Fixing device for keeping pitch of tube panel of heating surface of boiler
Technical Field
The utility model relates to the technical field of pipe positioning, in particular to a fixing device for keeping the pitch of a pipe screen of a heating surface of a boiler.
Background
The convection heating surface tube panel of the boiler, and the panel superheater and the reheater which are suspended above the hearth, the pitch of the tubes is generally larger, and the pitch is changed due to uneven deformation of the tubes in the running process, so that the flue gas scouring and heat transfer are affected. In the past, positioning blocks were welded to adjacent tubes respectively so that the distance between the tubes was kept constant. Such a method has at least three major disadvantages: firstly, the deformation that the pipe is heated unevenly can cause stress concentration, often can strain, makes the pipe break even, leaks and stops the stove, secondly welds the qualified welder that requires the exquisite technique directly on the pipe with the locating piece, thirdly the intensity of locating piece itself often is higher than the pipe, consequently easily causes the damage of pipe.
The patent number CN202532434U discloses a fixing device for keeping the pitch of a tube panel of a heating surface of a boiler, which is characterized by comprising a first clamping piece and a second clamping piece, wherein the first clamping piece comprises a first steel plate and a first connecting tube, the first steel plate is connected with the first tube, one side of the first connecting tube is connected with the first steel plate, the other side of the first connecting tube is provided with a notch, the second clamping piece comprises a second steel plate and a second connecting tube, the second connecting tube is arranged in the first connecting tube, the second connecting tube is connected with one end of the connecting piece, the other end of the connecting piece is exposed from the notch of the first connecting tube and is connected with the second connecting tube, and the second connecting tube is connected with the second tube. The utility model accords with the principle that the clamping piece is damaged firstly when stress is concentrated, and is convenient to install. Although the device is feasible and convenient to install, the device cannot be adjusted according to the distance between the pipe bodies and the specification of the pipe bodies in the actual use process, so that the practicability of the device is reduced.
Disclosure of Invention
The technical aim of the utility model is realized by the following technical scheme: the fixing device for keeping the pitch of the tube panel of the heating surface of the boiler comprises a fixing frame, wherein a telescopic rod is fixedly connected to the outer surface of the fixing frame, a positioning frame is fixedly connected to one end, far away from the fixing frame, of the telescopic rod, a bidirectional internal thread tube is movably connected to the inner wall of the fixing frame, a screw rod is connected to the inner thread of the bidirectional internal thread tube, one end of the screw rod is fixedly connected with the positioning frame, a worm wheel is fixedly connected to the outer surface of the bidirectional internal thread tube, a worm is inserted into the fixing frame, and the worm is movably connected with the worm wheel;
the inside interlude of locating frame is provided with the two-way threaded rod, the surface threaded connection of two-way threaded rod has the screw sleeve, screw sleeve's surface fixedly connected with connecting seat, the surface fixedly connected with arc seat of connecting seat, the inside interlude of connecting seat is provided with the gag lever post, the surface fixedly connected with rubber pad of arc seat, the surface of rubber pad is provided with the gasket, the surface connection of gasket has the body.
Preferably, the outer surfaces of the fixing frame and the positioning frame are coated with anti-corrosion paint, and the thickness of the anti-corrosion paint is one millimeter to three millimeters.
Preferably, the telescopic rods are uniformly distributed on two sides of the outer surface of the fixed frame, and the number of the telescopic rods is four and divided into two groups.
Preferably, the bidirectional internal thread pipe is formed by welding two internal thread pipes with opposite threads, and two ends of the bidirectional internal thread pipe are movably connected with the inner wall of the fixed frame through bearing seats.
Preferably, one end of the worm is movably connected with the inner wall of the fixed frame through a bearing seat, the other end of the worm is fixedly connected with a rotating handle, and the outer surface of the rotating handle is fixedly connected with an anti-skid sleeve.
Preferably, one end of the bidirectional threaded rod is movably connected with the inner wall of the positioning frame through a bearing seat, the other end of the bidirectional threaded rod is fixedly connected with a rotating button, and the outer surface of the rotating button is fixedly connected with a rotating button.
Preferably, the outer surface of the arc-shaped seat is fixedly connected with a rubber pad through a strong adhesive, the thickness of the rubber pad is five millimeters to seven millimeters, and an anti-corrosion protection film is smeared on the outer surface of the rubber pad.
The beneficial effects of the utility model are as follows: when the device is used, through rotating the worm, because worm and worm wheel swing joint, and worm wheel and two-way internal thread pipe fixed connection, so when rotating the worm, can drive two-way internal thread pipe and rotate, because two-way internal thread pipe and lead screw threaded connection, so when two-way internal thread pipe rotates, can order about the lead screw and remove along two-way internal thread pipe, because lead screw and locating frame fixed connection, when the lead screw removes, can drive the locating frame and remove to can make the device adjust according to the distance between the body.
Through rotating the two-way threaded rod, because the two-way threaded rod removes with the connecting seat through threaded sleeve, and two-way threaded rod and threaded sleeve threaded connection, so when rotating the two-way threaded rod, can order about threaded sleeve to drive the connecting seat and remove along the gag lever post, because connecting seat and arc seat fixed connection, when the connecting seat removes, can drive the arc seat and remove to can make the device adjust according to the specification of body, and then can improve the practicality of device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of the entire present utility model.
Fig. 2 is a schematic view of the internal structure of the present utility model.
Fig. 3 is an enlarged view of the utility model at a in fig. 2.
Fig. 4 is a schematic view of the structure of the present utility model in use.
In the figure, 1, a fixed frame; 2. a telescopic rod; 3. a positioning frame; 4. a double-direction internal thread tube; 5. a screw rod; 6. a worm wheel; 7. a worm; 8. a two-way threaded rod; 9. a threaded sleeve; 10. a connecting seat; 11. an arc-shaped seat; 12. a limit rod; 13. a rubber pad; 14. a gasket; 15. a tube body.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Referring to figures 1-4 of the drawings,
example 1: the outer surface of the fixed frame 1 is fixedly connected with a telescopic rod 2, one end of the telescopic rod 2 far away from the fixed frame 1 is fixedly connected with a positioning frame 3, the inner wall of the fixed frame 1 is movably connected with a bidirectional inner threaded pipe 4, the inner thread of the bidirectional inner threaded pipe 4 is connected with a screw rod 5, one end of the screw rod 5 is fixedly connected with the positioning frame 3, the outer surface of the bidirectional inner threaded pipe 4 is fixedly connected with a worm wheel 6, the inside of the fixed frame 1 is penetrated and provided with a worm 7, the worm 7 and the worm wheel 6 are movably connected, through rotating the worm 7, the worm wheel 6 is movably connected with the worm wheel 6, and the bidirectional inner threaded pipe 4 is fixedly connected with the screw rod 5, when the worm 7 is rotated, the bidirectional inner threaded pipe 4 is in threaded connection with the screw rod 5, the screw rod 5 is driven to move along the bidirectional inner threaded pipe 4, and when the screw rod 5 is fixedly connected with the positioning frame 3, the screw rod 5 is driven to move, and the device can be adjusted according to the distance between pipe bodies 15;
example 2: the inside interlude of location frame 3 is provided with two-way threaded rod 8, the surface threaded connection of two-way threaded rod 8 has screw sleeve 9, screw sleeve 9's surface fixedly connected with connecting seat 10, connecting seat 10's surface fixedly connected with arc seat 11, connecting seat 10's inside interlude is provided with gag lever post 12, arc seat 11's surface fixedly connected with rubber pad 13, rubber pad 13's surface is provided with gasket 14, gasket 14's surface is connected with body 15, through rotating two-way threaded rod 8, because two-way threaded rod 8 moves with connecting seat 10 through screw sleeve 9, and two-way threaded rod 8 and screw sleeve 9 threaded connection, so when rotating two-way threaded rod 8, can order about screw sleeve 9 to drive connecting seat 10 and remove along gag lever post 12, because connecting seat 10 and arc seat 11 fixed connection, so when connecting seat 10 removes, can drive arc seat 11 and remove, thereby can make the device adjust according to body 15's specification, and then can improve the practicality of device.
Working principle: the safety of each structure of this device is inspected before the use, when the device is used, through rotating worm 7, because worm 7 and worm wheel 6 swing joint, and worm wheel 6 and two-way internal thread pipe 4 fixed connection, so when rotating worm 7, can drive two-way internal thread pipe 4 and rotate, because two-way internal thread pipe 4 and lead screw 5 threaded connection, so when two-way internal thread pipe 4 carries out pivoted, can order about lead screw 5 to remove along two-way internal thread pipe 4, because lead screw 5 and locating frame 3 fixed connection, so when lead screw 5 removes, can drive locating frame 3 and remove, thereby can make the device adjust according to the distance between the body 15, simultaneously through rotating two-way threaded rod 8, because two-way threaded rod 8 moves with connecting seat 10 through threaded sleeve 9, and two-way threaded rod 8 and threaded sleeve 9 threaded connection, so when rotating two-way threaded rod 8, can order about threaded sleeve 9 drive connecting seat 10 and remove along spacing pole 12, because connecting seat 10 and arc seat 11 fixed connection, so when connecting seat 10 moves, can drive the device according to the arc, thereby can carry out the moving according to the size of the body 15.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus, may include such elements, standard elements as may be commercially available from a market and may be customized according to the description of the specification and drawings, the particular manner of connection of such elements may be by conventional means well known in the art, such that such elements, machines, parts, and apparatus are of a type commonly employed in the art, and such that such connection is commonly employed in the art, and will not be described in detail herein.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.