Portable high-temperature sampling device

Abstract

The utility model relates to a portable high-temperature sampling device, and relates to the field of chemical engineering sampling technology, the portable high-temperature sampling device comprises a box body, a sampling steel cylinder is fixedly installed in the box body, two ends of the sampling steel cylinder are respectively communicated with a first connecting pipe and a second connecting pipe, and pipe orifices of the first connecting pipe and the second connecting pipe extend out of the box body; a first connector and a second connector are fixedly mounted at pipe orifices of the first connecting pipe and the second connecting pipe respectively, and a first valve and a second valve are mounted on the first connecting pipe and the second connecting pipe respectively; a heater is fixedly installed in the box body, a heating cavity is formed in the heater, and the sampling steel cylinder, the first valve and the second valve are all located in the heating cavity; a temperature controller and a thermometer are installed in the box body, the sensing end of the thermometer extends into the steel cylinder, the signal input end of the temperature controller is in signal connection with the thermometer, and the signal output end of the temperature controller is in signal connection with the signal input end of the heater. The method can provide guarantee for the accuracy of all-component sample process analysis.

Description

Technical Field

[0001] The present application relates to the field of chemical sampling technology, and particularly to a portable high-temperature sampling device. Background Art

[0002] In the development of chemical products and the actual production process of chemicals, it is often necessary to use a sampling device to sample chemical products. By analyzing the samples, the monitoring of the reaction process can be realized according to the specific analysis data, which is convenient for timely obtaining detailed product conditions, so as to appropriately add raw materials or adjust the corresponding production conditions.

[0003] In the prior art, according to the type of the state of the collected sample, process sampling analysis usually has three methods: liquid phase, gas phase, and whole components. Common sampling devices mainly include steel cylinders. The two ends of the steel cylinder are respectively installed with a feed connection head and a discharge connection head through connecting pipes, and a feed valve and a discharge valve are respectively installed on the two connecting pipes. During sampling, the sampling personnel carry the sampling device to the sampling point, connect the feed connection head to the sampling port of the sampling point, connect the discharge connection head to the low-pressure point at the back end of the system at the sampling point, open the feed connection head, so that the material enters the steel cylinder through the feed connection head and the connecting pipe, and at the same time keep the discharge valve open, so that the sample flows for a period of time and then the sampling personnel close the feed valve and the discharge valve. When the sampling personnel carry the sampling device to the analysis room, the sample in the steel cylinder can be discharged through the discharge connection head and the discharge valve.

[0004] However, at present, liquid-phase sampling and gas-phase sampling are relatively common. For whole-component sampling, due to the influence of temperature and pressure, the gas-liquid phase is easily separated after sampling. To ensure the accuracy of analysis, the present utility model provides a high-temperature sampling device with heating, which keeps the whole gas phase after whole-component sampling and has relatively high accuracy during detection and analysis. Summary of the Utility Model

[0005] In order to ensure the accuracy of process analysis of whole-component samples, the present application provides a portable high-temperature sampling device.

[0006] The portable high-temperature sampling device provided by the present application adopts the following technical solutions:

[0007] A portable high-temperature sampling device includes a box body. A sampling steel cylinder is fixedly installed in the box body. The two ends of the sampling steel cylinder are respectively communicated with a first connecting pipe and a second connecting pipe. The pipe orifices of the first connecting pipe and the second connecting pipe extend outside the box body, and a first connecting head and a second connecting head are respectively fixedly installed at the pipe orifices of the first connecting pipe and the second connecting pipe. A first valve and a second valve are respectively installed on the first connecting pipe and the second connecting pipe;

[0008] A heater is fixedly installed inside the box body. A heating cavity is formed inside the heater. The sampling cylinder, the first valve, and the second valve are all located inside the heating cavity;

[0009] A thermostat and a thermometer are fixedly installed inside the box body. The sensing end of the thermometer extends into the cylinder. The signal input end of the thermostat is signal-connected to the signal output end of the thermometer. The signal output end of the thermostat is signal-connected to the signal input end of the heater.

[0010] By adopting the above technical solution, before sampling, the sampler can heat the sampling cylinder to the required temperature through the heater, thermostat, and thermometer according to the physical properties of the material to be sampled; during the actual sampling process, the sampler can carry the box body to the sampling location, connect it to the sampling port at the sampling location through the first connector, connect the second connector to the low-pressure point at the back end of the system, and at the same time open the first valve and the second valve, so that the whole-component reaction material flows in the sampling cylinder for a period of time, and then the sampler closes the first valve and the second valve; when the sampler transfers the sampling device to the analysis room, the sampler can open the second connecting pipe through the second valve, so that the material in the sampling cylinder flows out through the sampling cylinder. Since the sampling cylinder remains at a high temperature, the situation where the material state changes due to temperature and pressure changes can be reduced, ensuring the accuracy of subsequent analysis data.

[0011] Preferably, a heat-insulating layer is fixedly installed inside the box body. A heat-insulating cavity is formed inside the heat-insulating layer. The heater is located inside the heat-insulating cavity.

[0012] By adopting the above technical solution, the heat-insulating layer can reduce the temperature change of the material in the sampling cylinder during the transfer process, and can further ensure the accuracy of subsequent analysis data.

[0013] Preferably, the heat-insulating layer includes an aerogel heat-insulating and heat-preserving board.

[0014] By adopting the above technical solution, the aerogel heat-insulating and heat-preserving board can achieve good heat-insulating and heat-preserving effects.

[0015] Preferably, a handle is fixedly installed on the top of the box body.

[0016] By adopting the above technical solution, the handle can facilitate the sampler to transfer the sampling device.

[0017] Preferably, both the first valve and the second valve are high-temperature needle valves.

[0018] By adopting the above technical solution, the high-temperature needle valve has the advantages of high temperature resistance and stability, and can be adapted to the control of high-temperature material flow.

[0019] Preferably, a nitrogen replacement detection mechanism is fixedly installed inside the box body, and the nitrogen replacement detection mechanism includes:

[0020] A nitrogen concentration sensor, fixedly installed inside the box body, with the sensing end extending into the sampling steel cylinder, for detecting the nitrogen concentration in the sampling steel cylinder and outputting a nitrogen concentration signal;

[0021] A single-chip microcomputer, signal-connected to the signal output end of the nitrogen concentration sensor, for receiving the nitrogen concentration signal and outputting a prompt signal when the nitrogen concentration balance reaches a set duration;

[0022] A warning lamp, fixedly installed on the top of the box body, signal-connected to the signal input end of the single-chip microcomputer, for receiving the prompt signal and emitting light.

[0023] By adopting the above technical solution, before taking the sampling device, the sampling personnel can connect the first connector to the nitrogen pipeline, connect the second connector to the tail gas treatment system in the analysis room, open the first valve and the second valve, and perform nitrogen replacement on the sampling steel cylinder. Through the mutual cooperation and use of the nitrogen concentration sensor, the single-chip microcomputer and the warning lamp, when the nitrogen concentration in the sampling bottle reaches the set concentration value and lasts for a certain period of time, the warning lamp emits light to prompt the sampling personnel that the nitrogen replacement is completed and the air in the sampling steel cylinder is completely discharged, which can improve the convenience of the sampling personnel for nitrogen replacement of the sampling steel cylinder.

[0024] Preferably, a flow sensor is installed on the second connecting pipe, and a display is fixedly installed on the outer side wall of the box body. The signal output end of the flow sensor is signal-connected to the signal input end of the display.

[0025] By adopting the above technical solution, during the sampling process, the sampling personnel need to keep the material flowing in the sampling steel cylinder. When the outflow amount of the material reaches the set amount, the sampling personnel close the first valve and the second valve to reduce the adverse impact of material unevenness on subsequent data analysis. Through the mutual cooperation and use of the flow sensor and the display, it is convenient for the sampling personnel to grasp the timing of closing the first valve and the second valve.

[0026] In summary, the portable high-temperature sampling device of the present application has at least one of the following beneficial technical effects:

[0027] 1. Before sampling, the sampler can heat the sampling cylinder to the required temperature through a heater, a thermostat, and a thermometer according to the physical properties of the material to be sampled; during the actual sampling process, the sampler can carry the box body to the sampling location, connect it to the sampling port at the sampling location through the first connector, connect the second connector to the low-pressure point at the rear end of the system, and simultaneously open the first valve and the second valve, so that the whole-component reaction material flows in the sampling cylinder for a period of time, and then the sampler closes the first valve and the second valve; when the sampler transfers the sampling device to the analysis room, the sampler can open the second connecting pipe through the second valve, so that the material in the sampling cylinder flows out through the sampling cylinder. Since the sampling cylinder remains at a high temperature, the situation where the material state changes due to temperature and pressure changes can be reduced, ensuring the accuracy of subsequent analysis data;

[0028] 2. The heat-insulating layer can reduce the temperature change of the material in the sampling cylinder during the transfer process, and can further ensure the accuracy of subsequent analysis data. Description of the Drawings

[0029] Figure 1 is a schematic diagram showing the overall structure of the sampling device in an embodiment of the present application.

[0030] Figure 2 is a schematic diagram showing the installation position of the temperature sensor in an embodiment of the present application.

[0031] Description of the reference numerals: 1, box body; 2, sampling cylinder; 21, first connecting pipe; 22, second connecting pipe; 23, first connector; 24, second connector; 25, first valve; 26, second valve; 3, heater; 31, heating cavity; 4, thermostat; 5, thermometer; 6, heat-insulating layer; 7, handle. Detailed Description of the Embodiment

[0032] The following will be further described in detail with reference to the attached Figure 1-2 of the present application.

[0033] Embodiment 1

[0034] An embodiment of the present application discloses a portable high-temperature sampling device. Refer to Figure 1 and Figure 2 , including a box body 1, in which a sampling cylinder 2 is fixedly installed, and the volume of the sampling cylinder 2 can be set within 20 - 1000 ml according to requirements.

[0035] At both ends of the sampling cylinder 2, a first connecting pipe 21 and a second connecting pipe 22 are respectively connected and arranged. The pipe orifices of the first connecting pipe 21 and the second connecting pipe 22 both extend outside the box body 1, and a first connector 23 and a second connector 24 are respectively fixedly installed at the pipe orifices of the first connecting pipe 21 and the second connecting pipe 22. A first valve 25 and a second valve 26 are respectively installed on the first connecting pipe 21 and the second connecting pipe 22.

[0036] A heater 3 is fixedly installed inside the box body 1. A heating cavity 31 is formed inside the heater 3. The sampling cylinder 2, the first valve 25, and the second valve 26 are all located inside the heating cavity 31. A temperature controller 4 and a thermometer 5 are fixedly installed inside the box body 1. The sensing end of the thermometer 5 extends into the cylinder. The signal input end of the temperature controller 4 is in signal connection with the signal output end of the thermometer 5, and the signal output end of the temperature controller 4 is in signal connection with the signal input end of the heater 3.

[0037] Before sampling, the sampling personnel can heat the sampling cylinder 2 to the required temperature through the heater 3, the temperature controller 4, and the thermometer 5 according to the physical properties of the material to be sampled. During the actual sampling process, the sampling personnel can carry the box body 1 to the sampling location, connect the first connector 23 to the sampling port at the sampling location, connect the second connector 24 to the low-pressure point at the back end of the system, and at the same time open the first valve 25 and the second valve 26. After the whole-component reaction material flows in the sampling cylinder 2 for a period of time, the sampling personnel close the first valve 25 and the second valve 26.

[0038] When the sampling personnel transfer the sampling device to the analysis room, the sampling personnel can open the second connecting pipe 22 through the second valve 26, so that the material in the sampling cylinder 2 flows out through the sampling cylinder 2. Since the sampling cylinder 2 remains at a high temperature, the situation where the state of the material changes due to temperature and pressure changes can be reduced, ensuring the accuracy of subsequent analysis data.

[0039] Among them, the first connector 23 and the second connector 24 can be of various types, which can be flange, thread, ferrule connection, or a quick connector with self-locking. The connecting joints can also be of different specifications, which can be 1 / 8”, 3mm, 1 / 4”, 6mm, 3 / 8”, 8mm, 10mm, 1 / 2”. The material can also be selected as stainless steel 316L, titanium material, nickel alloy, Hastelloy, zirconium material, etc. according to the process requirements.

[0040] For example, for the comprehensive component analysis of the reaction products of acrolein oxidation to acrylic acid, since the boiling point of acrylic acid is 141°C, usually the sampler can only collect liquid-phase or gas-phase samples. To achieve comprehensive component sampling, first place the high-temperature sampling device in the analysis room. Then use the temperature controller 4 to heat the sampling cylinder 2 to 250°C and maintain it for 5 minutes. Disconnect the heating power supply, disconnect the first connecting pipe 21 and the second connecting pipe 22 through the first valve 25 and the second valve 26. Bring the sampler to the sampling site, connect the first connector 23 to the connector of the sampling port at the sampling point, connect the second connector 24 to the low-pressure point at the rear end of the system. Open the first valve 25 and the second valve 26 to allow the material to flow in the sampling cylinder 2 for a period of time, then close the second valve 26 of the sampling bottle, and then close the first valve 25. Disconnect the first connector 23 and the second connector 24, remove the portable high-temperature sampling device, bring it back to the analysis room, reconnect the power supply, heat the sampling device to 25°C, and then the material in the sampling cylinder 2 can be sampled and analyzed by chromatography.

[0041] Refer to Figure 1 , a heat preservation layer 6 is fixedly installed in the box body 1, a heat preservation cavity is formed in the heat preservation layer 6, and the heater 3 is located in the heat preservation cavity. The heat preservation layer 6 can reduce the temperature change of the material in the sampling cylinder 2 during the transfer process, and can further ensure the accuracy of subsequent analysis data.

[0042] In the embodiment of the present application, the heat preservation layer 6 is preferably made of an aerogel heat insulation board. The aerogel heat insulation board can achieve good heat insulation effect. In some other embodiments, it can be replaced according to the need of heat preservation effect, which is not limited here.

[0043] Refer to Figure 1 , a handle 7 is fixedly installed on the top of the box body 1 by welding. The handle 7 can facilitate the sampler to transfer the sampling device.

[0044] In the embodiment of the present application, both the first valve 25 and the second valve 26 are preferably high-temperature needle valves. The high-temperature needle valve has the advantages of high temperature resistance and stability, and can be adapted to the control of high-temperature material flow.

[0045] The implementation principle of a portable high-temperature sampling device according to an embodiment of the present application is as follows: Before sampling, the sampling personnel can heat the sampling cylinder 2 to the required temperature through the heater 3, the temperature controller 4, and the thermometer 5 according to the physical properties of the material to be collected; during the actual sampling process, the sampling personnel can carry the box body 1 to the sampling location, connect it to the sampling port at the sampling location through the first connector 23, connect the second connector 24 to the low-pressure point at the back end of the system, and at the same time open the first valve 25 and the second valve 26, so that the whole-component reaction material flows in the sampling cylinder 2 for a period of time, and then the sampling personnel close the first valve 25 and the second valve 26; when the sampling personnel transfer the sampling device to the analysis room, the sampling personnel can open the second connecting pipe 22 through the second valve 26, so that the material in the sampling cylinder 2 flows out through the sampling cylinder 2. Since the temperature in the sampling cylinder 2 is kept high, the situation where the state of the material changes due to temperature and pressure changes can be reduced, ensuring the accuracy of subsequent analysis data.

[0046] Embodiment 2

[0047] In an embodiment of the present application, a nitrogen replacement detection mechanism is fixedly installed in the box body 1. The nitrogen replacement detection mechanism includes: a nitrogen concentration sensor fixedly installed in the box body 1, with the sensing end extending into the sampling cylinder 2, for detecting the nitrogen concentration in the sampling cylinder 2 and outputting a nitrogen concentration signal; a single-chip microcomputer, signal-connected to the signal output end of the nitrogen concentration sensor, for receiving the nitrogen concentration signal and outputting a prompt signal when the nitrogen concentration balance reaches a set duration; a prompt lamp fixedly installed on the top of the box body 1, signal-connected to the signal input end of the single-chip microcomputer, for receiving the prompt signal and emitting light.

[0048] Before using the sampling device, the sampling personnel can connect the first connector 23 to the nitrogen pipeline, connect the second connector 24 to the tail gas treatment system in the analysis room, open the first valve 25 and the second valve 26, and perform nitrogen replacement on the sampling cylinder 2. Through the mutual cooperation and use of the nitrogen concentration sensor, the single-chip microcomputer, and the prompt lamp, when the nitrogen concentration in the sampling bottle reaches the set concentration value and lasts for a certain period of time, the prompt lamp emits light to prompt the sampling personnel that the nitrogen replacement is completed and the air in the sampling cylinder 2 is completely discharged, which can improve the convenience of the sampling personnel for nitrogen replacement of the sampling cylinder 2.

[0049] According to actual usage needs, the number of nitrogen replacement times can be increased or decreased, which will not be limited and elaborated here.

[0050] Embodiment 3

[0051] In an embodiment of the present application, a flow sensor is installed on the second connecting pipe 22, and a display is fixedly installed on the outer side wall of the box body 1. The signal output end of the flow sensor is signal-connected to the signal input end of the display.

[0052] During the sampling process, the sampling personnel need to keep the material flowing in the sampling cylinder 2. When the outflow of the material reaches the set amount, the sampling personnel close the first valve 25 and the second valve 26 to reduce the adverse impact of material non-uniformity on subsequent data analysis. By using the flow sensor and the display in combination, it is convenient for the sampling personnel to grasp the timing of closing the first valve 25 and the second valve 26.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A portable high temperature sampling device, characterized in that: The invention comprises a box body (1), wherein a sampling steel cylinder (2) is fixedly installed in the box body (1), and a first connecting pipe (21) and a second connecting pipe (22) are respectively connected at both ends of the sampling steel cylinder (2), and the pipe openings of the first connecting pipe (21) and the second connecting pipe (22) both extend outside the box body (1), and a first connecting head (23) and a second connecting head (24) are respectively fixedly installed at the pipe openings of the first connecting pipe (21) and the second connecting pipe (22), and a first valve (25) and a second valve (26) are respectively installed on the first connecting pipe (21) and the second connecting pipe (22); A heater (3) is fixedly installed in the box (1), a heating chamber (31) is formed in the heater (3), and the sampling cylinder (2), the first valve (25), and the second valve (26) are all located in the heating chamber (31); A temperature controller (4) and a thermometer (5) are fixedly installed in the box (1); the sensing end of the thermometer (5) extends into the steel cylinder; the signal input end of the temperature controller (4) is signal-connected to the signal output end of the thermometer (5); and the signal output end of the temperature controller (4) is signal-connected to the signal input end of the heater (3).

2. A portable high temperature sampling device according to claim 1, characterized in that: A heat-insulating layer (6) is fixedly installed in the box body (1), a heat-insulating cavity is formed in the heat-insulating layer (6), and the heater (3) is located in the heat-insulating cavity.

3. A portable high temperature sampling device according to claim 2, characterized in that: The thermal insulation layer (6) comprises an aerogel thermal insulation board.

4. A portable high temperature sampling device according to claim 1, characterized in that: A handle (7) is fixedly mounted on the top of the box body (1).

5. A portable high temperature sampling device according to claim 1, characterized in that: The first valve (25) and the second valve (26) are both high-temperature needle valves.

6. A portable high temperature sampling device according to claim 1, characterized in that: A nitrogen replacement detection mechanism is fixedly installed in the box (1), and the nitrogen replacement detection mechanism comprises: A nitrogen concentration sensor is fixedly installed in the box (1), with a sensing end extending into the sampling cylinder (2), and is used to detect the nitrogen concentration in the sampling cylinder (2) and output a nitrogen concentration signal; A single chip microcomputer is connected to the signal output terminal of the nitrogen concentration sensor, and is used to receive the nitrogen concentration signal and output a prompt signal when the nitrogen concentration reaches a set time. A warning light is fixedly mounted on the top of the box (1), is signal-connected to the signal input terminal of the single-chip computer, and is used to receive the warning signal and emit light.

7. A portable high temperature sampling device according to claim 1, characterized in that: A flow sensor is installed on the second connecting pipe (22), a display is fixedly installed on the outer wall of the box (1), and the signal output end of the flow sensor is signal-connected to the signal input end of the display.

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