Smoke concentration detection device for low-concentration smoke dust

Abstract

The utility model discloses a low-concentration smoke dust and smoke concentration detection device which comprises a sensor probe, a control line and a closed protection device, as the closed protection device is arranged at the bottom of the sensor probe, when the sensor probe executes acquisition work, the electric push rod pushes the top cover to rise, the top cover lifts the movable door plate away from the airflow port, and smoke can circulate in the protection sleeve through the airflow port; when the sensor probe is in a standby state, the electric push rod drives the top cover to descend to seal the top of the protective sleeve, and in the process, the top cover drives the movable door plate to move downwards to seal the airflow opening, so that the interior of the protective sleeve is sealed, and the smoke concentration is detected. The sensor probe is prevented from being exposed in high-temperature flue gas for a long time, so that the influence of the high-temperature flue gas on the sensor probe is reduced, and the service life of the sensor probe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke and dust detection, in particular to a low-concentration smoke and dust and flue gas concentration detection device. Background Technique

[0002] A smoke and dust concentration sensor is a device for continuously or intermittently monitoring the smoke and dust concentration in flue gas exhaust, which can detect the smoke and dust concentration discharged from a workshop, and judge whether it meets the emission standard through the detected data.

[0003] The existing patent application number: CN202320484098.7, a smoke and dust concentration detection device, includes a detection box body, a support base, a suction hose and an adjusting rod. Suction pumps are installed and connected at both the left and right ends of the detection box body, and the air inlet of the suction pump is connected with a connecting pipe head. The lower end of the support base is fixedly connected with support legs. For this smoke and dust concentration detection device, after the smoke and dust are detected, it is convenient to clean the impurities on the inner wall of the detection box body in time, so as to facilitate normal use next time and avoid affecting the accuracy of data.

[0004] The above patent records a smoke and dust concentration sensor. In the actual application process, the sensor is installed inside the flue and is in contact with high-temperature flue gas for a long time. Lack of corresponding protection measures, which easily leads to a decrease in the sensitivity of the sensor, thus affecting the detection accuracy. Therefore, we propose a low-concentration smoke and dust and flue gas concentration detection device to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a low-concentration smoke and dust and flue gas concentration detection device to solve the problems raised in the above background technique.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A low-concentration soot and smoke concentration detection device, comprising a sensor probe, a control line, and an enclosed protection device. The bottom of the sensor probe is connected with a control line, and an enclosed protection device is arranged at the bottom of the sensor probe. The enclosed protection device includes a mounting base, a wire hole, a shock pad, a protective sleeve, an air flow port, an electric push rod, a control line, a top cover, and a movable door panel. The bottom of the sensor probe is screwed to the mounting base. A wire hole is provided through the middle of the mounting base. The control line passes through the wire hole and extends below the mounting base. A shock pad is laid on the top surface of the mounting base. A protective sleeve is adhesively installed on the top edge of the mounting base. The sensor probe is located at the center inside the protective sleeve. Air flow ports are symmetrically arranged on the front and rear sides of the protective sleeve. Electric push rods are installed on both the left and right side walls of the protective sleeve. The bottom of the electric push rod is connected with a control line, and the control line passes through the mounting base and extends downward. The top of the telescopic end of the electric push rod is screwed with a top cover. The top cover is located directly above the protective sleeve and can cover the top surface of the protective sleeve. Movable door panels are symmetrically arranged on the front and rear sides of the bottom surface of the top cover. The movable door panels are movably embedded inside the air flow ports.

[0007] Preferably, the maximum stroke distance of the electric push rod is not less than 90% of the height of the air flow port.

[0008] Preferably, the width of the air flow port is at least 80% of the width of the sensor probe, and the height of the air flow port is not less than the height of the sensor probe.

[0009] Preferably, the size specifications of the movable door panel and the air flow port are matched, and when the top cover covers the top surface of the protective sleeve, the movable door panel can completely close the air flow port.

[0010] Preferably, the protective sleeve, the top cover, and the movable door panel are all made of heat-insulating materials.

[0011] Preferably, silicone resin coatings are applied to the inner and outer surfaces of the protective sleeve, the top cover, and the movable door panel.

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

[0013] The utility model is provided with a closed protection device at the bottom of the sensor probe. When the sensor probe performs the acquisition work, the electric push rod pushes the top cover to rise, so that the top cover lifts the movable door panel away from the air flow port, and the flue gas can flow through the air flow port in the protective sleeve, enabling the sensor probe to normally collect the flue gas concentration data and feedback the data to the external detection device, thereby realizing the detection of the flue gas concentration. When the sensor probe is on standby, the electric push rod drives the top cover to descend to seal the top of the protective sleeve. During this process, the top cover will drive the movable door panel to move downward to seal the air flow port, so as to seal the inside of the protective sleeve, avoid the sensor probe being exposed to high-temperature flue gas for a long time, reduce the influence of the high-temperature flue gas on the sensor probe, and extend the service life of the sensor probe. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 For the utility model Figure 1 is a schematic structural diagram after the sensor probe in the utility model is removed;

[0016] Figure 3 is a schematic structural diagram of the protective sleeve of the utility model;

[0017] Figure 4 is a schematic structural diagram of the top cover of the utility model;

[0018] Figure 5 is a schematic diagram of the connection state between the sensor probe and the mounting base in the utility model.

[0019] In the figure: sensor probe - 1, control line a - 2, closed protection device - 3, mounting base - 31, wire hole - 32, shock pad - 33, protective sleeve - 34, air flow port - 35, electric push rod - 36, control line b - 37, top cover - 38, movable door panel - 39. Detailed Description of the Invention

[0020] In order to further explain the technical solution of the utility model, the following is elaborated in detail through specific embodiments.

[0021] Please refer to Figure 1 , the utility model provides a low-concentration dust and flue gas concentration detection device, including a sensor probe 1, a control line a 2, and a closed protection device 3. The bottom of the sensor probe 1 is connected with the control line a 2, and a closed protection device 3 is arranged at the bottom of the sensor probe 1.

[0022] Please refer to Figures 2 - 5, the present utility model provides a low-concentration soot and smoke concentration detection device. The closed protection device 3 includes a mounting base 31, a wire hole 32, a shock pad 33, a protective sleeve 34, an air flow port 35, an electric push rod 36, a control wire b 37, a top cover 38 and a movable door panel 39. The bottom of the sensor probe 1 is screwed to the mounting base 31. A wire hole 32 is provided through the middle of the mounting base 31. The control wire a 2 passes through the wire hole 32 and extends below the mounting base 31. A shock pad 33 is laid on the top surface of the mounting base 31. The shock pad 33 plays a buffering role between the mounting base 31 and the sensor probe 1, making the installation of the sensor probe 1 stable and not easy to shake. A protective sleeve 34 is adhesively installed on the top edge of the mounting base 31. The sensor probe 1 is located at the center inside the protective sleeve 34. Air flow ports 35 are symmetrically arranged on the front and rear sides of the protective sleeve 34. The sensor probe 1 can be in contact with the external flue gas through the air flow ports 35. Electric push rods 36 are installed on both the left and right side walls of the protective sleeve 34. The bottom of the electric push rod 36 is connected to a control wire b 37. The control wire b 37 passes through the mounting base 31 and extends downward. The top of the telescopic end of the electric push rod 36 is screwed with a top cover 38. The top cover 38 is located directly above the protective sleeve 34, and the top cover 38 can be closed to the top surface of the protective sleeve 34, thereby closing the top of the protective sleeve 34. Movable door panels 39 are symmetrically arranged on the front and rear sides of the bottom surface of the top cover 38. The movable door panels 39 are movably embedded inside the air flow ports 35.

[0023] Furthermore, the maximum stroke distance of the electric push rod 36 is not less than 90% of the height of the air flow port 35, ensuring that the air flow port 35 has a large enough opening range to allow the flue gas to flow through the air flow port 35 inside the protective sleeve 34, enabling the sensor probe 1 to normally collect flue gas concentration data.

[0024] Furthermore, the width of the air flow port 35 is at least 80% of the width of the sensor probe 1, and the height of the air flow port 35 is not less than the height of the sensor probe 1, so that the flue gas can flow better through the air flow port 35 inside the protective sleeve 34, enabling the sensor probe 1 to normally carry out data collection work.

[0025] Furthermore, the size specifications of the movable door panel 39 match those of the air flow port 35. When the top cover 38 is closed to the top surface of the protective sleeve 34, the movable door panel 39 can completely close the air flow port 35, thereby closing the inside of the protective sleeve 34 and protecting the sensor probe 1 from the influence of high-temperature flue gas during the standby period.

[0026] Furthermore, the protective sleeve 34, the top cover 38 and the movable door panel 39 are all made of heat-insulating materials, enabling them to better provide heat-insulating protection for the sensor probe 1.

[0027] Further explanation: The inner and outer surfaces of the protective cover 34, the top cover 38, and the movable door panel 39 are all coated with a silicone resin coating. The silicone resin coating has excellent anti-sticking performance, reducing the adhesion of soot on its surface, so as to ensure the detection sensitivity of the sensor probe 1.

[0028] The working principle is as follows:

[0029] First, assemble the sensor probe 1 with the closed protection device 3. First, remove the screw connection between the top cover 38 and the electric push rod 36 and disassemble it. Then, place the sensor probe 1 inside the protective cover 34 and connect it to the top of the mounting base 31 with screws. The control line a2 extends to the lower part of the mounting base 31 through the wire hole 32. Finally, install the top cover 38 back on the top of the telescopic end of the electric push rod 36, thus completing the assembly of the sensor probe 1 and the closed protection device 3.

[0030] Second, embed the mounting base 31 into the inner wall of the flue. During the installation process, the air flow port 35 should be facing the flue direction. Then, pass the control line a2 and the control line b37 out of the flue and connect them to the external detection equipment for centralized control.

[0031] Third, when the external detection equipment controls the sensor probe 1 to perform the acquisition work through the control line a2, it will also start the closed protection device 3 through the control line b37. At this time, the electric push rod 36 pushes the top cover 38 to rise, causing the top cover 38 to lift the movable door panel 39 away from the air flow port 35. At this time, the air flow port 35 is opened, and the flue gas can flow through the air flow port 35 inside the protective cover 34, enabling the sensor probe 1 to normally collect the flue gas concentration data and feedback the data to the external detection equipment, thereby realizing the detection of the flue gas concentration.

[0032] Fourth, when the external detection equipment controls the sensor probe 1 to standby through the control line a2, it will also start the closed protection device 3 through the control line b37. At this time, the electric push rod 36 drives the top cover 38 to descend until the top cover 38 covers the top of the protective cover 34 to seal the top of the protective cover 34. During this process, the top cover 38 will drive the movable door panel 39 to move down to seal the air flow port 35, thereby closing the inside of the protective cover 34, avoiding the sensor probe 1 being exposed to high-temperature flue gas for a long time, reducing the influence of high-temperature flue gas on the sensor probe 1, and extending the service life of the sensor probe 1.

[0033] The above are only the preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-concentration soot and smoke gas concentration detection device, comprising a sensor probe (1) and a control line a (2), wherein the bottom of the sensor probe (1) is connected to the control line a (2); It is characterized in that: It further comprises an enclosed protection device (3). The enclosed protection device (3) is arranged at the bottom of the sensor probe (1). The enclosed protection device (3) includes a mounting base (31), a wire hole (32), a shock pad (33), a protective sleeve (34), an air flow port (35), an electric push rod (36), a control line b (37), a top cover (38) and a movable door panel (39). The bottom of the sensor probe (1) is screwed to the mounting base (31). A wire hole (32) is provided through the middle of the mounting base (31). The control line a (2) passes through the wire hole (32) and extends below the mounting base (31). A shock pad (33) is laid on the top surface of the mounting base (31). A protective sleeve (34) is adhesively mounted on the top edge of the mounting base (31). The sensor probe (1) is located at the center inside the protective sleeve (34). Air flow ports (35) are symmetrically arranged on the front and rear sides of the protective sleeve (34). Electric push rods (36) are mounted on both the left and right side walls of the protective sleeve (34). The bottom of the electric push rod (36) is connected to a control line b (37). The control line b (37) passes through the mounting base (31) and extends downward. The telescopic end of the electric push rod (36) is screwed with a top cover (38). The top cover (38) is located directly above the protective sleeve (34) and can cover the top surface of the protective sleeve (34). Movable door panels (39) are symmetrically arranged on the front and rear sides of the bottom surface of the top cover (38). The movable door panels (39) are movably embedded inside the air flow ports (35).

2. The low-concentration soot and smoke concentration detection device according to claim 1, wherein: The maximum stroke distance of the electric push rod (36) is not less than 90% of the height of the air flow port (35).

3. The low-concentration soot and smoke concentration detection device according to claim 1, characterized in that: The width of the air flow port (35) is at least 80% of the width of the sensor probe (1), and the height of the air flow port (35) is not less than the height of the sensor probe (1).

4. The low-concentration soot and smoke concentration detection device according to claim 1, wherein: The movable door panel (39) matches the size specification of the air flow port (35). When the top cover (38) covers the top surface of the protective sleeve (34), the movable door panel (39) can completely close the air flow port (35).

5. The low-concentration soot and smoke concentration detection device according to claim 1, characterized in that: The protective sleeve (34), the top cover (38) and the movable door panel (39) are all made of heat-insulating materials.

6. The low-concentration soot and smoke gas concentration detection device according to claim 1, wherein: Silicone resin coatings are provided on the inner and outer surfaces of the protective sleeve (34), the top cover (38) and the movable door panel (39).

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