Prefabricated reinforced concrete outdoor fire hydrant

Abstract

The invention relates to the technical field of fire-fighting equipment, in particular to a prefabricated reinforced concrete outdoor fire hydrant which comprises a well chamber and a fire hydrant pipeline and accessory whole, the fire hydrant pipeline and accessory whole is arranged in the well chamber, a cover plate is arranged at the top of the well chamber, the well chamber comprises a plurality of sections of shafts, and the vertically adjacent shafts are connected in a clamped mode. And the shaft arranged at the top end is clamped with the cover plate. According to the method, the construction period is greatly shortened, the field operation time is shortened, the factorization production can ensure that the component size is accurate, the concrete is compact and the steel bars are arranged normatively, personal errors and environmental interference in cast-in-place are avoided, and the structural consistency and durability are improved.

Description

Technical Field

[0001] This invention relates to the field of fire protection facilities technology, specifically a precast reinforced concrete outdoor fire hydrant. Background Technology

[0002] Outdoor fire hydrants are an important part of urban fire protection infrastructure and are widely used along roadsides, around buildings, and in public places. The construction of traditional outdoor fire hydrant shafts mostly adopts cast-in-place reinforced concrete structures. The construction process includes multiple steps such as on-site formwork, steel bar binding, concrete pouring, curing, and formwork removal. The process is complicated, the cycle is long, and it is easily affected by environmental factors such as weather, temperature, and humidity, making it difficult to guarantee the construction quality.

[0003] In addition, cast-in-place construction requires a high level of technical skill from workers. Human error can lead to variations in structural dimensions, reinforcement arrangement, and concrete density, resulting in poor consistency of the finished product and making subsequent maintenance difficult.

[0004] Therefore, there is an urgent need for an outdoor fire hydrant structure that can be standardized, prefabricated, and quickly installed to solve the many drawbacks of traditional construction methods. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a precast reinforced concrete outdoor fire hydrant, which aims to achieve factory prefabrication and rapid on-site installation of the fire hydrant shaft, thereby improving construction efficiency and project quality.

[0006] The technical solution adopted by this invention to solve its technical problem is: A precast reinforced concrete outdoor fire hydrant includes a chamber, a fire hydrant pipe and fittings, the fire hydrant pipe and fittings are placed inside the chamber, the top of the chamber is covered with a cover plate, the chamber includes several sections of shaft, the upper and lower adjacent shafts are interlocked, and the shaft at the top is interlocked with the cover plate.

[0007] Compared with the prior art, the beneficial effects of the present invention are: All components of this invention are prefabricated in the factory, requiring only hoisting and pipe connection on site. This significantly shortens the construction cycle and reduces on-site work time. Factory production ensures accurate component dimensions, dense concrete, and standardized reinforcement arrangement, avoiding human error and environmental interference during on-site pouring, and improving structural consistency and durability. This invention introduces prefabrication technology into the field of outdoor fire hydrants, filling the gap in the existing technology of prefabricated reinforced concrete fire hydrants, and has significant technological advancement and application value.

[0008] As a preferred embodiment, a further technical solution of the present invention is: Preferably, each section of the well shaft is provided with an annular locking slot at the upper end and an annular locking block 2 that is adapted to the annular locking slot at the lower end, and adjacent sections of the well shaft are connected by the annular locking slot and the annular locking block 2.

[0009] Preferably, the lower end of the cover plate is provided with an annular locking block 1 that is adapted to the annular locking slot along its outer edge, and the cover plate is engaged with the well shaft through the annular locking block 1 and the annular locking slot.

[0010] Preferably, at least one interface is provided on the wall of the bottommost well shaft for installing fire hydrant pipes.

[0011] Preferably, a rubber sealing gasket is provided between the annular bayonet and the annular bayonet block.

[0012] Preferably, a rubber sealing gasket is provided between the annular notch and the annular block one. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure in this invention; Figure 2 This is a schematic diagram of the structure of the lowermost well shaft in this invention; Figure 3 This is a schematic diagram of the structure of the remaining well casings in this invention; Figure 4 This is a schematic diagram of the connection between the cover plate and the topmost well shaft in this invention; Figure 5 This is a schematic diagram of the connection structure between two adjacent well sections in this invention; Explanation of reference numerals in the attached drawings: 1. Well chamber; 101. Well shaft; 2. Fire hydrant pipe and fittings assembly; 3. Annular clamp; 4. Annular clamp two; 5. Cover plate; 6. Annular clamp one; 7. Rubber sealing gasket one; 8. Rubber sealing gasket two; 9. Interface; 10. Support; 11. Step. Detailed Implementation

[0014] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0015] like Figures 1 to 5 As shown, a precast reinforced concrete outdoor fire hydrant consists of a chamber 1, a fire hydrant pipe and fittings assembly 2, etc. The fire hydrant pipe and fittings assembly 2 is placed inside the chamber 1. The chamber 1 consists of a cover plate 5 and several sections of shaft 101. The cover plate 5 is engaged with the top of the uppermost shaft 101, and adjacent sections of shaft 101 are engaged with each other. Specifically: Each section of the well shaft 101 has an annular slot 3 on the outer surface of its upper port. Except for the lowest section of the well shaft 101, the lower end of the other sections of the well shaft 101 is provided with an annular locking block 4 along its outer edge. Adjacent sections of the well shaft 101 are connected as a whole by the annular slot 3 and the annular locking block 4.

[0016] The lower end of the cover plate 5 is provided with an annular locking block 6 along its outer edge. The cover plate 5 is placed on top of the uppermost well shaft 101, and the cover plate 5 is engaged with the annular locking opening 3 of the uppermost well shaft 101 through the annular locking block 6.

[0017] An annular rubber sealing gasket 7 is provided between the annular buckle 3 and the annular buckle block 6. On the inner side of the cover plate 5 and the uppermost well shaft 101, polysulfide sealant is used to fill the gap between the cover plate 5 and the uppermost well shaft 101. On the outer side of the cover plate 5 and the uppermost well shaft 101, M10 waterproof cement mortar is used to fill the gap between the cover plate 5 and the uppermost well shaft 101.

[0018] An annular rubber sealing gasket 28 is provided between the annular buckle 3 and the annular buckle block 24. After the two adjacent sections of the well barrel 101 are snapped together, the gap between the two adjacent sections of the well barrel 101 is grouted on the inside of the well barrel 101 with polysulfide sealant; the gap between the two adjacent sections of the well barrel 101 is grouted on the outside of the well barrel 101 with M10 waterproof cement mortar.

[0019] In this embodiment, at least one interface 9 is provided on the wall of the lowest well casing 101 for installing fire hydrant pipes.

[0020] The cross-section of the manhole 1 is rectangular or circular. The bottom of the manhole 1 is provided with a support 10 for fire hydrant pipes and fittings. Steps 11 are pre-embedded or reserved on the inner wall of the manhole 1 to facilitate personnel going up and down. According to the design height of the manhole 1, one or more manhole cylinders 101 can be stacked as needed.

[0021] The fire hydrant pipe and fittings assembly 2 (including fire hydrant valves, elbows, tees, etc.) is prefabricated in the factory and installed in the lowest shaft 101 of the manhole 1. At the construction site, it is connected to the main pipeline on site using the connecting pipe through interface 9.

[0022] In this embodiment, during on-site installation, the foundation is first excavated, then a subbase is laid, and the bottommost shaft 101 of the prefabricated manhole 1 is hoisted into place. Inside the manhole 1, the supports 10, steps 11, the remaining shafts 101, and the manhole cover are installed in sequence. Finally, the fire hydrant pipe is connected to the main pipe to complete the overall installation.

[0023] This invention introduces prefabrication technology into the field of outdoor fire hydrants, filling the gap in the existing technology of prefabricated reinforced concrete fire hydrants, and has significant technological advancements. All components are prefabricated in-house, requiring only hoisting and pipe connection on-site, thus shortening the construction cycle and reducing on-site work time. Factory production ensures accurate component dimensions, dense concrete, and standardized reinforcement layout, avoiding human error and environmental interference during on-site pouring, and improving structural consistency and durability. The well shaft in this invention uses standard components, and the height of the well chamber can be adjusted according to the site terrain or burial depth requirements to adapt to different engineering needs.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A precast reinforced concrete outdoor fire hydrant, comprising a manhole, a fire hydrant pipe and fittings, wherein the fire hydrant pipe and fittings are housed inside the manhole, characterized in that: The top of the well chamber is provided with a cover plate, the well chamber comprises several well shafts, the adjacent well shafts are clamped, and the well shaft at the top end is clamped between the cover plate.

2. The precast reinforced concrete outdoor hydrant of claim 1, wherein: The upper end of each well shaft is provided with an annular clamping hole, and the lower end is provided with an annular clamping block two matched with the annular clamping hole.

3. The precast reinforced concrete outdoor hydrant of claim 1, wherein: The lower end of the cover plate is provided with an annular clamping block one matched with the annular clamping hole along the outer edge, and the cover plate is clamped with the well shaft through the annular clamping block one and the annular clamping hole.

4. The precast concrete outdoor fire hydrant of claim 1, wherein: At least one interface is arranged on the wall of the well shaft at the lowermost end for installing a fire hydrant pipeline.

5. The precast concrete outdoor fire hydrant of claim 2, wherein: A rubber sealing gasket one is arranged between the annular clamping hole and the annular clamping block two.

6. The prefabricated concrete outdoor fire hydrant according to claim 3, characterized in that: A rubber sealing gasket two is arranged between the annular clamping hole and the annular clamping block one.

Images