Heat preservation device of steel formwork firewall
By setting a cavity on the back of the steel formwork to pass steam into it and combining it with a drainage system, the problem of water loss and temperature loss of the steel formwork firewall at low temperatures is solved, and the effective insulation of the firewall and construction safety are achieved.
Patent Information
- Application Number
- CN202421485744.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In high altitude or low temperature environments in winter, steel formwork firewalls are prone to water and temperature loss during pouring, affecting construction quality and progress.
A cavity is set on the back of the steel formwork, and steam is introduced into the cavity through the intake pipe and exhaust pipe for insulation. Condensed water is discharged using the drain pipe and U-shaped pipe structure, and the size of the drain port is automatically controlled by combining the buoyancy ball and telescopic column to optimize the flow of steam and condensate.
Effectively prevent the firewall from freezing in low temperatures, slow down the solidification rate, avoid collapse caused by excessive weight of steel formwork, and improve construction efficiency and insulation effect.
Smart Images
Figure CN223088892U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of firewalls, and particularly to a heat preservation device for a steel formwork firewall. Background Art
[0002] The firewall is an important concrete structure in the substation project. Using fair-faced concrete firewall can not only improve the structural strength and safety of the firewall, but also further enhance the overall image of the substation project due to its good appearance quality.
[0003] There are generally two construction techniques for cast-in-place firewalls: one-time casting forming and composite steel formwork construction. For one-time forming construction, there is a large amount of material input and it is difficult to install the formwork. Currently, composite steel formwork construction is usually adopted. However, since the cast firewall needs a certain time to solidify, for firewalls in high-altitude areas, especially during winter construction, the low temperature will cause the firewall to lose water and heat, affecting the construction of the firewall. Content of the Utility Model
[0004] The utility model provides a heat preservation device for a steel formwork firewall to solve the problem of water loss and heat loss of the existing steel formwork firewall during the casting and forming process due to low temperature.
[0005] To achieve the above object, the utility model provides the following solution:
[0006] A heat preservation device for a steel formwork firewall includes a steel formwork and a steam generating device. The steel formwork includes a heat-conducting bottom plate, a heat-insulating back plate, and a heat-insulating frame connecting the heat-conducting bottom plate and the heat-insulating back plate. It also includes a return air pipe, an air inlet pipe and an exhaust pipe used to communicate with the cavity formed by the heat-conducting bottom plate, the heat-insulating back plate and the heat-insulating frame. The air inlet pipe is communicated with the steam generating device or the exhaust pipe of an adjacent steel formwork, and the exhaust pipe is communicated with the air inlet pipe or the return air pipe of an adjacent steel formwork.
[0007] The utility model warms the cast firewall by setting a cavity on the back of the steel formwork and introducing steam into the cavity, preventing the cast firewall from freezing water and slowing down the solidification speed under the influence of low temperature. By connecting the air inlet pipe and the exhaust pipe to connect multiple cavities in series, only one steam generating device is needed to introduce steam into all cavities. The structure is simple, and only the steps of connecting the air inlet pipe, the exhaust pipe and the return air pipe are added during installation, and the operation is simple.
[0008] Further, it also includes a drain pipe arranged on the side wall of the heat-insulating frame. The drain pipe is vertically arranged, and a drain opening communicating with the drain pipe is opened at the bottom of the cavity.
[0009] Since a part of the steam will condense into water during transmission, the condensed water in the cavity is discharged through a drain pipe communicating with the cavity, preventing excessive water accumulation in the cavity, increasing the overall weight of the steel formwork, preventing the steel formwork from collapsing due to excessive weight, and excessive condensed water will also affect the heat conduction of the steam in the cavity and reduce the heat preservation effect of the device.
[0010] Further, a funnel is provided at the inlet end of the drain pipe, and the outlet end of the drain pipe faces the funnel of the heat preservation device located below or is communicated with a return water pipe.
[0011] Since the drain pipes of the upper and lower steel formworks are not directly connected, the condensed water flowing out of the upper drain pipe is collected through a funnel to prevent the condensed water from splashing out and flowing to the outside, which may affect the disassembly and assembly of the steel formwork and the solidification of the fire wall due to low-temperature icing, etc.
[0012] Further, the bottom plate of the cavity is set to be inclined, and the lowest end of the bottom plate is connected to the drain port. This facilitates the outflow of the condensed water in the air and reduces water accumulation.
[0013] Further, the drain port adopts a U-shaped pipe.
[0014] When steam enters the cavity, it will flow out from the exhaust pipe and the drain port. The U-shaped pipe has a small diameter, and when the steam flows through the U-shaped pipe, the contact area is large, the temperature drops quickly, the condensation speed is accelerated, and the condensed water accumulates at the bottom of the U-shaped pipe, causing the U-shaped pipe to be blocked, and the steam cannot pass through the U-shaped pipe, reducing the loss of steam; when the water level of the condensed water exceeds the outlet height of the U-shaped pipe, the condensed water can normally pass through the U-shaped pipe.
[0015] Further, a filter screen is provided on the opening side of the funnel. This prevents the drain pipe from being blocked.
[0016] Further, the return water pipe is located at the bottommost part of the heat preservation device, and the drain pipe located at the bottommost part of the heat preservation device is communicated with the return water pipe. The condensed water is transported to the water storage tank through the return water pipe for secondary use.
[0017] Further, a drainage component is provided at the drain port, and the drainage component includes a groove opened at the lower end of the drain port and a telescopic column provided at the upper end of the drain port.
[0018] The size of the drain port is controlled by the telescopic column. When the condensed water is less, the size of the drain port is reduced to accelerate the speed of the condensed water blocking the drain port and reduce the steam loss. When the condensed water is more, the size of the drain port is increased to accelerate the discharge speed of the condensed water.
[0019] Further, the upper end of the telescopic column is inserted into the cavity and connected with an extension rod, and a buoyancy ball for moving the telescopic column up and down is installed at the end of the extension rod.
[0020] Automatically control the size of the drain outlet through a buoyancy ball. When the condensate does not contact the buoyancy ball, the telescopic column is at the lowest end and the size of the drain outlet is the smallest. When the condensate contacts the buoyancy ball, the buoyancy ball moves upward, driving the telescopic column to move upward and increasing the size of the drain outlet, thereby increasing the outflow rate of the condensate.
[0021] Furthermore, the maximum moving distance of the telescopic column is less than the distance between the bottom of the groove and the top of the drain outlet.
[0022] One or more technical solutions provided by the present utility model have at least the following technical effects or advantages:
[0023] (1) The present utility model warms the cast firewall by setting a cavity on the back of the steel formwork and introducing steam into the cavity, preventing the water in the cast firewall from freezing under the influence of low temperature, slowing down the solidification speed, etc., which affects the construction of the firewall.
[0024] (2) Drain the condensate in the cavity through the drain pipe connected to the cavity to prevent excessive water accumulation in the cavity, which increases the overall weight of the steel formwork and may cause the steel formwork to collapse due to excessive weight. Excessive condensate will also affect the heat conduction of the steam in the cavity and reduce the insulation effect of the device.
[0025] (3) By setting the drain outlet as a U-shaped pipe structure, the condensate can pass through while preventing the steam from passing through, reducing steam loss.
[0026] (4) Automatically control the size of the drain outlet through the buoyancy ball and the telescopic column, increasing the outflow rate of the condensate without increasing the steam loss rate. Description of the Drawings
[0027] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of the present utility model, and do not limit the embodiments of the present utility model.
[0028] Figure 1 It is a partial cross-sectional view of the insulation device in the present utility model;
[0029] Figure 2 is Figure 1 The enlarged view of part A in
[0030] Among them, 1 - heat-conducting bottom plate, 2 - heat-insulating back plate, 3 - heat-insulating frame, 4 - air inlet pipe, 5 - exhaust pipe, 6 - drain pipe, 7 - funnel, 8 - return water pipe, 9 - groove, 10 - telescopic column, 11 - extension rod, 12 - buoyancy ball. Detailed Embodiments
[0031] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.
[0032] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described within the scope hereof. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.
[0033] Embodiment 1
[0034] This embodiment provides a heat preservation device for a steel formwork firewall, as Figures 1-2 shown, which includes a steel formwork and a steam generating device. The steel formwork includes a heat-conducting bottom plate 1, a heat-insulating back plate 2, and a heat-insulating frame 3 connecting the heat-conducting bottom plate 1 and the heat-insulating back plate 2. It also includes a return air pipe, an air inlet pipe 4, and an exhaust pipe 5 for communicating with the cavity formed by the heat-conducting bottom plate 1, the heat-insulating back plate 2, and the heat-insulating frame 3. The air inlet pipe 4 is communicated with the steam generating device or the exhaust pipe 5 of an adjacent steel formwork, and the exhaust pipe 5 is communicated with the air inlet pipe 4 or the return air pipe of an adjacent steel formwork.
[0035] Among them, the steam generating device is preferably a steam boiler. The heat-conducting bottom plate 1 is the steel formwork body, and a steel formwork with good heat-conducting performance in the prior art can be used. Both the heat-insulating back plate 2 and the heat-insulating frame 3 are made of heat-insulating materials such as rock wool boards and polyurethane foam materials. The air inlet pipe 4 and the exhaust pipe 5 are preferably arranged above the cavity to prevent condensed water from entering. The cavities between the steel formworks in the same row are connected in series through the air inlet pipe 4 and the exhaust pipe 5. For example, the air inlet pipe 4 of the leftmost steel formwork is communicated with the outlet pipe of the steam generating device, and the exhaust pipe 5 is communicated with the air inlet pipe 4 of the adjacent steel formwork on the right. After being connected in series in turn, the exhaust pipe 5 of the rightmost steel formwork is communicated with the return air pipe to return the excess steam. The steel formworks in adjacent two rows can be connected in parallel or in series.
[0036] In a more preferred embodiment, it further includes a drain pipe 6 arranged on the side wall of the heat-insulating frame 3. The drain pipe 6 is arranged vertically, and a drain opening communicating with the drain pipe 6 is opened at the bottom of the cavity.
[0037] Among them, the drain pipe 6 is preferably arranged on the side wall of the cavity, which can absorb a certain amount of heat in the cavity to prevent the water in the drain pipe 6 from solidifying.
[0038] In a more preferred embodiment, a funnel 7 is provided at the inlet end of the drain pipe 6, and the outlet end of the drain pipe 6 faces the funnel 7 of the heat preservation device located below or is communicated with a return water pipe 8.
[0039] The size of the opening side of the funnel 7 is arbitrary and is determined according to the distance between the funnel 7 and the upper pipe orifice.
[0040] In a more preferred embodiment, the bottom plate of the cavity is arranged in an inclined shape, and the lowest end of the bottom plate is connected to the drain port. The inclination angle of the bottom plate of the cavity is 10° - 15°, which can ensure the contact area between the cavity and the heat-conducting bottom plate 1.
[0041] In a more preferred embodiment, the drain port adopts a U-shaped pipe.
[0042] In a more preferred embodiment, a filter screen is provided on the opening side of the funnel 7.
[0043] In a more preferred embodiment, the return water pipe 8 is located at the lowermost part of the heat preservation device, and the drain pipe 6 located at the lowermost part of the heat preservation device is communicated with the return water pipe 8.
[0044] Embodiment 2
[0045] On the basis of Embodiment 1, as Figures 1-2 shown, a drainage component is provided at the drain port, and the drainage component includes a groove 9 opened at the lower end of the drain port and a telescopic column 10 provided at the upper end of the drain port.
[0046] Among them, the telescopic column 10 and the groove 9 form a U-shaped pipe. By the telescopic movement of the telescopic column 10, the diameter size of the U-shaped pipe is changed. The width of the telescopic column 10 is smaller than the width of the groove 9, and the height of the groove 9 is smaller than the width of the drain port.
[0047] In a more preferred embodiment, the upper end of the telescopic column 10 is inserted into the cavity and connected with an extension rod 11, and a buoyancy ball 12 for moving the telescopic column 10 up and down is installed at the end of the extension rod 11.
[0048] Among them, the telescopic column 10 is embedded in the heat insulation frame 3 and forms an "n" - shaped structure with the extension rod 11. The lowest height of the buoyancy ball 12 is higher than the upper side wall of the drain port, that is, when the water level of the condensed water exceeds the drain port, the telescopic column 10 will rise to increase the size of the drain port.
[0049] In a more preferred embodiment, the maximum moving distance of the telescopic column 10 is smaller than the distance between the bottom of the groove 9 and the top of the drain port.
[0050] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0051] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.
Claims
1. A heat preservation device for a steel formwork firewall, comprising a steel formwork and a steam generating device, characterized in that, The steel formwork includes a heat-conducting bottom plate (1), a heat-insulating back plate (2), and a heat-insulating frame (3) connecting the heat-conducting bottom plate (1) and the heat-insulating back plate (2). It also includes a reflux gas pipe, an air inlet pipe (4) and an exhaust pipe (5) used to communicate with the cavity formed by the heat-conducting bottom plate (1), the heat-insulating back plate (2) and the heat-insulating frame (3). The air inlet pipe (4) is communicated with the steam generating device or the exhaust pipe (5) of an adjacent steel formwork, and the exhaust pipe (5) is communicated with the air inlet pipe (4) of an adjacent steel formwork or the reflux gas pipe.
2. The thermal insulation device of a steel formwork firewall according to claim 1, characterized in that, It also includes a drain pipe (6) arranged on the side wall of the heat-insulating frame (3). The drain pipe (6) is arranged vertically, and a drain port communicating with the drain pipe (6) is opened at the bottom of the cavity.
3. The thermal insulation device for a steel formwork fire wall according to claim 2, characterized in that, A funnel (7) is provided at the inlet end of the drain pipe (6). The outlet end of the drain pipe (6) faces the funnel (7) of the heat preservation device located below or is communicated with a return water pipe (8).
4. The thermal insulation device of a steel formwork firewall according to claim 2, characterized in that, The bottom plate of the cavity is set to be inclined, and the lowest end of the bottom plate is connected to the drain port.
5. The thermal insulation device of a steel formwork firewall according to claim 2, characterized in that, The drain port adopts a U-shaped pipe.
6. The heat insulation device of a steel formwork fire wall according to claim 3, characterized in that, A filter screen is provided on the opening side of the funnel (7).
7. The heat insulation device for a steel formwork firewall according to claim 3, characterized in that, The return water pipe (8) is located at the bottommost part of the heat preservation device, and the drain pipe (6) located at the bottommost part of the heat preservation device is communicated with the return water pipe (8).
8. The thermal insulation device of a steel formwork fire wall according to claim 2, characterized in that, A drainage component is provided at the drain port. The drainage component includes a groove (9) opened at the lower end of the drain port and a telescopic column (10) arranged at the upper end of the drain port.
9. The thermal insulation device of a steel formwork firewall according to claim 8, characterized in that, The upper end of the telescopic column (10) is inserted into the cavity and connected with an extension rod (11). A buoyancy ball (12) for moving the telescopic column (10) up and down is installed at the end of the extension rod (11).
10. The thermal insulation device of a steel formwork firewall according to claim 8, characterized in that, The maximum moving distance of the telescopic column (10) is less than the distance between the bottom of the groove (9) and the top of the drain port.