Tube row through-wall sealing device and boiler

Abstract

The utility model relates to a tube bank through-wall sealing device and a boiler, the tube bank through-wall sealing device comprises a wall plate body and a sealing body, multiple rows of pipelines are arranged on the wall plate body in a penetrating mode, the sealing body is connected to the outer wall face of the wall plate body, and the sealing body comprises a bottom plate and a side plate connected to the bottom plate; the wallboard body comprises a bottom plate and side plates, and a plurality of ribs connected to the bottom plate and / or the side plates, a containing space is defined by the bottom plate and the side plates, the connecting ends of the multiple rows of pipelines and the wallboard body are located in the containing space, the containing space is filled with castable, and the ribs are arranged between every two adjacent rows of pipelines and used for stopping the castable. By means of the technical scheme, aiming at the air leakage problem of the pipeline wall penetrating position, the containing space can be filled with the castable to wrap the connecting ends of the multiple rows of pipelines and the wallboard body, and therefore the air leakage position of the pipeline wall penetrating position can be sealed and repaired.

Description

Technical Field

[0001] The present disclosure relates to the technical field of boilers, and in particular to a pipe bank wall penetration sealing device and a boiler. Background Art

[0002] The economizer, superheater and reheater of the power plant boiler are all equipped with sealing wall panels on the outside to reduce heat dissipation losses. At the same time, in order to improve the heat exchange efficiency, the pipe rows of the economizer, superheater and reheater are mostly set as denser serpentine pipes. During the installation process, the construction unit will uniformly weld multiple rows of pipes after they are installed through the wall in order to improve efficiency. Due to the blind spots at the welding positions, such as the opposite parts of two rows of pipes, the welding quality of these blind spots is poor, and the welding points are prone to air leakage, and vortices are easily formed at the leaking points, which will cause local impact on the pipes and cause leakage of the pipe rows. The furnace can only be stopped to replace the pipes, causing huge losses.

[0003] In the related art, when repairing the air leakage position of the pipe, the insulation cotton is generally soaked with glue to directly seal the air leakage position, or the insulation cotton is mixed with high-temperature ash powder and then added with high-temperature glue and stirred evenly to seal the air leakage position. Then, after running for a period of time, the insulation cotton at the sealed position will also weather, causing air leakage again at the position where the pipe passes through the wall. Utility Model Content

[0004] The purpose of the present disclosure is to provide a pipe row wall penetration sealing device and a boiler, so as to seal the air leakage at the pipe wall penetration point and prevent the connection point from leaking again, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present disclosure, a pipe row wall penetration sealing device is provided, comprising:

[0006] A wall panel body, wherein a plurality of rows of pipes are provided on the wall panel body; and

[0007] A sealing body is connected to the outer wall surface of the wall panel body, and the sealing body includes a bottom plate, a side plate connected to the bottom plate, and a plurality of ribs connected to the bottom plate and / or the side plate. The bottom plate and the side plate form a receiving space, and the connecting ends of the multiple rows of pipes and the wall panel body are located in the receiving space. The receiving space is filled with castables, and the ribs are placed between two adjacent rows of pipes to stop the castables.

[0008] Optionally, the sealing body has a first opening facing upward and a second opening facing away from the wallboard body, the first opening is used to fill the casting material, and the multiple rows of pipes pass through the second opening;

[0009] The sealing body further comprises a baffle plate connected to the side plate and disposed above the multiple rows of pipes, wherein the baffle plate is used to stop the casting material.

[0010] Optionally, the contact surface of the rib with the pipe is constructed as a curved surface that fits the outer wall surface of the pipe, and / or the contact surface of the baffle with the pipe is constructed as a curved surface that fits the outer wall surface of the pipe.

[0011] Optionally, a sealing structure is provided between the pipe and the rib, and / or between the pipe and the baffle, and / or between the pipe and the sealing body.

[0012] Optionally, one end of the rib is connected to the bottom plate, and one end of the rib away from the bottom plate is connected to the outer wall of the wall panel body and / or the baffle.

[0013] Optionally, the distance between the baffle and the outer wall surface of the wall panel body is smaller than the distance between the second opening and the outer wall surface of the wall panel body.

[0014] Optionally, a cover plate for closing the first opening is connected above the sealing body.

[0015] Optionally, the pipe jacket is provided with a protective member in contact with the baffle and / or the ribs.

[0016] Optionally, the bottom plate and / or the side plates are made of stainless steel and welded to the outer wall surface of the wall panel body.

[0017] According to a second aspect of the present disclosure, a boiler is provided, comprising the above-mentioned tube row wall penetration sealing device.

[0018] Through the above technical scheme, in order to solve the problem of air leakage at the position where the pipe passes through the wall, the casting material can be filled into the accommodating space to cover the connecting ends of multiple rows of pipes and the wall panel body, so that the air leakage at the position where the pipe passes through the wall can be sealed and repaired. In this process, the bottom plate is used to receive the casting material. At the same time, through the stopping effect of the side plates and ribs, the escape of the casting material from the accommodating space is reduced, so that the casting material can flow and solidify better in the accommodating space to seal the air leakage. In addition, the bottom plate, side plates and ribs can also protect the casting material, so as to reduce the possibility of air leakage at the sealed repaired position due to damage of the casting material. The sealing effect is better and the repair effect is more sustainable. In addition, compared with the method of bonding thermal insulation cotton, the above-mentioned method of sealing and repairing the air leakage with the casting material can reduce the operation time and improve the efficiency of the sealing and repair work.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 It is a partial structural schematic diagram of a pipe row wall penetration sealing device provided in an exemplary embodiment of the present disclosure.

[0022] Description of Reference Numerals

[0023] 1. Wall panel body; 2. Pipe; 3. Sealing body; 31. Bottom plate; 32. Side plate; 33. Ribs; 34. Accommodating space; 35. Baffle; 4. Protective parts. DETAILED DESCRIPTION

[0024] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0025] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component; "far" and "near" refer to the distance and nearness of the corresponding component in space relative to another component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0026] The pipe bank wall penetration sealing device and the boiler in the exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0027] According to the first aspect of the present disclosure, referring to Figure 1 The present invention provides a pipe row wall penetration sealing device, including a wall panel body 1 and a sealing body 3. A plurality of rows of pipes 2 are penetrated on the wall panel body 1. The sealing body 3 is connected to the outer wall surface of the wall panel body 1. The sealing body 3 includes a bottom plate 31, a side plate 32 connected to the bottom plate 31, and a plurality of ribs 33 connected to the bottom plate 31 and / or the side plate 32. The bottom plate 31 and the side plate 32 form a receiving space 34. The connection ends of the plurality of rows of pipes 2 and the wall panel body 1 are located in the receiving space 34. The receiving space 34 is filled with castables. The ribs 33 are placed between two adjacent rows of pipes 2 to stop the castables.

[0028] Through the above technical scheme, in order to solve the problem of air leakage at the position where the pipe 2 passes through the wall, the accommodating space 34 can be filled with castable to cover the connecting ends of multiple rows of pipes 2 and the wall panel body 1, so that the air leakage at the position where the pipe 2 passes through the wall can be sealed and repaired. In this process, the bottom plate 31 is used to receive the castable. At the same time, through the stopping effect of the side plate 32 and the ribs 33, the escape of the castable from the accommodating space 34 is reduced, so that the castable can flow and solidify better in the accommodating space 34 to seal the air leakage. In addition, the bottom plate 31, the side plate 32 and the ribs 33 can also protect the castable, so as to reduce the possibility of air leakage at the sealed repaired position due to damage of the castable. The sealing effect is better and the repair effect is more sustainable. In addition, compared with the method of bonding thermal insulation cotton, the above-mentioned method of sealing and repairing the air leakage with the castable can reduce the operation time and improve the efficiency of the sealing repair work.

[0029] It should be noted that the above-mentioned castable can be made of, for example, wear-resistant plastic, whose components mainly include aggregates such as high-alumina bauxite clinker, corundum, mullite and silicon carbide, as well as binders and speed increasers such as phosphate solution, ultrafine alumina powder, corundum powder, and high-alumina powder. It has excellent wear resistance, super strong adhesion and high operating temperature, and is suitable for construction in thin parts. The wear-resistant layer after construction has high strength and wear resistance, and can meet the performance requirements of wear-resistant refractory materials, so as to achieve the function of filling the receiving space 34 with fluidity by using the castable, and solidifying the castable at the air leakage connection between the pipe 2 and the wall panel body 1 after cooling to perform sealing and repairing. In the process of filling the castable, the vibrator can be used to vibrate so that the castable flows evenly in the receiving space 34 and solidifies at the air leakage where the pipe 2 passes through the wall. In an exemplary application scenario, for example, the pipe row through-the-wall sealing device can be applied to an economizer, where multiple rows of serpentine pipes 2 of the economizer are penetrated through a sealing wallboard, and the sealing body 3 can be arranged on the outer wall surface of the sealing wallboard of the economizer, so as to perform sealing repair on the air leakage at the connection end of the outer wall of the sealing wallboard facing the pipe 2 penetrating the sealing wallboard. It is understandable that in some other application scenarios, for example, the pipe row through-the-wall sealing device can also be applied to a superheater and a reheater, etc., and the present disclosure is not limited thereto.

[0030] In addition, since the pipes 2 are arranged more densely and the interval between two adjacent rows of pipes 2 is small, the ribs 33 can be provided to stop the castable material to reduce the possibility of the castable material flowing out of the gap between two adjacent rows of pipes 2. In order to facilitate the installation of the sealing body 3, the bottom plate 31, the side plate 32 and the ribs 33 can be installed in sequence. It can be understood that the length of the bottom plate 31 can be arbitrarily set according to the number of rows of pipes 2 that need to be sealed and repaired. For example, there are four rows of pipes 2, and the length of the bottom plate 31 can be set larger to facilitate the connection with the wall panel body 1 and to form a larger accommodating space 34, so that the castable material can be filled around the connecting end of the pipe 2 passing through the wall panel body 1. At the same time, the bottom plate 31 and the lower pipe 2 passing through the wall panel body 1 There is a certain gap between the lower parts of the connecting ends so that the castable material can completely cover the connecting ends of the pipes 2 passing through the wall panel body 1, especially the lower part of the lower pipe 2, and then the side panels 32 are installed and connected to the bottom plate 31 to stop the castable material along the arrangement direction of the multiple rows of pipes 2. Finally, the ribs 33 are connected between the two adjacent rows of pipes 2 to stop the castable material in the length extension direction of the pipes 2. It can be understood that due to the limited fluidity of the castable material, the ribs 33 may not be arranged between the side panels 32 and the pipes 2 adjacent to the side panels 32, or the side panels 32 may be arranged at an angle in the length direction of the pipes 2 so that the end of the side panels 32 away from the wall panel body 1 can contact the pipe 2, and the present disclosure does not make any specific limitation on this.

[0031] In some other possible embodiments not shown in the accompanying drawings, the pipe row wall penetration sealing device can also be used for a single row of pipes 2, so that only the bottom plate 31 and the side plate 32 need to be installed. Similarly, a receiving space 34 can be formed through the bottom plate 31 and the side plate 32 for filling the castable, so as to be able to seal and repair the air leakage at the connection end where the pipe 2 passes through the wall panel body 1, and the present disclosure will not elaborate on this.

[0032] In some embodiments, reference Figure 1 The sealing body 3 has a first opening facing upward and a second opening facing away from the wall panel body 1, wherein the first opening can be used to fill the castable, and the multiple rows of pipes 2 are penetrated through the second opening, and the ribs 33 are used to stop the castable from escaping from the accommodating space 34 through the second opening. In addition, the sealing body 3 also includes a baffle 35 connected to the side plate 32 and placed above the multiple rows of pipes 2, so as to stop the castable from escaping from the accommodating space 34 above the pipes 2. It can be understood that in order to ensure the sealing effect, when filling the accommodating space 34 with castable, the upper plane of the castable must be higher than the upper end of the pipe 2. In this way, the castable can completely cover the connecting end of the pipe 2 where the wall panel body 1 is penetrated, especially the upper position of the upper pipe 2, so as to be able to seal and repair the air leakage.

[0033] In some embodiments, reference Figure 1 The contact surface of the rib 33 with the pipe 2 can be constructed as an arc surface that fits the outer wall surface of the pipe 2, so that the gap between the rib 33 and the pipe 2 can be reduced, and the stopping effect during the casting filling process can be improved. Similarly, the contact surface of the baffle 35 with the pipe 2 can be constructed as an arc surface that fits the outer wall surface of the pipe 2, so that the gap between the baffle 35 and the pipe 2 can be reduced, and the stopping effect during the casting filling process can be improved. When installing the rib 33, the rib 33 can be rotated sideways to facilitate insertion into the gap between two adjacent rows of pipes 2, and then the rib 33 is reversed so that the arc surface of the rib 33 fits the outer wall surface of the pipe 2. It can be understood that the above-mentioned ribs 33 and baffles 35 are configured as curved surfaces for exemplary purposes only. The shapes of the ribs 33 and the baffles 35 can be set according to the shape of the outer wall of the pipe 2. For example, in some other possible embodiments not shown in the accompanying drawings, the pipe 2 is a square tube. In this case, the outer wall of the pipe 2 is a linear plane, and the ribs 33 and the baffles 35 can be configured as linear plates that fit the outer wall of the pipe 2. The present disclosure does not make any specific limitations on this.

[0034] In addition, a sealing structure can be set between the pipe 2 and the rib 33, and / or between the pipe 2 and the baffle 35, and / or between the pipe 2 and the sealing body 3 according to usage requirements, so as to improve the sealing of the castable and subsequent protection effect, wherein the sealing structure can be made of high-temperature resistant materials such as rock wool, glass wool or aerogel, and connected to the pipe 2 and / or the rib 33 and / or the sealing body 3 by, for example, bonding, so as to be able to perform secondary sealing on the gaps between the pipe 2 and the rib 33, between the pipe 2 and the baffle 35, and between the pipe 2 and the sealing body 3, thereby reducing the possibility of the castable escaping from the accommodating space 34, and at the same time, the accommodating space 34 can be closed to a certain extent, reducing the influence of the external environment on the solidified castable, so as to protect the castable, and further ensure the sealing and repairing effect of the castable, but the present disclosure is not limited to this.

[0035] In some embodiments, reference Figure 1It can be understood that, in order to ensure the overall structural strength of the castable, there is a certain filling space between the baffle 35 and the outer wall of the wall panel body 1, and the distance between the baffle 35 and the outer wall of the wall panel body 1 is smaller than the distance between the second opening and the outer wall of the wall panel body 1. In this way, while the baffle 35 can cooperate with the ribs 33 to stop the castable from escaping from the second opening, the redundant volume of the accommodating space 34 can be reduced, thereby reducing the redundant amount of castable, that is, the amount of castable used for sealing and repairing the pipe 2 passing through the wall panel body 1. The amount of air leakage, thereby reducing the material consumption. In addition, the installation position of the baffle 35 is also affected by the number of pipes 2 to be repaired (that is, the volume of the accommodating space 34, the amount of castable), and the limitation of the working space during installation. Therefore, the installation position of the baffle 35 can be set according to the on-site usage, and this is not specifically limited by the present disclosure. In some other possible embodiments not shown in the accompanying drawings, the bottom plate 31 can be tilted in the length direction of the pipe 2 so that one end of the wall panel body 1 of the bottom plate 31 can contact the pipe 2. In this way, without affecting the sealing and repairing effect of the castable on the air leakage position of the connection end where the pipe 2 passes through the wall panel body 1, the redundant volume of the accommodating space 34 can be reduced, thereby reducing the excess amount of castable. The present disclosure is not limited to this.

[0036] In some embodiments, reference Figure 1 , one end of the rib 33 can be connected to the end of the bottom plate 31 away from the wall panel body 1, so that it is convenient for the staff to install and fix the rib 33. In addition, in some other possible embodiments not shown in the drawings, one end of the rib 33 can also be connected to the middle position of the bottom plate 31, wherein the middle position refers to any position between the end of the bottom plate 31 away from the wall panel body 1 and the end connected to the wall panel body 1. In this way, the redundant volume of the accommodating space 34 can be reduced, thereby reducing the redundant amount of castables. In addition, the end of the rib 33 away from the bottom plate 31 can be connected to the outer wall of the wall panel body 1, so that the stability of the rib 33 when connected can be improved, so as to improve the stopping effect on the castable. In some other possible embodiments not shown in the drawings, the end of the rib 33 away from the bottom plate 31 can be connected to the baffle 35, thereby reducing the length of the rib 33, further improving the stability of the connection of the rib 33, and improving the stopping effect on the castable.

[0037] Further, in some embodiments, referring to Figure 1A protective member 4 in contact with the baffle 35 and / or the ribs 33 may be provided outside the pipe 2. In this way, the pipe 2 can be protected to reduce the possibility of damage or even leakage of the pipe 2. The protective member 4 may be a high-temperature resistant insulating sleeve connected to the outer wall of the pipe 2 by bonding or the like. On this basis, the protective member 4 may also be connected to the baffle 35 and the ribs 33, so that the stability of the connection to the pipe 2 can be improved through the baffle 35 and the ribs 33, thereby ensuring the protection of the pipe 2. At the same time, the baffle 35 and the ribs 33 can improve the stability of the connection through the protective member 4 to ensure the stopping effect on the castable. The present disclosure is not limited to this.

[0038] In some embodiments, a cover plate (not shown in the figure) for closing the first opening is connected above the sealing body 3, so that the staff can first fill the castable into the accommodating space 34, and then after the castable is filled to cover the air leakage at the connection end where the pipe 2 passes through the wall panel body 1, the cover plate is connected to the side panel 32 to close the accommodating space 34, so as to protect the filled castable, reduce the possibility of the castable being weathered and damaged by the external environment, and then cause the connection end where the pipe 2 passes through the wall panel body 1 to leak again.

[0039] In order to better ensure that the sealing body 3 as a whole has a high heat resistance, in some embodiments, the bottom plate 31 and / or the side plate 32 are made of stainless steel and welded to the outer wall surface of the wall panel body 1, so as to ensure that the sealing body 3 as a whole has a high heat resistance, so as to ensure that the sealing body 3 works stably for a long time. Of course, in some other embodiments, the bottom plate 31 and / or the side plate 32 can also be a heat-resistant plate material such as an aluminum plate or an alloy steel plate. In addition, the bottom plate 31 and / or the side plate 32 can also be made of a high-temperature resistant rubber material, such as silicone rubber, etc., and bonded to the outer wall surface of the wall panel body 1 by using a high-temperature resistant inorganic glue. The present disclosure does not make specific limitations on this. In addition, it can be understood that the cover plate mentioned above can also be made of stainless steel, which facilitates the welding connection of the cover plate. Of course, the cover plate can also be connected to the side plate 32 by a snap-fit ​​method, and the present disclosure is not limited to this.

[0040] According to a second aspect of the present disclosure, a boiler is provided, comprising the above-mentioned tube bank through-wall sealing device, the boiler has all the beneficial effects of the above-mentioned tube bank through-wall sealing device, which will not be described in detail in the present disclosure. The tube bank through-wall sealing device can be used in the economizer, superheater and regenerator of the boiler, and the present disclosure does not specifically limit this.

[0041] The present disclosure exemplarily describes the installation process of connecting the pipe row wall-penetrating sealing device to the wall panel body 1 and the subsequent sealing and repairing process of the air leakage position.

[0042] First, the length of the bottom plate 31 is determined according to the number of pipes 2 with air leakage positions, and then the bottom plate 31 is welded to the outer wall surface of the wall panel body 1. At this time, there is a certain gap between the bottom plate 31 and the lower part of the connection end of the lower layer pipe 2 passing through the wall panel body 1, so that the castable can completely cover the connection end of the pipe 2 passing through the wall panel body 1. Then the side plate 32 is installed and welded to the bottom plate 31. The side plate 32 can be tilted in the length direction of the pipe 2 so that the end of the side plate 32 away from the wall panel body 1 can contact the pipe 2. Then, the rib 33 is connected between two adjacent rows of pipes 2. One end of the rib 33 is welded to the end of the bottom plate 31 away from the wall panel body 1, and the end of the rib 33 away from the bottom plate 31 can be welded to the outer wall of the wall panel body 1. Finally, the baffle 35 is welded between the two side plates 32 and is located above the pipe 2.

[0043] The accommodating space 34 is filled with castable material and vibrated by a vibrator so that the castable material flows evenly in the accommodating space 34 and condenses at the air leakage where the pipe 2 passes through the wall. Finally, the cover plate is connected to the side plate 32 to close the accommodating space 34.

[0044] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0046] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A pipe row wall sealing device, It is characterized in that include: A wall panel body, wherein a plurality of rows of pipes are provided on the wall panel body; and A sealing body is connected to the outer wall surface of the wall panel body, and the sealing body includes a bottom plate, a side plate connected to the bottom plate, and a plurality of ribs connected to the bottom plate and / or the side plate. The bottom plate and the side plate form a receiving space, and the connecting ends of the multiple rows of pipes and the wall panel body are located in the receiving space. The receiving space is filled with castables, and the ribs are placed between two adjacent rows of pipes to stop the castables.

2. The pipe row wall sealing device according to claim 1, It is characterized in that The sealing body has a first opening facing upward and a second opening facing away from the wallboard body, the first opening is used to fill the casting material, and the multiple rows of pipes pass through the second opening; The sealing body further comprises a baffle plate connected to the side plate and disposed above the multiple rows of pipes, wherein the baffle plate is used to stop the casting material.

3. The pipe row wall sealing device according to claim 2, It is characterized in that The contact surface of the rib with the pipe is configured as a curved surface that fits the outer wall surface of the pipe, and / or the contact surface of the baffle with the pipe is configured as a curved surface that fits the outer wall surface of the pipe.

4. The pipe row wall sealing device according to claim 2 or 3, It is characterized in that A sealing structure is provided between the pipe and the rib, and / or between the pipe and the baffle, and / or between the pipe and the sealing body.

5. The pipe row wall sealing device according to claim 2, It is characterized in that One end of the rib is connected to the bottom plate, and one end of the rib away from the bottom plate is connected to the outer wall of the wall panel body and / or the baffle.

6. The pipe row wall sealing device according to claim 2, It is characterized in that The distance between the baffle and the outer wall surface of the wall panel body is smaller than the distance between the second opening and the outer wall surface of the wall panel body.

7. The pipe row wall penetration sealing device according to claim 2, It is characterized in that A cover plate for closing the first opening is connected above the sealing body.

8. The pipe row wall penetration sealing device according to claim 2, It is characterized in that The pipe jacket is provided with a protective member in contact with the baffle and / or the rib.

9. The pipe row wall penetration sealing device according to claim 1, It is characterized in that The bottom plate and / or the side plate are made of stainless steel and are welded to the outer wall surface of the wall panel body.

10. A boiler, It is characterized in that The invention comprises the pipe row wall penetration sealing device as described in any one of claims 1 to 9.

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