Boiler high-temperature superheater treatment equipment

Abstract

The utility model relates to the technical field of superheaters, in particular to boiler high-temperature superheater treatment equipment which comprises a steam box, a sealing top cover is fixedly installed at the top of the steam box, a sealing bottom cover is fixedly installed at the bottom of the steam box, and an air inlet cavity, an exhaust cavity and a separation cavity located between the air inlet cavity and the exhaust cavity are formed in the steam box. A plurality of overheating pipes are welded to one side of the steam box. According to the boiler high-temperature superheater treatment equipment, the automatic adjusting mechanism and the supporting mechanism are arranged to conduct auxiliary supporting on the superheat pipe, the phenomenon that the far end, away from the steam box, of the superheat pipe falls due to the influence of the superheat pipe and steam impact force is avoided, therefore, the welding position of the superheat pipe and the steam box is prevented from being broken, and the service life of a superheater is prolonged; and meanwhile, a guide rod in the automatic adjusting mechanism can stretch out and draw back according to the steam pressure in the steam box, the larger the steam pressure is, the closer the supporting mechanism pushed by the guide rod to the far end of the superheat pipe is, and the better supporting effect on the superheat pipe is.

Description

Technical Field

[0001] The utility model relates to the technical field of superheaters, in particular to a boiler high-temperature superheater processing device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler is in the form of chemical energy in the fuel, electrical energy, thermal energy of high-temperature flue gas, etc. After conversion by the boiler, it outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. It is widely used in thermal power plants, ships, locomotives and industrial and mining enterprises. The superheater is a component in the boiler that further heats the steam from the saturation temperature to the superheat temperature. It is also called a steam superheater. The superheater can be divided into convection type, radiation type and semi-radiation type according to the heat transfer method; according to the structural characteristics, it can be divided into serpentine tube type, screen type, wall type and wall-wrapped type. They are all composed of several parallel superheated tubes and inlet and outlet steam boxes.

[0003] At present, the superheater tubes in common superheaters are connected to the steam box by welding. In order to improve the heating effect of the superheater tube on the internal steam, the length of the superheater tube is often longer. When the superheater tube is laid horizontally relative to the steam box, the weight of the superheater tube plus the impact of the steam pressure, and the end of the superheater tube away from the steam box is in a suspended state, the pressure applied to the welding position of the superheater tube and the steam box is relatively large. The greater the steam pressure, the greater the pressure on the superheater tube welding. The long-term impact plus the influence of the weight of the superheater tube itself can easily cause the superheater tube and the steam box welding to rupture, which poses a certain safety hazard. In addition, the common steam box and the superheater tube are directly connected. The steam flows along the internal bracket of the steam box to the superheater tube. When the steam flow rate is too fast, it will also produce a certain impact force on the superheater tube, further increasing the probability of rupture at the welding point between the superheater tube and the steam box. For this reason, we propose a boiler high-temperature superheater processing equipment to solve the above problems. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a boiler high-temperature superheater treatment device, which can reduce the impact force of steam on the superheater tube and realize stable support for the superheater tube.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a boiler high-temperature superheater processing equipment, including a steam box, a sealed top cover is fixedly installed on the top of the steam box, and a sealed bottom cover is fixedly installed on the bottom, the interior of the steam box is provided with an air intake chamber, an exhaust chamber and a partition chamber located between the air intake chamber and the exhaust chamber, a plurality of superheating tubes are welded on one side of the steam box, and one end of the superheating tube is connected to the air intake chamber and the other end is connected to the exhaust chamber, a plurality of automatic adjustment mechanisms are provided on the side of the steam box close to the superheating tube, and a supporting mechanism is provided at the end of the automatic adjustment mechanism, the supporting mechanism is clamped on the outside of the superheating tube, and a plurality of dispersion mechanisms are provided inside the air intake chamber.

[0006] As a preferred embodiment of a boiler high-temperature superheater processing equipment of the utility model, the sealed top cover and the sealed bottom cover are fixedly connected to the steam box by screws, and a sealing gasket is arranged between the sealed top cover, the sealed bottom cover and the steam box, an exhaust port is welded on the sealed top cover, and an air inlet is welded on the sealed bottom cover. By installing a sealing gasket at the connection position of the sealed top cover, the sealed bottom cover and the steam box, the sealing performance of the connection between the sealed top cover, the sealed bottom cover and the steam box is improved to prevent the steam pressure from being too high and leaking.

[0007] As a preferred embodiment of a boiler high-temperature superheater processing device of the utility model, the superheater tubes are arranged in parallel on the sides of the steam box, and the superheater tubes are generally of a serpentine structure. The superheater tubes are generally of a serpentine structure, which increases the length of time that the steam flows inside the superheater tubes, increases the heating time of the steam, and thus improves the heating effect of the steam inside the superheater tubes.

[0008] As a preferred embodiment of a boiler high-temperature superheater processing equipment of the utility model, the automatic adjustment mechanism includes a connecting outer tube, a guide rod, a sealing sleeve, a return spring, and a threaded end. The connecting outer tube is welded to the steam box, and the connecting outer tube is connected to the air intake cavity. The guide rod is movably sleeved inside the connecting outer tube. The guide rod in the automatic adjustment mechanism can be extended and retracted according to the steam pressure inside the steam box. The greater the steam pressure, the closer the guide rod pushes the supporting mechanism to the far end of the superheater pipe, and the better the supporting effect on the superheater pipe.

[0009] As a preferred boiler high-temperature superheater processing equipment of the utility model, a sealing sleeve cooperating with the guide rod is nested on the inner side of the end of the connecting outer tube, the end of the connecting outer tube is threadedly connected with a threaded end, and the external movable sleeve of the guide rod is provided with a reset spring, and the reset spring can apply elastic force to the guide rod. When the reset spring applies elastic force to the guide rod, when the steam pressure in the air intake chamber decreases, it is convenient to reset the guide rod, thereby adjusting the position of the support mechanism.

[0010] As a preferred boiler high-temperature superheater processing equipment of the utility model, the supporting mechanism includes a supporting frame, a fixed supporting plate, a movable supporting plate, and a clamping groove. The supporting frame is fixedly connected to the end of the guide rod, and a plurality of fixed supporting plates and movable supporting plates cooperating with the superheated pipe are arranged in the supporting frame. The superheated pipe is auxiliary supported by the automatic adjustment mechanism and the supporting mechanism to prevent the end of the superheated pipe away from the steam box from falling due to the impact of itself and steam, and to prevent the welding position between the superheated pipe and the steam box from breaking.

[0011] As a preferred boiler high-temperature superheater processing equipment of the utility model, the fixed support plate is welded to the inside of the support frame, and the movable support plate is installed on the inside of the support frame by screws. The fixed support plate and the movable support plate are both provided with clamping grooves that cooperate with the superheat pipe. The fixed support plate and the movable support plate are provided with clamping grooves, and the superheat pipe can be clamped to the outside of the clamping groove to ensure that the fixed support plate, the movable support plate and the superheat pipe can be stably matched.

[0012] As a preferred boiler high-temperature superheater processing equipment of the utility model, the dispersion mechanism includes a dispersion plate, a guide hole, a positioning rod, and a compression spring. The positioning rod is threadedly connected to the inside of the air intake chamber, and the dispersion plate is movably sleeved on the outside of the positioning rod. The dispersion plate is provided with evenly distributed guide holes, and the outer movably sleeve of the positioning rod is provided with a compression spring. The positioning rods between two adjacent groups of dispersion mechanisms are threadedly connected. When the steam enters the inside of the air intake chamber, it first impacts the dispersion plate and continues to flow through the guide hole. The dispersion plates in the multiple groups of dispersion mechanisms cooperate with each other to slow down the flow rate of the steam and reduce the impact force exerted by the steam on the superheater pipe. Adjacent dispersion mechanisms and the dispersion mechanisms and the steam boxes are threadedly connected by positioning rods, which are easy to disassemble and assemble.

[0013] The utility model has the following beneficial effects:

[0014] The high-temperature superheater processing equipment of the boiler designed by the utility model provides auxiliary support for the superheater tube by arranging an automatic adjustment mechanism and a supporting mechanism, thereby preventing the far end of the superheater tube away from the steam box from falling due to the impact of the superheater tube itself and the steam, thereby preventing the welding position between the superheater tube and the steam box from breaking, and improving the service life of the superheater. At the same time, the guide rod in the automatic adjustment mechanism can be extended and retracted according to the steam pressure inside the steam box. The greater the steam pressure, the closer the guide rod pushes the supporting mechanism to the far end of the superheater tube, and the better the supporting effect on the superheater tube.

[0015] The utility model designs a boiler high-temperature superheater processing device, by arranging a plurality of dispersion mechanisms in the air inlet cavity, when the steam enters the air inlet cavity, it first impacts on the dispersion plate, and continues to flow through the guide hole, and the plurality of dispersion plates cooperate with each other to slow down the flow rate of the steam, thereby reducing the impact force exerted by the steam on the superheat pipe, and further preventing the superheat pipe and the steam box from breaking at the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0018] Figure 2 It is a structural schematic diagram of the two ends of the steam box of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the steam box of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the dispersion mechanism of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the automatic adjustment mechanism of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the support mechanism of the utility model.

[0023] Legend:

[0024] 1. Steam box; 2. Sealed top cover; 3. Sealed bottom cover; 4. Exhaust port; 5. Air inlet; 6. Sealing gasket; 7. Air inlet chamber; 8. Exhaust chamber; 9. Partition chamber; 10. Dispersion mechanism; 101. Dispersion plate; 102. Guide hole; 103. Positioning rod; 104. Compression spring; 11. Superheat pipe; 12. Automatic adjustment mechanism; 121. Connecting outer pipe; 122. Guide rod; 123. Sealing sleeve; 124. Reset spring; 125. Threaded end; 13. Support mechanism; 131. Support frame; 132. Fixed support plate; 133. Movable support plate; 134. Snap-in groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] like Figure 1-Figure 6 As shown;

[0027] A boiler high temperature superheater treatment device comprises a steam box 1;

[0028] In this embodiment: the superheater tubes in the common superheaters are connected to the steam box by welding. In order to improve the heating effect of the superheater tube on the internal steam, the length of the superheater tube is often longer. When the superheater tube is laid horizontally relative to the steam box, the weight of the superheater tube plus the impact of the steam pressure, and the end of the superheater tube away from the steam box is in a suspended state, the pressure applied to the welding position of the superheater tube and the steam box is relatively large. The greater the steam pressure, the greater the pressure on the superheater tube welding. The long-term impact plus the influence of the weight of the superheater tube itself can easily cause the welding position between the superheater tube and the steam box to rupture, which poses a certain safety hazard. In addition, the common steam box and the superheater tube are directly connected. The steam flows along the internal bracket of the steam box to the superheater tube. When the steam flow rate is too fast, it will also produce a certain impact force on the superheater tube, further increasing the probability of rupture at the welding position between the superheater tube and the steam box. In view of this, in order to solve this technical problem, an automatic adjustment mechanism 12 and a support mechanism 13 are added to the application document.

[0029] According to the above content, in order to reduce the impact force of steam on the superheated tube 11 and realize stable support for the superheated tube 11, the steam box 1 also includes a sealed top cover 2 fixedly installed on the top and a sealed bottom cover 3 fixedly installed on the bottom, the steam box 1 is provided with an air intake chamber 7, an exhaust chamber 8 and a partition chamber 9 located between the air intake chamber 7 and the exhaust chamber 8, a plurality of superheated tubes 11 are welded on one side of the steam box 1, and one end of the superheated tube 11 is connected to the air intake chamber 7 and the other end is connected to the exhaust chamber 8, a plurality of automatic adjustment mechanisms 12 are provided on the side of the steam box 1 close to the superheated tube 11, and a support mechanism 13 is provided at the end of the automatic adjustment mechanism 12, the support mechanism 13 is clamped on the outside of the superheated tube 11, and a plurality of dispersion mechanisms 10 are provided inside the air intake chamber 7.

[0030] In this embodiment: the superheated tube 11 is auxiliary supported by the automatic adjustment mechanism 12 and the support mechanism 13 to prevent the far end of the superheated tube 11 away from the steam box 1 from falling due to the impact of itself and the steam, and to prevent the welding position between the superheated tube 11 and the steam box 1 from breaking. The guide rod 122 in the automatic adjustment mechanism 12 can be extended and retracted according to the steam pressure inside the steam box 1. The greater the steam pressure, the closer the guide rod 122 pushes the support mechanism 13 to the far end of the superheated tube 11, and the better the support effect on the superheated tube 11.

[0031] When the steam enters the air inlet cavity 7, it first impacts the dispersion plate 101 and continues to flow through the guide holes 102. The plurality of dispersion plates 101 cooperate with each other to slow down the flow rate of the steam, thereby reducing the impact force exerted by the steam on the superheater tube 11.

[0032] In an optional embodiment: the sealed top cover 2 and the sealed bottom cover 3 are fixedly connected to the steam box 1 by screws, a sealing gasket 6 is arranged between the sealed top cover 2, the sealed bottom cover 3 and the steam box 1, an exhaust port 4 is welded on the sealed top cover 2, and an air inlet 5 is welded on the sealed bottom cover 3.

[0033] In this embodiment: by installing a sealing gasket 6 at the connection position of the sealing top cover 2, the sealing bottom cover 3 and the steam box 1, the sealing performance of the connection between the sealing top cover 2, the sealing bottom cover 3 and the steam box 1 is improved to prevent the steam pressure from leaking due to excessive pressure. At the same time, the sealing top cover 2 and the sealing bottom cover 3 are installed with screws to ensure that the installation is firm and easy to disassemble and assemble.

[0034] In an optional embodiment: the superheating tubes 11 are arranged in parallel on the side of the steam box 1, and the superheating tubes 11 are of a serpentine structure as a whole.

[0035] In this embodiment, the superheater tube 11 is a serpentine structure as a whole, which increases the time for the steam to flow inside the superheater tube 11, thereby improving the heating effect of the steam inside the superheater tube 11.

[0036] In an optional embodiment: the automatic adjustment mechanism 12 includes a connecting outer tube 121, a guide rod 122, a sealing sleeve 123, a return spring 124, and a threaded end 125. The connecting outer tube 121 is welded to the steam box 1, and the connecting outer tube 121 is connected to the air intake chamber 7, and the guide rod 122 is movably sleeved inside the connecting outer tube 121.

[0037] In this embodiment: the guide rod 122 in the automatic adjustment mechanism 12 can be extended and retracted according to the steam pressure inside the steam box 1. The greater the steam pressure, the closer the guide rod 122 pushes the supporting mechanism 13 to the far end of the superheater tube 11, and the better the supporting effect on the superheater tube 11.

[0038] In an optional embodiment: a sealing sleeve 123 that cooperates with the guide rod 122 is nested on the inner side of the end of the outer tube 121, a threaded end 125 is threadedly connected to the end of the outer tube 121, and a return spring 124 is provided on the external movable sleeve of the guide rod 122, and the return spring 124 can apply elastic force to the guide rod 122.

[0039] In this embodiment: by providing a sealing sleeve 123, the sealing performance of the connection position between the guide rod 122 and the connecting outer tube 121 can be improved to prevent steam leakage. By providing a threaded end 125, the position of the sealing sleeve 123 and the return spring 124 can be further restricted to prevent both from falling off. The return spring 124 applies elastic force to the guide rod 122. When the steam pressure in the air inlet chamber 7 decreases, the guide rod 122 is easily reset, thereby adjusting the position of the support mechanism 13.

[0040] In an optional embodiment: the support mechanism 13 includes a support frame 131, a fixed support plate 132, a movable support plate 133, and a snap-in groove 134. The support frame 131 is fixedly connected to the end of the guide rod 122, and the support frame 131 is provided with a plurality of fixed support plates 132 and movable support plates 133 that cooperate with the superheating pipe 11.

[0041] In this embodiment: the superheater tube 11 is auxiliary supported by the automatic adjustment mechanism 12 and the support mechanism 13 to prevent the end of the superheater tube 11 away from the steam box 1 from falling due to the impact of itself and steam, and to prevent the welding position between the superheater tube 11 and the steam box 1 from breaking.

[0042] In an optional embodiment: the fixed support plate 132 is welded to the inside of the support frame 131, and the movable support plate 133 is installed to the inside of the support frame 131 by screws. Both the fixed support plate 132 and the movable support plate 133 are provided with a snap-in groove 134 that cooperates with the superheating pipe 11.

[0043] In this embodiment: since the superheated pipe 11 is a serpentine structure, the end portion of the superheated pipe 11 is a closed structure, the support frame 131 and the fixed support plate 132 can be inserted along one end of the superheated pipe 11, and then the movable support plate 133 is assembled and locked by screws. By opening a snap-fit ​​groove 134 on the fixed support plate 132 and the movable support plate 133, the superheated pipe 11 can be snap-fitted to the outside of the snap-fit ​​groove 134, so that the superheated pipe 11 can be stably supported.

[0044] In an optional embodiment: the dispersion mechanism 10 includes a dispersion plate 101, a guide hole 102, a positioning rod 103, and a compression spring 104. The positioning rod 103 is threadedly connected to the inside of the air inlet chamber 7. The dispersion plate 101 is movably mounted on the outside of the positioning rod 103. The dispersion plate 101 is provided with evenly distributed guide holes 102. The outside of the positioning rod 103 is movably mounted with a compression spring 104. The positioning rods 103 between two adjacent groups of dispersion mechanisms 10 are threadedly connected.

[0045] In this embodiment: when the steam enters the air inlet chamber 7, it first impacts the dispersion plate 101 and continues to flow through the guide hole 102. The dispersion plates 101 in the multiple groups of dispersion mechanisms 10 cooperate with each other to slow down the flow rate of the steam and reduce the impact force exerted by the steam on the superheater tube 11.

[0046] The working principle and use process of the utility model are as follows: the steam enters the air inlet cavity 7 along the air inlet 5. When the steam enters the air inlet cavity 7, it first impacts the dispersion plate 101 and overcomes the elastic force of the compression spring 104 on the dispersion plate 101, pushing the dispersion plate 101 to move, and then continues to flow through the guide holes 102 on the dispersion plate 101. The dispersion plates 101 in the multiple groups of dispersion mechanisms 10 cooperate to slow down the flow rate of the steam, thereby reducing the impact force generated when the steam enters the superheated pipe 11, and avoiding the fracture of the welding part between the superheated pipe 11 and the steam box 1; through the automatic adjustment mechanism 12, the support The supporting mechanism 13 cooperates to provide auxiliary support for the superheated tube 11, so as to prevent the end of the superheated tube 11 away from the steam box 1 from falling due to the impact of itself and the steam, and to prevent the welding position between the superheated tube 11 and the steam box 1 from breaking. The guide rod 122 in the automatic adjustment mechanism 12 is adaptively extended and retracted according to the steam pressure in the air intake chamber 7, and pushes the supporting mechanism 13 to slide outside the superheated tube 11. When the steam pressure is greater, the guide rod 122 is extended longer, and the supporting mechanism 13 is pushed closer to the far end of the superheated tube 11 by the guide rod 122, thereby improving the supporting effect of the supporting mechanism 13 on the superheated tube 11.

[0047] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler high temperature superheater treatment device, comprising a steam box (1), characterized in that: A sealed top cover (2) is fixedly mounted on the top of the steam box (1), and a sealed bottom cover (3) is fixedly mounted on the bottom. An air intake chamber (7), an air exhaust chamber (8), and a partition chamber (9) located between the air intake chamber (7) and the air exhaust chamber (8) are arranged inside the steam box (1). A plurality of superheating tubes (11) are welded to one side of the steam box (1), and one end of the superheating tube (11) is connected to the air intake chamber (7), and the other end is connected to the air exhaust chamber (8). A plurality of automatic adjustment mechanisms (12) are arranged on a side of the steam box (1) close to the superheating tube (11), and a support mechanism (13) is arranged at the end of the automatic adjustment mechanism (12). The support mechanism (13) is clamped to the outside of the superheating tube (11). A plurality of dispersion mechanisms (10) are arranged inside the air intake chamber (7).

2. A boiler high temperature superheater treatment equipment according to claim 1, characterized in that: The sealed top cover (2) and the sealed bottom cover (3) are fixedly connected to the steam box (1) by means of screws; a sealing gasket (6) is provided between the sealed top cover (2), the sealed bottom cover (3) and the steam box (1); an exhaust port (4) is welded on the sealed top cover (2), and an air inlet (5) is welded on the sealed bottom cover (3).

3. A boiler high temperature superheater treatment equipment according to claim 1, characterized in that: The superheating tubes (11) are arranged in parallel on the side of the steam box (1), and the superheating tubes (11) are of a serpentine structure as a whole.

4. A boiler high temperature superheater treatment equipment according to claim 1, characterized in that: The automatic adjustment mechanism (12) comprises a connecting outer tube (121), a guide rod (122), a sealing sleeve (123), a return spring (124), and a threaded end (125); the connecting outer tube (121) is welded to the steam box (1), the connecting outer tube (121) is in communication with the air inlet chamber (7), and the guide rod (122) is movably sleeved inside the connecting outer tube (121).

5. A boiler high temperature superheater treatment equipment according to claim 4, characterized in that: A sealing sleeve (123) matching with the guide rod (122) is nested inside the end of the connecting outer tube (121), a threaded end (125) is threadedly connected to the end of the connecting outer tube (121), and a return spring (124) is provided on the outer movable sleeve of the guide rod (122), and the return spring (124) can apply elastic force to the guide rod (122).

6. A boiler high temperature superheater treatment equipment according to claim 5, characterized in that: The support mechanism (13) comprises a support frame (131), a fixed support plate (132), a movable support plate (133), and a clamping groove (134); the support frame (131) is fixedly connected to the end of the guide rod (122); and the support frame (131) is provided with a plurality of fixed support plates (132) and movable support plates (133) that cooperate with the superheating pipe (11).

7. A boiler high temperature superheater treatment equipment according to claim 6, characterized in that: The fixed support plate (132) is welded to the inside of the support frame (131), and the movable support plate (133) is installed to the inside of the support frame (131) by means of screws. Both the fixed support plate (132) and the movable support plate (133) are provided with a clamping groove (134) that cooperates with the superheating pipe (11).

8. The boiler high temperature superheater treatment equipment according to claim 1, characterized in that: The dispersion mechanism (10) comprises a dispersion plate (101), flow guide holes (102), a positioning rod (103), and a compression spring (104); the positioning rod (103) is threadedly connected to the inside of the air inlet chamber (7); the dispersion plate (101) is movably sleeved on the outside of the positioning rod (103); the dispersion plate (101) is provided with uniformly distributed flow guide holes (102); the outside of the positioning rod (103) is movably sleeved with a compression spring (104); and the positioning rods (103) between two adjacent groups of dispersion mechanisms (10) are threadedly connected.

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