaust process, and the cleaning of the tank body 5 can be ensured.

[0051] The other end cavity of the fixed tube 16 is communicated with the heating wire 27, the exhaust end of the air pump 15 is communicated with the cavity at the other end of the fixed tube 16, the cavity at the other end of the fixed tube 16 is communicated with the fixed cylinder 14 through the connecting pipe 17, and the overall air intake operation is realized.

[0052] When the micro gas tank is cleaned, the penetrable sealing cap 2 302 is removed from the connecting joint 2 202, the micro gas tank is placed on the mounting seat 6, so that the penetrable sealing cap 1 301 is located directly below the air needle 19, the air cylinder 8 works, under the cooperation of the contraction operation of the air cylinder 8, the movable plate 13 can be driven to move downward, the fixed plate 20 is driven to slide downward along the sliding hole 11, one end of the air needle 19 penetrates the elastic sealing pad 5 of the penetrable sealing cap 1 301 and enters the tank body 2, when the bottom side of the extrusion ring 12 contacts the top of the shell 4, it indicates that the air needle 19 is close to the bottom of the tank body 2, because the extrusion ring 12 first contacts the top side of the shell 4, as the fixed plate 20 continues to descend, the spring 18 is compressed, and the movable tube 21 slides relative to the air needle 19, so that the second gas hole 23 coincides with the first gas hole 10, and the air inlet can be achieved through the coinciding space of the second gas hole 23 and the first gas hole 10, at this time, the bottom end of the air needle 19 is to the bottom of the tank body 2, and the gas flows out from the connecting joint 2 202, through the above process, when the bottom end of the air needle 19 is to the bottom of the tank body 2 during cleaning, the air cleaning can be achieved, the gas in the tank body 2 moves upward from the bottom and flows out from the connecting joint 2 202, which can ensure more complete cleaning and reduce the waste of standard gas.

[0053] During the cleaning and air inlet process, in the first stage, the air inlet is achieved by opening the heating switch 25 to open the liquid tank 26, heating the liquid pigment in the heating wire 27 through the liquid tank 26, so that the liquid pigment is vaporized, and the mixed vaporized liquid pigment is formed when the gas is delivered through the air pump 15, and the colored gas is discharged, when the port of the connecting joint 2 202 appears colored gas during the first stage cleaning, it indicates that the gas in the tank body 2 is completely cleaned.

[0054] Then the second stage of air charging is carried out, then the normal gas enters the tank body 2 by the pipe heating switch 25 and the heating operation of the liquid tank 26, when the colored gas in the first stage is completely removed, it indicates that the tank body 2 is completely cleaned, then the penetrable sealing cap 2 302 is connected and sealed with the connecting joint 2 202, at this time, the gas continuously enters the tank body 2, and the pressure monitor 303 is observed, and the air charging is completed after the pressure is stable, the air cylinder 8 goes up until the air needle 19 is separated from the tank body 2, at this time, the tank body 2 is in a sealed state, the air cylinder 8 goes up to the original position, and the air charging of the tank body 2 is completed.

[0055] The above shows and describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A micro gas reservoir, characterized by, The application relates to a micro gas storage tank, which comprises a tank body (2), two penetrable sealing caps, a pressure monitor (303), wherein three connecting joints (201, 202 and 203) are arranged on the tank body (2) and are communicated with the tank body (2); the two penetrable sealing caps are respectively a penetrable sealing cap one (301) and a penetrable sealing cap two (302), the penetrable sealing cap one (301) is used for sealing the connecting joint one (201), the penetrable sealing cap two (302) is used for sealing the connecting joint two (202), and the pressure monitor (303) is arranged on the connecting joint three (203).

2. A micro gas reservoir according to claim 1, characterized in that: The penetrable sealing cap comprises an outer shell (4) and an elastic sealing pad (5), a through hole (401) is arranged at the top of the outer shell (4), an inner thread (402) is arranged on the inner wall of the lower part of the outer shell (4), and the elastic sealing pad (5) is arranged in the outer shell (4).

3. A micro gas reservoir according to claim 2, wherein: A base (1) is arranged at the bottom of the tank body (2).

4. A micro gas reservoir according to claim 3, wherein: The elastic sealing pad (5) is a stepped elastic sealing pad.

5. A micro gas reservoir according to claim 4, characterised in that: The penetrable sealing cap one (301) is sealed with the connecting joint one (201) through threaded connection, the penetrable sealing cap two (302) is sealed with the connecting joint two (202) through threaded connection, and the pressure monitor (303) is sealed with the connecting joint three (203) through threaded connection.

6. A device for purging a micro gas reservoir, characterized in that The application relates to a gas filling and cleaning device for the micro gas storage tank in claim 1, which comprises: a mounting seat (6), a mounting frame (7) is vertically arranged on the mounting seat (6), a supporting plate (9) is arranged on the outer side of the mounting frame (7), a pneumatic cylinder (8) is arranged on the bottom side of the supporting plate (9), and a movable plate (13) is arranged on the top end of the acting rod of the pneumatic cylinder (8); a sliding hole (11) is arranged in the vertical side wall of the mounting frame (7), and a fixed plate (20) is slidably arranged in the sliding hole (11); a fixed cylinder (14) is arranged on the bottom side of the fixed plate (20), a through hole is arranged in the bottom of the fixed cylinder (14), a gas needle (19) is fixed to the inner wall of the top of the fixed cylinder (14), and the gas needle (19) penetrates the through hole in the bottom of the fixed cylinder (14); a movable tube (21) is fixed to one end of the movable plate (13), the movable tube (21) is sleeved on the outside of the gas needle (19), the movable tube (21) is located in the through hole in the bottom of the fixed cylinder (14), a second gas hole (23) is arranged on the top of the movable tube (21), a first gas hole (10) is arranged on the top end of the gas needle (19), and the first gas hole (10) and the second gas hole (23) are arranged in a staggered mode; a pressing ring (12) is sleeved on the top of the movable tube (21), and a spring (18) is arranged between the pressing ring (12) and the bottom side wall of the fixed cylinder (14).

7. A device for purging a micro gas reservoir according to claim 6, characterized in that: An annular groove is arranged on the bottom side of the pressing ring (12), and an indicating lamp (22) is arranged in the annular groove.

8. A device for purging a micro gas reservoir according to claim 7, characterized in that: The top side of the mounting frame (7) is provided with an air pump (15), and the air inlet of the air pump (15) is connected with a standard air tank.

9. A device for purging a micro gas reservoir according to claim 8, characterized in that: A fixed tube (16) is arranged on one side of the top of the mounting frame (7), one end of the inside of the fixed tube (16) is inserted with a movable plug rod (24), one end of the movable plug rod (24) is provided with an electric heating wire (27), and the electric heating wire (27) is provided with a cutout, the electric heating wire (27) is internally fitted with a liquid groove (26), the side surface of the fixed tube (16) is provided with a screw hole, the screw hole is fitted with a locking screw (28), and the end surface of the locking screw (28) is in action with the outer surface of the movable plug rod (24), the other end of the movable plug rod (24) is fitted with a heating switch (25), and the heating switch (25) is used for starting and stopping control of the liquid groove (26).

10. A device for purging a micro gas reservoir according to claim 9, characterized in that: The other end cavity of the fixed tube (16) is communicated with the electric heating wire (27), the air outlet of the air pump (15) is communicated with the cavity at the other end of the fixed tube (16), and the cavity at the other end of the fixed tube (16) is communicated with the fixed cylinder (14) through the connecting pipe (17).

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