WO2005078354A1 - 直接加熱管及び該管を用いた流体の加熱方法 - Google Patents
直接加熱管及び該管を用いた流体の加熱方法 Download PDFInfo
- Publication number
- WO2005078354A1 WO2005078354A1 PCT/JP2004/001564 JP2004001564W WO2005078354A1 WO 2005078354 A1 WO2005078354 A1 WO 2005078354A1 JP 2004001564 W JP2004001564 W JP 2004001564W WO 2005078354 A1 WO2005078354 A1 WO 2005078354A1
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- WIPO (PCT)
- Prior art keywords
- heating tube
- tube
- heating
- pipe
- direct
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
Definitions
- the present invention relates to a direct heating tube and a method for heating a fluid using the tube.
- the present invention relates to a directly heated bright tube that heats a fluid such as a liquid or a gas by heating the tube when the fluid passes through the tube. More specifically, a column heated in a gas chromatograph, and a sample for a gas chromatograph. Heat pipe (transfer line) for keeping the power ram warm from the heating tube at the inlet and the analytical column in the gas chromatograph mass spectrometer (GC ZMS) to the ionization chamber, and the hydrogen flame from the gas chromatographic column. Tubes, etc., used to introduce a sample into a detector such as an integrated detector (FID), where electrodes are connected to the tube and a direct or alternating current is passed directly through the tube to directly heat it. It relates to a heating tube.
- a detector such as an integrated detector (FID)
- a sample is concentrated using a capillary column or packed column before introducing the sample into a separation column that separates components to increase the analytical sensitivity of the component to be analyzed.
- a cold-on force ram injection method or a programmed temperature vaporization method is used.
- a gas chromatograph mass spectrometer GC ZMS
- a detector such as a flame ionization detector (FID)
- FID flame ionization detector
- the main methods of concentrating and collecting samples in a gas chromatograph are mainly to send a sample to a packing force column filled with a packing material that selectively adsorbs and collects the components to be analyzed in the sample, and to convert the sample to the packing material
- the column is heated to desorb the analyte from the packing material, or the sample is sent to a cooled ram to adsorb and condense the analyte in the sample on the inner wall of the column.
- the column is heated to vaporize the component to be analyzed and desorb at high speed.
- an insulated heater tube 90 such as a sheath heater is directly connected to a tube to be heated such as a column 91 (hereinafter simply referred to as a tube 9).
- a tube 9 a tube to be heated
- a method using a heating tube in which electrodes 93 and 93 are provided at both ends of the tube 91 and DC or AC current is directly passed through the tube 91 to heat the tube 91, Then, as shown in Fig. 13, insert a heater 95 and a sensor 96 together with the pipe 91 into a heating block 94 made of aluminum, brass, etc.
- There is a method of heating and thereby keeping the inserted tube 91 heated by heat for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 5-520274 / 1994. I have.
- GC ZMS gas chromatograph mass spectrometer
- FID flame ionization detector
- FID flame ionization detector
- a heat pipe used to transport the sample to the detector
- the first method can be implemented very easily, but when cooling and heating are performed alternately and the temperature changes drastically as in a cryotrap used for gas chromatography, for example, the electrical Insulation can break down, which can be dangerous. Therefore, it is necessary to select and use a heater having a sufficient insulation distance and a safe dot density in design, and as a result, the rate at which the tube is heated may not be fast enough.
- This heating rate greatly affects the shape of the chromatogram peak, as shown in FIG. In other words, the faster the heating rate, the narrower the sample band and the more sensitive the sample can be detected.The slower the heating rate, the wider the sample band and the more sensitive the sample. It is gone.
- the second disadvantage is that the heating rate is low similarly to the first method. Because the specific heat capacity of gas is very small, if rapid heating is required, it is necessary to flow a large amount of high-temperature gas at a stretch, but in order to achieve this, the equipment becomes large-scale, The production cost is also high.
- a very high heating rate can be obtained by directly passing an electric current instead of the tube 91 itself as a heater.
- the conventional direct heating method has a heat mass (heat mass) at the electrode portions at both ends, there is a problem that the temperature at both end portions is necessarily low, that is, a so-called cold spot is formed. Then, in order to avoid this, measures were taken such as adding a heating section for keeping the temperature separately at both ends.
- the connection between the electrode 93 and the power supply is made of nickel wire or copper wire.
- the assembly was very complicated, such as welding or welding the wire directly to the tube.
- the fourth method can be performed very easily, and is often used in a sample introduction section of a gas chromatograph.
- the cold injection method which has been widely used in recent years, requires more time until heating due to its large heat capacity, and more time when cooling. The reality is that you can't adapt.
- a detector such as a flame ionization detector
- the gas chromatogram oven was also heated, which had an undesired effect on the detector and the oven.
- the present invention solves the above-mentioned conventional problems, and has a sufficient heating rate and cooling rate, and has a uniform temperature distribution as a whole without cold spots in the pipe, or has a desired temperature gradient. It is an object of the present invention to provide a direct heating tube which has a temperature distribution and can keep the temperature of a fluid passing through the inside of the tube constant or give a desired change to the temperature of the fluid. It is also an object of the present invention to provide a direct heating tube that does not adversely affect nearby detectors and open devices by heating the tube, and a direct heating tube having a simple configuration that can be manufactured at low cost. Aim. It is another object of the present invention to provide a direct heating tube capable of designing an electrode portion in consideration of ease of assembly. It is another object of the present invention to provide a heating method for keeping the temperature of a fluid passing through a pipe constant or for giving a desired change to the temperature of the fluid. Disclosure of the invention
- the first means for solving the above-mentioned problem is that when passing a fluid, A direct heating tube for heating a body, wherein a second heating tube connected to the first heating tube is provided outside of the first heating tube at a desired heating position of the tube. Tube.
- the second means is a direct heating tube characterized in that in the first means, a second heating tube is provided over the entire length of a desired heating portion of the direct heating tube.
- the third means is a direct heating tube characterized in that in the first means, second heating tubes are provided at both ends of a desired heating portion of the direct heating tube.
- a fourth means is the direct heating pipe according to the first means, wherein a second heating pipe is provided at one end of a desired heating portion of the direct heating pipe.
- a fifth means is a direct heating tube characterized in that in any one of the first to fourth means, an electrode portion is connected to the second heating tube.
- a sixth means is the direct heating tube according to the fifth means, wherein the electrode portion is directly connected to the second heating tube.
- a seventh means is a direct method characterized in that in any one of the first to sixth means, a gradient change is provided in the thickness of the first heating tube or Z and the second heating tube. Heating tube.
- An eighth means is the direct heating pipe according to any one of the first to seventh means, wherein the direct heating pipe is a column or a heat pipe.
- the ninth means is to use a direct heating tube provided with a second heating tube connected to the first heating tube outside the first heating tube at a desired portion of the tube to be heated.
- a first heating tube is heated by connecting an electrode portion to the first heating tube, and a fluid passing through the inside of the tube is heated.
- the direct heating pipe has a sufficient heating rate and cooling rate, and has no cold spots in the pipe, and has a uniform temperature throughout. Distribution, and a temperature distribution having a desired temperature gradient can be maintained, and the temperature of the fluid passing through the pipe can be kept constant or a desired change can be given to the temperature of the fluid. became. Also, heating the heating tube directly has no adverse effect on nearby detectors and ovens. Furthermore, it was possible to obtain a simple configuration in which direct heating can be manufactured at low cost. In addition, it became possible to design the electrode section of the direct heating tube in consideration of ease of assembly. Brief description of figure
- FIG. 1 is a perspective view of one embodiment of the present invention
- FIG. 2 is a cross-sectional view of another embodiment of the present invention
- FIG. 3 is a schematic diagram showing the difference between the effects of the present invention and the conventional method
- FIG. FIG. 5 is a conceptual view of one embodiment of the present invention
- FIG. 5 is a longitudinal sectional view of Example 1 of the present invention
- FIG. 6 is a longitudinal sectional view of a comparative example of Example 1 of the present invention
- FIG. FIG. 8 is a graph showing the difference between the effects of Example 1 of the present invention and Comparative Example.
- FIG. 8 is a longitudinal sectional view of Example 2 of the present invention.
- FIG. 9 is a longitudinal sectional view of Example 3 of the present invention.
- FIG. 10 is a longitudinal sectional view of Embodiment 4 of the present invention
- FIG. 11 is a sectional view showing a conventional example of a heating tube
- FIG. 12 is a sectional view showing a conventional example of a heating tube
- FIG. 13 is a cross-sectional view showing a conventional example of a direct heating tube
- FIG. 14 is a cross-sectional view showing a conventional example of a heating tube
- FIG. Chromatogram peak shape A click opening chromatogram showing the affect.
- the direct heating tube 1 (hereinafter simply referred to as tube 1) is configured to include a first cylindrical heating tube 2 and a second cylindrical heating tube 3 installed outside the first heating tube 2. I have.
- the second heating tubes 3, 3 radiate outward from both ends of the first heating tube 2
- the first heating tube 2 is formed so as to have an appropriate length in the direction of the center of the first heating tube 2 from the end of the flange 4, 4 vertically erected on the first heating tube 2.
- the second heating tube 3 is installed parallel to the side surface of the heating tube 2, that is, on the outside of the first heating tube 2 and concentrically with the first heating tube 2.
- the place where the second heating tube 3 of the tube 1 is provided has a double tube structure.
- Tube 1 is a packed column, various power rams such as a one-way ram with or without a stationary phase coated or packed, heat pipe, transfer line between gas chromatograph and mass spectrometer of gas chromatograph mass spectrometer, etc. It is used as various direct heating tubes that need to be heated.
- the tube 1 includes a tube in which the fluid to be heated passes directly through the first heating tube 2 and a tube in which a separate tube through which the fluid to be heated passes is provided in the first heating tube 2.
- the material used for the tube 1 depends on the application of the tube 1 and the operating temperature range suitable for it, mainly metals and alloys such as copper, aluminum and stainless steel, and heat-resistant metal or stainless steel is suitable for many applications Force, conductive ceramic and conductive polymer can also be used.
- the total length of the pipe 1 is not particularly limited and is determined according to the use thereof, but a pipe having a length of about 10 to 500 mm is mainly used.
- the second heating tube 3 and the flange 4 are desirably made of the same material as the first heating tube 2, but it is also possible to use another material which is a good conductor of electricity and has a high thermal conductivity. is there. In addition, it is generally desirable that the connecting portion between the first heating pipe 2 and the second heating pipe 3 has its thermal mass minimized.
- the first heating tube 2 corresponds to a conventional direct heating tube itself, and the second heating tube 3 maintains a constant temperature distribution in the first heating tube 2 at a desired portion of the tube 1 to be heated, or has a desired temperature. This is a tube for obtaining a temperature distribution having a gradient.
- the second heating tube 3 when the second heating tube 3 is energized from the electrode section 6 installed in the second heating tube 3, the first heating tube 2 is energized and heated, and the second heating tube 3 is heated.
- the heat tube 3 itself is heated and radiates heat to heat the first heating tube 2 by the radiant heat.
- the desired portion to be heated is a range within the entire length of the tube 1 in which the first heating tube 2 is to be heated, and may be over the entire length of the tube 1 or a part thereof.
- the second heating tube 3 is provided in at least a part of the desired heating portion of the tube 1, and an appropriate range of the desired heating portion is a double tube structure.
- the second heating pipes 3, 3 are connected to both ends of the first heating pipe 2 as described above.
- one second heating tube 3 having both ends connected to the first heating tube 2 may be provided over the entire length of the first heating tube 2 so that the entire length of the tube 1 has a double-tube structure.
- the heating tubes 3 and 3 are extended from both ends of the first heating tube 2 at the desired portion of the heating toward the center so that an appropriate range of the tube 1 is provided.
- one second heating tube 3 connected to both ends of the desired heating portion may be provided over the desired heating portion to make the entire length of the desired heating portion a double-tube structure.
- one end of the desired heating portion of the tube 1 maintains the desired heating temperature, and the other end has a desired force (if the temperature may be lower than the I heating temperature, the second heating tube 3 is connected to the desired heating portion of the tube 1. It may be provided only at one end on the side where the desired heating temperature is desired to be maintained.
- the flange 4 is a member that connects the second heating tube 3 to the first heating tube 2. In addition, if the flange 4 can fix the second heating tube 3 to the first heating tube 2 and can hold it at an appropriate distance outside the second heating tube 2, the planting direction is not fixed. However, it is not necessary to connect the first heating pipe 2 or the second heating pipe 3 to the end of the flange 4, and connect the first heating pipe 2 or the second heating pipe 3 to an appropriate part of the flange 4. You may do it.
- the flange 4 is annular and has a thickness equal to that of the first heating pipe 2 or the second heating pipe 3 or may have an appropriate thickness. A member such as a column connection port used for connection may be used as a flange. Yes. Further, the second heating pipe 3 may be directly connected to the first heating pipe 2 by welding or the like without providing the flange 4.
- the total length of the tube 1, that is, the first heating tube 2 is not particularly limited, and is determined according to its use, but is generally in the range of 10 to 500 mm.
- the total length of the second heating tube 3 is not particularly limited, but may be set according to a required temperature gradient in the first heating tube 2, and is set in a range from 0 mm to the total length of the first heating tube 2. It is possible.
- 0 mm means the other end where the second heating tube 3 is not provided when the second heating tube 3 is provided only at one end of the desired heating portion of the tube 1, or the desired heating portion of the tube 1 This means a case where only the second heating pipe 3 is provided at one end and only the flange 4 is provided at the other end, and an electrode is connected to the flange 4.
- the diameter D1 of the first heating tube 2 is not particularly limited, and may be appropriately designed according to its use, but a range of approximately 0.5 to 25 mm is mainly used.
- the distance between the first heating pipe 2 and the second heating pipe 3 is 1 2D.
- ⁇ D is not limited to this range, and may be an appropriate value depending on external factors such as a power supply capacity required for heating, a temperature sensor installed on the heating tube, and a cooling mechanism installed on the heating tube. It is possible to do.
- the second heating pipe 3 was installed directly on the first heating pipe 2 without using a flange, the thickness of the first heating pipe 2 or the thickness of the second heating pipe 3 had a gradient change. In this case, the value is not constant.
- the thickness t1 of the first heating tube 2 and the thickness t2 of the second heating tube 3 are not particularly limited, but may vary depending on the material used, but may be approximately 0.05 to 0.5 mm. A range is preferred.
- the thickness t 1 of the first heating tube 2 and the second heating tube 3 Thickness t 2 also depends on the power supply capacity used for heating. Also, the thickness t1 of the first heating tube 2 and the thickness t2 of the second heating tube 3 are not made to be uniform over their entire lengths, but to make the temperature gradient uniform or arbitrary. In order to achieve the temperature gradient of the above, a gradient change may be provided to the wall thickness.
- the thickness t1 of the first heating tube 2 and the thickness t2 of the second heating tube 3 may be the same, or may be different.
- the total length and thickness t2 of the second heating tube 3 are set within a range in which the second heating tube 3 can dissipate heat and the first heating tube 2 can be overheated by the radiant heat depending on the power supply capacity used for heating. It is necessary.
- the first heating tube is determined depending on the presence or absence of the flange 4, and further, depending on the installation position of the electrode portion 6.
- the temperature gradient in 2 can be set arbitrarily.
- the first heating tube 2 and the second heating tube 3 are not limited to a cylindrical shape, and may be formed to have an elliptical, square or other polygonal cross section. Of heating tubes 3 may have different cross sections.
- the second heating tube 3 may be installed concentrically with the first heating tube 2, or the distance between the second heating tube 3 and the first heating tube 2 may be the same. Desirable, but not necessarily the same distance on concentric circles.
- An electrode portion 6 is provided outside the second heating tube 3.
- the connection between the electrode section 6 and the power supply section 69 is not particularly limited, but it is preferable to use the conductive wire 61 and use a material having a low electric resistance such as a nickel wire or a copper wire.
- the assembly of the electrode is very complicated, such as welding or connecting wires directly to the tube to minimize the thermal mass of the electrode.
- the electrode section 6 is used to weld or weld the electric wire directly to the second heating tube 3.
- the conducting wire 61 is connected to an electrode plate 62 having a hole through which the second heating tube 3 can be passed, and the second heating tube 3 is passed through the electrode plate 62 to form an electrode.
- an appropriate installation method can be adopted.
- the electrode portion 6 may be installed directly on the second heating tube 3 or may be installed on a conductive flange or the like connected to the second heating tube 3.
- the electrode portion 6 at the other end is directly installed on the first heating tube 2 or installed on a flange or the like connected to the first heating tube 2. do it.
- the tube 1 By thus forming the tube 1 as a double tube and providing the electrode portion 6 on the second heating tube 3, the action of radiant heat between the second heating tube 3 and the first heating tube 2 is reduced. Thus, it is possible to prevent the temperature of the first heating tube 2 from dropping due to the loss of thermal mass in the electrode section 6.
- the temperature distribution in the first heating tube 2 is that the temperature at the end of the tube provided with the electrode portion is much larger than the set value in the conventional example in which the electrode portion is provided directly on the heating tube.
- the temperature at the end of the pipe also shows a substantially set value, and it is possible to show a uniform temperature distribution over the entire pipe.
- a temperature sensor 97 installed on the first heating tube 2 is connected to the comparison operation unit 98 in the tube 1 in the same manner as the conventional direct heating tube.
- the preset desired heating temperature in the pipe and the temperature information from the temperature sensor 97 are processed by the comparison calculation section 98, and the power pack section 69 controls the built-in pack to adjust the temperature of the desired heating section of the pipe 1. Configuration.
- FIG. 5 is a longitudinal sectional view of one embodiment in which the direct heating tube 1 of the present invention is applied to a sample introduction part of a gas chromatogram.
- the first heating tube 2 constitutes a sample vaporizing section
- a flange 4 is radially erected from the lower end of the first heating tube 2
- a second heating tube 3 is provided at the outer peripheral end of the thin plate-like flange 4. It is installed concentrically with the first heating pipe 2 up to a substantially intermediate point of the one heating pipe 2.
- it is equipped with columns 80, a liner 81, a carrier gas line 82, a discharge line 83, a septum 84, etc. like the sample introduction part of a normal gas chromatogram.
- the first heating pipe 2 and the second heating pipe 3 and the flange 4 are connected by welding.
- a flange 71 is provided at the upper end of the second heating tube 3
- a tube 72 is provided at an outer peripheral end of the flange 71
- a flange 73 is provided at an upper end of the tube 72
- an electrode 6 is provided at the flange 73.
- a flange 75 is provided at the upper end of the first heating tube 2 so as to be vertically and radially erected from the first heating tube 2, and the electrode portion 6 is provided on the flange 75.
- the outer diameter of the first heating tube 2 is 6.350 mm
- the wall thickness is 0.152 mm
- the length is 72 mm
- the outer diameter of the second heating tube 3 is 9.5 25 mm
- the wall thickness is 0.152 mm and the length is 29 mm.
- the material of both pipes is stainless steel.
- the thickness of flange 4, flange 71, tube 72, flange 73 and flange 75 is p. 5 mm, and the material is stainless steel.
- Example 1 As a comparative example of Example 1, there is no heating tube outside the heating tube 91 as shown in FIG. 6, that is, the ability to heat the heating tube 91 with the radiant heat. No outer tube 79 of 0.5 mm thickness and stainless steel material is used in place of the second heating tube 3 of the first embodiment.
- Fig. 7 shows the results of measuring the temperature distribution in each tube using the sample introduction section with the configuration connected to As can be seen from FIG. 7, although the temperature at the portion where the second heating pipe 3 is provided has a slight temperature drop at the lower end, there is no extreme temperature drop unlike the comparative example without the second heating pipe 3. , The temperature distribution is substantially uniform within a range of 10 to 40 mm from the lower end of the tube 1. On the other hand, in the single tube of the comparative example, a remarkable change is seen in the temperature distribution.
- FIG. 8 is a longitudinal sectional view of an embodiment in which the direct heating tube of the present invention is applied to a column for cryotrap of gasket matogram.
- Tube 1 the first heating tube 2 has a total length of 100 mm, the inner diameter of the first heating tube 2 is l mm, the wall thickness is 0.05 mm, and the height from both ends of the first heating tube 2 is 0.9 5 mm thin-plate annular flanges 4 and 4 are formed, and a second heating tube 3 is installed concentrically with the first heating tube 2 from the flange 4, and each of the second heating tubes 3 has a length of 30. mm, inner diameter 3 mm, wall thickness 0.05 mm.
- the electrode section 6 is formed by connecting the conducting wire 6 1 to the electrode plate 6 2, passing the second heating tube 3 through the electrode plate 62, and holding and fixing the same with the double nut 63, and is 20 mm from the flange 4. It was installed at the position.
- the material of the first heating tube 2, the second heating tube 3, and the flange 4 is stainless steel. It should be noted that an intermediate space 40 having a cooling medium inlet 42 and an outlet 41 similar to the conventional cooling mechanism is provided between the double nuts 63, 63, and covers the pipe 1.
- FIG. 9 is a longitudinal sectional view of an embodiment in which the direct heating tube of the present invention is applied to a connection portion between a column end of a gas chromatogram and a detector 5 (here, FID).
- a heat pipe having a total length of 60 mm was used as the pipe 1, flanges 4 and 4 were provided at both ends of a first heating pipe 2 having a total length of 60 mm and an outer diameter of 1.6 mm,
- a second heating tube 3, 3 having a total length of 24 mm was provided toward the center of the first heating tube 2.
- the material of the first heating tube 2 and the second heating tube 3 is stainless steel.
- a thin annular flange 4 with a width of 0.8 mm is used, but the connection between the first heating pipe 2 and the second heating pipe 3 on the column side is as follows:
- Stainless steel as flange 4 The column connection port 49 made of stainless steel is used.
- the electrode portion 6 on the FID 5 side connects the conducting wire 61 to an electrode plate 62 having a hole through which the second heating tube 3 can pass, and passes the second heating tube 3 through the electrode plate 62.
- the electrode plate 62 is fixed to the FID with a bolt 59 via an insulator 68, and the electrode part 6 on one side of the gas chromatography connects the conducting wire 61 to the electrode plate 62, and the second electrode plate 62
- the heating tube 3 was passed through, and it was configured to be clamped and fixed with a double nut 63. Electrodes 6, 6 were installed at a position 16 mm from flange 4. By applying tube 1 to the connection between the end of the column and the detector 5, it becomes possible to use an o-ring 51 at the connection between the tube 1, that is, the connection between the heat pipe and the detector. The effect of heat on the gas chromatogram oven (not shown) and the FID collector part 52 can be significantly reduced. (Example 4)
- FIG. 10 is a longitudinal sectional view of an embodiment in which the direct heating tube of the present invention is applied to a transfer line for G CZMS.
- the tube 1 or the first heating tube 2 as the transfer line for G CZM S generally has a total length of 150 mm to 300 mm, and the second heating tube 3 has a total length of 5 Omm to 100 mm.
- the first heating tube 2 has a total diameter of 150 mm, an outer diameter of 1.6 mm, a wall thickness of 0.15 mm, and flanges 4, 4 at both ends of the first heating tube 2.
- a second heating pipe 3, 3 having a total length of 70 mm, an outer diameter of 3.2 mm, and a wall thickness of 0.15 mm is extended from the outer peripheral end of the flange 4, 4 toward the center of the first heating pipe 2.
- the material of the first heating tube 2 and the second heating tube 3 is stainless steel.
- Ionization source connection port 4 A thin plate-shaped flange 4 is used for the flange 4 on the 8 side, but the first heating tube on the column side
- the connection between the second heating pipe 3 and the second heating pipe 3 uses a column connection port 49 made of stainless steel as the flange 4.
- the second heating tube 3 is welded to the column connection port 49 by laser welding or the like, and the first heating tube 2 is similarly welded to the outside thereof.
- a method can be adopted.
- the electrode section 6 is configured by connecting the conducting wire 61 to the electrode plate 62, passing the second heating tube 3 through the electrode plate 62, and holding and fixing the same with the double nut 63.
- Tube 1 Installed at the center end.
- a cylindrical insulator 44 was sandwiched between the electrodes 6 to increase structural strength.
- it is equipped with an ionization source connection port 48, a vacuum holding flange 45, a temperature sensor 97, etc., like the transfer line for ordinary GC / MS.
- the tube 1 having a double structure of the present invention is not limited to the direct heating tube of the above embodiment, but may be used for heating various columns, heat pipes, etc. Including various necessary direct heating tubes, the numerical value is not limited to the numerical value of each embodiment, and various numerical values can be adopted.
- INDUSTRIAL APPLICABILITY As described above, the present invention is applied to a column heated in a gas chromatograph, a heating tube of a sample inlet of a gas chromatograph, and an analytical column in a gas chromatograph mass spectrometer (GC ZMS) to an ionization chamber.
- GC ZMS gas chromatograph mass spectrometer
- a heat pipe for keeping the column to which the sample is introduced warm, a heated tube used to introduce the sample from the gas chromatograph column to a detector such as a flame ionization detector (FID), etc. It is useful as a direct heating tube for heating a fluid by passing a direct current or an alternating current to the tube when the fluid is passed, thereby heating the tube.
- FID flame ionization detector
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04710997.0A EP1719958B1 (en) | 2004-02-13 | 2004-02-13 | Direct heating tube and method of heating fluid using the same |
PCT/JP2004/001564 WO2005078354A1 (ja) | 2004-02-13 | 2004-02-13 | 直接加熱管及び該管を用いた流体の加熱方法 |
JP2005517850A JP4430623B2 (ja) | 2004-02-13 | 2004-02-13 | 直接加熱管及び該管を用いた流体の加熱方法 |
US10/597,953 US8180203B2 (en) | 2004-02-13 | 2004-02-13 | Direct heating tube and method of heating fluid using same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/001564 WO2005078354A1 (ja) | 2004-02-13 | 2004-02-13 | 直接加熱管及び該管を用いた流体の加熱方法 |
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WO2005078354A1 true WO2005078354A1 (ja) | 2005-08-25 |
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PCT/JP2004/001564 WO2005078354A1 (ja) | 2004-02-13 | 2004-02-13 | 直接加熱管及び該管を用いた流体の加熱方法 |
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US (1) | US8180203B2 (ja) |
EP (1) | EP1719958B1 (ja) |
JP (1) | JP4430623B2 (ja) |
WO (1) | WO2005078354A1 (ja) |
Cited By (1)
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CN104869673A (zh) * | 2015-06-10 | 2015-08-26 | 海安县维旺电热器材厂 | 新型电热管结构 |
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JP5644187B2 (ja) | 2010-05-31 | 2014-12-24 | 株式会社島津製作所 | カラムオーブン |
US9671180B2 (en) | 2013-03-14 | 2017-06-06 | Rosemount Analytical, Inc | Process analytic device with improved thermal stability |
US9228983B2 (en) * | 2013-03-14 | 2016-01-05 | Rosemount Analytical Inc. | Process analytic device with improved thermal stability |
CA2940429A1 (en) | 2014-03-17 | 2015-09-24 | Prism Analytical Technologies, Inc. | Process and system for rapid sample analysis |
JP6462710B2 (ja) * | 2014-10-17 | 2019-01-30 | 株式会社堀場製作所 | ガス分析装置 |
US20210172650A1 (en) * | 2015-02-05 | 2021-06-10 | Giorgio TORCHIO | Capillary Proximity Heater |
AU2015381215B2 (en) * | 2015-02-05 | 2021-05-13 | Silvio BELLINVIA | Capillary proximity heater with high energy saving equipped upstream of a microfiltration apparatus for the elimination of calcareuos particles present in fluids and downstream of a nozzle or closed circuit |
GB2548596A (en) * | 2016-03-22 | 2017-09-27 | Micromass Ltd | An interface probe |
NL2029045B1 (en) | 2021-08-25 | 2023-03-15 | Gl Sciences B V | Heating assembly for a chromatography system |
CN115002947B (zh) * | 2022-08-04 | 2022-11-04 | 西安交通大学 | 一种空天飞机热环境模拟用模块化加热装置及方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132500A (en) * | 1979-04-04 | 1980-10-15 | Showa Denki Kogyo Kk | Pipe transport of crude oil |
JPS60198457A (ja) * | 1984-02-21 | 1985-10-07 | Yokogawa Hewlett Packard Ltd | 加熱気体移送管 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1583180A (ja) | 1966-11-25 | 1969-10-24 | ||
GB1482464A (en) | 1974-03-20 | 1977-08-10 | Boc International Ltd | Electric resistance heaters |
US4661684A (en) * | 1978-10-16 | 1987-04-28 | Sellers William W | Asphalt heating system |
NO172311C (no) * | 1987-09-21 | 1993-06-30 | Chubu Electric Power | Varmtvannsbereder |
DE3810624A1 (de) | 1988-03-29 | 1989-10-19 | Philips Patentverwaltung | Durchlauferhitzer |
US4974551A (en) * | 1989-02-16 | 1990-12-04 | Nelson Thomas E | Water heater and method of fabricating same |
US5096471A (en) | 1990-09-28 | 1992-03-17 | The Regents Of The University Of Michigan | Gas chromatography system and methods |
US5271086A (en) * | 1991-01-24 | 1993-12-14 | Asahi Glass Company Ltd. | Quartz glass tube liquid heating apparatus with concentric flow paths |
DE4226767C1 (en) | 1992-04-10 | 1993-09-23 | Tuerk & Hillinger Gmbh, 78532 Tuttlingen, De | Mfg electric through-flow water heater - profiling flow pipe before insertion in extruded metal profile incorporating electric heating elements for improved heat transfer |
JP2800621B2 (ja) | 1993-01-22 | 1998-09-21 | 株式会社島津製作所 | ガスクロマトグラフ装置 |
US5563352A (en) * | 1995-01-06 | 1996-10-08 | University Corporation For Atmospheric Research | Gas concentration and injection system for chromatographic analysis of organic trace gases |
WO1998007505A1 (en) * | 1996-08-21 | 1998-02-26 | Sheehan Edward W | Method and apparatus for improved electrospray analysis |
-
2004
- 2004-02-13 JP JP2005517850A patent/JP4430623B2/ja not_active Expired - Lifetime
- 2004-02-13 WO PCT/JP2004/001564 patent/WO2005078354A1/ja active Application Filing
- 2004-02-13 EP EP04710997.0A patent/EP1719958B1/en not_active Expired - Lifetime
- 2004-02-13 US US10/597,953 patent/US8180203B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132500A (en) * | 1979-04-04 | 1980-10-15 | Showa Denki Kogyo Kk | Pipe transport of crude oil |
JPS60198457A (ja) * | 1984-02-21 | 1985-10-07 | Yokogawa Hewlett Packard Ltd | 加熱気体移送管 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1719958A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104869673A (zh) * | 2015-06-10 | 2015-08-26 | 海安县维旺电热器材厂 | 新型电热管结构 |
Also Published As
Publication number | Publication date |
---|---|
EP1719958A4 (en) | 2011-03-30 |
JPWO2005078354A1 (ja) | 2007-08-30 |
US8180203B2 (en) | 2012-05-15 |
US20070107675A1 (en) | 2007-05-17 |
JP4430623B2 (ja) | 2010-03-10 |
EP1719958B1 (en) | 2016-04-20 |
EP1719958A1 (en) | 2006-11-08 |
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