Concealed power wiring system and construction method

Abstract

The invention relates to the technical field of electric power wiring, in particular to a concealed electric power wiring system and a construction method. A concealed electric power wiring system comprises a black brick stone plate layer, a warning tape layer, a backfill soil layer, a fine sand buffer layer, a soft soil covering layer and an original soil layer from top to bottom in sequence, a cable sleeve is arranged in the soft soil covering layer in a penetrating mode, and a buried laying mode is adopted, so that the concealment and safety of cables are ensured; meanwhile, in consideration of the characteristics that a street in an ancient town is relatively narrow and cannot be excavated, the cable is fixed by using wall materials such as stones and bricks in a manner of laying along the wall, so that the stability and the safety of the cable are ensured. Compared with the prior art, power system optimization of the ancient town old street is achieved, visual zero interference is achieved, an ancient building body is prevented from being damaged, meanwhile, a built-in sensor is arranged, the maintenance time can be greatly shortened when an accident happens, and the device is particularly suitable for the ancient town old street which is not suitable for being excavated substantially.

Description

Technical Field

[0001] The present invention relates to the technical field of power wiring, and more specifically, to a concealed power wiring system and construction method. Background Art

[0002] With the development of tourism and the improvement of residents' living standards, ancient towns need to vigorously develop tourism, and the power demand in the old streets of ancient towns has increased sharply, including new loads such as night landscape lighting, merchant equipment power consumption, and new energy charging piles. However, most ancient towns are made of wooden houses and stone slab streets, with fragile building structures. Coupled with the need to protect the architectural style, traditional power transformation faces two core contradictions: construction methods such as overhead wiring and drilling and nailing are likely to damage the main body of ancient buildings. For example, drilling holes in wooden beams can cause damage to the load-bearing structure, easily damaging the already fragile and old ancient buildings. Grooving the wall will damage the original brick carvings or the wall surface. Modern power equipment such as PVC wire pipes and metal cable trays will seriously conflict with the traditional landscape of blue bricks and grey tiles, affecting the tourist experience and cultural inheritance value. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a concealed power wiring system and construction method. By adopting the method of buried laying, the concealment and safety of the cable are ensured. At the same time, considering the characteristics of narrow ancient town streets and the inability to excavate, the method of laying along the wall is adopted, and wall materials such as stones and bricks are used to fix the cable, ensuring the stability and safety of the cable.

[0004] To achieve the above object, a concealed power wiring system is designed. The power wiring system from top to bottom is successively a blue brick and stone slab layer, a warning tape layer, a backfill soil layer, a fine sand buffer layer, a soft soil covering layer, and a native soil layer. A cable sleeve is penetrated in the soft soil covering layer.

[0005] In the warning tape layer, a sensor three is inserted every 1 - 2 m. The upper end of the sensor three is clamped into the blue brick and stone slab layer, and the lower end of the sensor three is clamped into the backfill soil layer. A sensor one is arranged in the fine sand buffer layer, and a sensor two is sleeved on the cable sleeve.

[0006] The blue brick and stone slab layer is composed of blue bricks or stone slabs laid. The standard number of the blue bricks is JC / T 2185 - 2013, and the specification is 240×115×53 mm. The joints between the blue bricks are made with lime mortar.

[0007] The warning tape layer is a thin plate with a thickness of about 3 cm. The thin plate is made of fluorescent material.

[0008] The backfill soil layer is made of native soil mixed with 10% lime.

[0009] The thickness of the fine sand buffer layer is 10 cm, and the sand diameter of the fine sand is less than 2 mm.

[0010] The thickness of the soft soil covering layer is 20 cm.

[0011] The first sensor is a humidity sensor with the model number SHT45; the second sensor is a distributed optical fiber sensor with the model number DTSX3000; the third sensor is a pressure sensor with the model number PX409-050G5V.

[0012] A construction method for a concealed power wiring system is as follows: S1: Dig a soil pit on the ground, ensuring that the center line of the soil pit is more than 1.5 m away from the surrounding buildings. Clean the site around the soil pit and compact the original soil layer at the bottom to ensure that the original soil layer is flat and stable; S2: Lay a soft soil covering layer with a thickness of 20 cm on the compacted original soil, and bury a cable sleeve with the second sensor in this layer; S3: Lay a fine sand buffer layer with a thickness of 10 cm on the soft soil covering layer, and pre-embed the first sensor in the fine sand buffer layer; S4: Mix the excavated original soil with 10% lime evenly to form a backfill soil layer, cover it on the fine sand buffer layer and compact it; S5: Lay thin plates with fluorescent materials on the backfill soil layer, insert the third sensor into every 1-2 thin plates, the lower end of the third sensor is clamped into the backfill soil layer, and the upper end is reserved to the joint position of the blue brick and stone slab layer; S6: Lay standard-sized blue bricks or stone slabs on the surface of the stone slabs, and fill the joints with lime mortar.

[0013] Compared with the prior art, the present invention realizes the optimization of the power system in the ancient town and old street, has zero interference visually, avoids damage to the ancient building body. At the same time, it is equipped with built-in sensors, which can greatly shorten the maintenance time in case of an accident, and is especially suitable for historical and cultural blocks such as ancient town and old street where large-scale excavation is not suitable. Brief Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the power wiring system.

[0015] Figure 2 It is a flow chart of the power wiring system.

[0016] See Figure 1 , 1 is the blue brick and stone slab layer, 101 is the lime mortar, 2 is the warning tape layer, 3 is the backfill soil layer, 4 is the fine sand buffer layer, 5 is the cable sleeve, 6 is the soft soil covering layer, 7 is the original soil layer, 8 is the first sensor, 9 is the second sensor, 10 is the third sensor. Detailed Embodiment

[0017] The following further describes the present invention according to the drawings.

[0018] As Figure 1As shown in the figure, the power wiring system from top to bottom is successively the blue brick and stone slab layer 1, the warning tape layer 2, the backfill soil layer 3, the fine sand buffer layer 4, the soft soil covering layer 6, and the original soil layer 7. A cable sleeve 5 is penetrated in the soft soil covering layer 6.

[0019] In the warning tape layer 2, a sensor three 10 is inserted every 1 - 2 m. The upper end of the sensor three 10 is clamped into the blue brick and stone slab layer 1, and the lower end of the sensor three 10 is clamped into the backfill soil layer 3. A sensor one 8 is provided in the fine sand buffer layer 4, and a sensor two 9 is sleeved on the cable sleeve 5.

[0020] The blue brick and stone slab layer 1 is composed of blue bricks or stone slabs laid. The standard number of the blue bricks is JC / T 2185 - 2013, and the specification is 240×115×53 mm. The joints between the blue bricks are made by lime mortar 101. The blue brick and stone slab layer 1 plays a role in restoring the original appearance of the ground surface, reducing the visual difference from the original appearance, and further playing a hidden role.

[0021] The warning tape layer 2 is a thin plate with a thickness of about 3 cm. The thin plate is made of fluorescent material, and the words "underground cable" are marked on the warning tape layer 2, which can play a warning role to prevent technicians from accidentally digging the wires during maintenance.

[0022] The backfill soil layer 3 is made of the original soil mixed with 10% lime, and the backfill soil layer 3 plays a role in preventing settlement.

[0023] The thickness of the fine sand buffer layer 4 is 10 cm, the sand diameter of the fine sand is less than 2 mm. The fine sand buffer layer 4 buffers mechanical pressure and protects the cable outer skin. The fine sand buffer layer 4 can also play a role in filtering impurities, preventing the loss of soft soil particles, and can improve the overall impermeability.

[0024] The thickness of the soft soil covering layer 6 is 20 cm, and the soft soil covering layer 6 can play a role in secondary buffering to avoid damage to the cable by sharp objects.

[0025] Sensor 1 8 is a humidity sensor, model SHT45, this model is suitable for long-term burial, and has low power consumption when in standby mode. A group of humidity sensors are arranged every 20 meters, and the fine sand layer is close to the cable casing 5, which can sense the humidity increase caused by water seepage at the earliest. Sensor 1 8 chooses LoRaWAN for wireless transmission to avoid additional wiring destroying concealment. Sensor 2 9 is a distributed optical fiber sensor, model DTSX3000. Sensor 2 9 is distributed at the joints and bending points of the cable, and can detect faults and abnormal temperature rise. This model has high mechanical protection and is suitable for the complex underground environment of the ancient town. The cable joints are mainly detected. Sensor 2 9 is connected to a remote terminal unit to remotely detect the temperature of the cable street. Sensor 3 10 is a pressure sensor, model PX409-050G5V. Sensor 3 10 can detect the pressure of vehicles or tourists stepping on it. When the pressure is exceeded, a timely warning is issued to prevent the cable from being squeezed and deformed. Sensor 3 10 is connected to a remote terminal unit to detect the pressure.

[0026] like Figure 2 As shown, the specific steps of the present invention are as follows: S1, dig a pit on the ground, ensure that the distance between the center line of the pit and the surrounding buildings is greater than 1.5m, clean the area around the pit, compact the bottom original soil layer 7, and ensure that the original soil layer 7 is flat and stable, S2, lay a soft soil cover layer 6 with a thickness of 20cm on the compacted original soil, and bury a cable sleeve 5 with a sensor 9 in this layer. The sensor 9 can detect temperature anomalies caused by overload or short circuit of the cable, S3: lay a fine sand buffer layer 4 with a thickness of 10cm on the soft soil cover layer 6, and the fine sand buffer layer 4 is pre-buried with sensors 9. Sensor 18, sensor 18 detects the risk of water accumulation around the fine sand layer and the cable, S4: mix the excavated original soil with 10% lime evenly to form a backfill soil layer 3, cover it on the fine sand buffer layer 4 and compact it, S5: lay a thin plate with fluorescent material on the top of the backfill soil layer 3, insert sensor 3 10 into every 1~2 thin plates, the lower end of sensor 3 10 is stuck in the backfill soil layer 3, and the upper end is reserved to the joint position of the blue brick and stone slab layer 1. Sensor 3 10 can warn of deformation of the wire, S6, lay blue bricks or stone slabs of standard size on the surface of the stone slab, and fill the joints with lime mortar 101.

Claims

1. A concealed power wiring system, comprising a power wiring system, characterized in that: The power wiring system comprises, from top to bottom, a blue brick and stone slab layer (1), a warning tape layer (2), a backfill soil layer (3), a fine sand buffer layer (4), a soft soil cover layer (6), and an original soil layer (7), wherein a cable casing (5) is inserted into the soft soil cover layer (6); Sensor three (10) is inserted into the warning tape layer (2) every 1 to 2 m, the upper end of the sensor three (10) is inserted into the blue brick and stone slab layer (1), the lower end of the sensor three (10) is inserted into the backfill soil layer (3), the fine sand buffer layer (4) is provided with sensor one (8), and the cable sheath (5) is provided with sensor two (9).

2. A concealed power wiring system according to claim 1, characterized in that: The blue brick and stone slab layer (1) is composed of blue bricks or stone slabs. The standard number of blue bricks is JC / T 2185-2013, and the specifications are 240×115×53 mm. The blue bricks are connected by lime mortar (101).

3. A concealed power wiring system according to claim 1, characterized in that: The warning tape layer (2) is a thin plate with a thickness of about 3 cm, and the thin plate is made of fluorescent material.

4. A concealed power wiring system according to claim 1, characterized in that: The backfill soil layer (3) is made of original soil mixed with 10% lime.

5. A concealed power wiring system according to claim 1, characterized in that: The thickness of the fine sand buffer layer (4) is 10 cm, and the diameter of the fine sand is less than 2 mm.

6. A concealed power wiring system according to claim 1, characterized in that: The soft soil covering layer (6) has a thickness of 20 cm.

7. A concealed power wiring system according to claim 1, characterized in that: The sensor 1 (8) is a humidity sensor, model SHT45; the sensor 2 (9) is a distributed optical fiber sensor, model DTSX3000; the sensor 3 (10) is a pressure sensor, model PX409-050G5V.

8. A method for constructing a concealed power wiring system as claimed in any one of claims 1 to 7, wherein the specific steps are as follows: S1: digging a pit on the ground, ensuring that the distance between the center line of the pit and the surrounding buildings is greater than 1.5 m, cleaning the area around the pit, compacting the bottom original soil layer (7), and ensuring that the original soil layer (7) is flat and stable; S2: laying a soft soil cover layer (6) with a thickness of 20 cm on the compacted original soil, and burying a cable sheath (5) with a second sensor (9) in this layer; S3: laying a cable sheath (5) with a thickness of 10 A fine sand buffer layer (4) of 100 cm is formed, and a sensor 1 (8) is pre-buried and distributed in the fine sand buffer layer (4); S4: the excavated original soil is mixed with 10% lime to form a backfill soil layer (3), which is covered on the fine sand buffer layer (4) and compacted; S5: a thin plate with fluorescent material is laid on the backfill soil layer (3), and a sensor 3 (10) is inserted into every 1 to 2 thin plates, the lower end of the sensor 3 (10) is inserted into the backfill soil layer (3), and the upper end is reserved to the joint position of the blue brick and stone slab layer (1); S6: blue bricks or stone slabs of standard size are laid on the surface of the stone slab, and the joints are filled with lime mortar (101).

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