Boiler heating surface tube bundle fixing device

Abstract

The utility model belongs to the technical field of coal-fired generator sets, and discloses a boiler heating surface tube bundle fixing device. The boiler heating surface tube bundle fixing device comprises two tube clamp bodies arranged oppositely and a locking assembly, each tube clamp body is provided with at least two arc-shaped clamping plates, the arc-shaped clamping plates are used for abutting against a pipeline, and the two tube clamp bodies are connected through a fastening assembly; the locking assembly comprises a first positioning plate and a second positioning plate, the first positioning plate and the second positioning plate are connected to the two ends of the fastening assembly correspondingly, and the first positioning plate and the second positioning plate abut against the sides, away from the pipeline, of the two pipe clamp bodies correspondingly. According to the boiler heating surface tube bundle fixing device, the tube bundle can be clamped and fixed from the two sides of the tube bundle through the tube clamp bodies, so that the tube bundle is stabilized, the two tube clamp bodies can be positioned from the two sides of the tube bundle through the locking assembly, the firmness of the tube clamp bodies is ensured, and the tube bundle fixing effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal-fired generating unit technical field especially relates to a boiler heating surface tube row fixing device. BACKGROUND

[0002] Supercritical coal-fired generating unit is a kind of high-efficiency, environmentally-friendly power generation equipment composed of high-temperature, high-pressure boiler and turbine, and its core is to increase the pressure and temperature of water vapor above supercritical parameters to achieve higher thermal efficiency and lower pollutant emissions. High-temperature reheater is a key component in supercritical coal-fired generating unit, which is mainly used to increase steam temperature to ensure the thermal efficiency and operating stability of the unit. The stability of the tube row during operation is crucial to the entire generating unit.

[0003] To improve the stability of the tube row during operation, a sub-mother buckle type tube clamp structure is usually provided on the tube row, which is mechanically connected to fix the tube row. However, this tube clamp structure is prone to cracking, loosening and other problems under long-term high temperature, high pressure and complex thermal stress, which affects the stability and safety of the high-temperature reheater operation.

[0004] Therefore, it is urgent to design a tube clamp structure to solve the above problems in the prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a boiler heating surface tube row fixing device, which is simple in structure, easy to install and can effectively fix the tube row.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a boiler heating surface tube row fixing device, comprising:

[0008] Two tube clamp bodies are arranged opposite to each other, the tube clamp body has at least two arc-shaped clamping plates, the arc-shaped clamping plate is used to abut against the pipe, and the two tube clamp bodies are connected through a fastening assembly.

[0009] The locking assembly comprises a first positioning plate and a second positioning plate, the first positioning plate and the second positioning plate are respectively connected to the two ends of the fastening assembly, and the first positioning plate and the second positioning plate are respectively abutted on one side of the two tube clamp bodies away from the pipe.

[0010] As a preferred, a connecting end plate is arranged between adjacent two arc-shaped clamping plates, and the fastening assembly is provided in the connecting end plate.

[0011] As preferably, the locking assembly further comprises a first filling plate and a second filling plate, the first filling plate is clamped between the adjacent first positioning plate and the pipe clamp body, and the second filling plate is clamped between the adjacent second positioning plate and the pipe clamp body.

[0012] The first filling plate and the second filling plate are both provided with grooves, the bottom surface of the grooves is in abutment with the arc-shaped clamping plate, the side of the first filling plate away from the pipeline is in abutment with the first positioning plate, and the side of the second filling plate away from the pipeline is in abutment with the second positioning plate.

[0013] As preferably, the fastening assembly is arranged in the convex part between the two adjacent grooves.

[0014] As preferably, the boiler heating surface tube row fixing device further comprises a support, the support is arranged on the pipeline, and the pipe clamp body is in abutment with the support in the vertical direction.

[0015] As preferably, the lower end surface of the pipe clamp body and the locking assembly in the vertical direction is flush.

[0016] As preferably, the pipe clamp body is provided with a butt joint end plate at both ends in the length direction, and the butt joint end plates of the two pipe clamp bodies are connected through the fastening assembly.

[0017] As preferably, the boiler heating surface tube row fixing device further comprises a monitoring unit, the monitoring unit comprises a temperature sensor, the temperature sensor is arranged on the locking assembly, and the temperature sensor is used for detecting the temperature of the pipe clamp body.

[0018] As preferably, the monitoring unit further comprises a stress sensor, the stress sensor is arranged on the locking assembly, and the stress sensor is used for detecting the stress of the pipe clamp body.

[0019] As preferably, the side of the arc-shaped clamping plate, which is towards the pipeline, is provided with a flexible gasket.

[0020] The boiler heating surface tube row fixing device has the advantages that:

[0021] The boiler heating surface tube bank fixing device provided by the utility model, including two pipe clamp bodies and locking assemblies, since the pipe clamp body has at least two arc-shaped clamping plates, the arc-shaped clamping plates are used for abutting against the pipelines in the tube bank, and the two pipe clamp bodies are connected through the fastening assembly, therefore the two pipe clamp bodies can clamp and fix the tube bank from the two sides of the tube bank, so that the tube bank is stabilized, since the first positioning plate and the second positioning plate in the locking assembly respectively abut on the sides of the two pipe clamp bodies away from the pipelines, and the first positioning plate and the second positioning plate are respectively connected to the two ends of the fastening assembly, therefore the first positioning plate and the second positioning plate keep the relative position fixed, the first positioning plate and the second positioning plate can play the positioning role on the two pipe clamp bodies from the two sides of the tube bank, the firmness of the pipe clamp body is ensured, and therefore the fixing effect on the tube bank is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the boiler heating surface tube bank fixing device provided by the utility model specific embodiment's plan view;

[0023] Figure 2 It is the boiler heating surface tube bank fixing device provided by the utility model specific embodiment's side view.

[0024] In the drawing:

[0025] 100-pipeline;

[0026] 1-pipe clamp body;11-arc-shaped clamping plate;12-connection end plate;13-butting end plate;

[0027] 2-locking assembly;21-first positioning plate;22-second positioning plate;23-first filling plate;231-groove;232-convex part;24-second filling plate;

[0028] 3-support;

[0029] 4-fastening assembly;41-screw;42-first nut;43-second nut. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0031] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements internal communication or two element's mutual action relation.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0033] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", "left" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] As Figure 1 And Figure 2The utility model provides a kind of boiler heating surface tube row fixing device, the boiler heating surface tube row fixing device includes two pipe clamp bodies 1 and locking assembly 2 of opposite arrangement, pipe clamp body 1 has at least two arc clamping plates 11, arc clamping plate 11 is used to abut with pipeline 100, two pipe clamp bodies 1 are connected by fastening assembly 4;Locking assembly 2 includes first positioning plate 21 and second positioning plate 22, first positioning plate 21 and second positioning plate 22 are respectively connected at the two ends of fastening assembly 4, and first positioning plate 21 and second positioning plate 22 are respectively abut on the side of two pipe clamp bodies 1 deviating from pipeline 100.In this embodiment, since pipe clamp body 1 has at least two arc clamping plates 11, arc clamping plate 11 is used to abut with the pipeline 100 in tube row, and two pipe clamp bodies 1 are connected by fastening assembly 4 opposite, so two pipe clamp bodies 1 can be clamped and fixed from the two sides of tube row, so that the tube row is stabilized;Since first positioning plate 21 and second positioning plate 22 in locking assembly 2 are respectively attached to the side of two pipe clamp bodies 1 deviating from pipeline 100, and first positioning plate 21 and second positioning plate 22 are respectively connected at the two ends of fastening assembly 4, first positioning plate 21 and second positioning plate 22 keep relative position fixed, first positioning plate 21 and second positioning plate 22 can play the positioning role to two pipe clamp bodies 1 from the two sides of tube row, ensure the firmness of pipe clamp body 1, to further improve the fixing effect of tube row.

[0035] Specifically, pipe clamp body 1 is made of high-temperature-resistant and high-strength alloy, for example, pipe clamp body 1 is made of precipitation-hardening nickel-based alloy Inconel 617, which has excellent mechanical properties and oxidation resistance in high-temperature environment, and can ensure the high-temperature resistance and creep resistance of pipe clamp body 1.

[0036] It can be understood that the number of arc clamping plates 11 on pipe clamp body 1 can be set according to the specific number of pipelines 100 in tube row, for example, if there are 6 pipelines 100 in tube row, then the pipe clamp body 1 has 6 arc clamping plates 11.

[0037] The specific structure of fastening assembly 4 can be set according to actual needs, as long as the opposite two pipe clamp bodies 1 can be connected and fixed on the pipeline 100;For example, Figure 1 As shown, fastening assembly 4 includes screw rod 41, first nut 42 and second nut 43, screw rod 41 passes through two pipe clamp bodies 1, first nut 42 and second nut 43 are respectively screwed on the two ends of screw rod 41 extending out of pipe clamp body 1, so as to firmly fix two pipe clamp bodies 1 on pipeline 100;First positioning plate 21 and second positioning plate 22 are respectively welded to the two ends of screw rod 41, so as to avoid pipe clamp body 1 from loosening from screw rod 41.

[0038] As shown in Figure 1As shown, a connecting end plate 12 is arranged between two adjacent arc-shaped clamping plates 11, and the fastening assembly 4 is arranged in the connecting end plate 12. Specifically, the connecting end plate 12 is integrally formed with the arc-shaped clamping plate 11, and a through hole for the screw rod 41 to pass through is formed in the connecting end plate 12. After the screw rod 41 passes through the through hole in the connecting end plate 12, the first nut 42 and the second nut 43 are screwed on the screw rod 41 and abut against the connecting end plate 12 of the two pipe clamp bodies 1 respectively. The connecting end plate 12 is in a flat plate structure and can be in flat contact with the end faces of the first nut 42 and the second nut 43, thereby ensuring the stability of the connection between the first nut 42, the second nut 43 and the screw rod 41.

[0039] When the pipe clamp body 1 has two arc-shaped clamping plates 11, the pipe clamp body 1 has one connecting end plate 12, and the connecting end plate 12 is provided with the fastening assembly 4. When the pipe clamp body 1 has three or more arc-shaped clamping plates 11, the pipe clamp body 1 has at least two connecting end plates 12. At this time, the staff can set the fastening assembly 4 on one or several connecting end plates 12 according to the actual situation on the spot, or set the fastening assembly 4 on each connecting end plate 12, as long as it can ensure that the pipe clamp body 1 can stably and effectively fix the entire pipe row. The specific number and position of the fastening assembly 4 are not limited herein.

[0040] In order to improve the clamping stability of the first positioning plate 21 and the second positioning plate 22 to the pipe clamp body 1, as shown in the drawings, Figure 1 As shown, the locking assembly 2 further comprises a first filling plate 23 and a second filling plate 24. The first filling plate 23 is clamped between the adjacent first positioning plate 21 and the pipe clamp body 1, and the second filling plate 24 is clamped between the adjacent second positioning plate 22 and the pipe clamp body 1. The first filling plate 23 and the second filling plate 24 are both provided with a groove 231, the bottom surface of the groove 231 abuts against the arc-shaped clamping plate 11, the side of the first filling plate 23 away from the pipeline 100 abuts against the first positioning plate 21, and the side of the second filling plate 24 away from the pipeline 100 abuts against the second positioning plate 22. Specifically, the first filling plate 23 and the second filling plate 24 are the same in structure, and the first filling plate 23 is taken as an example for description. The side of the first filling plate 23 facing the pipe clamp body 1 is provided with a groove 231 matching the arc-shaped clamping plate 11, and the side of the first filling plate 23 away from the pipe clamp body 1 is a flat plane. When the first filling plate 23 is clamped between the first positioning plate 21 and the pipe clamp body 1, the arc-shaped clamping plate 11 is clamped in the groove 231, the first positioning plate 21 and the second positioning plate 22 are both in a flat plate structure, and the side of the first filling plate 23 away from the pipe clamp body 1 abuts against the first positioning plate 21. Therefore, the first positioning plate 21 can increase the contact area with the pipe clamp body 1 through the first filling plate 23, thereby generating a stable clamping force.

[0041] In this embodiment, as shown in the drawings, Figure 1As shown, the convex part 232 is provided between two adjacent grooves 231, and the fastening assembly 4 is arranged in the convex part 232, so that the first filling plate 23 and the first positioning plate 21 are connected with the fastening assembly 4 as an integral structure, thereby enhancing the overall stability and reliability of the boiler heating surface tube row fixing device. Specifically, taking the first filling plate 23 and the first positioning plate 21 as an example, the convex part 232 of the first filling plate 23 is provided with a through hole for the screw rod 41 to pass through, and the first positioning plate 21 is also provided with a through hole at a corresponding position; first, the first filling plate 23 is abutted against the tube clamp body 1, and the screw rod 41 passes through the through hole of the convex part 232, then the joint between the screw rod 41 and the through hole of the convex part 232 is welded, so as to realize the connection between the first filling plate 23 and the fastening assembly 4, then the first positioning plate 21 is abutted against the first filling plate 23, and the screw rod 41 passes through the through hole of the first positioning plate 21, then the joint between the screw rod 41 and the through hole of the first positioning plate 21 is welded, so as to realize the connection between the first positioning plate 21 and the fastening assembly 4.

[0042] Further, as shown in Figure 2 The boiler heating surface tube row fixing device further comprises a support 3, the support 3 is arranged on the pipe 100, the tube clamp body 1 is abutted against the support 3 along the vertical direction, and the support 3 supports the tube clamp body 1 to prevent the tube clamp body 1 from sliding off the pipe 100 along the vertical direction. Specifically, the support 3 is welded on the pipe 100, and the support 3 can be a round steel pipe or a square steel pipe, as long as it can be welded on the pipe 100 and stably support the tube clamp body 1, and the specific structure of the support 3 is not limited herein.

[0043] Further, the lower end faces of the tube clamp body 1 and the locking assembly 2 along the vertical direction are flush, so that the tube clamp body 1 and the locking assembly 2 can be abutted against the support 3 along the vertical direction, and the support 3 supports the tube clamp body 1 and the locking assembly 2 at the same time, thereby further improving the integrity and stability of the boiler heating surface tube row fixing device. Specifically, taking the first filling plate 23, the first positioning plate 21 and the tube clamp body 1 on one side as an example, the heights of the first filling plate 23, the first positioning plate 21 and the tube clamp body 1 along the vertical direction are the same, and the upper end faces and the lower end faces of the three are flush, so that the support 3 can support the tube clamp body 1, the first filling plate 23 and the first positioning plate 21 at the same time, and prevent any one of the three from sliding down from the pipe 100 due to insecure connection. In this embodiment, the support 3 can be arranged on the pipe 100 one by one, or can be arranged on several pipes 100, but the pipes 100 at the two ends along the length direction of the tube clamp body 1 must be provided with the support 3, so as to effectively support the ends of the tube clamp body 1 and the locking assembly 2.

[0044] Further, as shown in Figure 1 and Figure 2As shown, the pipe clamp body 1 is provided with a butt joint end plate 13 at both ends in the length direction, and the butt joint end plates 13 of the two pipe clamp bodies 1 are connected through the fastening assembly 4, so as to ensure that the arc-shaped clamping plates 11 at both ends of the pipe clamp body 1 can exert sufficient clamping force on the pipe 100; specifically, the pipe clamp body 1 is provided with a butt joint end plate 13 at both ends in the length direction, the butt joint end plate 13 is integrally formed with the arc-shaped clamping plate 11, the butt joint end plate 13 is in a flat plate structure, and a through hole for the screw rod 41 to pass through is formed on the butt joint end plate 13, the ends of the screw rod 41 extending out of the through holes of the two butt joint end plates 13 are respectively screwed with a first nut 42 and a second nut 43, and the first nut 42 and the second nut 43 are respectively abutted against the butt joint end plates 13 of the two pipe clamp bodies 1, so as to connect the ends of the two pipe clamp bodies 1 and prevent the arc-shaped clamping plates 11 at both ends of the pipe clamp body 1 from being unable to clamp the pipe 100 due to insufficient clamping force.

[0045] In order to obtain the temperature change of the pipe clamp body 1 in real time, so as to timely find potential hidden dangers of the boiler heating surface pipe row fixing device in the use process, the boiler heating surface pipe row fixing device further comprises a monitoring unit, and the monitoring unit comprises a temperature sensor, the temperature sensor is arranged on the locking assembly 2, and the temperature sensor is used to detect the temperature of the pipe clamp body 1.

[0046] In order to obtain the stress change of the pipe clamp body 1 in real time, so as to further improve the safety of the pipe row in the running process, the monitoring unit further comprises a stress sensor, the stress sensor is arranged on the locking assembly 2, and the stress sensor is used to detect the stress of the pipe clamp body 1.

[0047] Further, the side of the arc-shaped clamping plate 11 facing the pipe 100 is provided with a flexible gasket, the flexible gasket can absorb vibration and impact, thereby improving the stability of the abutment between the pipe clamp body 1 and the pipe 100; at the same time, the flexible gasket can also effectively protect the pipe 100, preventing damage to the pipe 100 due to improper installation of the pipe clamp body 1 or stress change between the two; specifically, the flexible gasket is made of sponge or rubber.

[0048] The installation process of the boiler heating surface pipe row fixing device provided by the embodiment is as follows:

[0049] First, the support 3 is welded on the pipe 100, the two pipe clamp bodies 1 are relatively buckled on the two sides of the pipe row, the pipe clamp body 1 is abutted against the support 3 in the vertical direction, the screw rod 41 is passed through the through holes of the connecting end plates 12 of the two pipe clamp bodies 1, then the first nut 42 and the second nut 43 are screwed on the two ends of the screw rod 41 respectively, so that the first nut 42 and the second nut 43 are respectively abutted against the connecting end plates 12 of the two pipe clamp bodies 1; then the worker passes the screw rod 41 through the through holes of the butt joint end plates 13 of the two pipe clamp bodies 1, and screws the first nut 42 and the second nut 43 on the two ends of the screw rod 41 respectively, and makes the first nut 42 and the second nut 43 abut against the butt joint end plates 13 of the two pipe clamp bodies 1 respectively.

[0050] Afterwards, the first filling plate 23 and the second filling plate 24 are respectively abutted on the pipe clamp body 1 on both sides, the screw rod 41 is passed through the through hole on the convex part 232, the bottom surface of the groove 231 is abutted on the arc-shaped clamp plate 11, and then the joint between the screw rod 41 and the through hole on the convex part 232 is welded.

[0051] Subsequently, the first positioning plate 21 and the second positioning plate 22 are respectively abutted on the first filling plate 23 and the second filling plate 24, the screw rod 41 is passed through the through hole on the first positioning plate 21 and the second positioning plate 22, and the joint between the screw rod 41 and the through hole is welded.

[0052] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For the ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A boiler heating surface tube bank fixing device, characterized by, The utility model relates to a boiler heating surface tube row fixing device, including: Two pipe clamp bodies (1) are arranged opposite, the pipe clamp body (1) has at least two arc clamping plates (11) for abutting with pipeline (100), two pipe clamp bodies (1) are connected through fastening assembly (4); Locking assembly (2) includes first positioning plate (21) and second positioning plate (22), first positioning plate (21) and second positioning plate (22) are connected to both ends of fastening assembly (4) respectively, and first positioning plate (21) and second positioning plate (22) abut on the side of two pipe clamp bodies (1) away from pipeline (100) respectively.

2. The boiler heating surface tube bank fixing device according to claim 1, characterized by Connecting end plate (12) is arranged between adjacent two arc clamping plates (11), and fastening assembly (4) is arranged in connecting end plate (12).

3. The boiler heating surface tube bank securing device according to claim 2, characterized in that, First filling plate (23) and second filling plate (24) are further included in locking assembly (2), first filling plate (23) is clamped between adjacent first positioning plate (21) and pipe clamp body (1), and second filling plate (24) is clamped between adjacent second positioning plate (22) and pipe clamp body (1); First filling plate (23) and second filling plate (24) are provided with recess (231), the bottom surface of recess (231) is attached to arc clamping plate (11), the side of first filling plate (23) away from pipeline (100) is attached to first positioning plate (21), and the side of second filling plate (24) away from pipeline (100) is attached to second positioning plate (22).

4. The boiler heating surface tube bank fixing device according to claim 3, characterized by Convex part (232) is arranged between adjacent two recesses (231), and fastening assembly (4) is arranged in convex part (232).

5. The boiler heating surface tube bank securing device according to claim 1, characterized in that, The boiler heating surface tube row fixing device further includes a support member (3), and the pipe clamp body (1) is abutted against the support member (3) in the vertical direction.

6. The boiler heating surface tube bank securing device according to claim 5, wherein The pipe clamp body (1) and the locking assembly (2) are flush with each other in the vertical direction.

7. The boiler heating surface tube bank securing device according to claim 1, wherein The pipe clamp body (1) is provided with a butt joint end plate (13) at both ends in the length direction, and the butt joint end plates (13) of the two pipe clamp bodies (1) are connected by the fastening assembly (4).

8. The boiler heating surface tube bank securing device according to claim 1, wherein The boiler heating surface tube row fixing device further includes a monitoring unit, and the monitoring unit includes a temperature sensor arranged on the locking assembly (2) and configured to detect the temperature of the pipe clamp body (1).

9. The boiler heating surface tube bank securing device according to claim 8, characterized in that The monitoring unit further includes a stress sensor arranged on the locking assembly (2) and configured to detect the stress of the pipe clamp body (1).

10. A boiler heating surface tube bank fixing device according to any one of claims 1 to 9, characterized in that, The arc clamping plate (11) is provided with a flexible gasket on the side facing the pipeline (100).

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