Automatic gas cylinder replacing device for laboratory detection

Abstract

The utility model relates to the technical field of laboratory gas replacement, in particular to an automatic gas cylinder replacement device for laboratory detection, which comprises a first gas cylinder transportation device, a first gas cylinder, a three-way valve and a control module, the first gas cylinder transportation device is provided with the first gas cylinder, a first inlet of the three-way valve is fixedly communicated with a first gas inlet pipeline, and a second inlet of the three-way valve is fixedly communicated with a second gas inlet pipeline; an outlet of the three-way valve fixedly communicates with a gas inlet main pipe, the inlet end of the first gas inlet pipeline is connected with a gas outlet of the gas cylinder through a first quick connector, and a first parking position detection module is arranged on the first gas cylinder conveying device. The gas cylinder conveying device is reasonable and compact in structure and convenient to use, the automatic and rapid replacement process of the detection gas cylinder for the laboratory is achieved through the arranged first gas cylinder conveying device and related corollary equipment, the problem that time and labor are wasted during manual carrying of an existing gas cylinder for detection of the laboratory is effectively solved, and the gas cylinder conveying device has the advantages of being labor-saving and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory gas replacement, and is an automatic replacement device for gas cylinders used for laboratory testing. Background Art

[0002] Gas cylinders usually refer to special pressure vessels that contain gases with a nominal working pressure greater than or equal to 0.2MPa (gauge pressure) and a product of pressure and volume greater than or equal to 1.0MPa, liquefied gases and liquids with a standard boiling point equal to or lower than 60°C. They are mobile special equipment and usually have dangers such as high pressure, toxicity, corrosion, low temperature, flammability, and explosiveness, and there are risk factors such as fire and explosion.

[0003] Commonly used gases in laboratories include high-purity gases used in precision analytical instruments, experimental gases used in chemical reactions (such as chlorine), coal gas and compressed gases used in auxiliary experiments, etc. High-purity gases used in precision instruments such as gas chromatography, gas chromatograph-mass spectrometer, atomic absorption, ICP, etc. include nitrogen, argon, helium, acetylene, hydrogen, oxygen, etc.

[0004] As the number of experimental instruments continues to increase, the replacement of gas cylinders has become a major problem. A 50L gas cylinder with gas can weigh tens or even hundreds of kilograms. At present, when the gas in the laboratory cylinder is used up, the new cylinder is manually transported and replaced manually, which is time-consuming, labor-intensive and poses a huge safety hazard. Summary of the invention

[0005] The utility model provides an automatic replacement device for laboratory testing gas cylinders, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem of time-consuming and labor-intensive manual transportation of existing laboratory testing gas cylinders.

[0006] The technical scheme of the utility model is achieved through the following measures: an automatic replacement device for gas cylinders for laboratory testing comprises a first gas cylinder transportation device, a gas cylinder 1, a three-way valve and a control module, the first gas cylinder transportation device is provided with a gas cylinder 1, a first inlet of the three-way valve is fixedly connected with a first air intake pipeline, an outlet of the three-way valve is fixedly connected with an air intake main pipe, an inlet end of the first air intake pipeline is connected with an air outlet of the gas cylinder 1 through a first quick connector, a first parking position detection module is provided on the first gas cylinder transportation device, a second parking position detection module which can sense the first parking position detection module is provided in an area below the inlet end of the first air intake pipeline, the first parking position detection module is connected with the control module, and the control module is connected with the first gas cylinder transportation device.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] The above also includes a second gas cylinder transportation device and gas cylinder 2. Gas cylinder 2 is provided on the second gas cylinder transportation device. The second inlet of the three-way valve is fixedly connected with a second air intake pipeline. The inlet end of the second air intake pipeline is connected to the gas outlet of gas cylinder 2 through a second quick connector. The second gas cylinder transportation device is provided with a third parking position detection module. A fourth parking position detection module that is mutually inductive with the third parking position detection module is provided below the inlet end of the second air intake pipeline. The third parking position detection module is connected to the control module, and the control module is connected to the second gas cylinder transportation device.

[0009] The first parking position detection module and the second parking position detection module are a group of proximity switches or opposing infrared sensors, and the third parking position detection module and the fourth parking position detection module are a group of proximity switches or opposing infrared sensors.

[0010] The above-mentioned first gas cylinder transport device and second gas cylinder transport device both include a carrying platform, a lifting platform, walking wheels, a driving device, a fixed frame and a gas cylinder clamp. Walking wheels are provided on the lower side of the carrying platform, and a driving device capable of driving the walking wheels to rotate is provided on the carrying platform. A fixed frame is fixedly installed on the left side of the carrying platform, and a handlebar is provided on the upper end of the fixed frame. Gas cylinder clamps are provided at intervals at the upper and lower ends of the right side of the fixed frame. The gas cylinder clamps are semicircular in shape. A lifting platform is provided on the carrying platform below the gas cylinder clamp, and a control module is respectively connected to the driving device and the lifting platform.

[0011] The above also includes a gas leakage alarm device, which is respectively arranged above the gas cylinder one and the gas cylinder two.

[0012] The above also includes a gas recovery device, a first pressure reducing valve and a second pressure reducing valve are fixedly installed on the first air intake pipeline and the second air intake pipeline respectively, a regulating valve is fixedly installed on the air intake main pipe, and an exhaust pipeline is fixedly connected between the regulating valve and the inlet of the gas recovery device. During use, the pressure of the first air intake pipeline is adjusted by the pressure reducing valve according to the needs of the detection instrument.

[0013] A first solenoid valve is fixedly installed on the first air intake pipeline between the first pressure reducing valve and the three-way valve, and a second solenoid valve is fixedly installed on the second air intake pipeline between the second pressure reducing valve and the three-way valve. A first pressure detector and a second pressure detector are respectively provided on gas cylinder one and gas cylinder two. The first pressure detector is interlocked with the first solenoid valve, and the second pressure detector is interlocked with the second solenoid valve.

[0014] The above-mentioned first gas cylinder transport device and the second gas cylinder transport device also include a magnetic base, an anti-dumping block and a brake device. A magnetic base is provided on the upper side of the lifting platform, an anti-dumping block is provided on the fixed frame, and a brake device is provided on the walking wheel.

[0015] The utility model has a reasonable and compact structure and is easy to use. Through the provision of the first gas cylinder transportation device and related supporting equipment, it realizes the automatic and rapid replacement process of laboratory test gas cylinders, effectively solves the problem of time-consuming and labor-intensive manual transportation of existing laboratory test gas cylinders, and has the characteristics of labor-saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0017] Attached Figure 2 This is a schematic diagram of the main structure of the first gas cylinder transport device.

[0018] Attached Figure 3 For attachment Figure 1 Circuit block diagram of .

[0019] Attached Figure 1 The codes are as follows: 1 for gas cylinder one, 2 for three-way valve, 3 for the first air intake pipeline, 4 for the main air intake pipe, 5 for the first quick connector, 6 for gas cylinder two, 7 for the second air intake pipeline, 8 for the second quick connector, 9 for the load-bearing platform, 10 for the lifting platform, 11 for the walking wheel, 12 for the driving device, 13 for the fixing frame, 14 for the gas cylinder clamp, 15 for the gas leakage alarm device, 16 for the first pressure reducing valve, 17 for the second pressure reducing valve, 18 for the regulating valve, 19 for the exhaust pipeline, 20 for the gas recovery device, 21 for the first solenoid valve, 22 for the second solenoid valve, 23 for the first pressure detector, 24 for the second pressure detector, 25 for the magnetic base, 26 for the anti-dumping block, and 27 for the handlebar. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0021] In the present invention, unless otherwise specified, the devices and apparatuses used are all known and commonly used devices and apparatuses in the art, such as proximity switches or infrared sensors.

[0022] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0023] The present invention is further described below in conjunction with the embodiments and drawings:

[0024] Embodiment 1: As attached Figure 1 , 2As shown in Figure 3, the automatic replacement device for laboratory testing gas cylinders includes a first gas cylinder transport device, a gas cylinder 1, a three-way valve 2 and a control module. The first gas cylinder transport device is provided with a gas cylinder 1, the first inlet of the three-way valve 2 is fixedly connected to the first air intake pipeline 3, the outlet of the three-way valve 2 is fixedly connected to the air intake main pipe 4, the inlet end of the first air intake pipeline 3 is connected to the air outlet of the gas cylinder 1 through a first quick connector 5, the first gas cylinder transport device is provided with a first parking position detection module, and the lower area of ​​the inlet end of the first air intake pipeline 3 is provided with a second parking position detection module that can sense the first parking position detection module, the first parking position detection module is connected to the control module, and the control module is connected to the first gas cylinder transport device. During use, the utility model realizes the automatic and rapid replacement process of laboratory testing gas cylinders through the first gas cylinder transport device and related supporting equipment, effectively solving the problem of time-consuming and labor-intensive manual handling of existing laboratory testing gas cylinders.

[0025] The above-mentioned automatic replacement device for laboratory testing gas cylinders can be further optimized and / or improved according to actual needs:

[0026] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 , 2 As shown in 3, it also includes a second gas cylinder transport device and a gas cylinder 2 6. The second gas cylinder transport device is provided with a gas cylinder 2 6. The second inlet of the three-way valve 2 is fixedly connected with a second air intake pipeline 7. The inlet end of the second air intake pipeline 7 is connected to the gas outlet of the gas cylinder 2 6 through a second quick connector 8. The second gas cylinder transport device is provided with a third parking position detection module. A fourth parking position detection module that is mutually inductive with the third parking position detection module is provided below the inlet end of the second air intake pipeline 7. The third parking position detection module is connected to the control module, and the control module is connected to the second gas cylinder transport device. During use, the gas cylinder 1, the first gas cylinder transport device and the first air intake pipeline 3 are in use, and the gas cylinder 2 6 and the second gas cylinder transport device are in standby state. According to the gas supply needs of the laboratory, replacement is more efficient and quick.

[0027] Embodiment 3: It differs from Embodiment 2 in that: as required, the first parking position detection module and the second parking position detection module are a group of proximity switches or opposing infrared sensors, and the third parking position detection module and the fourth parking position detection module are a group of proximity switches or opposing infrared sensors.

[0028] Embodiment 4: It differs from Embodiment 2 to Embodiment 3 in that: Figure 2As shown, the first gas cylinder transport device and the second gas cylinder transport device both include a bearing platform 9, a lifting platform 10, a running wheel 11, a driving device 12, a fixing frame 13 and a gas cylinder clamp 14. The bearing platform 9 is provided with a running wheel 11 at the lower side, and the bearing platform 9 is provided with a driving device 12 capable of driving the running wheel 11 to rotate. The left side of the bearing platform 9 is fixedly installed with a fixing frame 13, and the upper end of the fixing frame 13 is provided with a handlebar 27. The right side of the fixing frame 13 is provided with a gas cylinder clamp 14 at intervals at the upper and lower sides. The gas cylinder clamp 14 is in a semicircular arc shape. The lifting platform 10 is provided on the bearing platform 9 below the gas cylinder clamp 14, and the control module is connected to the driving device 12 and the lifting platform 10 respectively. During use, the running wheel 11 and the handlebar 27 are provided to facilitate the movement of the gas cylinder; the gas cylinder clamp 14 is provided to facilitate the fixing of the gas cylinder placed on the lifting platform 10 and the fixing frame 13 together; the lifting platform 10 provided is an existing well-known hydraulic lifting platform 10, and the lifting platform 10 facilitates the lifting of the gas cylinder to the desired position.

[0029] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 1 , 3 As shown, it also includes a gas leakage alarm device 15, which is respectively arranged above the gas cylinder 1 and the gas cylinder 2 6. During use, the gas leakage situation can be effectively monitored. The gas leakage alarm device 15 adopts an electrochemical sensor with a sensitivity of 0.01ppm.

[0030] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 1 As shown, a gas recovery device 20 is also included. A first pressure reducing valve 16 and a second pressure reducing valve 17 are fixedly installed on the first air intake pipeline 3 and the second air intake pipeline 7, respectively. A regulating valve 18 is fixedly installed on the air intake main pipe 4. An exhaust pipeline 19 is fixedly connected between the regulating valve 18 and the inlet of the gas recovery device 20. During use, according to the needs of the detection instrument, the pressure of the first air intake pipeline 3 is adjusted by the pressure reducing valve; through the exhaust pipeline 19, the initial or unsatisfactory gas is sent to the gas recovery device 20 through the air intake main pipe 4 and the exhaust pipeline 19 for recovery and treatment. According to the needs, the gas recovery device 20 is specifically a gas recovery tank.

[0031] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 1As shown, a first solenoid valve 21 is fixedly installed on the first air intake pipeline 3 between the first pressure reducing valve 16 and the three-way valve 2, a second solenoid valve 22 is fixedly installed on the second air intake pipeline 7 between the second pressure reducing valve 17 and the three-way valve 2, and a first pressure detector 23 and a second pressure detector 24 are respectively provided on the gas cylinder 1 and the gas cylinder 2 6. The first pressure detector 23 is interlocked with the first solenoid valve 21, and the second pressure detector 24 is interlocked with the second solenoid valve 22. During use, when the first pressure detector 23 detects that the pressure of the gas cylinder 1 drops to a set value, the interlocking control controls the first solenoid valve 21 to close, indicating that the gas storage capacity in the gas cylinder 1 is insufficient and needs to be replaced in time.

[0032] Embodiment 8: It differs from Embodiments 1 to 7 in that: Figure 2 As shown, the first gas cylinder transport device and the second gas cylinder transport device both further include a magnetic base 25, an anti-dumping block 26 and a brake device. The upper side of the lifting platform 10 is provided with a magnetic base 25, the fixing frame 13 is provided with an anti-dumping block 26, and the running wheel 11 is provided with a brake device. During use, the additional anti-dumping block 26 is used to prevent the gas cylinder from overturning due to overweight and to prevent the gas cylinder transport device from tipping over during the transportation and state adjustment of the gas cylinder; the magnetic base 25 can be a permanent magnet disk, which can be used together with the gas cylinder clamp 14 to firmly fix the gas cylinder on the gas cylinder transport device; the drive device 12 is an existing well-known drive motor.

[0033] According to the needs, the pipelines and equipment of the automatic replacement device for laboratory testing gas cylinders can also be equipped with conventional valves, thermometers and pressure gauges known in the art according to production needs. The control module is a host computer or a control chip; the first quick connector 5 and the second quick connector 8 are both SF6 gas self-sealing quick connectors.

[0034] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0035] The use process of the embodiment of the utility model:

[0036] First, place the gas cylinder 1 (a gas cylinder for laboratory testing) in the first gas cylinder transport device, and control the driving motor on the first gas cylinder transport device through the control module, so that the first gas cylinder transport device moves with the gas cylinder 1 to the first air intake pipeline 3. When the first parking position detection module and the second parking position detection module sense each other, the first parking position detection module sends a signal to the control module to control the first gas cylinder transport device to stop running, that is, the first gas cylinder transport device stops below the inlet end of the first air intake pipeline 3;

[0037] Next, the lifting platform 10 on the first gas cylinder transport device is controlled by the control module, so that the lifting platform 10 is lifted up with the gas cylinder 1, and when the ejector pin in the first quick connector 5 hits the gas outlet of the gas cylinder 1, quick connection is achieved, so that the gas cylinder 1 is connected with the first air inlet pipeline 3; the gas is supplied by the gas cylinder 1, and the gas is decompressed by the first pressure reducing valve 16 on the first air inlet pipeline 3, and the initial gas that does not meet the requirements is sent to the gas recovery device 20 for recovery through the exhaust pipeline 19, and the qualified gas is sent to the laboratory gas instrument through the air inlet main pipe 4 for use;

[0038] Finally, when the first pressure detector 23 detects that the pressure in gas cylinder 1 drops to the set value, the interlock control first solenoid valve 21 is closed, the gas supply is stopped, and the need to replace gas cylinder 1 is prompted. After the used gas cylinder 1 is disassembled, it can be transported to the empty bottle storage area through the first gas cylinder transportation device; at the same time, according to the needs of the laboratory, the spare second gas cylinder transportation device with gas cylinder 2 6 is started to move to the second air inlet pipeline 7, and the above operation is repeated, so that gas cylinder 2 6 and the second air inlet pipeline 7 are quickly connected to ensure the normal operation of the laboratory gas instruments.

Claims

1. An automatic replacement device for gas cylinders for laboratory testing, characterized in that The invention comprises a first gas cylinder transport device, a gas cylinder one, a three-way valve and a control module. The first gas cylinder transport device is provided with a gas cylinder one. The first inlet of the three-way valve is fixedly connected with a first air intake pipeline. The outlet of the three-way valve is fixedly connected with an air intake main pipe. The inlet end of the first air intake pipeline is connected with the air outlet of the gas cylinder one by a first quick connector. The first gas cylinder transport device is provided with a first parking position detection module. A second parking position detection module which can sense the first parking position detection module is provided in the area below the inlet end of the first air intake pipeline. The first parking position detection module is connected with the control module, and the control module is connected with the first gas cylinder transport device.

2. The automatic replacement device for laboratory testing gas cylinders according to claim 1 is characterized in that It also includes a second gas cylinder transportation device and gas cylinder 2. Gas cylinder 2 is arranged on the second gas cylinder transportation device. The second inlet of the three-way valve is fixedly connected with a second air intake pipeline. The inlet end of the second air intake pipeline is connected to the gas outlet of gas cylinder 2 through a second quick connector. The second gas cylinder transportation device is provided with a third parking position detection module. A fourth parking position detection module which is mutually inductive with the third parking position detection module is arranged below the inlet end of the second air intake pipeline. The third parking position detection module is connected to the control module, and the control module is connected to the second gas cylinder transportation device.

3. The automatic replacement device for laboratory testing gas cylinders according to claim 2 is characterized in that The first parking position detection module and the second parking position detection module are a group of proximity switches or opposing infrared sensors, and the third parking position detection module and the fourth parking position detection module are a group of proximity switches or opposing infrared sensors.

4. The automatic replacement device for laboratory testing gas cylinders according to claim 2 or 3, characterized in that The first gas cylinder transport device and the second gas cylinder transport device both include a carrying platform, a lifting platform, running wheels, a driving device, a fixed frame and a gas cylinder clamp. Running wheels are provided on the lower side of the carrying platform, and a driving device capable of driving the running wheels to rotate is provided on the carrying platform. A fixed frame is fixedly installed on the left side of the carrying platform, and a handlebar is provided on the upper end of the fixed frame. Gas cylinder clamps are provided at intervals at the upper and lower ends of the right side of the fixed frame, and the gas cylinder clamps are semicircular. A lifting platform is provided on the carrying platform below the gas cylinder clamp, and a control module is respectively connected to the driving device and the lifting platform.

5. The automatic replacement device for laboratory testing gas cylinders according to claim 2 or 3, characterized in that It also includes a gas leakage alarm device, which is respectively arranged above gas cylinder one and gas cylinder two; it also includes a gas recovery device, on which a first pressure reducing valve and a second pressure reducing valve are respectively fixedly installed on the first air intake pipeline and the second air intake pipeline, a regulating valve is fixedly installed on the air intake main pipe, and an exhaust pipeline is fixedly connected between the regulating valve and the inlet of the gas recovery device.

6. The automatic replacement device for laboratory testing gas cylinders according to claim 4 is characterized in that It also includes a gas leakage alarm device, which is respectively arranged above gas cylinder one and gas cylinder two; it also includes a gas recovery device, on which a first pressure reducing valve and a second pressure reducing valve are respectively fixedly installed on the first air intake pipeline and the second air intake pipeline, a regulating valve is fixedly installed on the air intake main pipe, and an exhaust pipeline is fixedly connected between the regulating valve and the inlet of the gas recovery device.

7. The automatic replacement device for laboratory testing gas cylinders according to claim 2, 3 or 6, characterized in that A first solenoid valve is fixedly installed on the first air intake pipeline between the first pressure reducing valve and the three-way valve, and a second solenoid valve is fixedly installed on the second air intake pipeline between the second pressure reducing valve and the three-way valve. A first pressure detector and a second pressure detector are respectively provided on gas cylinder one and gas cylinder two. The first pressure detector is interlocked with the first solenoid valve, and the second pressure detector is interlocked with the second solenoid valve.

8. The automatic replacement device for laboratory testing gas cylinders according to claim 4 is characterized in that A first solenoid valve is fixedly installed on the first air intake pipeline between the first pressure reducing valve and the three-way valve, and a second solenoid valve is fixedly installed on the second air intake pipeline between the second pressure reducing valve and the three-way valve. A first pressure detector and a second pressure detector are respectively provided on gas cylinder one and gas cylinder two. The first pressure detector is interlocked with the first solenoid valve, and the second pressure detector is interlocked with the second solenoid valve.

9. The automatic replacement device for laboratory testing gas cylinders according to claim 5, characterized in that A first solenoid valve is fixedly installed on the first air intake pipeline between the first pressure reducing valve and the three-way valve, and a second solenoid valve is fixedly installed on the second air intake pipeline between the second pressure reducing valve and the three-way valve. A first pressure detector and a second pressure detector are respectively provided on gas cylinder one and gas cylinder two. The first pressure detector is interlocked with the first solenoid valve, and the second pressure detector is interlocked with the second solenoid valve.

10. The automatic replacement device for laboratory testing gas cylinders according to claim 2 or 3 or 6 or 8 or 9, characterized in that The first gas cylinder transport device and the second gas cylinder transport device also include a magnetic base, an anti-dumping block and a brake device. A magnetic base is provided on the upper side of the lifting platform, an anti-dumping block is provided on the fixing frame, and a brake device is provided on the walking wheel.

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