Layered arrangement structure for protecting boiler wall temperature elements

Abstract

The utility model discloses a layered arrangement structure of boiler wall temperature protection elements, which comprises a thermocouple element support, a thermocouple element laying frame and a thermocouple element laying frame fixedly connected onto the thermocouple element support, a plurality of thermocouple elements are arranged in the thermocouple element laying frame in a penetrating manner, one end of each thermocouple element is connected with a power plant boiler, and the other end of each thermocouple element is connected with a power plant boiler. The other ends of the thermocouple elements penetrate through the thermocouple element laying frame and are respectively connected with a plurality of signal cables, and the other ends of the signal cables are all connected with a signal cable control room. According to the layered arrangement structure of the boiler wall temperature protection elements, the problem that the insulating layer of the signal cable is heated and aged in the boiler operation of a power plant is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler equipment, and in particular relates to a layered arrangement structure for protecting boiler wall temperature elements. Background Art

[0002] In power plant boiler operations, conventional boiler wall temperature elements utilize armored thermocouples with limited-length extension cables. The armored portion of the armored thermocouple is located within the boiler's external insulation and routed to the exterior of the boiler via a cable tray. In some cases, the armored portion is located in a cable tray outside the boiler insulation. Both the thermocouple extension cable and the compensating cable used to transmit the temperature signal measured by the thermocouple to the control system are located in a cable tray outside the boiler insulation. Because the cable trays inside and outside the boiler insulation are continuous, high-temperature air can flow from the boiler's high-temperature areas through the cable tray. Furthermore, the metal armor of the thermocouple element also allows for heat conduction. Both of these situations adversely affect the thermocouple extension cable and compensating cable within the same cable tray, potentially causing thermal aging of the cable insulation and preventing the control system's temperature display from accurately reflecting operating conditions. Utility Model Content

[0003] The purpose of the utility model is to provide a layered arrangement structure for protecting boiler wall temperature elements, thereby solving the problem of heat aging of the insulation layer of a signal cable during boiler operation in a power plant.

[0004] The technical solution adopted by the present invention is a layered arrangement structure for protecting boiler wall temperature elements, including a thermocouple element support, a thermocouple element laying rack fixedly connected to the thermocouple element support, a plurality of thermocouple elements passing through the thermocouple element laying rack, one end of the plurality of thermocouple elements are connected to the power plant boiler, the other ends of the plurality of thermocouple elements pass through the thermocouple element laying rack and are respectively connected to a plurality of signal cables, and the other ends of the plurality of signal cables are connected to the signal cable control room.

[0005] The utility model is also characterized in that:

[0006] The cross-section of the thermocouple element laying rack is "J"-shaped. One end of several thermocouple elements passes through the curved section of the thermocouple element laying rack and is connected to the boiler of the power plant. One end of several thermocouple elements passes through the straight section side wall of the thermocouple element laying rack and is connected to several signal cables one by one.

[0007] A plurality of junction boxes are fixedly connected to the outer wall of the signal cable laying frame in parallel. One end of a plurality of thermocouple elements passes through the straight section side wall of the thermocouple element laying frame and is connected to a plurality of signal cables in the plurality of junction boxes in a one-to-one correspondence.

[0008] The thermocouple element laying rack includes a thermocouple element laying rack frame, and a thermocouple element laying rack cover is fixedly connected to the top of the thermocouple element laying rack frame through a plurality of first bolts.

[0009] The signal cable laying rack includes a signal cable laying rack frame, and a signal cable laying rack cover is fixedly connected to the top of the signal cable laying rack frame through a plurality of second bolts.

[0010] The junction box includes a box body. One ends of a plurality of thermocouple elements penetrate through the box body and are connected to a plurality of signal cables in one-to-one correspondence. A fixing column is fixedly connected to the outer wall of the box body. The fixing column is in a hollow cylindrical shape, and the other end of the fixing column is fixedly connected to the signal cable laying rack frame. A connecting rope is fixedly connected to the outer wall of the fixing column, and the other end of the connecting rope is fixedly connected to a junction box cover body, and the junction box cover body cooperates with the box body.

[0011] The beneficial effects of the present utility model are:

[0012] The hierarchical layout structure for protecting the boiler wall temperature element provided by the present utility model effectively restricts two heat transfer methods of convection and heat conduction, achieves the effects of protecting the signal cable and extending the service life of the signal cable, reduces the long-term operation and maintenance costs of the power plant, improves the reliability and accuracy of the boiler wall temperature measurement points, and is beneficial to the long-term safe and stable operation of the generator set. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the hierarchical layout structure for protecting the boiler wall temperature element of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the thermocouple element laying rack of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the signal cable laying rack of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the junction box of the present utility model.

[0017] In the figure, 1. Thermocouple element support, 2. Thermocouple element laying rack, 21. Thermocouple element laying rack frame, 22. First bolt, 23. Thermocouple element laying rack cover, 3. Thermocouple element, 4. Power plant boiler, 5. Signal cable, 6. Signal cable support, 7. Signal cable laying rack, 71. Signal cable laying rack frame, 72. Second bolt, 73. Signal cable laying rack cover, 8. Signal cable control room, 9. Junction box, 91. Box body, 92. Fixing column, 93. Connecting rope, 94. Junction box cover body. Detailed Description of the Invention

[0018] The present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0019] The utility model provides a layered arrangement structure for protecting boiler wall temperature elements, such as Figure 1 As shown, it includes a thermocouple element support 1, a thermocouple element laying rack 2 is fixedly connected to the thermocouple element support 1, a plurality of thermocouple elements 3 are passed through the thermocouple element laying rack 2, one end of the plurality of thermocouple elements 3 is connected to the power plant boiler 4, the other ends of the plurality of thermocouple elements 3 pass through the thermocouple element laying rack 2 and are respectively connected to a plurality of signal cables 5, the other ends of the plurality of signal cables 5 are connected to the signal cable control room 8; the cross section of the thermocouple element laying rack 2 is "J" shaped, One end of a plurality of thermocouple elements 3 passes through the curved section of the thermocouple element laying rack 2 and is connected to the power plant boiler 4. One end of a plurality of thermocouple elements 3 passes through the straight section side wall of the thermocouple element laying rack 2 and is connected to a plurality of signal cables 5 in a one-to-one correspondence. A plurality of junction boxes 9 are fixedly connected to the outer wall of the signal cable laying rack 7 in parallel. One end of a plurality of thermocouple elements 3 passes through the straight section side wall of the thermocouple element laying rack 2 and is connected to a plurality of signal cables 5 in a one-to-one correspondence inside the plurality of junction boxes 9. Figure 2 As shown, the thermocouple element laying rack 2 includes a thermocouple element laying rack frame 21, and a thermocouple element laying rack cover 23 is fixed to the top of the thermocouple element laying rack frame 21 through a plurality of first bolts 22. When a thermocouple element fails, the thermocouple element laying rack 2 can be opened for maintenance by removing the plurality of first bolts 22. Figure 3 As shown, the signal cable laying rack 7 includes a signal cable laying rack frame 71, and a signal cable laying rack cover 73 is fixed to the top of the signal cable laying rack frame 71 through a plurality of second bolts 72. Figure 4 As shown, the junction box 9 includes a box body 91, one end of a plurality of thermocouple elements 3 passes through the box body 91 and is connected one-to-one with a plurality of signal cables 5, a fixing column 92 is fixedly connected to the outer wall of the box body 91, the fixing column 92 is hollow cylindrical, and the other end of the fixing column 92 is fixedly connected to the signal cable laying frame 71, a connecting rope 93 is fixedly connected to the outer wall of the fixing column 92, and the other end of the connecting rope 93 is fixedly connected to the junction box cover 94, and the junction box cover 94 cooperates with the box body 91.

[0020] The utility model provides a layered arrangement structure for protecting boiler wall temperature elements, and its working principle is: by arranging a thermocouple element laying rack 2 and a signal cable laying rack 7, the thermocouple elements and signal cables in the traditional arrangement are laid separately, thereby limiting the two heat transfer modes of convection and heat conduction, thereby achieving the effect of protecting the signal cables and extending the service life of the signal cables.

[0021] Example 1

[0022] The layered arrangement structure of the boiler wall temperature protection element proposed in this embodiment is as follows: Figure 1As shown in the figure, it includes a thermocouple element support 1, on which a thermocouple element laying rack 2 is fixedly connected. A number of thermocouple elements 3 are passed through the thermocouple element laying rack 2. One ends of the number of thermocouple elements 3 are all connected to the power plant boiler 4, and the other ends of the number of thermocouple elements 3 penetrate through the thermocouple element laying rack 2 and are respectively connected to a number of signal cables 5. The other ends of the number of signal cables 5 are all connected to the signal cable control room 8.

[0023] Embodiment 2

[0024] The hierarchical layout structure for protecting the boiler wall temperature elements proposed in this embodiment is as Figure 1 shown, including a thermocouple element support 1, on which a thermocouple element laying rack 2 is fixedly connected. A number of thermocouple elements 3 are passed through the thermocouple element laying rack 2. One ends of the number of thermocouple elements 3 are all connected to the power plant boiler 4, and the other ends of the number of thermocouple elements 3 penetrate through the thermocouple element laying rack 2 and are respectively connected to a number of signal cables 5. The other ends of the number of signal cables 5 are all connected to the signal cable control room 8; the cross-section of the thermocouple element laying rack 2 is in the shape of "J". One ends of the number of thermocouple elements 3 penetrate through the bent section of the thermocouple element laying rack 2 and are connected to the power plant boiler 4, and one ends of the number of thermocouple elements 3 penetrate through the side wall of the straight section of the thermocouple element laying rack 2 and are correspondingly connected to a number of signal cables 5 one by one; a number of junction boxes 9 are fixedly connected side by side on the outer wall of the signal cable laying rack 7. One ends of the number of thermocouple elements 3 penetrate through the side wall of the straight section of the thermocouple element laying rack 2 and are correspondingly connected to a number of signal cables 5 one by one in the number of junction boxes 9.

[0025] Embodiment 3

[0026] The hierarchical layout structure for protecting the boiler wall temperature elements proposed in this embodiment is as Figure 1 shown, including a thermocouple element support 1, on which a thermocouple element laying rack 2 is fixedly connected. A number of thermocouple elements 3 are passed through the thermocouple element laying rack 2. One ends of the number of thermocouple elements 3 are all connected to the power plant boiler 4, and the other ends of the number of thermocouple elements 3 penetrate through the thermocouple element laying rack 2 and are respectively connected to a number of signal cables 5. The other ends of the number of signal cables 5 are all connected to the signal cable control room 8; the cross-section of the thermocouple element laying rack 2 is in the shape of "J". One ends of the number of thermocouple elements 3 penetrate through the bent section of the thermocouple element laying rack 2 and are connected to the power plant boiler 4, and one ends of the number of thermocouple elements 3 penetrate through the side wall of the straight section of the thermocouple element laying rack 2 and are correspondingly connected to a number of signal cables 5 one by one; a number of junction boxes 9 are fixedly connected side by side on the outer wall of the signal cable laying rack 7. One ends of the number of thermocouple elements 3 penetrate through the side wall of the straight section of the thermocouple element laying rack 2 and are correspondingly connected to a number of signal cables 5 one by one in the number of junction boxes 9. As Figure 2As shown, the thermocouple element laying rack 2 includes a thermocouple element laying rack frame 21 , and a thermocouple element laying rack cover 23 is fixed to the top of the thermocouple element laying rack frame 21 through a plurality of first bolts 22 .

[0027] Example 4

[0028] The layered arrangement structure of the boiler wall temperature protection element proposed in this embodiment is as follows: Figure 1 As shown, it includes a thermocouple element support 1, a thermocouple element laying rack 2 is fixedly connected to the thermocouple element support 1, a plurality of thermocouple elements 3 are passed through the thermocouple element laying rack 2, one end of the plurality of thermocouple elements 3 is connected to the power plant boiler 4, the other ends of the plurality of thermocouple elements 3 pass through the thermocouple element laying rack 2 and are respectively connected to a plurality of signal cables 5, the other ends of the plurality of signal cables 5 are connected to the signal cable control room 8; the cross section of the thermocouple element laying rack 2 is "J" shaped, One end of a plurality of thermocouple elements 3 passes through the curved section of the thermocouple element laying rack 2 and is connected to the power plant boiler 4. One end of a plurality of thermocouple elements 3 passes through the straight section side wall of the thermocouple element laying rack 2 and is connected to a plurality of signal cables 5 in a one-to-one correspondence. A plurality of junction boxes 9 are fixedly connected to the outer wall of the signal cable laying rack 7 in parallel. One end of a plurality of thermocouple elements 3 passes through the straight section side wall of the thermocouple element laying rack 2 and is connected to a plurality of signal cables 5 in a one-to-one correspondence inside the plurality of junction boxes 9. Figure 2 As shown, the thermocouple element laying rack 2 includes a thermocouple element laying rack frame 21, and a thermocouple element laying rack cover 23 is fixed to the top of the thermocouple element laying rack frame 21 through a plurality of first bolts 22. Figure 3 As shown, the signal cable laying rack 7 includes a signal cable laying rack frame 71, and a signal cable laying rack cover 73 is fixed to the top of the signal cable laying rack frame 71 through a plurality of second bolts 72. Figure 4 As shown, the junction box 9 includes a box body 91, one end of a plurality of thermocouple elements 3 passes through the box body 91 and is connected one-to-one with a plurality of signal cables 5, a fixing column 92 is fixedly connected to the outer wall of the box body 91, the fixing column 92 is hollow cylindrical, and the other end of the fixing column 92 is fixedly connected to the signal cable laying frame 71, a connecting rope 93 is fixedly connected to the outer wall of the fixing column 92, and the other end of the connecting rope 93 is fixedly connected to the junction box cover 94, and the junction box cover 94 cooperates with the box body 91.

Claims

1. A layered layout structure for protecting boiler wall temperature elements, characterized in that, The invention comprises a thermocouple element support (1), a thermocouple element laying frame (2) is fixedly connected to the thermocouple element support (1), a plurality of thermocouple elements (3) are inserted into the thermocouple element laying frame (2), one end of the plurality of thermocouple elements (3) are connected to a power plant boiler (4), the other end of the plurality of thermocouple elements (3) passes through the thermocouple element laying frame (2) and is respectively connected to a plurality of signal cables (5), and the other end of the plurality of signal cables (5) are connected to a signal cable control room (8).

2. The layered arrangement structure for protecting the boiler wall temperature element according to claim 1, wherein, The cross section of the thermocouple element laying rack (2) is "J"-shaped, one end of a plurality of the thermocouple elements (3) passes through the curved section of the thermocouple element laying rack (2) and is connected to the power plant boiler (4), and one end of a plurality of the thermocouple elements (3) passes through the straight section side wall of the thermocouple element laying rack (2) and is connected to a plurality of the signal cables (5) in a one-to-one correspondence.

3. The hierarchical layout structure for protecting the boiler wall temperature element according to claim 2, characterized in that, It also includes a signal cable laying rack (7), wherein a plurality of junction boxes (9) are fixedly connected side by side to the outer wall of the signal cable laying rack (7), and one end of a plurality of the thermocouple elements (3) passes through the straight section side wall of the thermocouple element laying rack (2) and is connected to a plurality of the signal cables (5) in a one-to-one correspondence in the plurality of the junction boxes (9).

4. The hierarchical layout structure for protecting the boiler wall temperature element according to claim 3, characterized in that The thermocouple element laying rack (2) comprises a thermocouple element laying rack frame (21), and a thermocouple element laying rack cover (23) is fixedly connected to the top of the thermocouple element laying rack frame (21) via a plurality of first bolts (22).

5. The layered arrangement structure for protecting the boiler wall temperature element according to claim 4, characterized in that, The signal cable laying rack (7) comprises a signal cable laying rack frame (71), and a signal cable laying rack cover (73) is fixedly connected to the top of the signal cable laying rack frame (71) via a plurality of second bolts (72).

6. The layered arrangement structure for protecting the boiler wall temperature element according to claim 5, wherein The junction box (9) includes a box body (91), one end of the plurality of thermocouple elements (3) passes through the box body (91) and is connected to a plurality of signal cables (5) in a one-to-one correspondence, a fixing column (92) is fixedly connected to the outer wall of the box body (91), the fixing column (92) is in the shape of a hollow column, the other end of the fixing column (92) is fixedly connected to the signal cable laying frame (71), a connecting rope (93) is fixedly connected to the outer wall of the fixing column (92), the other end of the connecting rope (93) is fixedly connected to the junction box cover (94), and the junction box cover (94) cooperates with the box body (91).

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