Chromatograph steel cylinder leak-proof sample injection box and detection method

Abstract

The invention discloses a chromatographic instrument steel cylinder leakproof sample injection box and a detection method, the chromatographic instrument steel cylinder leakproof sample injection box comprises a box body, one end of the box body is arranged on the ground, and the other end of the box body is provided with a vacuum suction device; the side surface of the box body is rotationally connected with a cabinet door; a plurality of operation gloves are connected to the side face of the box body at intervals, and the operation ends of the operation gloves extend into the box body; the oscillation assembly is arranged in the box body, the output end of the oscillation assembly is connected with a placing table, the placing table is provided with a steel cylinder, and the oscillation assembly is configured to oscillate the steel cylinder; and the heating assembly is arranged at the bottom of the placing table, and the heating assembly is configured to heat the steel cylinder. The problems of leakage risk, non-uniform sample gasification, analysis result deviation and the like caused by direct contact of an operator with a steel cylinder in the prior art are solved. The sample is prevented from leaking into the environment, and the pollution risk is reduced. And the uniform gas-liquid balance of the sample is ensured to be quickly achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chromatographic analysis, and in particular to a chromatograph steel cylinder anti-leakage sample injection box and a detection method. BACKGROUND

[0002] In gas chromatographic analysis, high-pressure cylinder replacement and pipeline connection are key sample pretreatment links, However, the existing operation mode has significant technical shortcomings and safety hazards. On the one hand, the operator needs to be directly exposed to the cylinder interface, and if the gas to be measured is toxic or flammable and explosive, a small operation error may cause leakage, directly endangering the safety of personnel and the laboratory environment. On the other hand, for non-pure gaseous samples containing liquefied volatile organic compounds (VOCs), their natural gasification at normal temperature and pressure is often insufficient and uneven, resulting in distortion of the sample entering the chromatograph and difficulty in guaranteeing the accuracy and reliability of the analysis results.

[0003] Therefore, there is an urgent need for a sample injection box that can effectively prevent leakage, protect the safety of operators, be easy to operate, and improve detection accuracy. SUMMARY

[0004] The present application provides a chromatograph steel cylinder anti-leakage sample injection box and a detection method, which solves the problems of leakage risk caused by direct contact of the operator with the cylinder, uneven sample gasification, and analysis result deviation in the prior art.

[0005] In a first aspect, the present application provides a chromatograph steel cylinder anti-leakage sample injection box, comprising a box body, one end of the box body is arranged on the ground, and the other end of the box body is provided with a vacuum suction device; a cabinet door is rotatably connected to the side of the box body; a plurality of operation gloves are connected to the side of the box body at intervals, and the operation ends of the plurality of operation gloves are inserted into the box body; an oscillation assembly is arranged in the box body, and an output end of the oscillation assembly is connected with a placement table, the placement table is provided with a steel cylinder, and the oscillation assembly is configured to oscillate the steel cylinder; and a heating assembly is arranged at the bottom of the placement table, and the heating assembly is configured to heat the steel cylinder.

[0006] With reference to the first aspect, in a possible implementation manner, the heating assembly comprises a shell, a cover plate, an electric heating wire, a first fan and a second fan; two air inlets are formed in the shell, one of the air inlets is provided with the first fan, and the other air inlet is provided with the second fan; one end of the shell is connected to the box body, and the other end of the shell is connected with the cover plate; the electric heating wire is arranged between the air inlets and the cover plate; the first fan and the second fan draw air into the shell, the air is heated by the electric heating wire, and the heated air can be delivered to the placement table by the first fan and the second fan and heat the steel cylinder.

[0007] With reference to the first aspect, in a possible implementation manner, the oscillation assembly comprises a power member, a transmission member and a crank linkage mechanism; a fixed end of the power member is connected to the cover plate, and an output end of the power member is connected to one end of the transmission member; the other end of the transmission member is connected to one end of the crank linkage mechanism, and the other end of the crank linkage mechanism is slidably abutted with the placement table.

[0008] With reference to the first aspect, in a possible implementation manner, the crank linkage mechanism comprises a rotating disc, a first connecting rod, a second connecting rod and a first support; the transmission member comprises a first gear and a second gear; the output end of the power member is connected to the first gear, and the second gear is rotationally connected to the rotating disc through a rotating shaft; the first gear and the second gear are engaged; the rotating disc is sleeved on the rotating shaft; the rotating disc is provided with a sliding rail; the first support is connected to the cover plate; one end of the first connecting rod is slidably connected to the sliding rail through a connecting column, the other end of the first connecting rod is rotationally connected to one end of the second connecting rod, the second connecting rod passes through the first support, and the other end of the second connecting rod is slidably abutted with the placement table; the second connecting rod can make linear reciprocating motion, so as to drive the placement table to vibrate.

[0009] With reference to the first aspect, in a possible implementation manner, the oscillation assembly further comprises a second support, a connecting rod and an elastic member; the second support is symmetrically arranged with the first support with respect to the placement table; the connecting rod passes through the second support, and one end of the connecting rod is slidably connected to the placement table; the elastic member is sleeved on the outer side of the connecting rod, one end of the elastic member is abutted with the end face of the placement table, and the other end of the elastic member is abutted with the end face of the second support.

[0010] With reference to the first aspect, in a possible implementation manner, the oscillation assembly further comprises a sliding block; the placing table is provided with a first mounting hole and a second mounting hole on two sides thereof respectively; one end of the second connecting rod, which is away from the first connecting rod, is arranged in the first mounting hole; the placing table is provided with a groove on a side thereof which is close to the first mounting hole, and the groove is communicated with the first mounting hole; the second connecting rod is provided with a sliding groove on an end thereof which is close to the placing table; one end of the sliding block is arranged in the groove and connected with the placing table, and the other end of the sliding block is arranged in the sliding groove and configured to slide in the sliding groove; when the steel cylinder in the placing table is oscillated, the second connecting rod moves towards the second support, and the sliding block and the sliding groove can drive the placing table to deflect in one direction; when the second connecting rod abuts against the placing table, the second connecting rod drives the placing table to move towards the second support, at this time, the elastic member is in a compressed state; when the second connecting rod moves away from the second support, the elastic member releases elastic force to drive the placing table to move towards the first support; when the second connecting rod continues to move away from the second support, the sliding block and the sliding groove can drive the placing table to deflect in another direction opposite to the first direction, so as to complete one oscillation.

[0011] With reference to the first aspect, in a possible implementation manner, the placing table is provided with a plurality of grooves, and the plurality of grooves are arranged with the steel cylinders; the placing table is further provided with a plurality of ventilation holes, and the ventilation holes can communicate the electric heating wire and the grooves.

[0012] With reference to the first aspect, in a possible implementation manner, the vacuum suction device comprises an air suction pipeline, an exhaust fan and an exhaust pipeline; the cabinet is connected with the air suction pipeline and the exhaust pipeline respectively; the air suction pipeline and the exhaust pipeline are both provided with the exhaust fan.

[0013] In the second aspect, the present application provides a chromatograph detection method, which uses the chromatograph steel cylinder leakage-proof sample feeding box of the first aspect or any of the implementation manners of the first aspect, and comprises the following steps: S1: a plurality of steel cylinders containing samples are placed in a plurality of grooves of the placing table, and the cabinet door is closed to make the cabinet in a sealed state; S2: the vacuum suction device is started, and the cabinet is formed with a negative pressure through the air suction pipeline and the exhaust fan, so as to prevent and control leakage of harmful gas; S3: the heating assembly is started, the first fan and the second fan are controlled to suck air into the shell, the hot air is heated through the electric heating wire, the steel cylinders are uniformly heated through the ventilation holes, and the heating temperature is adjusted to a preset value; S4: start the oscillation assembly, the power member drives the crank connecting rod mechanism to run through the transmission member, so that the placement table generates vibration and angular deflection, multi-dimensional oscillation is carried out on the steel bottle, sample mixing is promoted to be uniform, and after completion, the heating assembly and the oscillation assembly are closed; S5: reliably connect the outlet of the steel bottle with the sample inlet quick connector, and sample detection is carried out through the chromatograph; S6: after detection is completed, the vacuum suction device is closed, and after the pressure in the cabinet returns to normal, the cabinet door is opened to take out the steel bottle.

[0014] With reference to the second aspect, in a possible implementation manner, the step S4 comprises: S41: start the power member, the output end of the power member drives the transmission member to run, so that the rotating disc rotates around the rotating shaft; S42: the rotating motion of the rotating disc is converted into the linear reciprocating motion of the second connecting rod through the crank connecting rod mechanism; when the second connecting rod moves towards the second support, the placement table is driven to generate angular deflection in the first direction through the cooperation of the sliding block and the sliding groove on the second connecting rod; S43: after the second connecting rod and the placement table abut, the placement table is pushed to move towards the second support as a whole, and the elastic member is compressed to store elastic potential energy; when the second connecting rod moves away from the second support, the elastic member releases the elastic potential energy to push the placement table to move back towards the first support as a whole; S44: in the process of moving back of the placement table, the placement table is driven to generate angular deflection in the second direction opposite to the first direction through the cooperation of the sliding block and the sliding groove, so as to complete one oscillation cycle; S45: repeat the oscillation cycle, so that the steel bottle realizes multi-dimensional oscillation under the combined action of angular deflection and linear reciprocating motion.

[0015] The one or more technical solutions provided in the application have at least the following technical effects: The closed box body isolates the operator from the steel bottle, which can effectively prevent the leakage of toxic, flammable, explosive or irritating gas, thereby protecting the safety of the operator. Further, the vacuum suction device forms negative pressure in the box body, so that even if leakage occurs, external air enters the box body, avoiding sample leakage to the environment and reducing the pollution risk.

[0016] The heat air and the shaking greatly increase the mass transfer and heat transfer rate, so that the sample in the steel bottle quickly reaches the gas-liquid equilibrium and the concentration is uniform, the waiting time before analysis is shortened, and the detection precision is improved. Specifically, when the steel bottle placed on the placement table is shaken, the second connecting rod moves towards the second support, and the sliding block and the sliding groove can drive the placement table to deflect in one direction; when the second connecting rod abuts against the placement table, the second connecting rod drives the placement table to move towards the second support, at this time, the elastic member is in a compressed state; when the second connecting rod moves away from the second support, the elastic member releases the elastic force to drive the placement table to move towards the first support; when the second connecting rod continues to move away from the second support, the sliding block and the sliding groove can drive the placement table to deflect in the other direction, so as to complete one shaking.

[0017] The application converts the rotating motion of the motor into a unique multi-dimensional composite motion of the placement table. The motion is not a simple vibration, but an organic combination of angular deflection and linear reciprocation. Specifically, under the cooperation of the specific trajectory of the sliding block and the connecting rod sliding groove and the energy storage and release of the elastic element, the placement table periodically completes the shaking cycle of tilting, translation, tilting back and resetting with the steel bottle. The angular deflection causes the liquid surface in the bottle to shake violently, significantly increasing the gas-liquid contact area; the linear impact imparts strong inertia to the liquid, effectively destroying the thermal boundary layer and achieving forced convective heat transfer throughout the bottle. Finally, under the cooperation of the bottom heat air, the sample quickly reaches a uniform gas-liquid equilibrium, the waiting time is shortened, and the authenticity of the sample concentration is ensured.

[0018] The operation gloves and the transparent window enable the operator to replace and connect the steel bottle without opening the box, the sample inlet quick connector simplifies the pipeline connection, and the work efficiency is improved. The transparent window and the illuminating lamp provide a clear observation field of view, facilitating monitoring the operation process and checking the leakage. The application is suitable for various scenes requiring safe replacement or connection of the steel bottle of the chromatograph, and is especially suitable for handling dangerous or volatile samples. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the application. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 A schematic view of a chromatograph steel bottle leak-proof sampling box provided by the embodiments of the application; Figure 2 An isometric view of the shaking assembly and the heating assembly provided by the embodiments of the application; Figure 3A-A sectional view of the oscillation assembly and the heating assembly provided by the embodiment of the present application; Figure 4 A-A sectional view of the oscillation assembly and the heating assembly provided by the embodiment of the present application; Figure 3 Figure 5 Axonometric view of the second connecting rod provided by the embodiment of the present application; Figure 6 Axonometric view of the placement table provided by the embodiment of the present application; Figure 7 Axonometric view of the placement table provided by the embodiment of the present application; Figure 8 A-A sectional view of the oscillation assembly and the heating assembly provided by the embodiment of the present application; Figure 7 Figure 9 Figure 8 Figure 10 Flow chart of a chromatograph detection method provided by the embodiment of the present application; Figure 11 Flow chart of the working method of the oscillation assembly provided by the embodiment of the present application.

[0021] Icon: 1 - box; 2 - cabinet door; 3 - operating gloves; 4 - oscillation assembly; 41 - placement table; 411 - first mounting hole; 412 - second mounting hole; 413 - groove; 414 - slot hole; 415 - air hole; 42 - power part; 43 - transmission part; 431 - first gear; 432 - second gear; 433 - rotating shaft; 44 - crank connecting rod mechanism; 441 - rotating disc; 4411 - sliding rail; 442 - first connecting rod; 443 - second connecting rod; 4431 - sliding groove; 444 - first support; 45 - second support; 46 - connecting rod; 5 - heating assembly; 51 - shell; 511 - air inlet; 52 - cover plate; 53 - electric heating wire; 6 - air extraction pipeline; 7 - exhaust fan; 8 - air exhaust pipeline; 9 - quick connector; 10 - illuminating lamp; 11 - transparent window. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] ​​​​In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0024] This invention provides a leak-proof injection box for chromatograph cylinders, such as... Figures 1-9 As shown, the device includes a housing 1, one end of which is placed on the ground, and a vacuum suction device at the other end; a cabinet door 2, which is rotatably connected to the side of the housing 1; operating gloves 3, which are spaced apart on the side of the housing 1, with the operating ends of the gloves extending into the housing 1; an oscillation assembly 4, which is located inside the housing 1, with its output end connected to a placement platform 41, on which a gas cylinder is placed, and which is configured to oscillate the gas cylinder; and a heating assembly 5, which is located at the bottom of the placement platform 41 and is configured to heat the gas cylinder.

[0025] For example, the housing 1 is welded from stainless steel, and the inner wall is polished to reduce gas adsorption; the bottom of the housing 1 is equipped with anti-vibration leveling feet. A cabinet door 2 is rotatably connected to the side of the housing 1 via an airtight hinge, and the edge of the cabinet door 2 is equipped with a silicone sealing strip; multiple butyl rubber operating gloves 3 are spaced apart on the side of the housing 1, and the operating gloves 3 are fixed to the housing 1 via flanges. The vibration assembly 4 is installed inside the housing 1 via a shock-absorbing base.

[0026] For example, the heating assembly 5 also includes a sensor disposed on the placement stage 41.

[0027] In the embodiments of this application, such as Figures 1-9As shown in the drawings, the heating assembly 5 comprises a shell 51, a cover plate 52, an electric heating wire 53, a first fan and a second fan; two air inlets 511 are formed in the shell 51, one of the air inlets 511 is provided with the first fan, and the other air inlet 511 is provided with the second fan; one end of the shell 51 is connected to the box body 1, and the other end of the shell 51 is connected with the cover plate 52; the electric heating wire 53 is arranged between the air inlet 511 and the cover plate 52; the first fan and the second fan draw air into the shell 51, the air is heated by the electric heating wire 53, and the heated air can be transported to the placement table 41 by the first fan and the second fan and heat the steel cylinder.

[0028] For example, the shell 51 is made of heat insulation material, and a filter screen is arranged at each of the two air inlets 511. The shell 51 is connected to the box body 1 through a damping base.

[0029] For example, the electric heating wire 53 is made of nickel-chromium alloy material, is arranged between the air inlet 511 and the cover plate 52, and is provided with an overheat protector; the first fan and the second fan draw filtered air into the shell 51, the air is uniformly heated by the electric heating wire 53, and the heated air can be transported to the placement table 41 by the first fan and the second fan and heat the steel cylinder in a circulating manner.

[0030] In the embodiment of the present application, as shown in the drawings, Figures 1-9 The oscillation assembly 4 comprises a power member 42, a transmission member 43 and a crank linkage mechanism 44; the fixed end of the power member 42 is connected to the cover plate 52, and the output end of the power member 42 is connected to one end of the transmission member 43; the other end of the transmission member 43 is connected to one end of the crank linkage mechanism 44, and the other end of the crank linkage mechanism 44 is slidably abutted to the placement table 41.

[0031] For example, the power member 42 is a servo motor.

[0032] In the embodiment of the present application, as shown in the drawings, Figures 1-9 The crank linkage mechanism 44 comprises a rotating disc 441, a first connecting rod 442, a second connecting rod 443 and a first support 444; the transmission member 43 comprises a first gear 431 and a second gear 432; the output end of the power member 42 is connected to the first gear 431, and the second gear 432 is rotationally connected to the rotating disc 441 through a rotating shaft 433; the first gear 431 and the second gear 432 are engaged; the rotating disc 441 is sleeved on the rotating shaft 433; the rotating disc 441 is provided with a sliding rail 4411; the first support 444 is connected to the cover plate 52; one end of the first connecting rod 442 is slidably connected to the sliding rail 4411 through a connecting column, the other end of the first connecting rod 442 is rotationally connected to one end of the second connecting rod 443, the second connecting rod 443 passes through the first support 444, and the other end of the second connecting rod 443 is slidably abutted to the placement table 41; the second connecting rod 443 can make linear reciprocating motion, thereby driving the placement table 41 to oscillate.

[0033] Exemplarily, the crank connecting rod mechanism 44 comprises a rotating disc 441, a first connecting rod 442, a second connecting rod 443 and a first support 444; the transmission member 43 comprises a first gear 431 and a second gear 432; the output end of the power member 42 is connected with the first gear 431 through a key, the second gear 432 is rotationally connected with the rotating disc 441 through a bearing-supported rotating shaft 433; the first gear 431 and the second gear 432 are engaged in the form of helical gears; the rotating disc 441 is sleeved on the rotating shaft 433 through a key connection; the rotating disc 441 is provided with an arc-shaped slide rail 4411; the first support 444 is bolted on the cover plate 52; one end of the first connecting rod 442 is slidably connected in the slide rail 4411 through a ball bearing, the other end of the first connecting rod 442 is rotationally connected with one end of the second connecting rod 443 through a ball hinge, the second connecting rod 443 passes through a guide hole of the first support 444, and the other end of the second connecting rod 443 is slidably abutted with the placement table 41 through a sliding block mechanism; the second connecting rod 443 can do linear reciprocating motion, thereby driving the placement table 41 to generate compound vibration.

[0034] In the embodiment of the present application, as shown in Figures 1-9 The oscillation assembly 4 further comprises a second support 45, a connecting rod 46 and an elastic member; the second support 45 is symmetrically arranged with the first support 444 relative to the placement table 41; the connecting rod 46 passes through the second support 45, and one end of the connecting rod 46 is slidably connected with the placement table 41; the elastic member is sleeved on the outer side of the connecting rod 46, one end of the elastic member is abutted with the end face of the placement table 41, and the other end of the elastic member is abutted with the end face of the second support 45.

[0035] Exemplarily, the elastic member is a stainless steel coil spring.

[0036] In the embodiment of the present application, as shown in Figures 1-9As shown, the oscillation assembly 4 further comprises a sliding block; the two sides of the placement table 41 are respectively provided with a first mounting hole 411 and a second mounting hole 412; the end of the second connecting rod 443 away from the first connecting rod 442 is arranged in the first mounting hole 411; the side of the placement table 41 close to the first mounting hole 411 is provided with a groove 413, and the groove 413 is communicated with the first mounting hole 411; the end of the second connecting rod 443 close to the placement table 41 is provided with a sliding groove 4431; one end of the sliding block is arranged in the groove 413 and connected with the placement table 41, and the other end of the sliding block is arranged in the sliding groove 4431 and configured to slide in the sliding groove 4431; when the steel cylinder in the placement table 41 is oscillated, the second connecting rod 443 moves towards the second support 45, and the sliding block and the sliding groove 4431 can drive the placement table 41 to deflect in one direction; after the second connecting rod 443 abuts against the placement table 41, the second connecting rod 443 drives the placement table 41 to move towards the second support 45, at this time, the elastic member is in a compressed state; when the second connecting rod 443 moves away from the second support 45, the elastic member releases the elastic force to drive the placement table 41 to move towards the first support 444; when the second connecting rod 443 continues to move away from the second support 45, the sliding block and the sliding groove 4431 can drive the placement table 41 to deflect in another opposite direction, thereby completing an oscillation.

[0037] For example, the material of the sliding block is polytetrafluoroethylene, and the side of the placement table 41 close to the first mounting hole 411 is provided with a T-shaped groove 413. One end of the sliding block is arranged in the groove 413 through a locking screw, and the other end of the sliding block is arranged in the sliding groove 4431 through a ball and configured to slide in the sliding groove 4431 with low friction; when the steel cylinder in the placement table 41 is oscillated, the second connecting rod 443 moves towards the second support 45, and the sliding block and the inclined surface of the sliding groove 4431 can drive the placement table 41 to deflect in one direction.

[0038] In the embodiment of the present application, as shown in the drawings, Figures 1-9 The placement table 41 is provided with a plurality of grooves 414, and the plurality of grooves 414 are respectively arranged with steel cylinders; the placement table 41 is further provided with a plurality of ventilation holes 415, and the ventilation holes 415 can communicate the electric heating wire 53 and the grooves 414.

[0039] For example, the placement table 41 is provided with a plurality of grooves 414 with elastic gaskets, and the plurality of grooves 414 are respectively arranged with steel cylinders, and the gaskets are made of high-temperature-resistant silicone rubber; the placement table 41 is further provided with a plurality of uniformly distributed ventilation holes 415, and the ventilation holes 415 are arranged in a radial manner, and the ventilation holes 415 can communicate the electric heating wire 53 and the grooves 414, so that the hot air uniformly heats the steel cylinders.

[0040] In the embodiment of the present application, as shown in the drawings, Figures 1-9As shown, the vacuum suction device includes an air extraction pipeline 6, an exhaust fan 7 and an exhaust pipeline 8; the air extraction pipeline 6 and the exhaust pipeline 8 are respectively connected to the cabinet 1; the air extraction pipeline 6 and the exhaust pipeline 8 are both provided with the exhaust fan 7.

[0041] For example, the air extraction pipeline 6 and the exhaust pipeline 8 are respectively connected to the cabinet 1 through flanges; the air extraction pipeline 6 and the exhaust pipeline 8 are both provided with the exhaust fan 7, and are equipped with air pressure sensors and electric regulating valves for accurately controlling the pressure in the cabinet 1.

[0042] In the embodiment of the present application, as shown in the drawings, Figures 1-9 It also includes a quick connector 9, a lighting lamp 10 and a transparent window 11; the quick connector 9 is further arranged in the cabinet 1, and the steel cylinder can be communicated with the chromatograph through the quick connector 9; the lighting lamp 10 is further arranged in the cabinet 1; the transparent window 11 is further arranged on the cabinet 1.

[0043] For example, the quick connector 9 with self-sealing function is further arranged in the cabinet 1, and the steel cylinder can be communicated with the chromatograph through the quick connector 9; the explosion-proof LED lighting lamp 10 is further arranged in the cabinet 1 for providing shadowless lighting; the double-layer tempered glass transparent window 11 with defogging function is further arranged on the cabinet 1, which is convenient for observing the operation in the cabinet.

[0044] The embodiment of the present application provides a chromatograph detection method, as shown in the drawings, Figures 10-11 The steel cylinder leak-proof sample injection box of the chromatograph is used, and the method comprises the following steps: S1: Placing a plurality of steel cylinders containing samples in a plurality of slot holes 414 of the placing table 41, closing the cabinet door 2, and making the cabinet 1 in a sealed state; S2: Starting the vacuum suction device to form negative pressure in the cabinet 1 through the air extraction pipeline 6 and the exhaust fan 7, so as to prevent and control the leakage of harmful gas; S3: Starting the heating assembly 5 to control the first fan and the second fan to suck air into the shell 51, and after the air is heated by the electric heating wire 53, the hot air uniformly heats the steel cylinder through the air vent 415, and the heating temperature is adjusted to a preset value; S4: Starting the oscillation assembly 4, the power piece 42 drives the crank connecting rod mechanism 44 to run through the transmission piece 43, so that the placing table 41 generates vibration and angular deflection, and the steel cylinder is subjected to multi-dimensional oscillation, so as to promote the sample to be uniformly mixed, and after completion, the heating assembly 5 and the oscillation assembly 4 are closed; S5: Reliably connecting the outlet of the steel cylinder with the sample injection quick connector 9, and detecting the sample through the chromatograph; S6: After the detection is completed, the vacuum suction device is closed, and after the pressure in the cabinet returns to normal, the cabinet door 2 is opened to take out the steel cylinder.

[0045] For example, the suction device is started, and the negative pressure of-50 to-100 Pa is formed in the box 1 through the air exhaust pipe 6 and the exhaust fan 7 to prevent and control the leakage of harmful gas; the heating assembly 5 is started, and the first fan and the second fan are controlled to suck air into the shell 51, the air is heated to a set temperature through the electric heating wire 53, the hot air uniformly heats the steel cylinder through the air hole 415, and the temperature control system maintains the temperature fluctuation in the range of ±1℃; the power member 42 drives the crank connecting rod mechanism 44 to operate through the transmission member 43, so that the placement table 41 generates frequency-adjustable vibration, so that the steel cylinder is subjected to multi-dimensional oscillation, and the sample is uniformly mixed. After 10-30 minutes, the heating assembly 5 and the oscillation assembly 4 are turned off. The outlet of the steel cylinder is reliably connected with the sample inlet quick connector 9 through the operation glove 3, after confirming that there is no leakage, the sample is detected through the chromatograph; after the detection is completed, the suction device is turned off, the cabinet door 2 is opened after the pressure in the box returns to normal, and the steel cylinder is taken out, and the whole detection process is completed.

[0046] In the embodiments of the present application, as shown in Figures 10-11 The step S4 includes: S41: The power member 42 is started, and the output end of the power member 42 drives the transmission member 43 to operate, so that the rotating disc 441 rotates around the rotating shaft 433; S42: The rotating motion of the rotating disc 441 is converted into the linear reciprocating motion of the second connecting rod 443 through the crank connecting rod mechanism 44; when the second connecting rod 443 moves towards the second support 45, the placement table 41 is driven to occur angular deflection in the first direction through the cooperation of the sliding block and the sliding groove 4431 on the second connecting rod 443; S43: After the second connecting rod 443 and the placement table 41 abut, the placement table 41 is pushed to move towards the second support 45 as a whole, and the elastic member is compressed to store elastic potential energy; when the second connecting rod 443 moves away from the second support 45, the elastic member releases the elastic potential energy, and the placement table 41 is pushed to move back towards the first support 444 as a whole; S44: In the process of moving back of the placement table 41, the placement table 41 is driven to occur angular deflection in the second direction opposite to the first direction through the cooperation of the sliding block and the sliding groove 4431, so that one oscillation cycle is completed; S45: The oscillation cycle is repeated, so that the steel cylinder realizes multi-dimensional oscillation under the combined action of angular deflection and linear reciprocating motion.

[0047] For example, the steel cylinder realizes multi-dimensional oscillation under the combined action of angular deflection and linear reciprocating motion, so that the sample is fully mixed and gas-liquid balance is ensured.

[0048] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0049] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A leak-proof sample introduction cartridge for a chromatography steel cylinder, characterized in that, The utility model relates to a kind of steel cylinder heating device, including Box (1), one end of the box (1) is arranged on the ground, the other end of the box (1) is provided with suction vacuum device; Cabinet door (2), the side of the box (1) is rotatably connected with the cabinet door (2); Operating gloves (3), a plurality of operating gloves (3) are connected with the side of the box (1) at intervals, and the operating end of the plurality of operating gloves (3) is inserted into the box (1); Oscillation assembly (4), the oscillation assembly (4) is arranged in the box (1), and the output end of the oscillation assembly (4) is connected with placing table (41), and the placing table (41) is provided with steel bottle, and the oscillation assembly (4) is configured to oscillate steel bottle; Heating assembly (5), the bottom of the placing table (41) is provided with the heating assembly (5), and the heating assembly (5) is configured to heat the steel bottle.

2. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 1, wherein, The heating assembly (5) includes a housing (51), a cover plate (52), an electric heating wire (53), a first fan and a second fan. Two air inlets (511) are formed in the housing (51), one of the air inlets (511) is provided with the first fan, and the other air inlet (511) is provided with the second fan. One end of the housing (51) is connected to the box (1), and the other end of the housing (51) is connected with the cover plate (52). The electric heating wire (53) is arranged between the air inlet (511) and the cover plate (52). The first fan and the second fan draw air into the housing (51), the air is heated by the electric heating wire (53), and the heated air can be delivered to the placing table (41) by the first fan and the second fan and heat the steel bottle.

3. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 2 wherein, The oscillation assembly (4) includes a power member (42), a transmission member (43) and a crank linkage mechanism (44). The fixed end of the power member (42) is connected to the cover plate (52), and the output end of the power member (42) is connected to one end of the transmission member (43). The other end of the transmission member (43) is connected to one end of the crank linkage mechanism (44), and the other end of the crank linkage mechanism (44) is slidably abutted with the placing table (41).

4. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 3 wherein, The crank linkage mechanism (44) includes a turntable (441), a first connecting rod (442), a second connecting rod (443) and a first support (444). The transmission member (43) includes a first gear (431) and a second gear (432). The output end of the power member (42) is connected to the first gear (431), and the second gear (432) is rotatably connected to the turntable (441) through a rotating shaft (433). The first gear (431) and the second gear (432) are engaged. The turntable (441) is sleeved on the rotating shaft (433). The turntable (441) is provided with a sliding rail (4411). The first support (444) is connected to the cover plate (52). One end of the first connecting rod (442) is slidably connected to the slide rail (4411) through a connecting column, the other end of the first connecting rod (442) is rotatably connected to one end of the second connecting rod (443), the second connecting rod (443) passes through the first support (444), and the other end of the second connecting rod (443) is slidably abutted with the placing table (41); The second connecting rod (443) can make linear reciprocating motion, thereby driving the placing table (41) to vibrate.

5. The leak-proof sample introduction cartridge for a chromatograph steel cylinder according to claim 4, characterized in that, The oscillation assembly (4) further comprises a second support (45), a connecting rod (46) and an elastic member; The second support (45) is symmetrically arranged with the first support (444) relative to the placing table (41); The connecting rod (46) passes through the second support (45), and one end of the connecting rod (46) is slidably connected with the placing table (41); The elastic member is sleeved on the outer side of the connecting rod (46), one end of the elastic member is abutted with the end face of the placing table (41), and the other end of the elastic member is abutted with the end face of the second support (45).

6. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 5 wherein, The oscillation assembly (4) further comprises a sliding block; First and second mounting holes (411) and (412) are respectively formed in the two sides of the placing table (41); One end of the second connecting rod (443) away from the first connecting rod (442) is arranged in the first mounting hole (411); A recess (413) is formed in the side of the placing table (41) close to the first mounting hole (411), and the recess (413) is in communication with the first mounting hole (411); A sliding groove (4431) is formed in the end of the second connecting rod (443) close to the placing table (41); One end of the sliding block is arranged in the recess (413) and connected with the placing table (41), and the other end of the sliding block is arranged in the sliding groove (4431) and configured to slide in the sliding groove (4431); When the steel cylinder in the placing table (41) is oscillated, the second connecting rod (443) moves towards the second support (45), and the sliding block and the sliding groove (4431) can drive the placing table (41) to deflect in one direction; When the second connecting rod (443) abuts against the placing table (41), the second connecting rod (443) drives the placing table (41) to move towards the second support (45), at this time, the elastic member is in a compressed state; When the second connecting rod (443) moves away from the second support (45), the elastic member releases elastic force to drive the placing table (41) to move towards the first support (444); When the second connecting rod (443) continues to move away from the second support (45), the sliding block and the sliding groove (4431) can drive the placing table (41) to deflect in the other opposite direction, thereby completing one oscillation.

7. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 2 wherein, A plurality of slots (414) are arranged on the placing table (41), and the plurality of slots (414) are arranged with the steel cylinders; The placing table (41) is further provided with a plurality of air holes (415), and the air holes (415) are connected with the electric heating wire (53) and the slots (414).

8. The leak-proof sample introduction cartridge for a chromatograph cylinder of claim 1 wherein, The vacuum suction device comprises an air extraction pipeline (6), an air exhaust fan (7) and an air exhaust pipeline (8); The air extraction pipeline (6) and the air exhaust pipeline (8) are respectively connected with the cabinet (1); The air extraction pipeline (6) and the air exhaust pipeline (8) are provided with the air exhaust fan (7).

9. A method of detecting a chromatograph, characterized by, The steps of using the chromatograph steel cylinder anti-leakage sample box according to any one of claims 1-8 are as follows: S1: a plurality of steel cylinders containing samples are placed in the plurality of slots (414) of the placing table (41), and the cabinet door (2) is closed to make the cabinet (1) in a sealed state; S2: the vacuum suction device is started, and the cabinet (1) is formed with a negative pressure through the air extraction pipeline (6) and the air exhaust fan (7) to prevent and control the leakage of harmful gas; S3: the heating assembly (5) is started, the first fan and the second fan are controlled to suck air into the shell (51), the heated air is heated by the electric heating wire (53), the heated air is uniformly heated to the steel cylinders through the air holes (415), and the heating temperature is adjusted to a preset value; S4: the oscillation assembly (4) is started, the power element (42) drives the crank connecting rod mechanism (44) to operate through the transmission element (43), the placing table (41) is vibrated and angularly deflected, the steel cylinders are subjected to multi-dimensional oscillation, the sample is uniformly mixed, and after completion, the heating assembly (5) and the oscillation assembly (4) are closed; S5: the outlet of the steel cylinder is reliably connected with the sample inlet quick connector (9), and sample detection is performed through the chromatograph; S6: after detection, the vacuum suction device is closed, and after the pressure in the cabinet returns to normal, the cabinet door (2) is opened to take out the steel cylinder.

10. The chromatograph detection method of claim 9, wherein, Step S4 comprises: S41: the power element (42) is started, and the output end of the power element (42) drives the transmission element (43) to operate, so that the rotating disc (441) rotates around the rotating shaft (433); S42: the rotating motion of the rotating disc (441) is converted into the linear reciprocating motion of the second connecting rod (443) through the crank connecting rod mechanism (44); when the second connecting rod (443) moves towards the second support (45), the placing table (41) is angularly deflected in a first direction through the cooperation of the sliding block and the sliding groove (4431) on the second connecting rod (443); S43: after the second connecting rod (443) abuts against the placing table (41), the placing table (41) is pushed to move as a whole towards the second support (45), and the elastic element is compressed to store elastic potential energy; when the second connecting rod (443) moves away from the second support (45), the elastic element releases the elastic potential energy to push the placing table (41) to move as a whole back towards the first support (444); S44: during the movement of the placing table (41) back, the placing table (41) is angularly deflected in a second direction opposite to the first direction through the cooperation of the sliding block and the sliding groove (4431), so that one oscillation cycle is completed. S45: repeat the oscillation cycle to realize multi-dimensional oscillation of the steel cylinder under the combined action of angular deflection and linear reciprocating motion.

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