Isolated infrared temperature measuring device

Abstract

The utility model relates to the technical field of infrared temperature measurement, in particular to an isolated infrared temperature measuring device which comprises an extension pipe communicated with an inner cavity of a continuous furnace, a cleaning pipe with one end connected to the extension pipe, a support arranged at the other end of the cleaning pipe and an infrared thermometer arranged on the support. A first control valve for controlling opening and closing of a pipeline is arranged between the extension pipe and the cleaning pipe, the cleaning pipe is provided with an infrared temperature measurement window, the outer wall of the cleaning pipe is connected with an air inlet pipe and an air outlet pipe which are used for cleaning the end face, away from the infrared thermometer, of the infrared temperature measurement window, and the air inlet pipe and the air outlet pipe are symmetrically distributed along the axis of the cleaning pipe; the air inlet pipe and the air outlet pipe are each provided with a second control valve for controlling the pipeline to be opened and closed. The infrared temperature measurement window has the effect of conveniently cleaning attachments adsorbed on the infrared temperature measurement window.

Description

Technical Field

[0001] The present application relates to the field of infrared temperature measurement technology, and in particular to an isolated infrared temperature measurement device. Background Art

[0002] At present, infrared thermometers are commonly used to measure temperature in continuous furnaces. Infrared thermometers are non-contact temperature measuring devices that measure the temperature of an object by detecting the infrared radiation energy emitted from the surface of the object. An infrared temperature measuring hole is opened on the shell of the continuous furnace and a pipe is welded. The pipe has an infrared temperature measuring window for the infrared thermometer probe to detect. The infrared temperature measuring window is made of quartz glass.

[0003] However, continuous furnaces usually run for a long time. After the infrared thermometer has been used for a period of time, graphite dust and various volatile substances will be adsorbed on the infrared temperature measurement window, causing contamination of the infrared temperature measurement window, thereby reducing the accuracy and reliability of the infrared thermometer, so further improvement is needed. Utility Model Content

[0004] In order to facilitate the cleaning of attachments adsorbed on the infrared temperature measurement window, the present application provides an isolated infrared temperature measurement device.

[0005] The isolated infrared temperature measuring device provided in this application adopts the following technical solution:

[0006] An isolated infrared temperature measuring device comprises an extension tube connected to an inner cavity of a continuous furnace, a cleaning tube connected to the extension tube at one end, a bracket arranged at the other end of the cleaning tube, and an infrared thermometer arranged on the bracket, a first control valve for controlling the passage of the pipeline is arranged between the extension tube and the cleaning tube, the cleaning tube is provided with an infrared temperature measuring window, an air inlet pipe and an air outlet pipe for cleaning the end face of the infrared temperature measuring window away from the infrared thermometer are connected to the outer wall of the cleaning tube, the air inlet pipe and the air outlet pipe are symmetrically distributed along the axis of the cleaning tube, and the air inlet pipe and the air outlet pipe are both provided with a second control valve for controlling the passage of the pipeline.

[0007] By adopting the above technical solution, during the temperature measurement operation, the first control valve is opened and the second control valve is closed. When it is necessary to clean the inner end surface of the infrared temperature measurement window, the first control valve is closed and the second control valve is opened. Nitrogen is blown into the inner cavity of the cleaning tube through the air inlet pipe. The flowing gas passes through the inner end surface of the infrared temperature measurement window to blow off the attachments adsorbed on the infrared temperature measurement window. The blown-off attachments are discharged from the cleaning tube through the air outlet pipe, thereby reducing the residual attachments in the cleaning tube and improving the cleanliness of the infrared temperature measurement window.

[0008] Preferably, the extension tube is a graphite tube.

[0009] By adopting the above technical solution, the graphite tube has good adsorption properties and can absorb the dust flowing into the graphite tube, thereby reducing the dust pollution to the infrared temperature measurement window.

[0010] Preferably, the first control valve is a flanged ball valve.

[0011] By adopting the above technical solution, the sealing between the extension pipe and the first control valve and between the first control valve and the cleaning pipe is improved. Under the premise of meeting the continuous high-temperature production of the continuous furnace, the hidden dangers of failure in production are reduced and the stability of continuous operation of the equipment is improved.

[0012] Preferably, the bracket includes a first mounting plate sleeved on the end of the cleaning pipe away from the first control valve, a plurality of connecting rods arranged on the first mounting plate, and a second mounting plate arranged on the end of the connecting rods away from the first mounting plate, and the plurality of connecting rods are distributed around the axis of the cleaning pipe, the infrared thermometer is fixedly connected to the second mounting plate, and the detection head of the infrared thermometer is passed through the second mounting plate and coaxially arranged on the cleaning pipe.

[0013] By adopting the above technical solution, the bracket includes a first mounting plate, a connecting rod and a second mounting plate, thereby effectively reducing the weight of the bracket.

[0014] Preferably, the connecting rod is a screw rod, and the first mounting plate and the second mounting plate are both provided with through holes for the connecting rod to slide through, and both ends of the connecting rod are threadedly connected with a pair of locking nuts, which are tightly pressed against the plate surface of the first mounting plate / the second mounting plate.

[0015] By adopting the above technical solution, the connecting rod is a screw rod, and locking nuts are provided at both ends of the connecting rod, so that the position of the locking nut can be adjusted according to the working conditions, thereby adjusting the distance between the first mounting plate and the second mounting plate, and then adjusting the distance between the detection head of the infrared thermometer and the cleaning tube.

[0016] Preferably, the outer wall of the cleaning tube is fixedly connected to a cleaning seat, the cleaning seat has a storage cavity connected to the inner cavity of the cleaning tube, the cleaning seat is provided with a cleaning plate slidably connected to the storage cavity, and the cleaning seat is provided with a driving member for driving the cleaning plate to slide to wipe the end surface of the infrared temperature measurement window away from the infrared thermometer.

[0017] By adopting the above technical solution, during the temperature measurement operation, the first control valve is opened, the second control valve is closed, and the cleaning plate is slidably stored in the storage cavity. When it is necessary to clean the inner end surface of the infrared temperature measuring window, the first control valve is closed, the second control valve is opened, and the driving member drives the cleaning plate to slide into the inner cavity of the cleaning tube. During the sliding process of the cleaning plate, the cleaning plate abuts against the inner end surface of the infrared temperature measuring window, thereby wiping and cleaning the inner end surface of the infrared temperature measuring window, and nitrogen is blown into the inner cavity of the cleaning tube through the air inlet pipe. The attachments remaining in the cleaning tube are discharged from the cleaning tube through the air outlet pipe, and a cycle of in-and-out blowing is formed to clean the remaining attachments as much as possible.

[0018] Preferably, the cleaning plate is provided with a rubber plate abutting against the end surface of the infrared temperature measuring window.

[0019] By adopting the above technical solution and adding a rubber plate, flexible contact between the cleaning plate and the infrared temperature measuring window can be achieved, thereby reducing the possibility of scratches on the infrared temperature measuring window.

[0020] Preferably, the driving member is a cylinder, a cylinder body of the cylinder is fixedly connected to the outer wall of the cleaning seat, and a piston rod of the cylinder is penetrated through the cleaning seat and fixedly connected to the cleaning plate.

[0021] By adopting the above technical solution, the sliding of the cleaning plate is achieved by extending and retracting the piston rod of the cylinder, the cylinder has a fast response speed, and the cleaning efficiency is improved.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. During the temperature measurement operation, the first control valve is opened and the second control valve is closed. When the inner end face of the infrared temperature measurement window needs to be cleaned, the first control valve is closed and the second control valve is opened. Nitrogen is blown into the inner cavity of the cleaning tube through the air inlet pipe. The flowing gas passes through the inner end face of the infrared temperature measurement window to blow off the attachments adsorbed on the infrared temperature measurement window. The blown-off attachments are discharged from the cleaning tube through the air outlet pipe, thereby reducing the residue of attachments in the cleaning tube and improving the cleanliness of the infrared temperature measurement window.

[0024] 2. The graphite tube has good adsorption properties and can absorb the dust flowing into the graphite tube, thereby reducing the dust pollution to the infrared temperature measurement window;

[0025] 3. During the temperature measurement operation, the first control valve is opened, the second control valve is closed, and the cleaning plate is slidably stored in the storage cavity. When the inner end surface of the infrared temperature measuring window needs to be cleaned, the first control valve is closed, the second control valve is opened, and the driving member drives the cleaning plate to slide into the inner cavity of the cleaning tube. During the sliding process of the cleaning plate, the cleaning plate abuts against the inner end surface of the infrared temperature measuring window, thereby wiping and cleaning the inner end surface of the infrared temperature measuring window, and nitrogen is blown into the inner cavity of the cleaning tube through the air inlet pipe. The attachments remaining in the cleaning tube are discharged from the cleaning tube through the air outlet pipe, and a cycle of in and out is formed to clean the remaining attachments as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an isolated infrared temperature measuring device in Example 1;

[0027] Figure 2 is a schematic diagram of the internal structure of the cleaning tube in Example 1;

[0028] Figure 3 is a schematic diagram of the structure of the bracket in Example 1;

[0029] Figure 4 It is a schematic diagram of the internal structure of the cleaning seat and the cleaning tube in Example 1.

[0030] In the figure, 1. extension tube; 2. cleaning tube; 21. air inlet pipe; 22. air outlet pipe; 23. second control valve; 24. infrared temperature measuring window; 3. bracket; 31. first mounting plate; 32. connecting rod; 33. second mounting plate; 34. locking nut; 4. infrared thermometer; 5. first control valve; 6. cleaning seat; 61. storage chamber; 62. cleaning plate; 63. rubber plate; 64. cylinder. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] Embodiment 1:

[0033] The present application embodiment discloses an isolated infrared temperature measuring device, referring to Figure 1 , comprising an extension tube 1 connected to the inner cavity of the continuous furnace, a cleaning tube 2 coaxially connected to the extension tube 1 at one end, a bracket 3 disposed at the other end of the cleaning tube 2, and an infrared thermometer 4 disposed on the bracket 3. In this embodiment, the extension tube 1 is a graphite tube, and the extension tube 1 is fixedly installed in the furnace shell of the continuous furnace.

[0034] A first control valve 5 for controlling the opening and closing of the pipeline is arranged between the extension pipe 1 and the cleaning pipe 2. The first control valve 5 is a flange-type ball valve. One end of the first control valve 5 is fixedly connected to the end face of the extension pipe 1 through a flange, and the other end of the first control valve 5 is fixedly connected to the end face of the cleaning pipe 2 through a flange.

[0035] Reference Figure 1 , Figure 2 The inner cavity of the cleaning tube 2 is fixedly connected with an infrared temperature measuring window 24, which is made of quartz glass and is coaxial with the cleaning tube 2. The outer wall of the cleaning tube 2 is connected with an inlet pipe 21 and an outlet pipe 22 for cleaning the end face of the infrared temperature measuring window 24 away from the infrared thermometer 4. The outlet of the inlet pipe 21 faces the end face of the infrared temperature measuring window 24 away from the infrared thermometer 4. The inlet pipe 21 and the outlet pipe 22 are connected to the inner cavity of the cleaning tube 2. The inlet pipe 21 and the outlet pipe 22 are symmetrically distributed along the axis of the cleaning tube 2. The inlet pipe 21 and the outlet pipe 22 are both provided with a second control valve 23 for controlling the opening and closing of the pipeline. The inlet pipe 21 is externally connected to a nitrogen tank, and the outlet pipe 22 is externally connected to a collecting tank for collecting re-debris.

[0036] Reference Figure 1 , Figure 3 The bracket 3 includes a first mounting plate 31 coaxially fixedly sleeved on the end of the cleaning pipe 2 away from the first control valve 5, a plurality of connecting rods 32 arranged on the first mounting plate 31, and a second mounting plate 33 arranged on the end of the connecting rod 32 away from the first mounting plate 31, and the plurality of connecting rods 32 are distributed around the axis of the cleaning pipe 2. The connecting rod 32 is a screw rod, and the first mounting plate 31 and the second mounting plate 33 are both provided with through holes for the connecting rod 32 to slide through. Both ends of the connecting rod 32 are threadedly connected with a pair of locking nuts 34, and the locking nuts 34 are tightly pressed against the plate surface of the first mounting plate 31 / the second mounting plate 33. The infrared thermometer 4 is fixedly connected to the second mounting plate 33, and the detection head of the infrared thermometer 4 is passed through the second mounting plate 33 and coaxially arranged on the cleaning pipe 2.

[0037] The implementation principle of this embodiment is: during the temperature measurement operation, the first control valve 5 is opened and the second control valve 23 is closed. When it is necessary to clean the inner end surface of the infrared temperature measuring window 24, the first control valve 5 is closed, the second control valve 23 is opened, and nitrogen is blown into the inner cavity of the cleaning tube 2 through the air inlet pipe 21. The gas is blown toward the inner end surface of the infrared temperature measuring window 24 to blow off the attachments adsorbed on the infrared temperature measuring window 24. The blown-off attachments are discharged from the cleaning tube 2 through the air outlet pipe 22, thereby reducing the residual attachments in the cleaning tube 2 and improving the cleanliness of the infrared temperature measuring window 24.

[0038] Embodiment 2:

[0039] The difference from Example 1 is that, referring to Figure 4The outer wall of the cleaning tube 2 is fixedly connected with a cleaning seat 6, and the cleaning seat 6 has a receiving cavity 61 connected to the inner cavity of the cleaning tube 2. The cleaning seat 6 is provided with a cleaning plate 62 slidably connected to the receiving cavity 61, and the cleaning plate 62 is provided with a rubber plate 63 abutting against the end surface of the infrared temperature measuring window 24. The cleaning seat 6 is provided with a driving member for driving the cleaning plate 62 to slide so as to wipe the end surface of the infrared temperature measuring window 24 away from the infrared thermometer 4. The driving member is a cylinder 64, and the cylinder body of the cylinder 64 is fixedly connected to the outer wall of the cleaning seat 6. The piston rod of the cylinder 64 is penetrated through the cleaning seat 6 and fixedly connected to the cleaning plate 62.

[0040] The implementation principle of this embodiment is as follows: during the temperature measurement operation, the first control valve 5 is opened, the second control valve 23 is closed, and the piston rod of the cylinder 64 contracts to drive the cleaning plate 62 to slide and be stored in the storage chamber 61. When it is necessary to clean the inner end surface of the infrared temperature measurement window 24, the first control valve 5 is closed, the second control valve 23 is opened, and the piston rod of the cylinder 64 is extended to drive the cleaning plate 62 to slide into the inner cavity of the cleaning tube 2. During the sliding process of the cleaning plate 62, the rubber plate 63 on the cleaning plate 62 abuts against the inner end surface of the infrared temperature measurement window 24, thereby wiping and cleaning the inner end surface of the infrared temperature measurement window 24, and blowing nitrogen into the inner cavity of the cleaning tube 2 through the air inlet pipe 21, and the attachments remaining in the cleaning tube 2 are discharged from the cleaning tube 2 through the air outlet pipe 22, and the remaining attachments are cleaned as much as possible.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An isolated infrared temperature measuring device, characterized in that: The invention comprises an extension tube (1) connected to the inner cavity of a continuous furnace, a cleaning tube (2) having one end connected to the extension tube (1), a bracket (3) arranged at the other end of the cleaning tube (2), and an infrared thermometer (4) arranged on the bracket (3); a first control valve (5) for controlling the passage of a pipeline is arranged between the extension tube (1) and the cleaning tube (2); the cleaning tube (2) is provided with an infrared temperature measurement window (24); an air inlet pipe (21) and an air outlet pipe (22) for cleaning an end surface of the infrared temperature measurement window (24) away from the infrared thermometer (4) are connected to the outer wall of the cleaning tube (2); the air inlet pipe (21) and the air outlet pipe (22) are symmetrically distributed along the axis of the cleaning tube (2); and the air inlet pipe (21) and the air outlet pipe (22) are both provided with a second control valve (23) for controlling the passage of a pipeline.

2. The isolated infrared temperature measuring device according to claim 1, characterized in that: The extension tube (1) is a graphite tube.

3. The isolated infrared temperature measuring device according to claim 1, characterized in that: The first control valve (5) is a flange-type ball valve.

4. The isolated infrared temperature measuring device according to claim 1, characterized in that: The bracket (3) comprises a first mounting plate (31) sleeved on an end of the cleaning pipe (2) away from the first control valve (5), a plurality of connecting rods (32) arranged on the first mounting plate (31), and a second mounting plate (33) arranged on an end of the connecting rods (32) away from the first mounting plate (31), the plurality of connecting rods (32) being distributed around the axis of the cleaning pipe (2), the infrared thermometer (4) being fixedly connected to the second mounting plate (33), and the detection head of the infrared thermometer (4) being passed through the second mounting plate (33) and coaxially arranged on the cleaning pipe (2).

5. The isolated infrared temperature measuring device according to claim 4, characterized in that: The connecting rod (32) is a screw rod. The first mounting plate (31) and the second mounting plate (33) are both provided with a through hole for the connecting rod (32) to slide through. Both ends of the connecting rod (32) are threadedly connected to a pair of locking nuts (34), and the locking nuts (34) are tightly pressed against the plate surface of the first mounting plate (31) / the second mounting plate (33).

6. The isolated infrared temperature measuring device according to claim 1, characterized in that: The outer wall of the cleaning tube (2) is fixedly connected to a cleaning seat (6), the cleaning seat (6) having a receiving cavity (61) connected to the inner cavity of the cleaning tube (2), the cleaning seat (6) being provided with a cleaning plate (62) slidably connected to the receiving cavity (61), and the cleaning seat (6) being provided with a driving member for driving the cleaning plate (62) to slide so as to wipe the end surface of the infrared temperature measuring window (24) away from the infrared thermometer (4).

7. The isolated infrared temperature measuring device according to claim 6, characterized in that: The cleaning plate (62) is provided with a rubber plate (63) abutting against the end surface of the infrared temperature measurement window (24).

8. The isolated infrared temperature measuring device according to claim 6, characterized in that: The driving member is a cylinder (64), the cylinder body of the cylinder (64) is fixedly connected to the outer wall of the cleaning seat (6), and the piston rod of the cylinder (64) is inserted into the cleaning seat (6) and fixedly connected to the cleaning plate (62).

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