CN210485688U - Inner sleeve supporting device of desuperheater - Google Patents
Inner sleeve supporting device of desuperheater Download PDFInfo
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- CN210485688U CN210485688U CN201921229206.6U CN201921229206U CN210485688U CN 210485688 U CN210485688 U CN 210485688U CN 201921229206 U CN201921229206 U CN 201921229206U CN 210485688 U CN210485688 U CN 210485688U
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- desuperheater
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- inner sleeve
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Abstract
The utility model provides a desuperheater inner skleeve strutting arrangement, including desuperheater body barrel, inner skleeve, fixed bearing structure and slip bearing structure. The structural form of the supporting device overcomes the defects of the prior art, and is the supporting device for the inner sleeve of the desuperheater, which does not need to open a hole on the cylinder body of the desuperheater body. This bearing structure form under the prerequisite that does not change major structure, avoids trompil and welding on the desuperheater body barrel, and the fixed and longitudinal sliding of inner skleeve are realized to threaded connection and screw thread regulation between application bolt and the nut. One end of the inner sleeve can be expanded freely during operation, so that the stability of the supporting structure is improved, the structure is more compact, the installation is convenient, the thermal displacement in the working state is fully considered, and the safety and the reliability of the inner sleeve in the operation process of the desuperheater are improved.
Description
Technical Field
The utility model relates to a desuperheater inner skleeve strutting arrangement belongs to boiler and receives a technical field.
Background
The superheater and the reheater are important components of the boiler and are used for increasing the enthalpy of steam so as to improve the thermodynamic cycle efficiency of the power plant. Desuperheaters of the superheater and the reheater are installed on a boiler pipeline, and the steam temperature of inlets of the superheater and the reheater is changed in a water spraying cooling mode, so that the superheated and reheated steam temperature of an outlet is controlled. And maintaining the outlet steam temperature of the superheater and the reheater within an allowable range, so that the temperature of the pipe wall does not exceed an allowable working temperature, and protecting the superheater and the reheater. In the existing desuperheater inner sleeve supporting structure form of a superheater and a reheater frequently adopted in a conventional boiler, an inner sleeve is supported in a mode that a fixing nut and a supporting bolt are utilized to open a hole in a desuperheater body cylinder and are welded with the desuperheater body cylinder in a sealing mode, and the inner sleeve is fixed or one end of the inner sleeve is fixed while the other end of the inner sleeve can axially expand and slide. Referring to the attached drawings, fig. 1 and 2 show the inner sleeve supporting structure of the desuperheater of the superheater and the reheater which are frequently used in the conventional boiler at present, and one is as follows: the inner sleeve 2 is supported by a support bolt I5 through an opening on the cylinder 1 of the desuperheater body, one end of the inner sleeve is connected with the inner sleeve 2 in a welding mode through a gasket 4, the other end of the inner sleeve is connected with a fixing nut I3 on the outer side wall of the cylinder 1 of the desuperheater body, and finally the inner sleeve is fixed in a welding mode to form a fixed support structure. The second is that: the supporting bolt I5 is connected with the first fixing nut 3 on the outer side wall of the desuperheater body barrel 1 through the opening on the desuperheater body barrel 1, one end of the first fixing bolt is pressed against the hard surfacing layer 6 on the outer side wall of the inner sleeve 2, and the other end of the first fixing bolt is welded and fixed to the first fixing nut 3 on the outer side wall of the desuperheater body barrel 1 to form a. Because the fixing nut and the supporting bolt need to be provided with the holes on the cylinder body of the desuperheater body and are welded with the cylinder body of the desuperheater body in a sealing way, certain technological requirements are met when the bolt and the cylinder body of the desuperheater body are welded in a sealing way. Welding the sealing weld joint on the outer surface of the cylinder body of the desuperheater body at least twice; and welding the counter bores at the head part of the bolt after the periphery is sealed and welded. Under the working condition environment of high temperature, high pressure and vibration in a hearth in the operation process of a boiler, if the support structure has welding defects or is not subjected to heat treatment in place, the conditions of obvious stress concentration, easy crack occurrence, even fracture or falling off and the like are easily caused. These drawbacks become a problem that needs to be solved in the art at present. The technical field needs to provide a desuperheater inner sleeve supporting device which is easy to install and does not need to open a hole in a desuperheater body barrel.
Disclosure of Invention
The utility model aims at solving the technical problem that the inner sleeve supporting structure of the existing desuperheater is easy to have welding defects, easy to concentrate stress, easy to crack and even to break or fall off.
In order to solve the problem, the utility model adopts the technical scheme that an inner sleeve supporting device of a desuperheater is provided, which is characterized in that: comprises a desuperheater body cylinder, an inner sleeve, a fixed supporting structure and a sliding supporting structure; an inner sleeve is sleeved in the cylinder body of the desuperheater body; the desuperheater body barrel is provided with a desuperheater nozzle, a fixed supporting structure is arranged between an inner sleeve close to one end of the desuperheater nozzle and the desuperheater body barrel, and a sliding supporting structure is arranged between the inner sleeve far away from the desuperheater nozzle and the desuperheater body barrel; the fixed supporting structure comprises supporting nuts, fixing nuts and supporting bolts, the supporting nuts are uniformly distributed on the circumference of the annular cross section of the inner side wall of the inner sleeve, the fixing nuts corresponding to the supporting nuts are uniformly distributed on the circumference of the annular cross section of the inner side wall of the cylinder body of the desuperheater body, one end of each supporting bolt is connected with one supporting nut, and the other end of each supporting bolt is connected with one fixing nut; the sliding support structure comprises a support nut and a support bolt, wherein the support nut is uniformly distributed on the circumference of the annular cross section of the inner side wall of the inner sleeve, one end of the support bolt is connected with the support nut, and the end surface of the other end of the support bolt is supported on the inner side wall of the cylinder body of the desuperheater body.
Preferably, the number of the ring-shaped cross sections of the sliding support structure is more than or equal to 1.
Preferably, the number of the bolt connecting structures formed by uniformly distributing the support nuts, the fixing nuts and the support bolts which form the fixed support structure on the circumference of the same annular section is more than or equal to 3.
Preferably, the number of the bolt connecting structures which are uniformly distributed on the circumference of the same annular section of the support nut and the support bolt and form the sliding support structure is more than or equal to 3.
Preferably, the contact end face of the support bolt forming the sliding support structure and the inner wall of the cylinder body of the desuperheater body is a spherical surface.
The utility model discloses a bearing structure form of desuperheater inner skleeve under the prerequisite that does not change major structure, has improved bearing structure's stability, and the installation of being convenient for has fully considered operating condition heat displacement, has increased the security and the reliability of desuperheater operation process inner skleeve.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the structure is simple and reliable;
2. the desuperheater body cylinder does not need to be perforated and welded.
3. Reduce defects such as desuperheater body welding crackle, avoid leaking.
4. The support structure for the desuperheater inner sleeve takes into full account thermal expansion displacements in operation.
5. The support device for the inner sleeve of the desuperheater has simple manufacturing and installation processes and easy operation.
Drawings
Fig. 1 and 2 are schematic views of a fixing and supporting structure of an inner sleeve of a conventional desuperheater.
FIG. 3 is a schematic view of a desuperheater.
Fig. 4 is a schematic view of the inner sleeve fixing and supporting structure of the inner sleeve supporting device of the desuperheater of the present invention, which is a view from a-a in fig. 3.
Fig. 5 is a schematic view of the inner sleeve slidable supporting structure of the inner sleeve supporting device of the desuperheater of the present invention, which is a view from B to B in fig. 3.
Reference numerals: 1. the desuperheater body comprises a cylinder body 2, an inner sleeve 3, a first fixing nut 4, a gasket 5, a first support bolt 6, a hard surfacing layer 7, a desuperheater nozzle 8, a second support bolt 9, a second support nut 10, a second fixing nut
Detailed Description
In order to make the present invention more obvious and easy to understand, the preferred embodiment is described in detail with reference to the accompanying drawings, as shown in fig. 1 and 2, the inner sleeve support structure of the desuperheater of the superheater and reheater which are often used in the conventional boiler at present, the inner sleeve 2 is supported by using a support bolt 5 through an opening on the cylinder 1 of the desuperheater body, one end of the inner sleeve is welded to the inner sleeve 2 through a gasket 4, the other end of the inner sleeve is connected to a fixing nut 3 on the outer side wall of the cylinder 1 of the desuperheater body, and finally the inner sleeve is welded and fixed to form a fixed support structure. The supporting bolt I5 is connected with the fixing nut I3 on the outer side wall of the desuperheater body barrel 1 through the opening on the desuperheater body barrel 1, one end of the supporting bolt is supported on the hard surfacing layer 6 on the outer side wall of the inner sleeve 2, and the other end of the supporting bolt is welded and fixed with the fixing nut I3 on the outer side wall of the desuperheater body barrel 1 to form a sliding supporting structure. The existing technology needs to open a hole on the cylinder body 1 of the desuperheater body, so that the whole desuperheater body structure is easy to have welding defects, has obvious stress concentration and is easy to crack, even break or fall off.
As shown in fig. 3, 4 and 5, the structure of the inner sleeve supporting device of the desuperheater of the present invention is schematically illustrated. FIG. 3 is a schematic diagram of a superheater desuperheater. The supporting structure section A-A near the nozzle 7 of the desuperheater is as shown in figure 4. the utility model provides a fixed supporting structure of inner sleeve of the supporting device of the inner sleeve of the desuperheater, and the supporting structure sections B-B far away from the nozzle 7 of the desuperheater are as shown in figure 5. the utility model provides a slidable supporting structure of the inner sleeve of the supporting device of the inner sleeve of the desuperheater.
The inner sleeve fixing and sliding support structure of the desuperheater provided by the utility model is described by taking the desuperheater with the desuperheater body cylinder phi 864 multiplied by 35 and the inner sleeve phi 740 multiplied by 8 as a specific embodiment. Be close to cross-section A-A of desuperheater nozzle 7 department as shown in fig. 4 the utility model provides a desuperheater inner skleeve fixed stay structure, 8 bolted connection structures of equipartition on the circumference of hoop, the three cross-section B-B of keeping away from desuperheater nozzle 7 department is as shown in fig. 5 the utility model provides a slidable support structure of desuperheater inner skleeve strutting arrangement inner skleeve, 8 slidable bolted connection structures of equipartition on every cross-section ring type circumference.
The mounting mode of the inner sleeve fixing and supporting structure is as follows: firstly, a second fixing nut 10 is welded on the inner wall of the cylinder body 1 of the desuperheater body at a position corresponding to a second support bolt 8 on the inner sleeve 2. The supporting nut 9 is welded firmly with the fixing nut II 10 on the inner wall of the inner sleeve 2 with the opened hole. The second support bolt 8 of full thread is screwed in through the support nut 9 that has welded on the inner wall of inner skleeve 2, and then with the second fixation nut 10 that has welded on the inner wall of desuperheater body barrel 1 tightly, through the screw thread regulation of the second 8 of each support bolt on this same cross-section hoop, ensure that the second 8 of support bolt is screwed in the second fixation nut 10 on the inner wall of desuperheater body barrel 1, make inner skleeve 2 and desuperheater body barrel 1 concentric simultaneously, guarantee that the clearance of inner skleeve 2 and 1 inner wall of desuperheater body barrel is as even as possible, finally support bolt two 8 is firmly fixed with the support nut 9 spot welding on the inner wall of inner skleeve 2.
The utility model provides a slidable inner sleeve supporting structure of a desuperheater inner sleeve supporting device, as shown in figure 5. The mounting mode of the inner sleeve slidable support structure is as follows: and welding the support nut 9 on the inner wall of the inner sleeve 2 with the opened hole firmly with the position of the corresponding hole of the inner sleeve 2. And screwing the second support bolt 8 with full threads into the inner sleeve 2 through the welded support nut 9 on the inner wall of the sleeve, and screwing the second support bolt 8 to enable the second support bolt 8 to be propped against the inner wall of the cylinder 1 of the desuperheater body. The inner sleeve 2 and the desuperheater body barrel 1 are concentric through the thread adjustment of the second supporting bolt 8 with the upper ring of the section, the gap between the inner sleeve 2 and the inner wall of the desuperheater body barrel 1 is ensured to be even as much as possible, and finally, the second supporting bolt 8 and the supporting nut 9 on the inner wall of the inner sleeve 2 are firmly fixed through spot welding.
When the diameter of the inner sleeve is larger than 400mm, an operator can enter the inner sleeve to assemble a fixed supporting device and a slidable supporting device of the welding superheater and the inner sleeve of the desuperheater of the reheater. The diameter of the inner sleeve is less than 400mm, and a robot manipulator can enter the inner sleeve to assemble a fixed supporting device and a slidable supporting device of the inner sleeve of the desuperheater of the reheater and the welding superheater.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a desuperheater inner skleeve strutting arrangement which characterized in that: comprises a desuperheater body cylinder, an inner sleeve, a fixed supporting structure and a sliding supporting structure; an inner sleeve is sleeved in the cylinder body of the desuperheater body; the desuperheater body barrel is provided with a desuperheater nozzle, a fixed supporting structure is arranged between an inner sleeve close to one end of the desuperheater nozzle and the desuperheater body barrel, and a sliding supporting structure is arranged between the inner sleeve far away from the desuperheater nozzle and the desuperheater body barrel; the fixed supporting structure comprises supporting nuts, fixing nuts and supporting bolts, the supporting nuts are uniformly distributed on the circumference of the annular cross section of the inner side wall of the inner sleeve, the fixing nuts corresponding to the supporting nuts are uniformly distributed on the circumference of the annular cross section of the inner side wall of the cylinder body of the desuperheater body, one end of each supporting bolt is connected with one supporting nut, and the other end of each supporting bolt is connected with one fixing nut; the sliding support structure comprises a support nut and a support bolt, wherein the support nut is uniformly distributed on the circumference of the annular cross section of the inner side wall of the inner sleeve, one end of the support bolt is connected with the support nut, and the end surface of the other end of the support bolt is supported on the inner side wall of the cylinder body of the desuperheater body.
2. A desuperheater internal sleeve support apparatus of claim 1, wherein: the number of the annular sections of the sliding support structure is more than or equal to 1.
3. A desuperheater internal sleeve support apparatus of claim 1, wherein: the number of the bolt connecting structures formed by uniformly distributing the support nuts, the fixing nuts and the support bolts which form the fixed support structure on the circumference of the same annular section is more than or equal to 3.
4. A desuperheater internal sleeve support apparatus of claim 1, wherein: the number of the supporting nuts and the supporting bolts which form the sliding supporting structure is more than or equal to 3, and the supporting nuts and the supporting bolts are uniformly distributed on the circumference of the same annular section to form a bolt connecting structure.
5. A desuperheater internal sleeve support apparatus of claim 1, wherein: the contact end face of the support bolt forming the sliding support structure and the inner wall of the cylinder body of the desuperheater body is a spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921229206.6U CN210485688U (en) | 2019-07-31 | 2019-07-31 | Inner sleeve supporting device of desuperheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921229206.6U CN210485688U (en) | 2019-07-31 | 2019-07-31 | Inner sleeve supporting device of desuperheater |
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| Publication Number | Publication Date |
|---|---|
| CN210485688U true CN210485688U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921229206.6U Active CN210485688U (en) | 2019-07-31 | 2019-07-31 | Inner sleeve supporting device of desuperheater |
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| CN (1) | CN210485688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345467A (en) * | 2019-07-31 | 2019-10-18 | 上海锅炉厂有限公司 | A kind of desuperheater internal cover drum supporting device and installation method |
-
2019
- 2019-07-31 CN CN201921229206.6U patent/CN210485688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345467A (en) * | 2019-07-31 | 2019-10-18 | 上海锅炉厂有限公司 | A kind of desuperheater internal cover drum supporting device and installation method |
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