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Power-off protection device of gas chromatograph

A technology of a power-off protection device and a gas chromatograph, which is applied in the field of additional equipment of a gas chromatograph, can solve the problems of inability to provide delayed carrier gas for a chromatographic column and a detector, performance degradation, shortened life, etc. Effect

Inactive Publication Date: 2021-02-26
胡斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tungsten wire, the key component of the thermal conductivity detector of the gas chromatograph, also needs carrier gas to dissipate heat when it works normally. When there is no carrier gas flow, it is easy to be oxidized by the air diffused by the blowback, resulting in performance degradation and shortened life.
[0005] Therefore, to provide a stable carrier gas for the chromatographic column, the electronic gas circuit control system of the gas chromatograph usually uses an electronic proportional valve to control the introduction of the carrier gas. If it does not work, it cannot provide delayed carrier gas to the chromatographic column and detector. At this time, the heating unit is still in an uncooled state when the power is turned off. The chromatographic column and detection parts are easily damaged without the protection of the carrier gas at high temperature. The existing power-off protection device connects an external circuit to the circuit of the gas chromatograph, so that when the power is cut off, the delay carrier gas is provided to the chromatographic column and detector, but it can only play a protective role, and the gas chromatograph cannot continue to use , therefore, a power-off protection device for gas chromatograph is proposed

Method used

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  • Power-off protection device of gas chromatograph
  • Power-off protection device of gas chromatograph
  • Power-off protection device of gas chromatograph

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see Figure 1-3 , the present invention provides a technical solution: a power-off protection device for a gas chromatograph, comprising a housing 1, such as figure 1 As shown, the housing 1 is a rectangular cavity, and the inner surface of the housing 1 is respectively provided with a storage battery 2 and an inverter 3, and also includes a circuit necessary for realizing the function. The storage battery 2 is used to supply power to the gas chromatograph. The inverter 3 is used to convert the direct current of the battery 2 into an alternating current, the battery 2 and the inverter 3 are electrically connected, the side wall of the casing 1 is provided with a power interface 4, and the power interface 4 It is electrically connected with the inverter 3, the gas chromatograph is connected through the power interface 4, the battery 2 is electrically connected with one end of a wire 5, and the other end of the wire 5 is provided with a plug for connecting with an externa...

Embodiment 2

[0037] see Figure 4-6 , the difference between this embodiment and embodiment 1 is: as Figure 4 As shown, the driving device includes a rack 14, and the outer surface of one side wall of the housing 1 is provided with a receiving groove 15, such as Figure 5 As shown, the storage tank 15 is T-shaped, and the lower end of the inner surface of the storage tank 15 is rotatably connected with a second shaft 16, and a handle 17 is fixedly connected to the second shaft 16, and a handle 17 is fixed on the second shaft 16. There is a gear 18, the rack 14 is fixedly connected to the upper surface of the rectangular plate 7, the rack 14 passes through the side wall of the housing 1 and meshes with the gear 18, under normal conditions, under the action of gravity, Rectangular plate 7 and outward wheel 8 are all positioned at the inside of rectangular groove 6, and gear 18 drives rack 14, makes handle 17 be positioned at storage groove 15 inside, and when needing to move device, handle...

Embodiment 3

[0040] see Figure 7-8 The difference between this embodiment and Embodiment 1 is that: the upper side wall of the housing 1 runs through one end of a conduit 36, the other end of the conduit 36 ​​is fixedly connected with a carrier gas processing device, and the air outlet of the spectrometer Connected with the conduit 36, the carrier gas enters the interior of the conduit 36 ​​through the air outlet, the carrier gas processing device is located inside the housing 1, and the carrier gas processing device includes a main body 37, which is cylindrical , one end of the main body 37 runs through the side wall of the housing 1, the other end of the main body 37 is fixedly connected with a baffle 38, the surface of the baffle 38 is fixedly connected with a motor 39, and the output shaft of the motor 39 A ceramic filter plate 40 is fixedly connected through the baffle plate 38, and the ceramic filter plate 40 is located inside the main body 37, as Figure 7 As shown, the ceramic fi...

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Abstract

The invention discloses a power-off protection device of a gas chromatograph. The power-off protection device comprises a shell, wherein the shell is a rectangular cavity; the inner surface of the shell is respectively provided with a storage battery and an inverter; the storage battery is electrically connected with the inverter; the side wall of the shell is provided with a power interface; thepower interface is electrically connected with the inverter; the storage battery is electrically connected with one end of a wire; and the other end of the wire is provided with a plug. By arranging the shell, arranging the storage battery and the inverter in the shell and connecting the storage battery with an external 220-V mains supply, the storage battery is charged, and the inverter boosts the storage battery, converts direct current into alternating current, outputs the alternating current and supplies power to the gas chromatograph; when power is off, the storage battery keeps supplyingpower to the gas chromatograph, so the gas chromatograph can continue to work; and by arranging the rectangular plate and arranging universal wheels on the rectangular plate, the device is convenientto move, and the gas chromatograph does not need to be transformed.

Description

technical field [0001] The invention relates to the technical field of additional equipment for a gas chromatograph, and specifically relates to a power-off protection device for a gas chromatograph. Background technique [0002] Gas chromatography is widely used in petroleum, chemical industry, biochemistry, medicine and health, food industry, environmental protection and so on. In addition to quantitative and qualitative analysis, it can also determine the physical and chemical constants such as distribution coefficient, activity coefficient, molecular weight and specific surface area of ​​the sample on the stationary phase. [0003] The basic structure of the gas chromatograph has two parts. The Chinese patent with the notification number CN201781314U discloses a gas chromatograph, which includes a heating unit and an analysis display unit. Among them, the former mainly heats the sample, and the latter mainly collects the heated sample and analyzes and displays it. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/02G01N30/02
CPCG01N30/02H02J7/02H02J9/062
Inventor 胡斌周莉陈露露万柯驿
Owner 胡斌