A flame detection device with long service life

Abstract

The utility model discloses a long-life flame detection device, including an outer cylinder, in which a flame sensor is installed; a cooling nitrogen inlet is provided on the side wall of the outer cylinder; the front end of the outer cylinder is closed by a heat shield, and a detection port and a cooling nitrogen outlet are provided on the heat shield; and a height adjustment device for adjusting the height of the outer cylinder is also included. The flame detection device with the above structure is installed separately from the burner and supported by the height adjustment device, so that the height can be set for easy matching. In order to reduce the ambient temperature, the utility model introduces cooling nitrogen to cool the sensor, and the cooling nitrogen is sprayed into the environment after cooling the sensor, which can reduce the ambient temperature and further protect the sensor.

Description

Technical Field

[0001] The utility model relates to a flame detection device, in particular to a flame detection device with a long service life. Background Art

[0002] In the metallurgical industry, flame detection devices are used to detect and monitor the presence and condition of flames. It can identify the characteristics of flames, including the temperature, color, shape and size of flames, through sensors or cameras, and promptly issue alarms or take appropriate measures to ensure safety and prevent fires. Flame detection devices are widely used in the metallurgical industry and can be used to monitor furnace fires, combustion equipment, high-temperature processes, etc. to protect the safety of equipment, personnel and the environment.

[0003] Generally speaking, the flame detection device is installed on the burner nozzle. However, due to the high temperature at the burner nozzle, the existing flame detection device has a short service life and needs to be replaced frequently, which affects production. Utility Model Content

[0004] In view of this, the utility model provides a long-life flame detection device, which can effectively extend the service life.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to adopt a long-life flame detection device, including an outer cylinder, in which a flame sensor is installed; a cooling nitrogen inlet is opened on the side wall of the outer cylinder; the front end of the outer cylinder is closed by a heat shield, and a detection port and a cooling nitrogen outlet are opened on the heat shield; and a height adjustment device for adjusting the height of the outer cylinder is also included.

[0006] As an improvement, the height adjustment device includes a base, and the base is connected to the outer cylinder by a quadrilateral bracket; the quadrilateral bracket is formed by four connecting rods hinged end to end, and the quadrilateral bracket is movably connected to the base and the outer cylinder at the vertical diagonals respectively; it also includes a constraint rod, which is diagonally connected to the quadrilateral bracket horizontally, and one end of the constraint rod is fixedly connected, and the other end is slidably connected and can be locked.

[0007] As a further improvement, the constraint rod is provided with a slide groove and also includes a locking bolt, and the locking bolt passes through the slide groove.

[0008] As another further improvement, the area of ​​the heat shield is larger than the cross-sectional area of ​​the outer cylinder.

[0009] As an improvement, there are several cooling nitrogen outlets, which are evenly distributed along the circumference with the detection port as the center.

[0010] As an improvement, the cooling nitrogen inlet is arranged at the rear of the outer cylinder.

[0011] The utility model is beneficial in that:

[0012] The flame detection device with the above structure is installed separately from the burner and supported by a height adjustment device, so that the height can be set for easy matching. In order to reduce the ambient temperature, the utility model introduces cooling nitrogen to cool the sensor, and the cooling nitrogen is injected into the environment after cooling the sensor, which can reduce the ambient temperature and further protect the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 Schematic diagram of the structure of the heat shield.

[0015] Markings in the figure: 1 outer cylinder, 2 sensor, 3 cooling nitrogen inlet, 4 wiring harness, 5 heat shield, 6 connecting rod, 7 restraining rod, 8 bottom plate, 9 ear seat, 10 cooling nitrogen outlet, 11 detection port. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0017] like Figure 1 , Figure 2 As shown, the utility model provides a long-life flame detection device, including an outer tube 1, in which a flame sensor 2 is installed; a cooling nitrogen inlet 3 is opened on the side wall of the outer tube 1; the front end of the outer tube 1 is closed by a heat shield 5, and a detection port 11 and a cooling nitrogen outlet 10 are opened on the heat shield 4; and a height adjustment device for adjusting the height of the outer tube 1 is also included.

[0018] Since the flame detection device is separated from the burner, it lacks support, so a support frame needs to be set for it. However, the detection environment is different and the height difference is large. In order to meet various use conditions, the utility model supports it through a height adjustment device.

[0019] The height adjustment device needs to be simple in structure and easy to adjust. Therefore, the height adjustment device provided in this embodiment includes a base 8, and the base 8 is connected to the outer tube 1 by a quadrilateral bracket; the quadrilateral bracket is formed by four connecting rods 6 hinged end to end, and the quadrilateral bracket is movably connected to the base 8 and the outer tube 1 at the vertical diagonal; it also includes a constraint rod 7, the constraint rod 7 is diagonally connected to the quadrilateral bracket, and one end of the constraint rod 7 is fixedly connected, and the other end is slidably connected and can be locked. Specifically, the constraint rod 7 is provided with a slide groove, and also includes a locking bolt arranged on the quadrilateral bracket, and the locking bolt passes through the slide groove.

[0020] Four connecting rods 6 of equal length are located on the same plane and connected end to end to form a rhombus. The connecting rods 6 are hinged by bolts or rivets, so that the shape of the rhombus can be changed to achieve height adjustment. The restraining rod 7 is set on the diagonal of the rhombus. By changing the connection point between the restraining rod and the quadrilateral bracket, the shape of the rhombus can be changed. At the same time, when the locking bolt is tightened, the connection point is fixed, so that the height is also fixed.

[0021] In order to adjust the angle, in this embodiment, the quadrilateral bracket is connected to the bottom plate 8 by the ear seat 9, and is also connected to the outer tube 1 by the ear seat. After the connection, it is locked by bolts, which makes it easy to adjust the tilt angle of the sensor.

[0022] In this embodiment, the heat shield 5 is circular, and its area is larger than the cross-sectional area of ​​the outer cylinder, so that more heat radiation can be blocked and the sensor behind it can be protected.

[0023] In addition, the cooling nitrogen inlet 3 is arranged at the rear of the outer cylinder 1, so that the cooling nitrogen can fully cover the outer cylinder from the back to the front along the outer cylinder, ensuring the cooling effect.

[0024] There are several cooling nitrogen outlets 10, which are evenly distributed along the circumference with the detection port 11 as the center. The cooling nitrogen ejected therefrom can form a protective gas layer for heat insulation. In the utility model, the flame sensor 2 is an ultraviolet sensor, which determines the presence of the flame by detecting the ultraviolet rays in the flame, so the cooling nitrogen will not affect the detection result.

[0025] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A long-life flame detection device, characterized in that: The utility model comprises an outer cylinder, in which a flame sensor is installed; a cooling nitrogen inlet is provided on a side wall of the outer cylinder; the front end of the outer cylinder is closed by a heat shield, on which a detection port and a cooling nitrogen outlet are provided; a height adjustment device for adjusting the height of the outer cylinder is also provided; the height adjustment device comprises a base, and the base and the outer cylinder are connected by a quadrilateral bracket; the quadrilateral bracket is formed by four connecting rods being hinged end to end, and the quadrilateral bracket is movably connected to the base and the outer cylinder at vertical diagonals respectively; and a restraining rod is also provided, the restraining rod is diagonally connected to the quadrilateral bracket in a transverse direction, and one end of the restraining rod is fixedly connected, and the other end is slidably connected and can be locked.

2. A long-life flame detection device according to claim 1, characterized in that: The restraining rod is provided with a slide groove and also includes a locking bolt, and the locking bolt passes through the slide groove.

3. A long-life flame detection device according to claim 1, characterized in that: The area of ​​the heat shield is larger than the cross-sectional area of ​​the outer cylinder.

4. A long-life flame detection device according to claim 1, characterized in that: There are several cooling nitrogen outlets, which are evenly distributed along the circumference with the detection port as the center.

5. A long-life flame detection device according to claim 1, characterized in that: The cooling nitrogen inlet is arranged at the rear of the outer cylinder.

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