Spectroscopic catastrophe gas analyzer

Abstract

The utility model discloses a kind of spectrum catastrophe gas analyzers, it is related to spectral analysis technical field, to solve the current rotating type light cutting piece infrared ray sustained delivery, the technical problem of poor detection effect, including box body and pulse light subassembly, the inside middle place of box body is equipped with built-in frame, and built-in frame both sides are equipped with assembly opening, built-in frame inside bottom end is equipped with airflow subassembly, the airflow subassembly includes the airflow box of being fixed in built-in frame bottom, air window being opened in airflow box upper surface, and air pump being installed in airflow box both ends, the pulse light subassembly includes the sleeve frame of being fixed in built-in frame one side assembly opening, the light cutting piece of being fixed in sleeve frame inside, rotationally installed in the outer ring of sleeve frame outer end opening, and shading strip being fixed in outer ring inside. The utility model has the advantages that intermittent cutting infrared ray is formed Shortwave type delivery, ensure detection.

Description

Technical Field

[0001] This utility model relates to the field of spectral analysis technology, and more specifically, to a spectral catastrophic gas analyzer. Background Technology

[0002] Disaster gas analyzers based on spectral analysis are specialized instruments designed for the rapid detection and analysis of characteristic gases in disaster scenarios (such as fires, coal mine gas outbursts, chemical explosions, tunnel collapses, etc.). Their core function is to accurately identify gas types and quantify concentrations by observing the absorption and emission characteristics of gases to specific spectra, providing crucial data support for disaster emergency rescue, risk warning, and on-site handling.

[0003] Existing devices use a stepper motor to drive a beam cutter, which, in conjunction with an infrared light source, periodically switches the optical path (similar to "chopping") to provide a stable optical signal input for subsequent infrared sensor detection and reduce background light interference. However, the beam cutter's rotation results in poor beam cutting, and the light beam moves with the light-transmitting aperture on the beam cutter, forming a continuous ray that changes position, leading to poor detection performance. Therefore, we propose a spectroscopic catastrophic gas analyzer. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a spectroscopic catastrophic gas analyzer to solve the technical problem of poor detection effect due to the continuous infrared radiation output of the current rotating cutter.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a spectral catastrophic gas analyzer, including a housing and a pulsed light component. An internal frame is installed in the middle of the housing, and mounting ports are provided on both sides of the internal frame. An airflow component is provided at the bottom of the inner side of the internal frame. The airflow component includes an airflow box fixed to the bottom of the internal frame, an air window opened on the upper surface of the airflow box, and air pumps installed at both ends of the airflow box. The pulsed light component includes a sleeve fixed at the mounting port on one side of the internal frame, a light cutter fixed inside the sleeve, an outer ring rotatably installed at the opening at the outer end of the sleeve, and a light-shielding strip fixed inside the outer ring. The light-shielding strip has a cross-shaped design, and a sealing glass is fixed at the gap between the light-shielding strip and the inner wall of the outer ring.

[0006] Preferably, a storage battery is embedded in the bottom of the box, airflow channels are provided through both sides of the bottom of the box, and a connecting cavity is provided in the middle of the airflow channel to connect to the inside of the box, and a drive tooth is provided at the bottom of the inside of the box.

[0007] Preferably, a longitudinal pad is fixed to the inner wall of the box, and the pad seals the connection between the inner frame side opening and the inner wall of the box. The front end of the box is provided with a port, and a sensor device is inserted and fixed at the port.

[0008] Preferably, the air pump is plugged into the communicating cavity, and the air pump inlet is connected to the inside of the airflow channel, and an isolation net is provided at the air window.

[0009] Preferably, a light source assembly is fixed at one end inside the box body. The light source assembly includes a condenser fixed inside the box body, a fixing frame connecting the condenser to the inner wall of the box body, and a light source component installed inside the condenser, the light source component corresponding to a pulse light assembly.

[0010] Preferably, the outer ring has a toothed groove in the outer ring array, and the toothed groove meshes with the driving tooth. The light cutter has a light-transmitting hole in the ring array, and the light-transmitting hole is adapted to the light-shielding strip.

[0011] Preferably, a filter is fixedly installed at the assembly port on the other side of the built-in frame, and the filter corresponds to the sensor device.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a motor and drive gear to rotate the outer ring. By changing the angle of the light-shielding strip, it achieves phased blocking of the infrared light projected into the corresponding light-transmitting hole, so that the infrared light is emitted in short waves. In conjunction with the sensor device, it completes the detection of the gas inside the inner chamber of the built-in frame. The sensor device is equipped with a reference path and a measurement path. The light in the reference path has not been absorbed by the target gas, and its light intensity serves as a reference to offset the interference of external factors such as light source intensity fluctuations and gas chamber contamination. The light in the measurement path has been absorbed by the target gas, and its light intensity is a signal attenuated by the gas, reflecting the concentration information of the target gas. By using short-wave signals in conjunction with dual-path comparison detection, the quality of detection is ensured.

[0014] 2. The assembled structural design of this utility model adopts a box body and an internal frame to form an air chamber. The air pump replaces the gas in the air chamber through the airflow channel, which is convenient for detecting different gases. The sensor device is inserted into the port and then fixed by bolts. The top wiring terminal facilitates wiring and makes assembly convenient. The bottom battery provides power. Through the above structural design, the inside of the box body of this device is divided into corresponding working spaces, which is convenient for maintenance operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the box body of this utility model;

[0018] Figure 4 This is a schematic diagram of the box structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the built-in frame structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the airflow component of this utility model;

[0021] Figure 7 This is a schematic diagram of the pulsed light component of this utility model;

[0022] Figure 8 This is a schematic diagram of the light source component of this utility model.

[0023] The following are the labels in the diagram: 1. Box body; 101. Battery; 102. Airflow channel; 103. Drive gear; 104. Connecting cavity; 105. Port; 106. Gasket; 2. Sensor device; 3. Light source assembly; 301. Fixing frame; 302. Condenser; 303. Light source component; 4. Internal frame; 401. Assembly port; 5. Airflow assembly; 501. Airflow box; 502. Air window; 503. Air pump; 6. Pulse light assembly; 601. Outer ring; 602. Light shield; 603. Gear; 604. Sealed glass; 605. Sleeve; 606. Light cutter; 607. Light passage hole; 7. Filter. Detailed Implementation

[0024] like Figures 1 to 5As shown, this utility model relates to a spectral catastrophic gas analyzer, including a housing 1 and a pulsed light assembly 6. An internal frame 4 is installed in the middle of the housing 1, and mounting openings 401 are provided on both sides of the internal frame 4. An airflow assembly 5 is provided at the bottom inner side of the internal frame 4. The airflow assembly 5 includes an airflow box 501 fixed to the bottom of the internal frame 4, an air window 502 opened on the upper surface of the airflow box 501, and air pumps 503 installed at both ends of the airflow box 501. A battery 101 is embedded in the bottom of the housing 1. Airflow channels 102 are provided through the bottom of the housing 1 on both sides, and a connecting cavity 104 connecting the inside of the housing 1 is opened in the middle of the airflow channel 102. A drive tooth 103 is provided at the bottom inner side of the housing 1. A longitudinal gasket 106 is fixed to the inner wall of the housing 1, and the gasket 106 seals the connection between the side opening of the internal frame 4 and the inner wall of the housing 1. A port 105 is provided at the front end of the housing 1. A sensor device 2 is plugged in and fixed. An air pump 503 is plugged in and installed in the connecting cavity 104. The air pump 503's inlet is connected to the inside of the airflow channel 102. An isolation net is provided at the air window 502. The motor and drive gear 103 drive the outer ring 601 to rotate. By changing the angle of the light-shielding strip 602, the infrared rays projected into the corresponding light-transmitting hole 607 are partially blocked, so that the infrared rays are emitted in short waves. This works with the sensor device 2 to detect the gas inside the air chamber inside the built-in frame 4. The sensor device 2 is equipped with a reference path and a measurement path. The light in the reference path has not been absorbed by the target gas, and its light intensity serves as a reference to offset the interference of external factors such as light source intensity fluctuations and air chamber contamination. The light in the measurement path has been absorbed by the target gas, and its light intensity is a signal attenuated by the gas, reflecting the concentration information of the target gas. By using short-wave signals in conjunction with dual-path comparison detection, the quality of detection is ensured.

[0025] like Figures 4 to 8As shown, this utility model relates to a spectral catastrophic gas analyzer, including a housing 1 and a pulsed light assembly 6. The pulsed light assembly 6 includes a frame 605 fixed at an assembly port 401 on one side of the inner frame 4, a light cutter 606 fixed inside the frame 605, an outer ring 601 rotatably mounted at the outer end opening of the frame 605, and a light-shielding strip 602 fixed inside the outer ring 601. The light-shielding strip 602 has a cross-shaped design, and a sealing glass 604 is fixed at the gap between the light-shielding strip 602 and the inner wall of the outer ring 601. A light source assembly 3 is fixed at one end inside the housing 1. The light source assembly 3 includes a condenser 302 fixed inside the housing 1, a fixing frame 301 connecting the condenser 302 and the inner wall of the housing 1, and a light source element 303 installed inside the condenser 302. The light source element 303 corresponds to the pulsed light assembly 6. The outer ring 605... The outer ring array has a toothed groove 603, which meshes with the drive tooth 103. The light cutter 606 has a ring array with a light-transmitting hole 607, which is adapted to the light-shielding strip 602. A filter 7 is fixedly installed at the assembly port 401 on the other side of the inner frame 4, and the filter 7 corresponds to the sensor device 2. The assembled structure design uses the box 1 and the inner frame 4 to form an air chamber. The air pump 503 replaces the gas in the air chamber through the airflow channel 102, which is convenient for detecting different gases. The sensor device 2 is inserted into the port 105 and then fixed with bolts. The top wiring terminal is convenient for wiring and assembly. The bottom battery 101 provides power. Through the above structural design, the inside of the box 1 of this device is divided into corresponding working spaces, which is convenient for maintenance.

[0026] Working principle: This embodiment provides a spectroscopic gas analyzer. The device is powered by a battery 101. The motor, in conjunction with the drive gear 103 on its output shaft, drives the outer ring 601 to rotate. The outer ring 601 rotates synchronously with the light-shielding strip 602. The light-shielding strip 602 blocks the infrared light projected into the light-transmitting hole 607 in stages, so that the infrared light is emitted in short waves. In conjunction with the sensor device 2, the gas inside the inner chamber of the built-in frame 4 is detected. The box 1 and the built-in frame 4 are separated to form an independent inner chamber. The corresponding air pumps 503 on both sides are started and work with the corresponding airflow channels 102 to replace the gas in the chamber, which facilitates the detection of different gases.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A spectral catastrophic gas analyzer, comprising a housing (1) and a pulsed light assembly (6), characterized in that: An internal frame (4) is installed in the middle of the box (1), and an assembly port (401) is provided on both sides of the internal frame (4). An airflow assembly (5) is provided at the bottom of the inner side of the internal frame (4). The airflow assembly (5) includes an airflow box (501) fixed to the bottom of the internal frame (4), an air window (502) opened on the upper surface of the airflow box (501), and an air pump (503) installed at both ends of the airflow box (501). The pulsed light assembly (6) includes a frame (605) fixed at the mounting port (401) on one side of the built-in frame (4), a light cutter (606) fixed inside the frame (605), an outer ring (601) rotatably installed at the outer end opening of the frame (605), and a light-shielding strip (602) fixed inside the outer ring (601). The light-shielding strip (602) is designed in a cross shape, and a sealing glass (604) is fixed at the gap between the light-shielding strip (602) and the inner wall of the outer ring (601).

2. The spectral catastrophic gas analyzer according to claim 1, characterized in that: The bottom of the box (1) is embedded with a storage battery (101). Both sides of the bottom of the box (1) are provided with airflow channels (102), and the middle of the airflow channels (102) is provided with a connecting cavity (104) that connects to the inside of the box (1). The bottom of the inside of the box (1) is provided with a drive tooth (103).

3. The spectral catastrophic gas analyzer according to claim 2, characterized in that: The inner wall of the box (1) is fixed with a longitudinal pad (106), and the pad (106) seals the connection between the side opening of the inner frame (4) and the inner wall of the box (1). The front end of the box (1) is provided with a port (105), and a sensor device (2) is inserted and fixed at the port (105).

4. The spectral catastrophic gas analyzer according to claim 3, characterized in that: The air pump (503) is plugged into the communicating cavity (104), and the air pump (503) inlet is connected to the airflow channel (102). An isolation net is provided at the air window (502).

5. A spectroscopic catastrophic gas analyzer according to claim 4, characterized in that: The light source assembly (3) is fixed at one end inside the box (1). The light source assembly (3) includes a condenser (302) fixed inside the box (1), a fixing frame (301) connecting the condenser (302) and the inner wall of the box (1), and a light source element (303) installed inside the condenser (302). The light source element (303) corresponds to the pulse light assembly (6).

6. A spectroscopic catastrophic gas analyzer according to claim 5, characterized in that: The outer ring (601) has a ring array of teeth (603) on its outer side, and the teeth (603) mesh with the drive teeth (103). The light cutter (606) has a ring array of light-transmitting holes (607), and the light-transmitting holes (607) are adapted to the light-shielding strip (602).

7. A spectroscopic catastrophic gas analyzer according to claim 6, characterized in that: A filter (7) is fixedly installed at the assembly port (401) on the other side of the built-in frame (4), and the filter (7) corresponds to the sensor device (2).

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