Novel thermal power plant boiler on-line expansion indicator

Abstract

The utility model relates to the technical field of thermal power generation, and particularly discloses a novel thermal power plant boiler online expansion indicator which comprises a triangular block. A triangular groove is formed in the triangular block; laser range finders are fixedly connected into the triangular grooves in a mutually perpendicular manner; a plurality of hidden grooves are formed in the triangular block; a positioning pin is inserted into the hidden groove; by pulling the multiple sets of supporting rods and connecting plates which are connected end to end, a linear structure can be formed to support the triangular block, so that the triangular block is more convenient and safer to initially position, meanwhile, the supporting rods and the connecting plates in three directions can be used for fixing in two directions and detecting expansion data of the boiler in one direction, and the detection accuracy is improved. Through fixation in two directions, measurement of the laser range finder is more accurate, and the problems that an existing mechanical expansion indicator cannot detect expansion data in real time, and collection of detection data is troublesome and not safe and efficient enough are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generation, in particular to a novel online expansion indicator for a thermal power plant boiler. Background Art

[0002] At present, in the actual production of thermal power plants, expansion indicators are used to monitor the expansion of thick-walled pressure vessels such as steam drums, headers, and boiler bodies during the ignition and pressurization process. Through them, deformation of steam equipment caused by improper ignition and pressurization or poor installation and maintenance can be discovered in a timely manner, and cracks and leaks caused by uneven expansion can be prevented. The boiler expansion indicator can monitor the three-dimensional displacement of the boiler, including horizontal displacement, vertical displacement, and axial displacement, so that timely measures can be taken to avoid accidents.

[0003] However, the above-mentioned publicly available solutions have the following shortcomings: the expansion indicators currently in use are simple devices consisting of a two-dimensional panel and a telescopic rod for on-site display. Data must be manually recorded and then analyzed to guide boiler operation. However, expansion indicators can deform, wear, corrode, and age over long periods of use. Some expansion indicators are located at high or suspended positions, making them difficult to operate, resulting in inaccurate data recording and the inability to read data. Some expansion indicators are also installed in locations that are not convenient for operators to record, resulting in missing data and a failure to ensure safe boiler operation. Utility Model Content

[0004] The utility model aims to solve the technical problem that the expansion indicator actually used is only a simple device composed of a two-dimensional panel and a telescopic rod for on-site display, and data needs to be manually recorded and then judged through analysis to guide the operation of the boiler. However, the expansion indicator will deform, wear, corrode and age during long-term use. Some expansion indicators are located at a high position or suspended in the air, which is inconvenient to operate, resulting in inaccurate data recording and inability to read the data. Some expansion indicators are installed in positions that are not convenient for operators to record, resulting in missing data and failure to ensure safe operation of the boiler. The utility model provides a new online expansion indicator for thermal power plant boilers.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model discloses a novel online expansion indicator for boilers in thermal power plants, comprising a triangular block; a triangular groove is provided in the triangular block; laser rangefinders are fixedly connected perpendicularly to each other in the triangular groove; a plurality of hidden grooves are provided in the triangular block; positioning pins are inserted in the hidden grooves; a plurality of groups of end-to-end connected support rods and connecting plates are sleeved on the positioning pins; the support rods and connecting plate brackets are rotatably connected.

[0007] Furthermore, a screw rod is threadedly connected to a hole on the triangular block; a second avoidance rod is sleeved on the screw rod; a third nut pair is inserted into the second avoidance rod; and the first avoidance rod is sleeved on the third nut pair.

[0008] Furthermore, a second nut pair is inserted into the lower end of the first avoidance rod; and a telescopic sleeve is sleeved on the second nut pair.

[0009] Furthermore, a first nut pair is inserted into the lower end of the telescopic sleeve; and a fixed base is sleeved on the first nut pair.

[0010] Furthermore, the fixed base is provided with a plurality of through holes.

[0011] Furthermore, a threading groove is provided in the triangular groove corresponding to the laser rangefinder.

[0012] The utility model provides a novel online expansion indicator for thermal power plant boilers, which has the following beneficial effects:

[0013] 1. The utility model forms a straight structure for supporting the triangular block by pulling multiple groups of support rods and connecting plates connected end to end, thereby making it more convenient and safer to initially locate the position of the triangular block. At the same time, the support rods and connecting plates in three directions can be used for fixing in two directions and for detecting the expansion data of the boiler in one direction. The two-directional fixation makes the measurement of the laser rangefinder more accurate. At the same time, it can also be used in conjunction with the three-way display panel to achieve precise fixed use. The three laser rangefinders can also be removed and fixed on the boiler, and then vertically aligned with the three surfaces of the triangular groove to monitor the expansion data of the boiler. It only needs to use the triangular block as a fixing object, thereby realizing multiple combinations for fixing and use, so that it can be flexibly used according to the actual detection position of the boiler, solving the problems of the existing mechanical expansion indicator that cannot detect expansion data in real time and the collection of detection data is troublesome, unsafe and inefficient.

[0014] 2. The utility model uses a screw to make the second avoidance rod and the triangular block detachable, and then the third nut pair cooperates with the first avoidance rod and the second avoidance rod to bend and deform for avoidance, thereby being able to monitor the expansion in a complex environment of the boiler, making installation and fixation more convenient, and solving the problem of inconvenient installation of existing mechanical expansion indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings;

[0016] Figure 1 This is a first axonometric structural diagram of the present invention;

[0017] Figure 2 This is a second axonometric structural diagram of the present invention;

[0018] Figure 3 This is a third axonometric structural diagram of the present invention.

[0019] Explanation of the numbers in the figure: 1. Fixed base; 2. First nut pair; 3. Telescopic sleeve; 4. Second nut pair; 5. First avoidance rod; 6. Second avoidance rod; 7. Screw; 8. Triangular block; 9. Triangular groove; 10. Laser rangefinder; 11. Threading groove; 12. Hidden groove; 13. Positioning pin; 14. Support rod; 15. Connecting plate; 16. Third nut pair. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0023] See also Figure 1-3As shown, a novel online expansion indicator for boilers in thermal power plants comprises a triangular block 8; a triangular groove 9 is provided in the triangular block 8; a laser rangefinder 10 is fixedly connected perpendicularly to each other in the triangular groove 9; a plurality of hidden grooves 12 are provided in the triangular block 8; a positioning pin 13 is inserted into the hidden groove 12; a plurality of groups of end-to-end connected support rods 14 and connecting plates 15 are sleeved on the positioning pin 13; the support rods 14 and connecting plates 15 are rotatably connected to each other; when working, a straight line structure can be formed to support the triangular block 8 by pulling the plurality of groups of end-to-end connected support rods 14 and connecting plates 15, so that it is more convenient and safer to initially locate the position of the triangular block 8, and at the same time, the support rods 14 and connecting plates 15 in three directions are connected. The plate 15 can be used for fixing in two directions and for detecting the expansion data of the boiler in one direction. By fixing in two directions, the measurement of the laser rangefinder 10 is made more accurate. At the same time, it can also be used in conjunction with the three-way display panel to achieve precise fixed use. The three laser rangefinders 10 can also be removed and fixed on the boiler, and then vertically aligned with the three surfaces of the triangular groove 9 to monitor the expansion data of the boiler. It is only necessary to use the triangular block 8 as a fixing object, thereby achieving multiple combinations for fixed use, so that it can be flexibly used according to the actual detection position of the boiler, solving the problems of the existing mechanical expansion indicator being unable to detect expansion data in real time and the troublesome, unsafe and inefficient collection of detection data.

[0024] The triangular block 8 is threadedly connected with a screw rod 7 through a hole; the screw 7 is sleeved with a second avoidance rod 6; the second avoidance rod 6 is inserted with a third nut pair 16; the third nut pair 16 is sleeved with the first avoidance rod 5; during operation, the second avoidance rod 6 and the triangular block 8 are made detachable by the screw rod 7, and then the third nut pair 16 cooperates with the first avoidance rod 5 and the second avoidance rod 6 to bend and deform for avoidance, thereby adapting to the complex environment of the boiler to monitor expansion, making installation and fixation more convenient, and solving the problem of inconvenient installation of the existing mechanical expansion indicator.

[0025] A second nut pair 4 is inserted into the lower end of the first avoidance rod 5; a telescopic sleeve 3 is sleeved on the second nut pair 4; during operation, the height of the laser rangefinder 10 can be adjusted by adjusting the telescopic distance of the telescopic sleeve 3, thereby adapting to expansion detection of boilers at different heights, solving the problem of inconvenient high-place installation of existing mechanical expansion indicators.

[0026] The lower end of the telescopic sleeve 3 is plugged with a first nut pair 2; a fixed base 1 is sleeved on the first nut pair 2; when in operation, it is fixed to the ground or other fixed objects through the fixed base 1, thereby achieving a higher strength and more stable fixation, reducing the vibration interference of the laser rangefinder 10, thereby making the detection data more accurate, and solving the problem that the detection accuracy of the existing mechanical expansion indicator cannot be higher.

[0027] The fixed base 1 is provided with a plurality of through holes. When in operation, the fixed base 1 can be fixed to the ground or other fixed objects by fasteners through the plurality of through holes, thereby completing the long-term stable support and fixation of the laser rangefinder 10, thereby effectively reducing the error in detecting expansion, and solving the problem of error in the installation of existing mechanical expansion indicators.

[0028] A threading groove 11 is provided in the triangular groove 9 corresponding to the laser rangefinder 10. During operation, the data line of the laser rangefinder 10 can be conveniently led out of the triangular block 8 through the threading groove 11, thereby facilitating relative connection and fixation between the first avoidance rod 5 and the telescopic sleeve 3, and facilitating the export of detected data, thereby accurately detecting the expansion state of the boiler, preventing risks and solving problems in a timely manner, and solving the problem that the existing mechanical expansion indicator requires manual data recording, resulting in low timeliness and high risk.

[0029] By adopting the above scheme, when the utility model is in use, a straight structure can be formed to support the triangular block 8 by pulling multiple sets of support rods 14 and connecting plates 15 connected end to end, so that it is more convenient and safer to initially locate the position of the triangular block 8. At the same time, the support rods 14 and connecting plates 15 in three directions can be used for fixing in two directions and for detecting the expansion data of the boiler in one direction. By fixing in two directions, the measurement of the laser rangefinder 10 is made more accurate. At the same time, it can also be used in conjunction with the three-way display panel to achieve precise fixed use. The three laser rangefinders 10 can also be removed and fixed on the boiler, and then vertically fixed. The expansion data of the boiler can be monitored by aligning the three surfaces of the triangular groove 9, and the triangular block 8 can be used as a fixed object, thereby realizing a variety of combination methods for fixed use, so that it can be flexibly used according to the actual detection position of the boiler, solving the problem that the existing mechanical expansion indicator cannot detect the expansion data in real time and the collection of detection data is troublesome and not safe and efficient; the second avoidance rod 6 and the triangular block 8 are made detachable by the screw 7, and then the third nut pair 16 cooperates with the first avoidance rod 5 and the second avoidance rod 6 to bend and deform for avoidance, so that the expansion can be monitored in the complex environment of the boiler, so that The installation and fixation are more convenient, which solves the problem of inconvenient installation of the existing mechanical expansion indicator; the height of the laser rangefinder 10 can be adjusted by adjusting the telescopic distance of the telescopic sleeve 3, so as to adapt to the expansion detection of the boiler at different heights, which solves the problem of inconvenient high-place installation of the existing mechanical expansion indicator; the base 1 is fixed to the ground or other fixed objects to achieve higher strength and more stable fixation, so that the vibration interference of the laser rangefinder 10 is reduced, thereby making the detection data more accurate, and solving the problem that the detection accuracy of the existing mechanical expansion indicator cannot be higher; the laser rangefinder 10 can be tightened through multiple through holes. The firmware is fixed to the ground or other fixed objects to complete the long-term stable support and fixation of the laser rangefinder 10, thereby effectively reducing the error in detecting expansion and solving the problem of error in the installation of the existing mechanical expansion indicator; the data line of the laser rangefinder 10 can be conveniently led out from the triangular block 8 through the threading groove 11, so as to facilitate the relative connection and fixation between the first avoidance rod 5 and the telescopic sleeve 3, and facilitate the export of the detected data, thereby accurately detecting the expansion state of the boiler, preventing risks and solving problems in a timely manner, and solving the problem of low timeliness and high risk caused by the need for manual data recording of the existing mechanical expansion indicator.

[0030] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A new type of online expansion indicator for thermal power plant boilers, characterized by: The invention comprises a triangular block (8); a triangular groove (9) is provided in the triangular block (8); a laser rangefinder (10) is fixedly connected perpendicularly to each other in the triangular groove (9); a plurality of hidden grooves (12) are provided in the triangular block (8); a positioning pin (13) is inserted in the hidden groove (12); a plurality of groups of end-to-end connected support rods (14) and connecting plates (15) are sleeved on the positioning pin (13); the support rods (14) and connecting plates (15) are rotatably connected to the bracket.

2. The novel online expansion indicator for thermal power plant boilers according to claim 1 is characterized by: The triangular block (8) has a hole threadedly connected to a screw rod (7); the screw rod (7) is sleeved with a second avoidance rod (6); the second avoidance rod (6) is plugged with a third nut pair (16); the third nut pair (16) is sleeved with a first avoidance rod (5).

3. The novel online expansion indicator for thermal power plant boilers according to claim 2 is characterized by: A second nut pair (4) is inserted into the lower end of the first avoidance rod (5); and a telescopic sleeve (3) is sleeved on the second nut pair (4).

4. The novel online expansion indicator for thermal power plant boilers according to claim 3 is characterized by: A first nut pair (2) is inserted into the lower end of the telescopic sleeve (3); a fixed base (1) is sleeved on the first nut pair (2).

5. The novel online expansion indicator for thermal power plant boilers according to claim 4 is characterized in that: The fixed base (1) is provided with a plurality of through holes.

6. The novel online expansion indicator for thermal power plant boilers according to claim 5 is characterized by: A threading groove (11) is provided in the triangular groove (9) corresponding to the laser rangefinder (10).

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