CN210155094U

CN210155094U - Thermal conductivity detector with cooling structure

Info

Publication number: CN210155094U
Application number: CN201920218191.7U
Authority: CN
Inventors: 鲍贵娟
Original assignee: Qinghai Biwei Testing Technology Co Ltd
Current assignee: Qinghai Biwei Testing Technology Co Ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2020-03-17
Anticipated expiration: 2029-02-21

Abstract

The utility model discloses a thermal conductivity detector with cooling structure relates to check out test set technical field. The utility model comprises a thermal conductivity detector body; a first cavity and a second cavity are arranged in the thermal conductivity detector body; a thermal conductivity cell is arranged in the first cavity, a thermal conductivity cell outlet and a thermal conductivity cell inlet are respectively arranged at two ends of the thermal conductivity cell, and the thermal conductivity cell outlet and the thermal conductivity cell inlet extend out of the first cavity; a cooling pipe is arranged on the inner wall of the first chamber in a surrounding manner; cooling liquid is filled in the cooling pipe; the inlet end of the cooling pipe is communicated with the outlet of the circulating water pump positioned in the second chamber; an inlet of the circulating water pump is communicated with an outlet of the heat exchanger positioned in the second chamber; the outlet of the cooling pipe is communicated with the inlet of the heat exchanger. The utility model discloses a set up the cooling tube in the cavity that the thermal conductivity cell was placed to the thermal conductivity detector, utilize the circulation of coolant liquid to cool down to the thermal conductivity detector is inside fast in the cooling tube, shorten the cool-down time, improve test efficiency, practice thrift the carrier gas.

Description

Thermal conductivity detector with cooling structure

Technical Field

The utility model belongs to the technical field of check out test set, especially, relate to thermal conductivity detector with cooling structure.

Background

Chromatography is a separation and analysis tool for multi-component mixtures. It mainly utilizes the physical property of substance to separate the mixture, measures each component of the mixture, and makes quantitative and qualitative analysis for each component in the mixture. The thermal conductivity detector in the present detectors of various gas chromatographs is very common, but the present thermal conductivity detector needs to be continuously introduced with carrier gas for cooling after being used, the cooling time is long, and the waste of the carrier gas is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thermal conductivity detector with cooling structure through set up the cooling tube in the cavity that the thermal conductivity cell was placed to the thermal conductivity detector, utilizes the circulation of coolant liquid to cool down to the thermal conductivity detector is inside fast in the cooling tube, has solved current thermal conductivity detector and need continue to lead to the carrier gas cooling after using, and cooling time is longer, causes the extravagant problem of carrier gas.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a thermal conductivity detector with a cooling structure, which comprises a thermal conductivity detector body;

a first cavity and a second cavity are arranged in the thermal conductivity detector body; a thermal conductivity cell is arranged in the first chamber, a thermal conductivity cell outlet and a thermal conductivity cell inlet are respectively arranged at two ends of the thermal conductivity cell, and the thermal conductivity cell outlet and the thermal conductivity cell inlet extend out of the first chamber; a cooling pipe is arranged on the inner wall of the first chamber in a surrounding manner; cooling liquid is introduced into the cooling pipe; the inlet end of the cooling pipe is communicated with the outlet of a circulating water pump positioned in the second chamber; an inlet of the circulating water pump is communicated with an outlet of the heat exchanger positioned in the second chamber; the outlet of the cooling pipe is communicated with the inlet of the heat exchanger;

a semiconductor refrigerator and a fan are also arranged in the second chamber; one end of the semiconductor refrigerator is connected with the heat exchanger; the other end of the semiconductor refrigerator is connected with the fan; and the second cavity is provided with a vent hole communicated with the outside.

Furthermore, a heating plate and a temperature sensor are also arranged in the first cavity; the number of the heating sheets is two; the two heating sheets are symmetrically arranged on two sides of the thermal conductivity cell; the temperature sensor is arranged between the heating sheet and the thermal conductivity cell.

Further, the outer surface of the part of the cooling pipe, which is positioned in the first cavity, is provided with heat dissipation fins.

Further, the vent hole is opposite to the fan; and a ventilation cover is arranged on the ventilation hole.

Furthermore, a first filtering device and a second filtering device are also arranged on the thermal conductivity detector body; the inlet of the heat conducting pool is communicated with the first filtering device; and the outlet of the heat conductivity cell is communicated with the second filtering device.

Furthermore, the first filtering device and the second filtering device are symmetrically arranged on two side surfaces of the thermal conductivity detector body; and the second filtering device is filled with deoxidizing filler and activated carbon particles.

The utility model discloses following beneficial effect has:

the utility model discloses can reach quick cooling to the thermal conductivity cell, shorten the cooling time, improve test efficiency, practice thrift the carrier gas.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a thermal conductivity detector with a cooling structure according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a thermal conductivity detector body, 2-a first chamber, 3-a second chamber, 4-a thermal conductivity cell, 5-a thermal conductivity cell outlet, 6-a thermal conductivity cell inlet, 7-a cooling pipe, 8-a circulating water pump, 9-a heat exchanger, 10-a semiconductor refrigerator, 11-a fan, 301-a vent hole, 12-a heating sheet, 13-a temperature sensor, 14-a ventilation hood, 15-a first filtering device and 16-a second filtering device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "two ends", "one side", "lower", "outer surface", "upper", "inner", and the like indicate positional or positional relationships, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1, the thermal conductivity detector with a cooling structure of the present invention includes a thermal conductivity detector body 1; a first cavity 2 and a second cavity 3 are arranged in the thermal conductivity detector body 1; a thermal conductivity cell 4 is arranged in the first chamber 2, a thermal conductivity cell outlet 5 and a thermal conductivity cell inlet 6 are respectively arranged at two ends of the thermal conductivity cell 4, and the thermal conductivity cell outlet 5 and the thermal conductivity cell inlet 6 both extend out of the first chamber 2; a cooling pipe 7 is arranged on the inner wall of the first chamber 2 in a surrounding manner, one side of the cooling pipe 7 is attached to the inner wall of the first chamber 2, and the cooling pipe 7 can be made of aluminum with good heat-conducting property; cooling liquid is filled in the cooling pipe 7, and specifically, the cooling liquid can be water; the inlet end of the cooling pipe 7 is communicated with the outlet of a circulating water pump 8 positioned in the second chamber 3; the inlet of the circulating water pump 8 is communicated with the outlet of the heat exchanger 9 positioned in the second chamber 3; the outlet of the cooling pipe 7 is communicated with the inlet of the heat exchanger 9; the cooling pipe 7, the circulating water pump 8 and the heat exchanger 9 form a refrigeration loop.

A semiconductor refrigerator 10 and a fan 11 are also arranged in the second chamber 3; one end of the semiconductor refrigerator 10 is connected with the heat exchanger 9, specifically, the heat absorption end of the semiconductor refrigerator 10 is connected with the heat exchanger 9, and the semiconductor refrigerator 10 is used for refrigerating the heat exchanger 9; the other end of the semiconductor refrigerator 10 is connected with the fan 11, the heat release end of the semiconductor refrigerator 10 is connected with the fan 11, and the semiconductor refrigerator 10 is cooled by the fan 11; the second chamber 3 is provided with a vent hole 301 communicated with the outside.

During the concrete implementation, when needing to cool down thermal conductivity cell 4, for semiconductor cooler 10, fan 11 and circulating water pump 8 circular telegram, the coolant liquid in cooling tube 7 begins the circulation flow, and the coolant liquid obtains the cooling when flowing through the heat exchanger, when flowing to first cavity 2, carries out the heat exchange cooling through being located cooling tube 7 in first cavity 2 and first cavity 2, when the temperature in first cavity 2 drops to the required value, with semiconductor cooler 10, fan 11 and circulating water pump 8 outage can. The temperature of the thermal conductivity cell 4 can be quickly reduced at the time end of the whole cooling process; the test device provides convenience for the next test and improves the test efficiency.

Wherein, a heating plate 12 and a temperature sensor 13 are also arranged in the first chamber 2; the heating plate 12 is two pieces; the two heating sheets 12 are symmetrically arranged on two sides of the thermal conductivity cell 4; the temperature sensor 13 is disposed between the heating sheet 12 and the heat conductive cell 4.

Wherein the outer surface of the portion of the cooling tube 7 located in the first chamber 2 is provided with heat radiating fins (not shown in the figure). Specifically, the cooling tube 7 located in the first chamber 2 is provided with heat radiating fins on the surface far away from the inner wall of the first chamber 2, so that the heat absorbing area is increased, and the cooling in the first chamber 2 is accelerated.

Wherein, the vent hole 301 is opposite to the fan 11; the ventilation hole 301 is provided with a ventilation cover 14. The ventilation hood 14 can play a certain dustproof effect, and reduces the dust amount entering the second chamber 3.

Wherein, the thermal conductivity detector body 1 is also provided with a first filtering device 15 and a second filtering device 16; the inlet 6 of the thermal conductivity cell is communicated with a first filtering device 15, and an air inlet is arranged on the first filtering device 15; the outlet 5 of the thermal conductivity cell is communicated with the second filtering device 16, and an air outlet is arranged on the second filtering device 16. Wherein, the first filter device 15 and the second filter device 16 are symmetrically arranged on two side surfaces of the thermal conductivity detector body 1; the second filter device 16 is filled with a deoxidizing filler and activated carbon particles, so that the gas discharged from the thermal conductivity detector body 1 can be purified to prevent environmental pollution.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The thermal conductivity detector with the cooling structure is characterized by comprising a thermal conductivity detector body (1);

a first cavity (2) and a second cavity (3) are arranged in the thermal conductivity detector body (1); a thermal conductivity cell (4) is arranged in the first chamber (2), a thermal conductivity cell outlet (5) and a thermal conductivity cell inlet (6) are respectively arranged at two ends of the thermal conductivity cell (4), and the thermal conductivity cell outlet (5) and the thermal conductivity cell inlet (6) both extend out of the first chamber (2); a cooling pipe (7) is surrounded on the inner wall of the first chamber (2); cooling liquid is filled in the cooling pipe (7); the inlet end of the cooling pipe (7) is communicated with the outlet of a circulating water pump (8) positioned in the second chamber (3); the inlet of the circulating water pump (8) is communicated with the outlet of a heat exchanger (9) positioned in the second chamber (3); the outlet of the cooling pipe (7) is communicated with the inlet of the heat exchanger (9);

a semiconductor refrigerator (10) and a fan (11) are also arranged in the second chamber (3); one end of the semiconductor refrigerator (10) is connected with the heat exchanger (9); the other end of the semiconductor refrigerator (10) is connected with the fan (11); and the second chamber (3) is provided with a vent hole (301) communicated with the outside.

2. The thermal conductivity detector with a cooling structure according to claim 1, wherein a heating sheet (12) and a temperature sensor (13) are further provided in the first chamber (2); the heating sheets (12) are two sheets; the two heating sheets (12) are symmetrically arranged on two sides of the heat conduction pool (4); the temperature sensor (13) is arranged between the heating sheet (12) and the heat conduction pool (4).

3. The detector as claimed in claim 1, wherein the cooling pipe (7) is provided with heat dissipating fins on the outer surface of the portion located in the first chamber (2).

4. The thermal conductivity detector with a cooling structure according to claim 1, wherein the ventilation hole (301) is opposed to the fan (11); and a ventilation hood (14) is arranged on the ventilation hole (301).

5. The thermal conductivity detector with a cooling structure according to claim 1, wherein the thermal conductivity detector body (1) is further provided with a first filter device (15) and a second filter device (16); the inlet (6) of the heat conducting pool is communicated with the first filtering device (15); the outlet (5) of the heat conducting pool is communicated with the second filtering device (16).

6. The thermal conductivity detector with a cooling structure according to claim 5, wherein the first filter device (15) and the second filter device (16) are symmetrically disposed on two sides of the thermal conductivity detector body (1); and the second filtering device (16) is filled with deoxidizing filler and activated carbon particles.