Exhaust smoke waste heat monitoring device for thermal power plant

Abstract

The utility model relates to the technical field of temperature monitoring equipment, in particular to a thermal power plant exhaust smoke waste heat monitoring device, which comprises a connecting main body pipe, an outer branch pipe is arranged at the middle position outside the connecting main body pipe, the outer branch pipe and the connecting main body pipe are communicated, and an insertion pipe is inserted into the outer branch pipe and extends into the middle line inside the connecting main body pipe. The utility model has the advantages that: the connecting main body pipe can be connected with a smoke exhaust pipeline, the outer branch pipe is arranged in the middle outside the connecting main body pipe, the insertion pipe is arranged in the connecting main body pipe, the plurality of air ports in a circumferential array are arranged below the outside of the insertion pipe, the spring is arranged below the inside of the insertion pipe, and the equipment box is arranged in the insertion pipe. The temperature monitoring device is placed in the device box, the device box can seal the insertion pipe, smoke leakage is avoided, the temperature monitoring device can monitor the temperature of smoke entering the insertion pipe, and when replacement is needed, the device box can be jacked up under the action of the spring, a worker can take and use the device conveniently, and the temperature monitoring device is detached and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature monitoring equipment, in particular to a device for monitoring exhaust waste heat in a thermal power plant. Background Art

[0002] A thermal power plant, also known as a thermal power plant, is a factory that uses combustible materials (such as coal) as fuel to produce electricity. The waste heat of the flue gas in the thermal power plant can be exchanged through the economizer. The flue gas after heat exchange is discharged through the chimney. The monitoring device is the chimney's flue gas temperature monitoring probe, which is electrically connected to the monitoring box system and keeps monitoring the flue gas temperature inside the chimney.

[0003] For example, the utility model with application number CN201921355039.X discloses a flue gas sampling probe that is easy to disassemble and assemble, and relates to the technical field of flue gas sampling devices. The flue gas sampling probe that is easy to disassemble and assemble includes a main flue pipe, a sealing plate is welded at one end of the main flue pipe, and a fixed pipe is provided on one side of the main flue pipe. The flue gas sampling probe that is easy to disassemble and assemble is inserted into the sampling flue pipe with force, and the arc-shaped spring plate is aligned with the arc-shaped groove. Under the action of the restoring force of itself and the spring, it will be in the arc-shaped groove, which is convenient for installation. When disassembling, just pull the sampling flue pipe hard, thereby achieving easy disassembly and installation of the sampling flue pipe. When the flue gas passes through the mesh plate, the mesh plate can filter the flue gas to avoid clogging the sampling flue pipe. The high-pressure air pipe set will blow the high-pressure gas into the sampling flue pipe to form a directional airflow, clean the inner wall of the sampling flue pipe, avoid clogging, and also achieve easy cleaning of the sampling flue pipe.

[0004] The easily detachable flue gas sampling probe similar to the above application currently has the following deficiencies:

[0005] After the monitoring device is installed in the chimney where the flue gas is discharged, the staff needs to perform maintenance and inspection on the temperature sensor inside the equipment at intervals (to ensure the normal operation of the equipment). The traditional maintenance process requires the staff to first remove and open the protective plate of the thermal insulation and rainproof cover, which is inconvenient for maintenance and reduces work efficiency. Based on this, the present application proposes a thermal power plant exhaust waste heat monitoring device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a device for monitoring exhaust waste heat in a thermal power plant.

[0007] The purpose of the utility model is achieved through the following technical solutions: a thermal power plant exhaust waste heat monitoring device, including a connecting main pipe, an outer branch pipe is installed at the middle position of the outside of the connecting main pipe, the two are communicated, a cannula is inserted into the inside of the outer branch pipe, which extends into the center line of the inside of the connecting main pipe, a plurality of circular array air ports are opened below the outside of the cannula, an equipment box is placed inside the cannula, which is U-shaped as a whole, and the opening is covered at the air port, a temperature monitoring device is installed inside the equipment box, and a cannula is placed below the equipment box A first spring, a plurality of circular array slots are provided at the outer edge above the outer branch tube, and clamping holes are provided on both sides below the plurality of slots. A flange plate is installed above the insert tube, and a plurality of circular array fixed tubes are installed on the bottom surface thereof. The plurality of fixed tubes are respectively clamped in the plurality of slots, and a splint that can reciprocate up and down is installed below the plurality of fixed tubes. Clamping rods are installed on both sides of the outer surfaces of the plurality of splints, and a plurality of groups of the clamping rods are respectively inserted into a plurality of groups of clamping holes, and flanges are installed at both ends of the outside of the connecting main tube.

[0008] Optionally, the top surface of the outer branch pipe is concave to form a groove, and a first sealing ring is installed inside the groove, and the bottom surface of the flange plate is convex to form a boss, which is buckled in the groove.

[0009] Optionally, a fixing rod is installed at the center of the top surface of the equipment box, and a turntable is rotatably installed on the top of the fixing rod. The turntable cooperates with the pipe thread, and wrench slots are provided on both sides of the top surface of the turntable.

[0010] Optionally, an assembly rod is installed at the middle position of the top surface of the plurality of splints, which is respectively inserted into the plurality of fixing tubes, and the two are slidably matched, and a second spring is sleeved on the outside of the plurality of assembly rods.

[0011] Optionally, second sealing rings are installed on the upper and lower sides of the exterior of the device box, which fit into the inner wall of the cannula, and the height of the device box is greater than the height of the air port.

[0012] The utility model has the following advantages:

[0013] The thermal power plant exhaust waste heat monitoring device uses a connecting main pipe as the main body of the device. The connecting main pipe can be connected to the exhaust pipe. An external branch pipe is installed in the middle position of the outside of the connecting main pipe, and a plug is installed inside the external branch pipe. A plurality of air ports in a circular array are opened below the outside of the plug. A spring is installed below the inside of the plug. An equipment box is placed in the plug, and a temperature monitoring device is placed inside the plug. The equipment box can seal the plug to prevent smoke leakage. The temperature monitoring device can monitor the temperature of the smoke entering the plug. When replacement is needed, the equipment box can be lifted up by the spring to facilitate the staff to take it out and disassemble and replace the temperature monitoring device.

[0014] Among them, a plurality of circular array slots are opened on the outside of the outer branch pipe, and clamping holes are opened below both sides of the slots. A plurality of circular array fixed tubes are installed below the upper end of the insert tube, which can be clamped in the slots. A splint that can reciprocate up and down is installed below the fixed tube, and two clamping rods are installed on it. When the splint rises, the clamping rod can be inserted into the clamping hole to limit the installation of the insert tube, making it convenient to assemble and disassemble it.

[0015] Among them, a fixed rod is installed on the top surface of the equipment box, and a turntable is rotatably installed on it. The turntable can cooperate with the insert pipe thread to realize the assembly of the equipment box and compress the spring to facilitate the removal and disassembly of the equipment box.

[0016] Among them, sealing rings are installed between the equipment box and the cannula, as well as between the cannula and the external branch pipe, which can improve the sealing effect between the components and avoid smoke leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first perspective;

[0018] Figure 2 This is a second perspective diagram of the overall structure of the present invention;

[0019] Figure 3 For this utility model Figure 1 Schematic diagram of the cross-sectional structure;

[0020] Figure 4 This is a schematic diagram of the overall structure of the connecting main body pipe in the present utility model from a first perspective;

[0021] Figure 5 This is a second perspective schematic diagram of the overall structure of the connecting main body pipe in the present invention;

[0022] Figure 6 This is a schematic diagram of the overall structure of the cannula in the present invention;

[0023] Figure 7 This is a schematic diagram of the internal structure of the cannula in the present invention;

[0024] Figure 8 This is a schematic diagram of the overall structure of the device box in the present utility model;

[0025] Figure 9 This is a schematic diagram of the internal structure of the device box in the present utility model;

[0026] Figure 10 It is a schematic diagram of the overall structure of the splint in the utility model.

[0027] In the figure: 1-connecting main pipe, 2-flange plate, 3-turntable, 4-clamping plate, 5-second spring, 6-first sealing ring, 7-temperature monitoring device, 8-equipment box, 9-first spring, 10-second sealing ring, 11-external branch pipe, 12-flange, 13-slot, 14-groove, 15-hole, 16-insert pipe, 17-air port, 18-fixing pipe, 19-boss, 20-wrench slot, 21-fixing rod, 22-clamping rod, 23-assembly rod. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0029] like Figures 1 to 10 As shown, a thermal power plant exhaust waste heat monitoring device includes a connecting main pipe 1, an outer branch pipe 11 is installed at the middle position of the outside of the connecting main pipe 1, and the two are connected. A cannula 16 is inserted into the inside of the outer branch pipe 11, which extends into the center line of the inside of the connecting main pipe 1. A plurality of air ports 17 in a circumferential array are opened below the outside of the cannula 16. A device box 8 is placed inside the cannula 16. The whole is U-shaped, and the opening is covered at the air port 17. A temperature monitoring device 7 is installed inside the device box 8. A first spring 9 is placed below the device box 8. The outer branch pipe 11 is inserted into the middle position of the connecting main pipe 1. A plurality of circular arrays of card slots 13 are provided at the outer edge of the upper portion, and card holes 15 are provided on both sides below the plurality of card slots 13. A flange plate 2 is installed above the insert tube 16, and a plurality of circular arrays of fixed tubes 18 are installed on the bottom surface thereof. The plurality of fixed tubes 18 are respectively stuck in the plurality of card slots 13, and a splint 4 that can reciprocate up and down is installed below the plurality of fixed tubes 18. Card rods 22 are installed on both sides of the outer surfaces of the plurality of splints 4, and the plurality of groups of card rods 22 are respectively inserted into the plurality of groups of card holes 15, and flanges 12 are installed at both ends connected to the outside of the main tube 1.

[0030] As an optional technical solution of the present invention, the top surface of the outer branch pipe 11 is concave to form a groove 14, inside which a first sealing ring 6 is installed, and the bottom surface of the flange plate 2 is convex to form a boss 19, which is buckled in the groove 14. This structure can improve the sealing between the insert pipe 16 and the outer branch pipe 11.

[0031] As an optional technical solution of the present invention, a fixing rod 21 is installed at the center of the top surface of the equipment box 8, and a turntable 3 is rotatably installed on the top thereof. The turntable 3 is threadedly engaged with the insert tube 16, and wrench grooves 20 are provided on both sides of the top surface of the turntable 3, which makes it convenient to install and disassemble the turntable 3 using a double-ended wrench.

[0032] As an optional technical solution of the present invention, an assembly rod 23 is installed at the middle position of the top surface of multiple splints 4, which is respectively inserted into multiple fixed tubes 18, and the two are slidably matched. The second spring 5 is sleeved on the outside of the multiple assembly rods 23.

[0033] As an optional technical solution of the present invention, a second sealing ring 10 is installed on the upper and lower sides of the outside of the equipment box 8, which fits with the inner wall of the cannula 16. The height of the equipment box 8 is greater than the height of the air port 17, so that the smoke can directly contact the temperature monitoring device 7 for temperature monitoring, and the smoke will not be emitted from the cannula 16. At the same time, when the equipment box 8 rises, the cannula 16 can still be sealed.

[0034] In summary, the features, assembly methods, usage processes and functions realized of each component in the present invention are as follows: the connecting main pipe 1 is used as the main body of the device, and the connecting main pipe 1 can be connected to the smoke exhaust pipe. An outer branch pipe 11 is installed at the middle position of the outside of the connecting main pipe 1, and a cannula 16 is installed inside it. A plurality of air ports 17 in a circular array are provided below the outside of the cannula 16, and a spring is installed below the inside of the cannula 16. A device box 8 is placed in the cannula 16, and a temperature monitoring device 7 is placed inside it. The device box 8 can seal the cannula 16 to prevent smoke leakage. The temperature monitoring device 7 can monitor the temperature of the smoke entering the cannula 16. When replacement is required, the device box 8 can be lifted up by the spring, which is convenient for the staff to take and use, and the temperature monitoring device 7 can be disassembled and replaced. A circular array of card slots 13 are provided, and card holes 15 are provided below both sides of the card slots 13. A plurality of circular array of fixed tubes 18 are installed below the upper end of the insert tube 16, which can be stuck in the card slots 13. A splint 4 that can reciprocate up and down is installed below the fixed tube 18, and two card rods 22 are installed on it. When the splint 4 rises, the card rods 22 can be inserted into the card holes 15 to limit the installation of the insert tube 16, which is convenient for assembly and disassembly. A fixing rod 21 is installed on the top surface of the equipment box 8, and a turntable 3 is rotatably installed on it. The turntable 3 can be threadedly matched with the insert tube 16 to realize the assembly of the equipment box 8 and compress the spring to facilitate the removal and disassembly of the equipment box 8. Sealing rings are installed between the equipment box 8 and the insert tube 16, as well as between the insert tube 16 and the external branch pipe 11, which can improve the sealing effect between the components and avoid smoke leakage.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring exhaust heat in a thermal power plant, characterized by: The invention comprises a connecting main body tube (1), wherein an outer branch tube (11) is installed at the middle position of the outer portion of the connecting main body tube (1), and the two are connected. A cannula (16) is inserted into the inner portion of the outer branch tube (11), which extends into the middle line of the inner portion of the connecting main body tube (1). A plurality of air ports (17) in a circumferential array are opened below the outer portion of the cannula (16). A device box (8) is placed inside the cannula (16), which is U-shaped as a whole and has an opening covering the air port (17). A temperature monitoring device (7) is installed inside the device box (8), and a first spring (9) is placed below the device box (8). A spring (9) is opened at the outer edge of the upper portion of the outer branch tube (11). There are multiple circumferential array slots (13), and multiple card holes (15) are opened on both sides below the multiple card slots (13). A flange plate (2) is installed above the insert tube (16), and multiple circumferential array fixed tubes (18) are installed on the bottom surface thereof. The multiple fixed tubes (18) are respectively stuck in the multiple slots (13). A clamping plate (4) that can reciprocate up and down is installed below the multiple fixed tubes (18). Both sides of the outer surface of the multiple clamping plates (4) are installed with clamping rods (22), and multiple groups of the clamping rods (22) are respectively inserted into multiple groups of card holes (15). Flange plates (12) are installed at both ends of the outside of the connecting main body tube (1).

2. The device for monitoring exhaust heat in a thermal power plant according to claim 1, characterized in that: The top surface of the outer branch pipe (11) is concave to form a groove (14), in which a first sealing ring (6) is installed. The bottom surface of the flange plate (2) is convex to form a boss (19), which is buckled in the groove (14).

3. The device for monitoring exhaust waste heat in a thermal power plant according to claim 1, characterized in that: A fixing rod (21) is installed at the center of the top surface of the equipment box (8), and a turntable (3) is rotatably installed on the top of the fixing rod. The turntable (3) is threadedly matched with the insert (16), and spanner grooves (20) are provided on both sides of the top surface of the turntable (3).

4. The device for monitoring exhaust waste heat in a thermal power plant according to claim 1, characterized in that: An assembly rod (23) is installed at the middle position of the top surface of the plurality of clamps (4), which is respectively inserted into the plurality of fixed tubes (18) and the two are slidably matched. The plurality of assembly rods (23) are each covered with a second spring (5).

5. The device for monitoring exhaust waste heat in a thermal power plant according to claim 1, characterized in that: Second sealing rings (10) are installed on the upper and lower sides of the outside of the device box (8), which fit the inner wall of the cannula (16). The height of the device box (8) is greater than the height of the air port (17).

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