Novel steam-water pipeline support structure

Abstract

The utility model discloses a novel steam-water pipeline support structure, belongs to the field of power pipelines, and solves the problems of falling, non-uniform stress and damage to a heat preservation shell hoop plate caused by free sliding of an existing flat plate sliding support. The device comprises a bottom plate and a supporting plate, a plurality of pin rollers are arranged on the supporting plate side by side, the pin rollers are perpendicular to a pipeline, and the bottom plate is placed on the pin rollers; baffles are arranged around the top of the supporting plate. Gaps are formed between the side faces of the rollers on the two sides and the baffles. And two limiting plates are arranged at the bottom of the bottom plate, are parallel to the rollers and are attached to the rollers on the two sides respectively. A traditional support structural form is changed, a pin roller form is adopted, the bottom plate and the supporting plate can freely slide within a certain range, the action mechanism of the pipeline support is improved, force transmission reliability is improved, a heat preservation shell hoop plate is prevented from being damaged, safe and stable operation of a pipeline is guaranteed, and horizontal load borne by a lower supporting structure can be effectively reduced. And the economical efficiency is improved by reducing the section of the lower supporting structure.

Description

Technical Field

[0001] The utility model belongs to the field of power pipelines, and in particular relates to a novel steam-water pipeline support structure. Background Art

[0002] The design and installation of steam and water pipe brackets in power stations and heating stations is an extremely important sub-project. With the increase of unit capacity parameters and the increase of pipe diameter, the steam and water pipe brackets not only bear the large vertical load of the pipes, but also generate large longitudinal thrust. The power pipes are prone to vibrations during high-pressure water flow, steam shock and earthquakes. The radial slippage of the pipes should be strictly limited to prevent the pipes from slipping and warping up and falling out, and the longitudinal slippage of the pipes should be controlled. In the past, the installation and construction of pipe brackets mostly used the welded flat plate sliding brackets recommended by the "Design Manual for Steam and Water Pipe Supports in Thermal Power Plants".

[0003] The flat plate sliding bracket has the following defects: 1. A polytetrafluoroethylene lining is arranged between the bottom plate and the support plate, and the friction coefficient is relatively high, which generates a large horizontal thrust on the lower structure; 2. The bracket slides freely in the radial direction, and the superimposed axial sliding is prone to deflection and air gap, and the base structure is unevenly stressed; 3. The insulation shell hoop plate outside the pipeline is easily damaged as the bracket slides.

[0004] The defects of the existing flat sliding bracket can easily cause uneven stress on the bracket pipe, damage the insulation shell hoop plate, and affect the safe operation of the steam-water pipeline. Utility Model Content

[0005] The utility model aims to provide a novel steam-water pipeline support structure to solve the problems of falling off, uneven stress and damage to the heat-insulating shell hoop caused by free sliding of the existing flat sliding support.

[0006] The technical solution of the utility model is: a novel soda pipe support structure, comprising a base plate and a support plate, a plurality of rollers are arranged side by side on the support plate, the rollers are arranged perpendicular to the pipes, and the base plate is placed on the rollers; baffles are arranged around the top of the support plate, and there are gaps between the side surfaces of the rollers on both sides and the baffles; two limit plates are arranged at the bottom of the base plate, the limit plates are arranged parallel to the rollers, and the two limit plates are respectively attached to the rollers on both sides.

[0007] As a further improvement of the present invention, the bottom of the limiting plate is lower than the top of the baffle.

[0008] As a further improvement of the utility model, side limit plates are arranged on a group of opposite sides of the bottom plate, the side limit plates are opposite to the ends of the rollers, the side portions of the side limit plates are close to the outer side of the baffle, and the lower ends of the side limit plates are lower than the top of the baffle.

[0009] The beneficial effects of the utility model are as follows: compared with conventional flat plate welded sliding brackets, the utility model changes the traditional bracket structure without significantly increasing the material consumption and the construction difficulty, adopts a roller form, so that the bottom plate and the support plate can slide freely within a certain range, improves the pipe bracket action mechanism, improves the force transmission reliability, avoids the damage of the insulation shell hoop plate, ensures the safe and stable operation of the pipeline, can effectively reduce the horizontal load of the lower support structure, and reduces the cross-section of the lower support structure to improve its economy. The utility model ensures the reliable sliding of the bracket and avoids the slipping of the bottom plate and the pipeline through the mutual cooperation between the baffle, the limit plate, and the side limit plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an existing flat plate sliding bracket;

[0011] Figure 2 yes Figure 1 Side view of

[0012] Figure 3 It is a structural schematic diagram of the utility model;

[0013] Figure 4 yes Figure 3 Side view of

[0014] Figure 5 It is a structural schematic diagram of the support plate in the utility model.

[0015] In the figure: 1- transverse support plate; 2- longitudinal connecting plate; 3- bottom plate; 4- polytetrafluoroethylene lining plate; 5- baffle plate; 6- roller; 7- side limit plate; 8- support plate; 9- limit plate; 10- pipe; 11- insulation shell hoop plate. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in conjunction with the accompanying drawings.

[0017] The structure of the existing flat plate sliding bracket is as follows Figure 1 , Figure 2 As shown, two transverse support plates 1 are arranged on the bottom plate 3, and the two ends of the two transverse support plates 1 are connected by longitudinal connecting plates 2 respectively; the pipeline 10 is arranged on the transverse support plate 1, and the outside of the pipeline 10 is provided with a heat-insulating shell hoop plate 11; the bottom plate 3 and the support plate 8 are both flat plate structures, and a polytetrafluoroethylene liner 4 is arranged between the bottom plate 3 and the support plate 8. The expansion force and horizontal thrust of the pipeline 10 are released by the mutual sliding friction of the polytetrafluoroethylene liner 4 between the bottom plate 3 and the support plate 8. The bottom plate 3 and the support plate 8 slide freely and are prone to deflection and evacuation, and the force transmission is unreliable.

[0018] The utility model Figure 3-5As shown, a novel steam-water pipe support structure comprises a base plate 3 and a support plate 8. Two transverse support plates 1 are arranged on the base plate 3. The two ends of the two transverse support plates 1 are connected by longitudinal connecting plates 2 respectively. The pipe 10 is welded to the transverse support plates 1 and the longitudinal connecting plates 2. A plurality of rollers 6 are arranged side by side on the support plate 8. The rollers 6 are arranged perpendicular to the pipes 10. The base plate 3 is placed on the rollers 6. Baffle plates 5 are arranged around the top of the support plate 8. There are gaps between the side surfaces of the rollers 6 on both sides and the baffle plates 5. Two limit plates 9 are arranged at the bottom of the base plate 3. The limit plates 9 are arranged parallel to the rollers 6. The two limit plates 9 are respectively attached to the rollers 6 on both sides.

[0019] The bottom of the limiting plate 9 is lower than the top of the baffle 5 .

[0020] A side limit plate 7 is provided on a set of opposite sides of the bottom plate 3 , the side limit plate 7 is opposite to the end of the roller 6 , the side of the side limit plate 7 is close to the outer side of the baffle 5 , and the lower end of the side limit plate 7 is lower than the top of the baffle 5 .

[0021] The diameter D of the roller 6 can be 25-30 mm. The number of rollers 6 is determined according to the vertical load of the pipeline 10. The slippage of the roller 6 is the thermal expansion of the pipeline + 30 mm. Lubricant can be applied to the outside of the roller 6 to reduce horizontal friction.

[0022] The baffle plate 5 surrounds and limits the roller 6 , and leaves gaps beside the roller 6 on both sides, which are the sliding spaces of the roller 6 .

[0023] The two limiting plates 9 define the positional relationship between the roller 6 and the bottom plate 3 .

[0024] The side limit plate 7 is made of angle steel, which is fully welded to the bottom plate 3, and the gap between the side of the side limit plate 7 and the outer side of the baffle 5 is not less than 5mm to ensure that it can slide. The side limit plate 7 prevents the bottom plate 3 from sliding and falling off radially.

[0025] Under the action of the rollers 6 , the bottom plate 3 can slide axially within a certain range to adapt to the longitudinal thrust of the pipe 10 .

[0026] The utility model proposes a new sliding bracket with reliable force transmission without significantly increasing the material consumption and the construction difficulty, so as to avoid uneven pressure on the supporting structure caused by the sliding of the pipeline bracket, reduce the horizontal thrust, and eliminate the damage to the insulation shell hoop plate 11 caused by the sliding, thereby improving the force on the bracket and the pipeline 10 and forming a reliable action and protection mechanism.

Claims

1. A new type of steam and water pipeline support structure, including a bottom plate and a support plate, characterized in that: A plurality of rollers (6) are arranged side by side on the support plate (8), the rollers (6) are arranged perpendicular to the pipe (10), and the bottom plate (3) is placed on the rollers (6); baffles (5) are arranged around the top of the support plate (8), and there are gaps between the side surfaces of the rollers (6) on both sides and the baffles (5); two limit plates (9) are arranged at the bottom of the bottom plate (3), the limit plates (9) are arranged parallel to the rollers (6), and the two limit plates (9) are respectively attached to the rollers (6) on both sides.

2. A novel steam-water pipe support structure according to claim 1, characterized in that: The bottom of the limiting plate (9) is lower than the top of the baffle (5).

3. A novel steam-water pipe support structure according to claim 1 or 2, characterized in that: A side limit plate (7) is provided on a set of opposite sides of the bottom plate (3), the side limit plate (7) is opposite to the end of the roller (6), the side of the side limit plate (7) is close to the outer side of the baffle (5), and the lower end of the side limit plate (7) is lower than the top of the baffle (5).

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