Device convenient for overhauling inverted siphon section of gravity flow pipeline

Abstract

The utility model belongs to the technical field of urban drainage, and particularly relates to a device convenient for overhauling an inverted siphon section of a gravity flow pipeline. Comprising an inspection well, a water inlet pipe, a water outlet pipe and inverted siphon pipes, the inspection wells are divided into upstream and downstream inspection wells which are respectively arranged on two sides of an underground obstacle; the water inlet pipe and the water outlet pipe are respectively connected with upstream and downstream water and upstream and downstream inspection wells; the opposite faces of the two inspection wells are each provided with an isolation cavity, and the depth of the isolation cavities is larger than that of the inspection wells. The inspection well and the isolation cavity are in opening and closing connection through a gate; two ends of the inverted siphon are respectively connected to the bottoms of the upstream and downstream isolation cavities, namely, the upstream and downstream inspection wells are communicated to serve as a channel for water flow to pass through obstacles; and a pebble buffer layer is arranged at the bottom of the upstream isolation cavity. When a municipal gravity flow pipeline conflicts with an obstacle, the device is used for bypassing the obstacle through the design that the elevation is reduced by the inverted siphon; and water flow impact is eliminated, so that the service life of facilities is prolonged, and maintenance is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of city drainage, and particularly relates to a device facilitating gravity flow pipeline inverted siphon section maintenance. BACKGROUND

[0002] In the municipal drainage system, obstacles are often encountered in the design of city drainage pipelines. Since the drainage pipeline is a gravity flow, when the drainage pipeline conflicts with the elevation of the obstacle, the inverted siphon is needed to lower the elevation to avoid the obstacle. The inverted siphon may have problems such as blockage and damage during use, and needs to be regularly maintained. The traditional maintenance method has problems such as low efficiency and high safety risk, and therefore, it is particularly important to develop a device facilitating gravity flow pipeline inverted siphon section maintenance to improve the maintenance efficiency, reduce the safety risk, and ensure the normal operation of city drainage. SUMMARY

[0003] The utility model aims at designing a device facilitating gravity flow pipeline inverted siphon section maintenance which is simple in structure, perfect in function, economical in cost, and suitable for municipal drainage.

[0004] The device facilitating gravity flow pipeline inverted siphon section maintenance comprises inspection wells, water inlet pipes, water outlet pipes, and inverted siphons.

[0005] The inspection wells are two, and are divided into upstream inspection wells and downstream inspection wells.

[0006] The water inlet pipes are arranged at one end of the upstream inspection wells, and the other ends are connected to the upstream water sources to guide the water flow into the upstream inspection wells.

[0007] The water outlet pipes are arranged at one end of the downstream inspection wells, and the other ends are connected to the downstream drainage pipelines to guide the water flow out of the downstream inspection wells.

[0008] The opposite sides of the two inspection wells are respectively provided with one isolation chamber, i.e. upstream and downstream isolation chambers, and the cavity of the inspection well and the isolation chamber are separated by a partition wall. The depth of the isolation chamber is greater than that of the cavity of the inspection well. A water inlet is arranged on the partition wall and at the bottom of the cavity of the inspection well to connect the cavity of the inspection well and the isolation chamber. A gate is arranged on the water inlet.

[0009] The inverted siphons are connected to the bottoms of the upstream and downstream isolation chambers, i.e. the upstream and downstream inspection wells, to serve as the channel for the water flow to pass through the obstacle.

[0010] The bottom of the isolation chamber on one side of the upstream inspection well is provided with a pebble buffer layer to guide the water flow in the upstream inspection well to flow into the isolation chamber through the water inlet and then flow into the downstream isolation chamber through the inverted siphon.

[0011] The inspection well and the isolation chamber are both provided with manhole covers for personnel to enter, and the sidewalls of the inspection well and the isolation chamber corresponding to the position of the manhole cover are both provided with a ladder extending to the bottom.

[0012] In the utility model, the sidewall section of the connecting inlet pipe and outlet pipe of the upstream and downstream inspection well is semicircular arc, and the semicircular arc can provide multiple inlet pipes and outlet pipes for connection, so as to adapt to the requirement of multiple directions and multiple inlet pipes and outlet pipes.

[0013] In the utility model, the size of the cavity of the downstream inspection well and the downstream isolation chamber is smaller than that of the upstream inspection well and the upstream isolation chamber; the downstream inspection well is buried underground, and an independent channel for personnel to go down is arranged between the downstream inspection well and the downstream isolation chamber and the ground, and a ladder is also arranged in the channel, which can be connected to the ladders in the downstream inspection well and the downstream isolation chamber respectively.

[0014] Because the downstream isolation chamber does not need to bear the impact of water flow falling, it is not necessary to set a pebble buffer layer, and a large cavity is not necessary, so that the design can save construction materials and control the cost.

[0015] In the utility model, the isolation chamber is divided into two independent cavities by a partition, each cavity is provided with a water inlet with a gate, and the cavities are connected to the inspection well; the inverted siphon is arranged in double pipes, and each pipe is connected to the isolation chamber at the corresponding position of the upstream and downstream; in this way, when one inverted siphon and the connected isolation chamber are maintained, the other inverted siphon can ensure the smooth drainage of the device for maintaining the inverted siphon section of the gravity flow pipeline.

[0016] In the utility model, the bottom of the upstream and downstream inspection well is provided with a flow channel, and the inner groove body section of the flow channel is semicircular, which can be matched with the lower semicircle of the circular pipe-shaped inlet pipe and outlet pipe respectively; so as to optimize the water flow condition and reduce the water head loss.

[0017] In the utility model, the gate is used for controlling the opening and closing of the inverted siphon pipeline, and does not need to consume electricity, and is suitable for remote areas or environments without power supply. The pebble buffer layer is made of wear-resistant and pressure-resistant pebble material, which ensures the stability and buffering effect during long-term use.

[0018] In the utility model, the size of the inspection well, the inlet pipe, the outlet pipe, the inverted siphon, the gate, the manhole cover and the pebble buffer layer can be designed and determined according to the actual engineering requirement.

[0019] In the utility model, after the water flow is vertically converted in the upstream inspection well, the water flow impacts the pebble buffer layer in the upstream isolation chamber, and then enters the inverted siphon through the channel at the bottom of the isolation chamber after the buffering effect of the buffer layer, and flows to the downstream isolation chamber; the top of the inspection well is provided with a manhole cover for personnel to enter, which is used for workers to enter the inside of the inspection well for cleaning and maintenance.

[0020] The utility model is suitable for municipal gravity flow pipeline and obstacle conflict, and is used for bypassing the obstacle through the inverted siphon pipe lowering the design elevation; and has the effect of eliminating water flow impact to prolong the service life of facilities and facilitate maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural plane schematic view of the utility model.

[0022] Figure 2 It is a structural 1-1 cross section schematic view of the utility model.

[0023] The figure mark: 1 is upstream inspection well, 2 is inlet pipe, 3 is outlet pipe, 4 is gate, 5 is flow tank, 6 is inverted siphon pipe, 7 is maintenance opening, 8 is ladder, 9 is downstream inspection well, 10 is pebble buffer layer, 11 is isolation chamber. DETAILED DESCRIPTION

[0024] The utility model is further described below through specific embodiment.

[0025] The utility model discloses upstream inspection well 1, inlet pipe 2, outlet pipe 3, gate 4, flow tank 5, inverted siphon pipe 6, downstream inspection well 9, pebble buffer layer 10, isolation chamber 11, wherein:

[0026] Upstream inspection well 1 and downstream inspection well 9 are arranged on both sides of underground obstacle respectively and are buried in ground, and upstream inspection well 1 is close to ground, and downstream inspection well 9 is separated from ground surface by a certain distance, and the cavity size and buried depth of upstream inspection well 1 and downstream inspection well 9 are determined according to actual conditions, namely, to guarantee the inverted siphon pipe 6 connection design of inspection well bottom, guaranteeing that water flow can bypass underground obstacle from upstream to downstream through siphon principle;

[0027] Inlet pipe 2 is connected with upstream water, and is connected with upstream inspection well 1, and the angle can be adjusted according to actual direction;

[0028] Outlet pipe 3 is connected with downstream water, and is connected with downstream inspection well 9, and the angle can be adjusted according to actual direction;

[0029] The side wall section of upstream and downstream inspection well's connecting inlet pipe 2 and outlet pipe 3 is semicircular arc, and semicircular arc can provide multiple inlet pipe 2 and outlet pipe 3 connections to adapt to the requirement of multiple directions and multiple inlet pipe 2 and outlet pipe 3;

[0030] The opposite side of the upstream and downstream inspection wells is respectively provided with an isolation chamber 11, i.e. divided into upstream and downstream isolation chambers 11, and the cavity of the inspection well and the isolation chamber 11 are separated by a partition wall; the depth of the isolation chamber 11 is greater than the depth of the cavity of the inspection well; a water inlet is arranged on the partition wall and located at the bottom of the cavity of the inspection well, which can communicate the cavity of the inspection well and the isolation chamber; a gate 4 is arranged on the water inlet, and the gate 4 is opened and closed to control the water flow into the isolation chamber 11; as shown in Figure 2

[0031] After the gate 4 is closed, the water in the isolation chamber 11 is emptied, so that personnel can enter for maintenance; and no power consumption is required, which is suitable for remote areas or environments without power supply;

[0032] The inverted siphon pipe 6 is connected to the bottom of the upstream and downstream isolation chambers 11 respectively, i.e. communicates the upstream and downstream inspection wells, and serves as a channel for water flow to pass through the obstacle;

[0033] On one side of the upstream inspection well 1, the bottom of the isolation chamber 11 is provided with a pebble buffer layer 10, which can guide the water flow in the upstream inspection well to flow into the isolation chamber 11 through the water inlet, and then flow into the downstream isolation chamber 11 through the inverted siphon pipe 6; the pebble buffer layer 10 can make the water flow not directly impact the bottom and side wall of the isolation chamber 11 and the inverted siphon pipe 6 when falling, so as to reduce the impact force and prolong the service life of the isolation chamber 11 and the inverted siphon pipe 6.

[0034] The top of the upstream inspection well 1 and the downstream inspection well 9 is provided with a maintenance cover plate 7 for personnel to enter, which is used for workers to enter the inside of the upstream inspection well 1 and the downstream inspection well 9 for cleaning and maintenance; a ladder 8 is used for maintenance workers to go up and down to enter and exit the upstream inspection well 1 and the downstream inspection well 9;

[0035] The cavity size of the downstream inspection well 9 and the downstream isolation chamber is smaller than that of the upstream inspection well 1 and the upstream isolation chamber; the downstream inspection well 9 is buried underground, and a separate channel for personnel to go down is arranged between the downstream inspection well 9 and the downstream isolation chamber and the ground, and the channel is also provided with a ladder 8 which can be respectively connected to the ladders 8 in the downstream inspection well 9 and the downstream isolation chamber;

[0036] Because the downstream isolation chamber 11 does not need to withstand the impact of water flow falling, it does not need to be provided with a pebble buffer layer 10, and it does not need a larger cavity requirement, so such design can save construction materials and control costs.

[0037] The top of the upstream and downstream inspection wells and the isolation chamber 11 is provided with a maintenance opening 7 with a cover plate for personnel to enter, and the side wall of the inspection well and the isolation chamber 11 corresponding to the position of the maintenance opening 7 is provided with a ladder 8 extending to the bottom.

[0038] The upstream inspection well 1 and the downstream inspection well 9 are provided with a flow channel 5, which belongs to a conventional design, so as to optimize the water flow condition and reduce the water head loss.​

[0039] The inverted siphon pipe 6 adopts a double-pipe arrangement, and the isolation chamber 11 is also divided into two separated chambers, each of which is connected with one inverted siphon pipe 6; each separated chamber is provided with one gate 4; when one inverted siphon pipe is under maintenance, the other inverted siphon pipe can ensure the smooth drainage of the gravity pipeline.

[0040] The specific structure is shown in Figure 1 、 Figure 2 .

[0041] The utility model uses, aiming at the immovable obstacle, through the structure of the application, can the water of one side of the obstacle, through the siphon effect to the other end of the obstacle, through the specific mechanism design of the application, can reduce the impact of water flow to the inside of the facility, prolong the service life, ensure the safety.

[0042] Although the methods are illustrated and described above as a series of structures for simplicity in explanation, it is to be understood and appreciated that the methods are not limited by the illustrated order of the structures, as some structures can occur in different orders and / or concurrently with each other, and / or with other structures from the methods not specifically shown and described herein but which are nonetheless within the scope of the methods.

[0043] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for facilitating the maintenance of the inverted siphon section of a gravity flow pipeline, characterized in that, This includes inspection wells, inlet pipes, outlet pipes, and inverted siphons; There are two inspection wells, namely an upstream inspection well and a downstream inspection well; the upstream inspection well and the downstream inspection well are respectively located on both sides of the underground obstacle. One end of the water inlet pipe is installed on the upstream inspection well, and the other end is connected to the upstream water source to guide the water flow into the upstream inspection well; One end of the water outlet pipe is installed on the downstream inspection well, and the other end is connected to the downstream drainage pipe to guide water flow out of the downstream inspection well. Each of the two inspection wells has an isolation chamber on one side facing each other, namely, an upstream and downstream isolation chamber. The inspection well chamber and the isolation chamber are separated by a partition wall. The depth of the isolation chamber is greater than the depth of the inspection well chamber. A drain outlet is provided on the partition wall at the bottom of the inspection well chamber, which can connect the inspection well chamber and the isolation chamber. A gate is provided on the drain outlet. The two ends of the inverted siphon are respectively connected to the bottom of the upstream and downstream isolation chambers, that is, connecting the upstream and downstream inspection wells, serving as a channel for water to pass through obstacles; On the upstream inspection well side, the bottom of the isolation chamber is provided with a pebble buffer layer, which can guide the water flow in the upstream inspection well to flow into the isolation chamber through the drain outlet, and then into the downstream isolation chamber through the inverted siphon. Both the inspection well and the top of the isolation chamber are equipped with a covered access port for personnel to enter. The side walls of the inspection well and the isolation chamber corresponding to the access port are equipped with ladders extending to the bottom.

2. The device for facilitating maintenance of the inverted siphon section of a gravity flow pipeline according to claim 1, characterized in that, The sidewalls of the connecting inlet and outlet pipes of the upstream and downstream inspection wells are semi-circular arc-shaped. The semi-circular arc shape can provide multiple inlet and outlet pipe connections to meet the needs of multiple inlet and outlet pipes in multiple directions.

3. The device for facilitating maintenance of the inverted siphon section of a gravity flow pipeline according to claim 1 or 2, characterized in that, The downstream inspection well and the downstream isolation chamber are smaller in size than the upstream inspection well and the upstream isolation chamber. The downstream inspection well is buried underground, and there is an independent passage for personnel to go down between the downstream inspection well and the downstream isolation chamber and the ground. The passage is also equipped with ladders that can connect to the ladders in the downstream inspection well and the downstream isolation chamber respectively.

4. The device for facilitating maintenance of the inverted siphon section of a gravity flow pipeline according to claim 3, characterized in that, The isolation chamber is divided into two independent chambers by a partition. Each chamber is equipped with a drain outlet with a gate and is connected to the inspection well. The inverted siphon adopts a double-pipe arrangement, which is connected to the corresponding isolation chambers at the upstream and downstream positions.

5. The device for facilitating maintenance of the inverted siphon section of a gravity flow pipeline according to claim 4, characterized in that, Both the upstream and downstream inspection wells are equipped with flow channels at their bottoms. The inner cross-section of the flow channel is semi-circular, which can match the lower semi-circle of the circular inlet and outlet pipes, respectively.

Images