Flame monitoring probe with water cooling function

Abstract

The utility model relates to a flame monitoring probe with a water cooling function, and relates to the technical field of flame monitoring probes. The cooling probe comprises a probe body, a cooling outer cover is arranged outside the probe body, the cooling outer cover comprises an outer shell and a sealing block, a water inlet and a water outlet are formed in the end wall of one end of the outer shell and communicated with the interior of the outer shell, and a sealing opening for the sealing block to be arranged is further formed in the end wall of the outer shell. The probe body comprises a sensor part, a cable cylinder and a power supply leading-out wire end which are arranged in sequence, and the sealing block is provided with a communication hole for the cable cylinder to pass through in a penetrating manner. The flame monitoring probe has the effect of improving the high temperature resistance and the monitoring accuracy of the flame monitoring probe.

Description

Technical Field

[0001] The present application relates to the technical field of flame monitoring probes, and in particular to a flame monitoring probe with water cooling. Background Art

[0002] A flame detector, also known as an electric eye, is a device that sends "flame presence", "flame extinction" or "interruption signals" to a control device. It is generally composed of a sensor and a controller. The sensor is mainly composed of a sensitive resistor. When the presence of a flame is detected, the resistance signal changes. Therefore, the presence of a flame can be detected through the device. It is widely used in flue gas furnaces, hot air furnaces and other equipment. However, the flame detectors used today have a high failure rate. The reason is that the flame probe is not resistant to high temperatures. Traditional probes should be used in places below 60°C. In places with too high temperatures, their service life is short, which greatly affects the main equipment on site, so it needs to be improved. Utility Model Content

[0003] In order to improve the high temperature resistance and monitoring accuracy of the flame monitoring probe, the present application provides a flame monitoring probe with water cooling.

[0004] The flame monitoring probe with water cooling provided in this application adopts the following technical solution:

[0005] A flame monitoring probe with water cooling comprises a probe body, a cooling cover is provided on the outside of the probe body, the cooling cover comprises an outer shell and a sealing block, a water inlet and a water outlet are provided on an end wall of one end of the outer shell, both the water inlet and the water outlet are connected to the interior of the outer shell, the end wall of the outer shell is also provided with a sealing port for the sealing block to be set, the probe body comprises a sensor part, a cable barrel and a power lead end which are arranged in sequence, and the sealing block is penetrated by a connecting hole for the cable barrel to pass through.

[0006] By adopting the above technical solution, a cooling cover is set on the outside of the probe body, which can isolate a certain temperature. At the same time, circulating water is injected into the outer shell through the water inlet and outlet, which can continuously exchange heat with the inside of the outer shell, thereby reducing the temperature around the sensor part to ensure that the sensor part can work normally and improve the overall high temperature resistance and monitoring accuracy.

[0007] Optionally, the inner wall of the sealing port is provided with an internal thread, and the outer wall of the sealing block is provided with an external thread, and the sealing block is detachably connected to the sealing port via the internal thread and the external thread.

[0008] By adopting the above technical solution, the sealing block and the sealing port are set to a detachable connection mode, which facilitates the convenient disassembly and replacement of the sealing block when the sealing block is worn, thereby saving operation time and improving maintenance efficiency.

[0009] Optionally, a sealing strip is provided at the external thread opening of the sealing block.

[0010] By adopting the above technical solution, providing a sealing strip can reduce the leakage of cooling water inside the outer shell, thereby improving the overall sealing performance of the flame monitoring probe of the present application.

[0011] Optionally, the outer wall of the cable barrel abuts against the inner wall of the communicating hole.

[0012] By adopting the above technical solution, the outer wall of the cable barrel is abutted against the inner wall of the connecting hole, thereby reducing the probability of circulating water in the outer shell overflowing from the gap between the two, thereby improving the sealing performance of the flame monitoring probe of the present application.

[0013] Optionally, the cooling cover further includes a fixed threaded base, which is arranged on an inner wall of the outer shell at one end away from the sealing port, and the sensor part is mounted on the fixed threaded base.

[0014] By adopting the above technical solution, a fixed threaded base is provided to form a detachable connection between the sensor part and the outer shell, thereby improving the convenience of assembly and disassembly of the probe body and the cooling cover and improving the assembly efficiency.

[0015] Optionally, the probe body further includes a first connecting bolt and a second connecting bolt, and the first connecting bolt and the second connecting bolt are arranged between the cable barrel and the power lead-out terminal.

[0016] By adopting the above technical solution and setting a first connecting bolt and a second connecting bolt, the cable barrel and the power lead-out terminal can be set to a detachable connection. When the electrical connection part of the probe body fails, the wiring part can be separated from the cable barrel by unscrewing the first connecting bolt, thereby improving the maintenance convenience of the probe body.

[0017] Optionally, a first high-temperature glass protective layer is provided at the bottom of the outer shell.

[0018] By adopting the above technical solution, the first high-temperature glass protective layer is provided to insulate the bottom of the outer shell from high temperature, so as to prevent the temperature of the cooling water inside the outer shell from rising rapidly, thereby improving the cooling effect on the sensor part. At the same time, since the first high-temperature glass protective layer is light-transmitting, it will not affect the working state of the sensor part inside the outer shell, and has high practicality.

[0019] Optionally, the outer wall of the sensor portion is provided with a second high-temperature glass protective layer.

[0020] By adopting the above technical solution, setting up a second high-temperature glass protective layer can insulate the sensor part from high temperature, thereby protecting the structure of the sensor part completely and extending the service life. At the same time, since the second high-temperature glass protective layer is light-transmitting, it will not affect the working state of the sensor part, and has high practicality.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. A cooling cover is installed outside the probe body to isolate a certain temperature. At the same time, circulating water is injected into the outer shell through the water inlet and outlet, which can continuously exchange heat with the interior of the outer shell, thereby reducing the temperature around the sensor part to ensure the normal operation of the sensor part, improve the overall high temperature resistance and monitoring accuracy;

[0023] 2. The sealing block and the sealing port are set to a detachable connection mode, which makes it easy to disassemble and replace the sealing block when it is worn, thereby saving operation time and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a flame monitoring probe with water cooling in an embodiment of the present application.

[0025] Figure 2 It is a structural diagram of the probe body in the embodiment of the present application.

[0026] Figure 3 It is a schematic structural diagram of the cooling cover in an embodiment of the present application.

[0027] Figure 4 It is a structural schematic diagram of the sealing block in an embodiment of the present application.

[0028] Explanation of the accompanying symbols: 1. Probe body; 11. Sensor part; 12. Cable barrel; 13. Power lead-in terminal; 14. First connecting bolt; 15. Second connecting bolt; 2. Cooling cover; 21. Outer shell; 22. Sealing block; 23. Water inlet; 24. Water outlet; 25. Sealing port; 26. Connecting hole; 27. Sealing strip; 28. Fixed threaded base; 3. First high-temperature glass protective layer; 4. Second high-temperature glass protective layer. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The embodiment of the present application discloses a flame monitoring probe with water cooling. Figure 1 and Figure 2, including a probe body 1 and a cooling cover 2 arranged on the outside of the probe body 1. The probe body 1 includes a sensor part 11, a cable barrel 12, a first connecting bolt 14, a second connecting bolt 15 and a power lead-out terminal 13 arranged in sequence. The sensor part 11 adopts a photosensor to detect the fire source. A second high-temperature glass protective layer 4 is provided on the outside of the sensor part 11 to isolate the sensor part 11 from the outside world, further improving the high-temperature resistance of the sensor part 11, and due to the light transmittance of the second high-temperature glass protective layer 4, it can provide good protection effect without hindering the operation of the sensor part 11.

[0031] Reference Figure 1 and Figure 2 A wire is provided in the cable barrel 12, and the wire is used to connect to the sensor part 11 for transmitting power and signals. The first connecting bolt 14 is provided at the end of the cable barrel 12 away from the sensor part 11, and the second connecting bolt 15 is provided at the end of the power lead-out terminal 13 close to the first connecting bolt 14. The cable barrel 12 and the power lead-out terminal 13 are provided with a detachable connection mode through the first connecting bolt 14 and the second connecting bolt 15. After the electrical connection part of the probe body 1 fails, the wiring part can be separated from the cable barrel 12 by unscrewing the first connecting bolt 14, thereby improving the convenience of maintenance.

[0032] Reference Figure 1 and Figure 3 The cooling cover 2 includes an outer shell 21, a sealing block 22 and a fixed threaded base 28. The outer shell 21 is cylindrical. A first high-temperature glass protective layer 3 is provided at the bottom of the outer shell 21 to isolate the flame temperature. At the same time, since the first high-temperature glass protective layer 3 has good light transmittance, it can perform temperature isolation without affecting the operation of the sensor part 11, thereby improving the high-temperature resistance and monitoring accuracy of the sensor part 11.

[0033] Reference Figure 2 and Figure 3 A water inlet 23 and a water outlet 24 are provided on the end wall of the outer shell 21 away from the first high-temperature glass protective layer 3, so as to introduce circulating water into the outer shell 21 for cooling; a fixed threaded base 28 is provided on the inner wall of the outer shell 21 away from the water inlet 23 and the water outlet 24, and an external thread is provided on the surface of the fixed threaded base 28. A hole is opened on the bottom wall of the sensor part 11, and an internal thread is provided on the inner wall of the hole. The sensor part 11 is connected by the internal and external threads, which improves the convenience of assembly and disassembly.

[0034] Reference Figure 2 、 Figure 3 and Figure 4The end wall of the outer shell 21 is also provided with a sealing port 25 for the sealing block 22 to be set. The sealing port 25 is located between the water inlet 23 and the water outlet 24. The outer wall of the outer shell 21 is provided with an external thread, and the inner wall of the sealing port 25 is provided with an internal thread. Through the cooperation of the internal and external threads, the sealing block 22 and the sealing port 25 are detachably connected. A sealing strip 27 is provided at the opening of the external thread of the sealing block 22 to improve the sealing performance and reduce the probability of leakage of the internal circulating water; the sealing block 22 is penetrated along the thickness direction to provide a connecting hole 26 for the cable barrel 12 to pass through, and the outer wall of the cable barrel 12 is against the inner wall of the connecting hole 26. In this embodiment, the diameter of the cable barrel 12 is larger than the diameter of the sensor part 11.

[0035] The implementation principle of a flame monitoring probe with water cooling in an embodiment of the present application is as follows: a cooling cover 2 is set on the outside of the probe body 1, which can isolate a certain temperature. At the same time, circulating water is injected into the outer shell 21 through the water inlet 23 and the water outlet 24, which can continuously exchange heat with the inside of the outer shell 21, thereby reducing the temperature around the sensor part 11 to ensure that the sensor part 11 can work normally, and improve the overall high temperature resistance and monitoring accuracy.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A flame monitoring probe with water cooling, comprising a probe body (1), characterized in that: A cooling cover (2) is provided on the outside of the probe body (1), and the cooling cover (2) includes an outer shell (21) and a sealing block (22). A water inlet (23) and a water outlet (24) are provided on an end wall of the outer shell (21), and both the water inlet (23) and the water outlet (24) are communicated with the interior of the outer shell (21). The end wall of the outer shell (21) is also provided with a sealing opening (25) for the sealing block (22) to be provided. The probe body (1) includes a sensor part (11), a cable barrel (12) and a power lead-out terminal (13) which are arranged in sequence. A connecting hole (26) is provided through the sealing block (22) for the cable barrel (12) to pass through.

2. The flame monitoring probe with water cooling according to claim 1, characterized in that: The inner wall of the sealing port (25) is provided with an internal thread, and the outer wall of the sealing block (22) is provided with an external thread. The sealing block (22) is detachably connected to the sealing port (25) via the internal thread and the external thread.

3. The flame monitoring probe with water cooling according to claim 2, characterized in that: A sealing strip (27) is provided at the external thread opening of the sealing block (22).

4. The flame monitoring probe with water cooling according to claim 1, characterized in that: The outer wall of the cable barrel (12) abuts against the inner wall of the communicating hole (26).

5. The flame monitoring probe with water cooling according to claim 1, characterized in that: The cooling outer cover (2) further comprises a fixed threaded base (28), wherein the fixed threaded base (28) is arranged on an inner wall of an end of the outer shell (21) away from the sealing opening (25), and the sensor part (11) is mounted on the fixed threaded base (28).

6. The flame monitoring probe with water cooling according to claim 1, characterized in that: The probe body (1) further comprises a first connecting bolt (14) and a second connecting bolt (15), wherein the first connecting bolt (14) and the second connecting bolt (15) are arranged between the cable barrel (12) and the power lead-out terminal (13).

7. The flame monitoring probe with water cooling according to claim 1, characterized in that: A first high-temperature glass protective layer (3) is provided at the bottom of the outer shell (21).

8. The flame monitoring probe with water cooling according to claim 1, characterized in that: The outer wall of the sensor part (11) is provided with a second high-temperature glass protective layer (4).

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