CN218496848U

CN218496848U - Temperature programming column box of process gas chromatograph

Info

Publication number: CN218496848U
Application number: CN202222299360.9U
Authority: CN
Inventors: 宣鹏奇; 方梓潼; 王力
Original assignee: Zhejiang Glenn Technology Co ltd
Current assignee: Ningbo Huichuang Automatic Control Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-02-17
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a process gas chromatograph's program heating post case, including box and post stove, be provided with the installation through-hole in the middle of box and the post stove right flank bottom, and the inner wall of installation through-hole is pegged graft and is had air agitator, box and post stove right flank lower right corner are provided with the circuit through-hole, box and post stove left surface top are provided with the exhaust through-hole, the right flank and the back outer wall of box are provided with two-layer wear plate support, four interior angle levels in the lower part are provided with four brackets in the post stove inner wall, the bracket top is provided with the packing chromatographic column support frame, the bottom outer wall of chromatographic column support frame is provided with thermal-insulated I ceramic ring, and ceramic ring's inner wall is pegged graft and is had the electric stove silk, four facade inner wall middle parts of post stove are provided with capillary chromatographic column couple. The utility model discloses utilize air vortex multiple spot injection and electronic control technique, the even column incasement of ability rapid mixing gas reaches the purpose of accurate accuse temperature, satisfies the requirement of industrial continuous analysis.

Description

Temperature programming column box of process gas chromatograph

Technical Field

The utility model relates to a gas chromatograph technical field especially relates to a process gas chromatograph's programming column case.

Background

Process gas chromatographs are analytical techniques used in the chemical industry for the on-line separation and measurement of different components in a mixture, are commonly used for on-line monitoring, automatic cycle analysis, etc. of industrial processes, and are also known as process gas chromatographs or on-line gas chromatographs. In the 20 th century and 50 th century since the birth of gas chromatography, gas chromatography systems have entered the control of factory production processes from laboratories, including the analysis of the composition, quality and yield of raw materials, intermediates and products, the monitoring of key production processes, the monitoring of abnormal phenomena of industrial devices, and the alarming or timely feedback adjustment when abnormal phenomena are found in the production processes. At present, process gas chromatography is widely used in petroleum refining, petrochemical industry, chemical fertilizer, environmental protection, medicine and other industries.

In gas chromatography, temperature control of the column is classified as either isothermal or temperature programmed. The temperature programming means that the temperature of the chromatographic column is continuously increased linearly or nonlinearly according to the program set by the component boiling range, so that the column temperature and the boiling point of the component are corresponding to each other, and the low-boiling component and the high-boiling component are properly retained in the chromatographic column, the chromatographic peak is uniformly distributed, and the peak shape is symmetrical. The retention value of each component can be expressed as the corresponding temperature at the highest point of the chromatographic peak, i.e., the retention temperature. Thus, in on-line analysis, the use of temperature programming can improve separation, narrow peaks, lower detection limits, and improve analysis efficiency, among other things.

The conventional process gas chromatograph has the defects of difficult temperature program temperature rise control, poor temperature precision and repeatability, long temperature rise and fall time and easy fluctuation of temperature, and is not favorable for continuous analysis.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the difficult procedure intensification control in the current process gas chromatograph technique, temperature accuracy is poor, repeatability is poor, and the cooling time that heaies up is long, and the temperature is easily undulant, is unfavorable for continuous analysis's shortcoming, and the procedure temperature-rising column box of a process gas chromatograph who proposes.

In order to realize the purpose, the utility model adopts the technical scheme as follows:

a temperature programming column box of a process gas chromatograph comprises a box body and a column furnace, wherein installation through holes are formed in the middle of the bottom ends of the right side faces of the box body and the column furnace, and air stirrers are inserted into the inner walls of the installation through holes; the right lower corner of the right side surface of the box body and the column furnace is provided with a circuit through hole; the top ends of the left side surfaces of the box body and the column furnace are provided with exhaust through holes, and the inner walls of the exhaust through holes are spliced with exhaust pipelines; two layers of plate penetrating brackets are arranged on the outer walls of the right side surface and the back surface of the box body, a capillary chromatographic column penetrating plate is arranged on the bracket on the upper layer, and three filling chromatographic column penetrating plates with different heights are arranged on the bracket on the lower layer; four inner corners at the middle lower part of the inner wall of the column furnace are horizontally provided with four foot rests; a packed chromatographic column support frame is arranged at the top of the leg rest; a packed chromatographic column is arranged at the top of the packed chromatographic column support frame; the outer wall of the bottom of the packed chromatographic column support frame is provided with a heat-insulating I-shaped ceramic ring, and the inner wall of the I-shaped ceramic ring is inserted with an electric furnace wire; capillary chromatographic column hooks are arranged in the middle of the inner walls of the four vertical surfaces of the column furnace; and the top of the hook of the capillary chromatographic column is provided with the capillary chromatographic column.

Preferably, the box comprises four aluminum alloy stand columns and six aluminum alloy plates, the front, the back, the side and the bottom of the box are fixed on the stand columns through screws, and the heat-preservation cover of the box is fixed through hinges and spring lock catches.

Preferably, the column furnace is a sheet metal part.

Preferably, the bottom of the column furnace is fixed at the bottom of the box body through screws, and heat preservation cotton is used for heat preservation and heat insulation between the column furnace and the box body.

Preferably, the inner wall of the heat-insulating cover of the box body is provided with heat-insulating cotton and is fixed by using heat-insulating cloth, and a sealing rubber pad is arranged at the joint of the heat-insulating cover and the column furnace.

Preferably, the pipe wall on the upper side of the air stirrer is provided with equidistant circular through holes, the tail end of the air stirrer extends out of the installation through hole to be connected to an air inlet pipeline of the air stirrer, the air inlet pipeline of the air stirrer is connected with a three-way joint, the other two ends of the three-way joint are respectively connected with two air inlet pipelines, one of the pipelines continuously admits air, the other pipeline is connected with an electromagnetic valve, and whether the air is admitted or not is controlled according to a programmed heating instruction.

Preferably, the outer wall of the bottom of the support frame of the packed chromatographic column is provided with a temperature control system, and the temperature control system comprises a temperature sensor and a heating rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the temperature programming column box of the process gas chromatograph, the electric furnace wire is fixed on the filling chromatographic column support frame through the heat insulation I-shaped ceramic ring, so that a heat source can be suspended in air in the column box, and the phenomenon that the heat is brought away by the contact of the furnace wall of the column furnace and the temperature is uneven during heating is avoided. The air stirrer utilizes air vortex multipoint injection, can rapidly stir gas in the column box, and achieves the purpose of accurate temperature control. By utilizing the electronic control technology, a large amount of air is sprayed when the temperature control program starts to execute the temperature reduction program, so that the aim of quickly reducing the temperature is fulfilled.

2. This process gas chromatograph's program heating column case through being provided with temperature control system, because temperature sensor is fixed in the center round hole of packing chromatographic column support frame, can test the actual temperature of chromatographic column during operation more accurately to provide quicker, more accurate response to the program heating instruction.

3. This process gas chromatograph's programming column case, through setting up the box that can dismantle in a flexible way, the installation, the maintenance of the later stage programming column incasement of being convenient for is maintained, also can more conveniently add the stopper heat preservation cotton between box and column furnace, the heat preservation lid of box uses spring lock to fix, heat preservation lid and column furnace junction are provided with the sealing rubber circle to reduce the temperature loss between heat preservation lid and the column furnace, guaranteed the heat preservation effect of system, improve temperature stability.

Drawings

Fig. 1 is a perspective view of the overall structure of a temperature programmed column box of a process gas chromatograph according to the present invention;

fig. 2 is a top view of the overall structure of a temperature programmed column box of a process gas chromatograph according to the present invention;

fig. 3 is a sectional view of a column oven structure of a temperature-programmed column box of a process gas chromatograph according to the present invention;

fig. 4 is a perspective view of the structure inside the column oven of the temperature programmed column box of the process gas chromatograph according to the present invention.

In the figure: 1 heat preservation lid, 2 boxes, 3 hinges, 4 spring lock catches, 5 capillary chromatographic column wear boards, 6 packing chromatographic column wear boards, 7 circuit through-holes, 8 air agitator air inlet pipeline, 9 three way connection, 10 solenoid valves, 11 exhaust pipeline, 12 post stoves, 13 capillary chromatographic column couple, 14 packing chromatographic column support frames, 15 temperature control system, 151 temperature control system circuit, 16 capillary chromatographic columns, 17 packing chromatographic columns, 18I-shaped ceramic ring, 19 electric stove silk, 20 air agitator.

Detailed Description

For a better understanding of the present invention, the following detailed description is provided to describe the technical solutions of the present invention in connection with the accompanying drawings.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout

The same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, a temperature-programmed column box of a process gas chromatograph comprises a box body 2 and a column furnace 12, wherein an installation through hole is arranged between the bottom ends of the right side surfaces of the box body 2 and the column furnace 12, an air stirrer 20 is inserted into the inner wall of the installation through hole, a line through hole 7 is arranged at the lower right corner of the right side surfaces of the box body 2 and the column furnace 12, an exhaust through hole is arranged at the top ends of the left side surfaces of the box body 2 and the column furnace 12, an exhaust pipeline 11 is inserted into the inner wall of the exhaust through hole, two layers of plate-through brackets are arranged on the outer walls of the right side surface and the back surface of the box body 2, and a capillary chromatographic column plate 5 is arranged on the bracket at the upper layer, be provided with three not packing chromatographic column on the support of lower floor and wear board 6, four interior angle levels of lower part are provided with four brackets in the inner wall of column furnace 12, the top is provided with packing chromatographic column support frame 14, packing chromatographic column support frame 14 top is provided with packing chromatographic column 17, the bottom outer wall of packing chromatographic column support frame is provided with thermal-insulated I-shaped ceramic ring 18, and the inner wall of I-shaped ceramic ring is pegged graft and is had electric stove silk 19, four facade inner wall middle parts of column furnace 12 are provided with capillary chromatographic column couple 13, capillary chromatographic column couple 13 top is provided with capillary chromatographic column 16.

Box 2 comprises four aluminum alloy stands and six aluminum alloy plate, and the front of box 2, the back, side and underrun screw fixation in stand, box 2's heat preservation lid 1 is fixed through hinge 3 and spring catch 4, post stove 12 is the sheet metal component, 12 bottoms of post stove are through screw fixation in 2 bottoms of box, and use the heat preservation cotton to keep warm between post stove 12 and the box 2 thermal-insulated, 1 inner wall of heat preservation lid of box 2 is provided with the heat preservation cotton, and use the heat preservation cloth to fix, be provided with sealing rubber pad at the junction of heat preservation lid 1 and post stove 12. Through setting up the box 2 that can dismantle in a flexible way, the installation, the later stage program heating post incasement of being convenient for maintains the maintenance, it is cotton also to add the heat preservation more conveniently between box 2 and post stove 12, 1 uses spring lock 4 to fix the heat preservation lid of box 2, the heat preservation lid 1 is provided with the sealing rubber circle with post stove 12 junction to reduce the temperature loss between heat preservation lid 1 and the post stove 12, guaranteed the heat preservation effect of system, improve temperature stability.

The pipe wall of the upper side of the air stirrer 20 is provided with equidistant circular through holes, the tail end of the air stirrer 20 extends out of a mounting through hole to be connected to an air inlet pipeline 8 of the air stirrer, an electric furnace wire 19 is fixed on a support frame 14 of the packed chromatographic column through a heat insulation I-shaped ceramic ring 18, a heat source can be suspended in air in a column box, the heat is prevented from being brought away by the contact of the furnace wall of the column furnace during heating, the temperature is not uniform, the air stirrer 20 utilizes air eddy current to spray at multiple points, gas in the column furnace 12 can be rapidly stirred uniformly, and the purpose of precise temperature control is achieved. The air mixer air inlet pipeline 8 is connected with a three-way joint 9, the other two ends of the three-way joint 9 are respectively connected with two air inlet pipelines, one of the three air inlet pipelines continuously admits air, the other air inlet pipeline is connected with an electromagnetic valve 10, and a large amount of air is sprayed in when a temperature control program starts to execute a cooling program by utilizing an electronic control technology, so that the aim of quickly cooling is fulfilled.

The outer wall of the bottom of the chromatographic column support frame 14 filled in the column furnace 12 is provided with a temperature control system 15, and the temperature control system comprises a temperature sensor and a heating rod. Because temperature sensor is fixed in the central round hole of packing chromatographic column support frame, can test the actual temperature of chromatographic column during operation more accurately to provide quicker, more accurate response to the program heating instruction.

The operation process of the temperature programmed column box of the process gas chromatograph is as follows:

when a heating rod connected with the electric stove wire 19 receives a temperature rise instruction, heating is started, the electromagnetic valve 10 is in a closed state, the other path of air continuously enters air, eddy current multi-point injection is carried out through equidistant circular through holes arranged on the upper side pipe wall of the air stirrer 20, the injected air drives heat generated by the electric stove wire 19 to be quickly and uniformly stirred in the whole cylindrical stove 12, and therefore the effects of quick temperature rise and stability are achieved; when the heating rod receives a cooling instruction, the power is temporarily cut off, meanwhile, the electromagnetic valve 10 is opened, air with larger flow enters the air stirrer 20, heat in the column furnace 12 is continuously taken away by the air and enters the exhaust pipeline 11, and therefore the purposes of rapid cooling and stability are achieved.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a procedure temperature rise column box of process gas chromatograph, including box (2) and column furnace (12), a serial communication port, be provided with the installation through-hole in the middle of box (2) and column furnace (12) right flank bottom, and the inner wall of installation through-hole is pegged graft and is had air agitator (20), box (2) and column furnace (12) right flank lower right corner are provided with circuit through-hole (7), box (2) and column furnace (12) left flank top are provided with exhaust through-hole, and exhaust through-hole's inner wall is pegged graft and is had exhaust pipe (11), box (2) right flank and back outer wall are provided with two-layer and wear the board support, and be provided with one capillary chromatographic column on the support of upper strata and wear board (5), be provided with three not co-altitude packing chromatographic column on the support of facade lower floor and wear board (6), four interior angle levels of column furnace (12) inner wall middle and lower part are provided with four bracket, the top is provided with packing chromatographic column support frame (14), packing chromatographic column support frame (14) top is provided with packing chromatographic column (17), the bottom outer wall of packing chromatographic column support frame is provided with thermal-insulated I-shaped ceramic ring (18), and the plug-in-connection chromatographic column furnace (18), there are provided with capillary column hanger (13) in the middle part of plug-in the capillary chromatographic column (13), the capillary column (13).

2. The temperature programmed column box of process gas chromatograph according to claim 1, characterized in that said box (2) is composed of four aluminum alloy columns and six aluminum alloy plates, and the front, back, side and bottom surfaces of the box are fixed to the columns by screws, and the thermal cover (1) of the box is fixed by hinges (3) and spring latches (4).

3. The programmed temperature column box of a process gas chromatograph of claim 1, wherein the column oven (12) is a sheet metal part.

4. The temperature-programmed column box of process gas chromatograph according to claim 3, characterized in that the bottom of said column oven (12) is fixed to the bottom of said box (2) by screws, and heat insulation is performed between said column oven (12) and said box (2) by using heat insulation cotton.

5. The temperature programmed column box of process gas chromatograph of claim 2, wherein,

the inner wall of the heat preservation cover (1) of the box body (2) is provided with heat preservation cotton and is fixed by using heat preservation cloth, and a sealing rubber pad is arranged at the joint of the heat preservation cover (1) and the column furnace (12).

6. The temperature-programmed column box of process gas chromatograph according to claim 1, wherein the upper side wall of the air stirrer (20) is provided with equidistant circular through holes, the tail end of the air stirrer (20) extends out of the installation through hole to be connected to the air stirrer inlet pipeline (8), the air stirrer inlet pipeline (8) is connected with a three-way joint (9), the other two ends of the three-way joint (9) are respectively connected with two air inlet pipelines, one of the three air inlet pipelines continuously supplies air, and the other air inlet pipeline is connected with the electromagnetic valve (10), and whether air is supplied or not is controlled according to a temperature-programmed instruction.

7. The programmable temperature column box of a process gas chromatograph of claim 1, wherein the outer wall of the bottom of the packed chromatography column support rack (14) is provided with a temperature control system (15), and the temperature control system (15) comprises a temperature sensor and a heating rod.