A flame photometric detector

Abstract

The utility model discloses a flame photometric detector contains: combustion chamber, the top of combustion chamber is connected with sample tube and combustion air inlet pipe, and the bottom is connected with waste gas outlet pipe, ignition coil sets up inside the combustion chamber, one end of connecting piece links with one end of combustion chamber, heat -proof light -concentrating module sets up between combustion chamber and connecting piece, the other end of shell links with connecting piece, filter module sets up inside the shell, filter cover is sleeved on the shell, and bottom cover is covered on filter cover, circuit board sets up between filter cover and bottom cover, photomultiplier is fixed on circuit board, and contact with filter module, temperature control module sets up on shell and filter cover. The utility model can effectively control the ambient temperature where photomultiplier is located, guarantee that photomultiplier is not influenced, improve detection precision, guarantee the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to a flame photometric detector, and more particularly to a flame photometric detector. Background Technology

[0002] In industrial production processes, it is necessary to perform "sulfur content detection" on sulfur-containing sample gases. Currently, most detection methods use flame photometric detectors (FPDs). However, existing flame photometric detectors (FPDs) do not effectively control the ambient temperature of the "photomultiplier tube" inside, which reduces the detection accuracy and affects the detection results. Summary of the Invention

[0003] According to an embodiment of the present invention, a flame photometric detector is provided, comprising: The combustion chamber has an inlet pipe and an air intake pipe connected to the top, and an exhaust gas outlet pipe connected to the bottom. Ignition coil, which is located inside the combustion chamber; A connector, one end of which is connected to one end of the combustion chamber; A heat-insulated concentrating module is installed between the combustion chamber and the connector. The housing is connected to the other end of the connector; The filter module is located inside the housing and is used to filter light signals emitted by non-sulfur sources. Filter sleeve, the filter sleeve is fitted onto the housing; The bottom cover is placed on the filter sleeve; The circuit board is positioned between the filter sleeve and the bottom cover. A photomultiplier tube is fixed on a circuit board and in contact with a filter module to detect the light signal filtered by the filter module. The temperature control module is located on the housing and the filter sleeve.

[0004] Furthermore, the heat-insulating and light-concentrating module includes: The first mounting bracket is located between the combustion chamber and the connector; The first heat-insulating glass is disposed between the first mounting bracket and the combustion chamber; A second mounting bracket is disposed between the connector and the first mounting bracket; The second heat-insulating glass is disposed between the second mounting bracket and the connector.

[0005] Furthermore, a first sealing ring is provided at the connection between the first heat-insulating glass and the first mounting bracket and the combustion chamber, and a second sealing ring is provided at the connection between the second heat-insulating glass and the second mounting bracket and the connector.

[0006] Furthermore, a third sealing ring is provided at the connection between the first mounting bracket and the second mounting bracket.

[0007] Furthermore, the filter module includes: The filter tube is located inside the housing, with one end inserted into the connector and the other end in contact with the photomultiplier tube. A filter is placed between the filter tube and the connector.

[0008] Furthermore, a fourth sealing ring is provided at the connection between the filter and the filter tube and connector.

[0009] Furthermore, the temperature control module includes: A cooling space is provided between the filter sleeve and the housing. The inlet pipe connects to the cooling space. The outlet pipe connects to the cooling space. Three mounting holes are provided on the housing; Two heating rods are installed in two mounting holes; The temperature sensor is located in a separate mounting hole.

[0010] Furthermore, it also includes a thermocouple, which is mounted on the combustion chamber to reflect the temperature inside the combustion chamber.

[0011] According to an embodiment of the present invention, a flame photometric detector can effectively control the ambient temperature of the photomultiplier tube, ensuring that the photomultiplier tube is not affected, improving detection accuracy, and ensuring the accuracy of detection results.

[0012] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a flame photometric detector according to an embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional structural schematic diagram of a flame photometric detector according to an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the detection principle structure of a flame photometric detector according to an embodiment of the present invention. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0017] First, combine Figures 1-3 This invention describes a flame photometric detector according to an embodiment of the present invention, used to detect sulfur atoms in sample gas, and has a wide range of applications.

[0018] like Figures 1-3 As shown, a flame photometric detector according to an embodiment of the present invention includes a combustion chamber 100, an ignition coil 200, a connector 300, a heat-insulating focusing module, a housing 500, a filter module, a filter sleeve 700, a bottom cover 800, a circuit board 900, a photomultiplier tube 1000, and a temperature control module.

[0019] Specifically, such as Figures 1-3 As shown, the top of the combustion chamber 100 is connected to a sample inlet pipe 101 and a combustion air inlet pipe 102, and the bottom is connected to an exhaust gas outlet pipe 103. The sample inlet pipe 101 is used to introduce a carrier gas mixed with hydrogen and sample gas into the combustion chamber 100, the combustion air inlet pipe 102 is used for the introduction of combustion air, and the exhaust gas outlet pipe 103 is used for the discharge of exhaust gas.

[0020] Specifically, such as Figure 2 As shown, the ignition coil 200 is disposed inside the combustion chamber 100.

[0021] Specifically, such as Figures 1-2 As shown, one end of the connector 300 is connected to one end of the combustion chamber 100.

[0022] Specifically, such as Figure 2 As shown, the heat-insulating and light-concentrating module is disposed between the combustion chamber 100 and the connector 300. The heat-insulating and light-concentrating module includes: a first mounting bracket 401, a first heat-insulating glass 402, a second mounting bracket 403, and a second heat-insulating glass 404. The first mounting bracket 401 is located between the combustion chamber 100 and the connector 300; the first heat-insulating glass 402 is disposed between the first mounting bracket 401 and the combustion chamber 100; the second mounting bracket 403 is disposed between the connector 300 and the first mounting bracket 401; and the second heat-insulating glass 404 is disposed between the second mounting bracket 403 and the connector 300. The first heat-insulating glass 402 and the second heat-insulating glass 404 serve both heat insulation and light-concentrating functions.

[0023] Specifically, such as Figure 2 As shown, the housing 500 is connected to the other end of the connector 300.

[0024] Specifically, such as Figure 2As shown, the filter module is located inside the housing 500 and is used to filter light signals emitted by non-sulfur sources. The filter module includes a filter tube 601 and a filter 602. The filter tube 601 is located inside the housing 500, with one end inserted into the connector 300 and the other end in contact with the photomultiplier tube 1000; the filter 602 is located between the filter tube 601 and the connector 300 and is used to filter light signals emitted by non-sulfur sources to ensure accurate detection.

[0025] Specifically, such as Figures 1-2 As shown, the filter sleeve 700 is fitted onto the housing 500.

[0026] Specifically, such as Figures 1-2 As shown, the bottom cover 800 is placed on the filter sleeve 700.

[0027] Specifically, such as Figures 1-3 As shown, the circuit board 900 is disposed between the filter sleeve 700 and the bottom cover 800, and is used to provide voltage and receive signals.

[0028] Specifically, such as Figure 2 As shown, the photomultiplier tube 1000 is fixed on the circuit board 900 and is in contact with the filter module to detect the light signal filtered by the filter module.

[0029] Specifically, such as Figure 2 As shown, the temperature control module is mounted on the housing 500 and the filter sleeve 700. The temperature control module includes: a cooling space 1101, an inlet pipe 1102, an outlet pipe 1103, three mounting holes 1104, two heating rods (not shown in the figure), and a temperature sensing rod (not shown in the figure). The cooling space 1101 is located between the filter sleeve 700 and the housing 500; the inlet pipe 1102 communicates with the cooling space 1101; the outlet pipe 1103 communicates with the cooling space 1101; the three mounting holes 1104 are located on the housing 500; the two heating rods are located in two of the mounting holes 1104; and the temperature sensing rod is located in the other mounting hole 1104. Cool air circulates in and out of the cooling space 1101 through the inlet pipe 1102 and the outlet pipe 1103, reducing the temperature at the rear end of the flame photometric detector; the two heating rods control the temperature at the rear end of the flame photometric detector, and the temperature sensing rod reflects the temperature at the rear end of the flame photometric detector.

[0030] Furthermore, such as Figure 2 As shown, a first sealing ring 405 is provided at the connection 300 between the first heat-insulating glass 402 and the first mounting bracket 401 and the combustion chamber 100, and a second sealing ring 406 is provided at the connection 300 between the second heat-insulating glass 404 and the second mounting bracket 403 and the connector 300. The first sealing ring 405 and the second sealing ring 406 are provided for sealing and protecting the first heat-insulating glass 402 and the second heat-insulating glass 404.

[0031] Furthermore, such as Figure 2 As shown, a third sealing ring 407 is provided at the connection 300 between the first mounting bracket 401 and the second mounting bracket 403 for sealing and ensuring airtightness.

[0032] Furthermore, such as Figure 2 As shown, a fourth sealing ring 603 is provided at the connection 300 between the filter 602 and the filter tube 601 and the connector 300, which is used for sealing and protecting the filter 602.

[0033] Furthermore, such as Figure 2 As shown, a flame photometric detector according to an embodiment of the present invention further includes a thermocouple 1200, which is disposed on the combustion chamber 100 and used to detect the temperature inside the combustion chamber 100.

[0034] Working principle: When the carrier gas and the sample gas containing sulfur are sent to the burning hydrogen flame, the high energy of the hydrogen flame activates the sulfur-containing component. When the sulfur atoms in this activated component return to their original state, they emit a spectrum of a specific wavelength. The flame photometric detector uses a photomultiplier tube 1000 to detect the intensity of the emitted light and converts it into a voltage signal. This voltage value represents the sulfur content in the gas being tested.

[0035] Above, refer to Figures 1-3 This invention describes a flame photometric detector according to an embodiment of the present invention, which can effectively control the ambient temperature of the photomultiplier tube 1000, ensure that the photomultiplier tube 1000 is not affected, improve detection accuracy, and ensure the accuracy of detection results.

[0036] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A flame photometric detector, characterized in that, Include: The combustion chamber has an inlet pipe and a combustion air inlet pipe connected to its top, and an exhaust gas outlet pipe connected to its bottom. An ignition coil, wherein the ignition coil is disposed inside the combustion chamber; A connector, one end of which is connected to one end of the combustion chamber; A heat-insulating and light-concentrating module is disposed between the combustion chamber and the connecting member; A housing, which is connected to the other end of the connector; A light filter module, which is disposed inside the housing, is used to filter light signals emitted by non-sulfur sources; A filter sleeve, which is fitted onto the housing; A bottom cover, which is fitted onto the filter sleeve; A circuit board, wherein the circuit board is disposed between the filter sleeve and the bottom cover; A photomultiplier tube, which is fixed on the circuit board and in contact with the filter module, is used to detect the light signal filtered by the filter module. A temperature control module is disposed on the housing and the filter sleeve.

2. The flame photometric detector as described in claim 1, characterized in that, The heat-insulating and light-concentrating module includes: A first mounting bracket is located between the combustion chamber and the connector; A first heat-insulating glass is disposed between the first mounting bracket and the combustion chamber; A second mounting bracket is disposed between the connector and the first mounting bracket; The second heat-insulating glass is disposed between the second mounting bracket and the connector.

3. The flame photometric detector as described in claim 2, characterized in that, A first sealing ring is provided at the connection between the first heat-insulating glass and the first mounting bracket and the combustion chamber, and a second sealing ring is provided at the connection between the second heat-insulating glass and the second mounting bracket and the connector.

4. The flame photometric detector as described in claim 3, characterized in that, A third sealing ring is provided at the connection between the first mounting bracket and the second mounting bracket.

5. The flame photometric detector as described in claim 1, characterized in that, The filter module includes: A filter tube is disposed inside the housing, with one end inserted into the connector and the other end in contact with the photomultiplier tube; A filter is disposed between the filter tube and the connector.

6. The flame photometric detector as described in claim 5, characterized in that, A fourth sealing ring is provided at the connection between the filter, the filter tube, and the connector.

7. The flame photometric detector as described in claim 1, characterized in that, The temperature control module includes: A cooling space is provided between the filter sleeve and the housing; An inlet pipe is connected to the cooling space; An outlet pipe, which is connected to the cooling space; Three mounting holes are provided on the housing; Two heating rods are disposed within the two mounting holes; A temperature sensing rod is disposed in another mounting hole.

8. The flame photometric detector as described in claim 1, characterized in that, It also includes: a thermocouple, which is disposed on the combustion chamber and is used to react to the temperature inside the combustion chamber.

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