A boiler combustion power field temperature detection system

Abstract

The present invention discloses a boiler combustion power field temperature detection system, which includes a furnace and a burner. The furnace is arranged in a rectangular structure, and the burners are distributed on the inner walls around the furnace. Corresponding thermocouples are installed on the burners, and the thermocouples are connected to the inner wall of the furnace through a connecting assembly. The present application uses eight connecting assemblies to be equidistantly welded on a mounting plate. When installed corresponding to the detection points on the inner side of the furnace, by aligning the bottom end of the connecting assembly with the burner, and then using the mounting plate to fix the connecting assembly to the inner wall of the furnace, not only can the equidistant distribution between the thermocouples in the same group be guaranteed, but also the distance between the detection ends of multiple thermocouples in the same group and the burner can be guaranteed to be 50 cm, thereby ensuring the accuracy of the detection.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of power field detection systems, and in particular to a boiler combustion power field temperature detection system. Background Art

[0002] The traditional boiler combustion power field needs to undergo wind leveling and power field testing after maintenance and before ignition. This method generally cannot perform online monitoring and dynamic adjustment of the combustion power field after startup. Especially when the primary wind speed or burner nozzle has abnormal conditions, the staff can only make adjustments based on their personal feelings and experience, which cannot accurately judge the boiler power field conditions in the boiler, is not conducive to improving combustion efficiency, and at the same time, cannot guarantee the safety and economy of the unit.

[0003] According to a boiler combustion power field temperature detection system provided by patent application number CN201720900058.0, it includes a distributed control system, a wind speed measuring device and multiple thermocouples. The wind speed measuring device and the thermocouples are both connected to the distributed control system. The wind speed measuring device is located on the primary air duct corresponding to the burner. Multiple thermocouples are evenly distributed above the position of the burner in the boiler. The height difference between the thermocouple corresponding to each burner and the burner is the same. The thermocouples pass through the water-cooled wall fins in the boiler and penetrate into the furnace of the boiler.

[0004] The above-mentioned boiler combustion power field temperature detection system can monitor the temperature distribution in the boiler in real time, so that the staff can accurately grasp the temperature distribution in the boiler, that is, the working status of each burner, so that the working status of each burner can be adjusted in a targeted manner, the temperature distribution in the boiler can be adjusted, the boiler power field can be improved, the combustion efficiency can be improved, and thus the safety and economy of the unit can be improved; however, the height difference between each burner mentioned above and its corresponding thermocouple is 50cm, but during the installation of the thermocouples, the spacing between the same group of thermocouples has a large error during the installation process, and at the same time, the height difference between each group of thermocouples and the burner after installation is uneven, which affects the accuracy of the detection. Summary of the Invention

[0005] The present invention mainly provides a boiler combustion power field temperature detection system to solve the technical problems raised in the above background technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A boiler combustion power field temperature detection system includes a furnace and a burner. The furnace is arranged in a rectangular structure. The burners are distributed on the inner walls around the furnace. Corresponding thermocouples are installed on the burners. The thermocouples are connected to the inner walls of the furnace through a connecting assembly.

[0008] Preferably, there are eight thermocouples on the inner wall of one side of the furnace, and the eight thermocouples form a group. There are four groups of thermocouples evenly distributed on the inner walls around the furnace above the burner. The eight thermocouples in each group are equidistantly distributed, and each group of eight thermocouples corresponds to eight connecting components, and the eight connecting components are equidistantly distributed laterally.

[0009] Preferably, each of the connecting components includes a connecting plate, which is arranged in an inverted L-shaped structure, and the distance between the top and the bottom of the connecting plate is 100CM. The outer wall of the connecting plate is connected to the inner wall of the furnace, and the side of the connecting plate away from the inner wall of the furnace is connected to a support plate, and the support plate is perpendicular to the connecting plate, and the distance between the support plate and the bottom of the connecting plate is 50CM. The bottom of each group of eight connecting plates is connected to a mounting plate for connecting to the inner wall of the furnace, and the mounting plate is parallel to the connecting plate, and the mounting plate is symmetrically provided with assembly holes fixed to the inner wall of the furnace.

[0010] Preferably, eight furnace temperature measuring points are equidistantly arranged horizontally above the burner, and each furnace temperature measuring point corresponds one-to-one to each thermocouple.

[0011] Preferably, each of the thermocouples is composed of a terminal box and a resistance tube, and the resistance tube connection is located at the bottom of the terminal box.

[0012] Preferably, a first through hole is formed through the connecting plate, and the inner wall diameter of the first through hole is greater than or equal to the diameter of the resistor tube.

[0013] Preferably, a second through hole is formed through the support plate, and the inner wall diameter of the second through hole is smaller than the bottom diameter of the resistor tube.

[0014] Preferably, the bottom of the resistor tube passes through the first through hole and is connected to the top of the second through hole.

[0015] Preferably, the assembly holes have built-in bolts for connecting the mounting plate to the inner wall of the furnace.

[0016] Preferably, the depth of each thermocouple inserted into the furnace is 10 cm, and each thermocouple adopts an armored sleeve structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In response to the problems in the background technology, the present application sequentially assembles eight thermocouples of the same group on the corresponding eight connecting assemblies, so that the bottom ends of the thermocouples abut against the upper surface of the support plate, so that the distance between the detection end of the bottom end of the thermocouple and the bottom end of the connecting piece is 50 cm, and the overall height of the connecting piece is 100 cm, thereby ensuring the assembly of the thermocouples, and the eight connecting assemblies are equidistantly welded on the mounting plate. When installed corresponding to the detection points on the inner side of the furnace, by aligning the bottom ends of the connecting assemblies with the burners and then fixing the connecting assemblies to the inner wall of the furnace using the mounting plate, it is possible not only to ensure that the thermocouples of the same group are equidistantly distributed, but also to ensure that the detection ends of multiple thermocouples of the same group are 50 cm away from the burners, thereby ensuring the accuracy of detection;

[0019] By abutting the bottom end of the thermocouple against the top end of the second through hole opened on the support plate, the temperature can pass through the through hole directly to the bottom end of the thermocouple, avoiding the support plate blocking the detection end of the thermocouple and ensuring the accuracy of the detection.

[0020] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall connection between a group of thermocouples and multiple connection components of the present invention;

[0023] Figure 3 It is an axonometric view of the thermocouple of the present invention;

[0024] Figure 4 A schematic diagram of multiple connection components and a mounting plate of the present invention;

[0025] Figure 5 It is a schematic diagram of the furnace of the present invention.

[0026] Description of the drawings: 1. Furnace; 2. Burner; 3. Thermocouple; 31. Terminal box; 32. Resistance tube; 4. Connecting assembly; 41. Connecting plate; 411. First through hole; 42. Support plate; 421. Second through hole; 43. Mounting plate; 44. Assembly hole. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which the present invention pertains. The terminology used herein in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] Please refer to the attached Figure 1-5 As shown, a boiler combustion power field temperature detection system includes a furnace 1 and a burner 2. The furnace 1 is arranged in a rectangular structure. The burners 2 are distributed on the inner walls around the furnace 1. Corresponding thermocouples 3 are installed on the burners 2. The thermocouples 3 are connected to the inner wall of the furnace 1 through a connecting component 4. There are eight thermocouples 3 on the inner wall of one side of the furnace 1. Eight thermocouples 3 form a group. There are four groups of thermocouples 3 evenly distributed on the inner walls around the furnace 1 above the burner 2. The eight thermocouples 3 in each group are equidistantly distributed. Each group of eight thermocouples 3 corresponds to eight connecting components 4, and the eight connecting components 4 are equidistantly distributed laterally. Eight furnace temperature measuring points are equidistantly arranged horizontally above the burner 2. Each furnace temperature measuring point Corresponding to each thermocouple 3 one by one, each connecting assembly 4 includes a connecting plate 41, and the connecting plate 41 is arranged in an inverted L-shaped structure. The distance between the top and the bottom of the connecting plate 41 is 100CM, and the outer wall of the connecting plate 41 is connected to the inner wall of the furnace 1. The side of the connecting plate 41 away from the inner wall of the furnace 1 is connected to a support plate 42, and the support plate 42 is perpendicular to the connecting plate 41. The distance between the support plate 42 and the bottom of the connecting plate 41 is 50CM. The bottom of each group of eight connecting plates 41 is connected to a mounting plate 43 for connecting to the inner wall of the furnace 1. The mounting plate 43 is parallel to the connecting plate 41, and the mounting plate 43 is symmetrically provided with assembly holes 44 fixed to the inner wall of the furnace 1. The mounting plate 43 is fixed to the inner wall of the furnace 1 through the assembly hole 44.

[0031] It should be noted that, in this embodiment, by assembling the same group of eight thermocouples 3 in sequence on the corresponding eight connecting components 4, the bottom end of the thermocouple 3 is abutted against the second through hole 421 on the upper surface of the support plate 42, and the distance between the detection end of the bottom end of the thermocouple 3 and the bottom end of the connecting component 4 is 50 cm, and the overall height of the connecting component 4 is 100 cm, thereby ensuring the assembly of the thermocouple 3, and the eight connecting components 4 are welded equidistantly above the mounting plate 43. When installed corresponding to the detection point on the inner side of the furnace 1, by aligning the bottom end of the connecting component 4 with the burner 2, and then using the mounting plate 43 to fix the connecting component 4 to the inner wall of the furnace 1, not only can the equidistant distribution between the thermocouples 3 in the same group be guaranteed, but also the distance between the detection ends of multiple thermocouples 3 in the same group and the burner 2 can be guaranteed to be 50 cm, thereby ensuring the accuracy of the detection.

[0032] See Figure 1-4 As shown, each thermocouple 3 is composed of a terminal box 31 and a resistor tube 32. The resistor tube 32 is connected to the bottom of the terminal box 31. A first through hole 411 is opened on the connecting plate 41. The inner wall diameter of the first through hole 411 is greater than or equal to the diameter of the resistor tube 32. A second through hole 421 is opened on the supporting plate 42. The inner wall diameter of the second through hole 421 is smaller than the bottom diameter of the resistor tube 32. The bottom of the resistor tube 32 passes through the first through hole 411 and is connected to the top of the second through hole 421. The built-in bolts in the assembly hole 44 are used to connect the mounting plate 43 to the inner wall of the furnace 1. The depth of each thermocouple 3 into the furnace 1 is 10 cm. Each thermocouple 3 adopts an armored sleeve structure.

[0033] It should be noted that, in this embodiment, the bottom end of the thermocouple 3 is abutted against the top end of the second through hole 421 opened on the support plate 42, so that the temperature can pass through the through hole directly to the bottom end of the thermocouple 3, thereby avoiding the support plate 42 blocking the detection end of the thermocouple 3 and ensuring the accuracy of the detection.

[0034] The specific process of the present invention is as follows:

[0035] During use: by assembling the same group of eight thermocouples 3 in sequence on the corresponding eight connecting components 4, so that the bottom end of the thermocouple 3 is in contact with the second through hole 421 on the upper surface of the support plate 42, the distance between the detection end of the bottom end of the thermocouple 3 and the bottom end of the connecting component 4 is 50 cm, and the overall height of the connecting component 4 is 100 cm, ensuring the assembly of the thermocouple 3, and the eight connecting components 4 are equidistantly welded on the mounting plate 43. When installed corresponding to the detection point on the inner side of the furnace 1, by aligning the bottom end of the connecting component 4 with the burner 2, and then using the mounting plate 43 to fix the connecting component 4 to the inner wall of the furnace 1, not only can the equidistant distribution between the thermocouples 3 in the same group be guaranteed, but also the distance between the detection ends of multiple thermocouples 3 in the same group and the burner 2 can be guaranteed to be 50 cm, thereby ensuring the accuracy of the detection.

[0036] The above description of the present invention is exemplified in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A boiler combustion power field temperature detection system, comprising a furnace (1) and a burner (2), characterized in that The furnace (1) is arranged in a rectangular structure, the burners (2) are distributed on the inner walls around the furnace (1), and corresponding thermocouples (3) are installed on the burners (2), and the thermocouples (3) are connected to the inner wall of the furnace (1) through a connecting component (4). There are eight thermocouples (3) on the inner wall of one side of the furnace (1), and eight thermocouples (3) form a group. There are four groups of thermocouples (3) evenly distributed on the inner walls around the furnace (1) above the burners (2). The eight thermocouples (3) in each group are equidistantly distributed, and each group of eight thermocouples (3) corresponds to eight connecting components (4), and the eight connecting components (4) are equidistantly distributed laterally. Each connecting component (4) includes a connecting The connecting plate (41) is provided in an inverted L-shaped structure, the distance between the top and the bottom of the connecting plate (41) is 100CM, the outer wall of the connecting plate (41) is connected to the inner wall of the furnace (1), the side of the connecting plate (41) away from the inner wall of the furnace (1) is connected to a support plate (42), the support plate (42) is perpendicular to the connecting plate (41), the distance between the support plate (42) and the bottom of the connecting plate (41) is 50CM, and the bottom of each group of eight connecting plates (41) is connected to a mounting plate (43) for connecting to the inner wall of the furnace (1), the mounting plate (43) is parallel to the connecting plate (41), and the mounting plate (43) is symmetrically provided with assembly holes (44) fixed to the inner wall of the furnace (1).

2. A boiler combustion power field temperature detection system according to claim 1, characterized in that: Eight furnace temperature measuring points are equidistantly arranged at horizontal positions above the burner (2), and each furnace temperature measuring point corresponds to each thermocouple (3) one by one.

3. A boiler combustion power field temperature detection system according to claim 1, characterized in that: Each of the thermocouples (3) is composed of a terminal box (31) and a resistance tube (32), and the resistance tube (32) is connected to the bottom of the terminal box (31).

4. A boiler combustion power field temperature detection system according to claim 1, characterized in that: A first through hole (411) is formed through the connecting plate (41), and the inner wall diameter of the first through hole (411) is greater than or equal to the diameter of the resistor tube (32).

5. A boiler combustion power field temperature detection system according to claim 1, characterized in that: A second through hole (421) is formed through the support plate (42), and the inner wall diameter of the second through hole (421) is smaller than the bottom diameter of the resistor tube (32).

6. A boiler combustion power field temperature detection system according to claim 4, characterized in that: The bottom of the resistor tube (32) passes through the first through hole (411) and is connected to the top of the second through hole (421).

7. A boiler combustion power field temperature detection system according to claim 1, characterized in that: The assembly hole (44) has built-in bolts for connecting the mounting plate (43) to the inner wall of the furnace (1).

8. A boiler combustion power field temperature detection system according to claim 1, characterized in that: The depth of each thermocouple (3) inserted into the furnace (1) is 10 cm, and each thermocouple (3) adopts an armored sleeve structure.

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