JP3922640B2 - Indefinite water installation method for gates - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for installing a continuous water in a gate that allows the gate to be replaced without stopping the water flow.
[0002]
[Prior art]
In many cases, sewers, upper waterways, industrial waterways, and the like are provided with gates for opening and closing the waterways in order to control the flow rate of water. As an example of the gate, as shown in FIG. 6, a gate 51 constituted by a door body 52 and a door stop 53 that has an upper side portion as an opening side and has a substantially U shape and supports the door body 52 so as to be movable up and down. In general, it is attached to the outlet 54 formed on the wall surface and is installed with mortar or the like, and the door 52 is moved up and down by an unillustrated opening / closing device to open, close or control the flow rate. It is like that. In a normal state, the door 52 is always open, and water flows through the water channel in a filled state.
[0003]
When the gate 51 is aged and replaced with a new gate, the replacement work such as demolition of the mortar at the existing gate, positioning work at the new gate and curing of the mortar, etc. is large. It is necessary to stop the water and keep it dry. As a technique for stopping water around the gate, a method using corner dropping is known (for example, see Patent Document 1).
[0004]
However, according to the technique disclosed in Patent Document 1, although water can be stopped around the gate, there is a problem that water does not flow downstream during the work period. In such a case, when it is desired to replace the gate with the entire waterway system as a continuous water, conventionally, a separate bypass waterway that bypasses the gate replacement work site is conventionally formed, and the bypass waterway is used for the downstream of the water during the work period. The method of flowing to the side was taken.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-226945 (page 3, FIG. 5)
[0006]
[Problems to be solved by the invention]
However, since the method of separately forming the bypass channel is related to the construction of the civil engineering structure that forms the channel system, there is a problem that it takes a great deal of cost and the number of construction days.
[0007]
The present invention was created to solve the above-described problems, and has an object to provide a continuous water installation method for a gate that is economical with a simple configuration and enables quick gate replacement. It is said.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention replaces an existing gate attached to an outlet or an inlet in a gate chamber with a new gate. (1) The new gate and the communication pipe are carried into the gate chamber and the existing gate is installed. In a state where the gates of the gate and the new gate are opened, the step of passing through the communication pipes through the openings of both gates and connecting the sealed inlet and outlet through the communication pipes; (2) A step of draining water, (3) a step of disassembling the fixed portion of the existing gate, cutting a door stop of the existing gate so that it can be detached from the communication pipe, and removing the existing gate; The new gate is moved along the communication pipe, and the new gate is installed at the outlet or the inlet. (5) After the installation of the new gate is completed, the communication pipe is removed. Step gastric row in that order each during said from the time of communication with the process inlet and the outlet by communicating tube in the (1) until the removal of the communication pipe in the step (5), through the communicating pipe A constant water installation method was adopted for the gate where water always flows .
[0009]
In addition, when replacing the existing gate attached to the outlet or the inlet in the gate chamber with a new gate, (1) with the existing gate open, the inlet and outlet subjected to the sealing process are connected to the communication pipe. (2) draining the water in the gate chamber, (3) disassembling the fixed portion of the existing gate and cutting the existing gate door so that it can be detached from the communication pipe. A step of removing the gate, and (4) a new gate in which the part of the door is detachable with respect to the new gate, and the part of the door is removed and the door is opened. (5) A step of attaching a part of the door stop after that, (5) A step of installing a new gate at the outlet or the inlet, ) After the installation of the new gate is completed, and a without suspension of water supply installation method of the gate for performing a process of removing the communicating pipe in that order, respectively.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Two exemplary embodiments of the present invention are shown.
“First Embodiment”
1 and 2 are process explanatory views of a side cross section in the first embodiment. In FIG. 1A, a gate chamber 1 is provided, for example, in a water channel system of a sewage treatment plant. An inlet 2 is formed on the upstream side of the gate chamber 1, and an outlet 3 is formed on the downstream side. ing. FIG. 1A shows the state of the gate chamber 1 before the gate is exchanged. The door 4A of the existing gate 4 installed on the outlet 3 side is opened, and the gate chamber 1 is filled with water. It is in. The worker, for example, wears underwater clothing or the like and checks the surroundings of the existing gate 4. Reference numeral 6 denotes an opening / closing device that automatically raises and lowers the door 4 </ b> A via the rod 6 </ b> A, and is installed in the upper part of the gate chamber 1.
[0011]
1 and 2, in the present embodiment, when replacing the existing gate 4 with the new gate 5, the new gate 5 and the communication pipe 7 are carried into the gate chamber 1, and each of the existing gate 4 and the new gate 5 is replaced with each other. In a state where the doors 4A and 5A are opened, the communication pipe 7 is passed through the openings 4B and 5B of the existing gate 4 and the new gate 5, and the inlet 2 and the outlet 3 subjected to sealing treatment are communicated by the communication pipe 7. A step (hereinafter referred to as the first step), a step of draining the water inside the gate chamber 1 (hereinafter referred to as the second step), a fixed portion of the existing gate 4 is disassembled, and it can be detached from the communication pipe 7. In this way, the door gate 4C of the existing gate 4 is cut, the existing gate 4 is removed (hereinafter referred to as the third step), the new gate 5 located at the retracted position is moved along the communication pipe 7, and the outlet 3 Or inflow 2, the process of installing the new gate 5 (hereinafter referred to as the fourth process) and the process of removing the communication pipe 7 (hereinafter referred to as the fifth process) after the installation of the new gate 5 is completed, respectively. Is the main feature.
[0012]
"First step"
First, when the inflow port 2 and the outflow port 3 are communicated with each other through the communication pipe 7 (FIG. 1C, etc.), a gap is formed between the communication pipe 7, the inflow port 2 and the outflow port 3. Then, a sealing process is performed to close the gap. In FIG. 1B, reference numerals 8 and 9 denote temporary jigs attached to the inlet 2 and the outlet 3 to connect the communication pipe 7, respectively. The temporary jig 8 has a shape having an annular first flange portion 8B and second flange portion 8C on the outer periphery of a short cylindrical body portion 8A. The temporary jig 8 is inserted into the inflow port 2 so that the first flange portion 8B and the second flange portion 8C are located in the gate chamber 1, and at that time, the trunk portion 8A An annular seal member 10 is attached to seal an annular gap space formed between the outer periphery and the inner wall portion of the inflow port 2.
[0013]
In addition, in order to attach the temporary jig | tool 8 firmly, the figure shows the case where two or more support rods 12 are applied to the 2nd flange part 8C. The support rod 12 includes a turnbuckle 12A so that it can be expanded and contracted. One end is applied to the inner wall of the gate chamber 1 where the outlet 3 is formed, and the other end is the second flange portion 8C as described above. It is assigned to.
[0014]
Next, the temporary jig 9 is configured to include an annular fitting portion 9A for fitting the communication pipe 7 therein, and a seal member storage portion 9B formed in an annular shape on the outer periphery of the fitting portion 9A. The annular gap member formed between the temporary jig 9 and the inner wall portion of the outflow port 3 is sealed by attaching the annular seal member 11 to the seal member storage portion 9B.
[0015]
As the sealing members 10 and 11, for example, airbags can be applied. In this case, the sealing members 10 and 11 are inflated and deployed by supplying air after being installed at predetermined portions of the inlet 2 and outlet 3, respectively. Let Thus, a quick sealing process can be performed by adopting an airbag system. Of course, a synthetic rubber material or the like can be applied as the seal members 10 and 11. In addition, the cross-sectional shape of the inflow port 2 and the outflow port 3 is not limited to a circular shape, and a sealing process can be performed by appropriately changing the shapes of the seal members 10 and 11 and the temporary jigs 8 and 9 even if they are square. .
[0016]
When the sealing process at the inflow port 2 and the outflow port 3 is completed as described above, as shown in FIGS. 1C and 1D, the communication pipe 7 and the new gate 5 are connected to the gate chamber 1 through the opening of the ceiling. Carry in. In the present embodiment, the communication pipe 7 is composed of a first short pipe 7A and a second short pipe 7B both having a cylindrical shape. The first short pipe 7A is a single flange type short pipe, and the second short pipe 7B is a double flange type short pipe.
[0017]
First, as shown in FIG.1 (c), the one end side of the 1st short tube 7A is internally fitted in the fitting part 9A of the temporary jig | tool 9 by the side of the outflow port 3. As shown in FIG. Of course, at this time, the door 4A of the existing gate 4 is open. As a result, the first short pipe 7 </ b> A is horizontally attached and fixed toward the gate chamber 1 at the outlet 3. Next, in a state in which the door 5A of the new gate 5 is opened, the first short pipe 7A moves the new gate 5 laterally so as to penetrate the opening 5B surrounded by the door stop 5C (FIG. 1D). State).
[0018]
Subsequently, the second short pipe 7B is carried into the gate chamber 1 and, as shown in FIG. 2 (e), through the flange parts (reference numerals omitted) formed at both ends thereof, the flange part ( And a bolt (not shown) for fastening and fixing to the first flange portion 8B of the temporary jig 8.
[0019]
As described above, the communication pipe 7 composed of the first short pipe 7A and the second short pipe 7B is in a state in which the opening 2B and 5B of the existing gate 4 and the new gate 5 are penetrated, and the inlet 2 subjected to the sealing process. And the outlet 3 are communicated with each other. Therefore, when the above first step is completed, the subsequent flow of water becomes inlet 2 → communication pipe 7 → outlet 3, and the gate chamber 1 contains only water that was filled during the operation of the first step. Is in a state of being accumulated as it is.
[0020]
In the above-described embodiment, first, after the sealing process is performed by the temporary jigs 8 and 9 and the seal members 10 and 11, the new gate 5 and the communication pipe 7 are carried into the gate chamber 1 and the inlet 2 and the flow path are connected. Although the case of communicating with the outlet 3 has been shown, when the inside of the gate chamber 1 is relatively wide and there is room as a work place, the temporary jigs 8 and 9, the new gate 5, the communication pipe 7, etc. are once attached. In some cases, the sealing process and the communication process using the communication pipe 7 can be performed substantially simultaneously.
[0021]
"Second step"
When the first step is completed, as shown in FIG. 2 (e), a submersible pump 13 is installed in the gate chamber 1, and the water accumulated in the gate chamber 1 is drained to the outside as described above. Thereby, in a subsequent work process, a worker can work in the gate chamber 1 in a dry state.
[0022]
"Third step"
Next, in order to secure a work place, the new gate 5 is retracted to the inlet 2 side, and the fixed portion (mortar, anchor bolt, etc.) of the existing gate 4 with respect to the inner wall of the gate chamber 1 is disassembled. And as shown in FIG.2 (f), lower part 4D of 4C of door stops is cut | disconnected by a grinder, gas fusing, etc. FIG. As a result, the existing gate 4 becomes detachable from the communication pipe 7 at the cut portion, and the existing gate 4 is lifted as it is and removed from the gate chamber 1.
[0023]
"4th process"
When the removal of the existing gate 4 is completed, the new gate 5 that has been evacuated is moved to the outlet 3 side along the communication pipe 7, and thereafter, the positioning of the new gate 5 is accurately performed at the outlet 3 by mortar, etc. Installation work is performed (state shown in FIG. 2G). Needless to say, during the period from the second step to the fourth step, water always flows through the communication pipe 7.
[0024]
"5th process"
When a predetermined curing period of mortar or the like has elapsed and the installation of the new gate 5 is completed, the communication pipe 7 is disassembled and the temporary jigs 8 and 9 together with these communication pipes 7 as shown in FIG. The seal members 10 and 11 and the support rod 12 are removed from the gate chamber 1. As a result, the water channel system returns to the original state, that is, the state of “inlet 2 → gate chamber 1 → outlet 3”.
[0025]
If it is set as the structure which performs the above 1st process-5th process in the order, respectively, without forming a bypass water channel like the past, it becomes economical by simple structure, and the state of uninterrupted water speedily As a result, the gate can be replaced. If the gate chamber 1 is small, as described in the first step, the temporary jigs 8 and 9 are first attached at the inlet 2 and outlet 3 and sealed, and then the new gate 5 and By bringing the communication pipe 7 into the gate chamber 1 and allowing the inlet 2 and the outlet 3 to communicate with each other, the work can be performed efficiently even in a narrow room.
[0026]
“Second Embodiment”
3 and 4 are side cross-sectional process explanatory views in the second embodiment. In these drawings, the same components as those described in the first embodiment are denoted by the same reference numerals. In the present embodiment, in the state where the door 4A of the existing gate 4 is opened, the inflow port 2 and the outflow port 3 subjected to the sealing process are communicated by the communication pipe 7 (hereinafter referred to as the first step), the gate chamber 1 The drainage of the existing gate 4 (hereinafter referred to as the second step), the fixed portion of the existing gate 4 is disassembled, and the door 4C of the existing gate 4 is cut so that it can be detached from the communication pipe 7. The door 5A is configured such that a part of the door 5C is detachable with respect to the new gate 5, and a part of the door 5C is removed. In the opened state, the new gate 5 is positioned so that the communication pipe 7 penetrates through the opening 5B, and then a part of the door contact 5C is attached (hereinafter referred to as the fourth step), the outlet 3 Or at the inlet 2 The process of installing the new gate 5 (hereinafter referred to as the fifth process) and the process of removing the communication pipe 7 after the installation of the new gate 5 (hereinafter referred to as the sixth process) are performed in that order. Main features.
[0027]
"First step"
Since the steps shown in FIGS. 3A and 3B are the same as those in FIGS. 1A and 1B described in the first embodiment, description thereof will be omitted. In the first embodiment, as shown in FIG. 1D, the communication pipe 7 is disposed so as to penetrate the opening 5B of the new gate 5, whereas in this embodiment, the communication pipe 7 is disposed in FIG. As shown in c) and (d), the first short pipe 7A and the second short pipe 7B are carried into the gate chamber 1 without connecting the new gate 5 and connected to each other, and a sealing process is performed. Thus, the inflow port 2 and the outflow port 3 communicated with each other.
[0028]
"Second step"
When the first step is completed, as shown in FIG. 3D, a submersible pump 13 is installed in the gate chamber 1 to drain the water accumulated in the gate chamber 1 to the outside. Thereby, in a subsequent work process, a worker can work in the gate chamber 1 in a dry state.
[0029]
"Third step"
Subsequently, the fixed part (mortar, anchor bolt, etc.) of the existing gate 4 with respect to the inner wall of the gate chamber 1 is disassembled. And as shown in FIG.4 (e), lower part 4D of 4C of door stops is cut | disconnected by a grinder, gas fusing, etc. FIG. As a result, the existing gate 4 becomes detachable from the communication pipe 7 at the cut portion, and the existing gate 4 is lifted as it is and removed from the gate chamber 1.
[0030]
"4th process"
As shown in FIG. 5, the new gate 5 used in the present embodiment is configured such that the lower part 5D of the door contact 5C is detachable. Specifically, the new gate 5 can be attached and detached by a bolt 14 and a nut 15. Done. When the new gate 5 is attached, first, the lower part 5D is removed and the door 5A is opened (the state shown in FIG. 5). As shown in f), the communication pipe 7 penetrates the opening 5B. Thereafter, the lower portion 5D is attached to the door stop 5C with the bolt 14 and the nut 15 shown in FIG.
[0031]
"5th process"
Then, the new gate 5 is moved laterally along the communication pipe 7, and the positioning work of the new gate 5 and the installation work by mortar or the like are performed at the outflow port 3 (the state shown in FIG. 4G). Needless to say, during the period from the second step to the fifth step, water is always flowing through the communication pipe 7.
[0032]
"6th process"
When a predetermined curing period such as mortar elapses and the installation of the new gate 5 is completed, as shown in FIG. 4 (h), the communication pipe 7 is disassembled, together with these communication pipes 7, temporary jigs 8, 9 and seals The members 10 and 11 and the support rod 12 are removed from the gate chamber 1. As a result, the water channel system returns to the original state, that is, the state of “inlet 2 → gate chamber 1 → outlet 3”.
[0033]
If it is set as the structure which each performs the 1st process-6th process like this embodiment in that order, it will become economical by simple structure without forming a bypass water channel like the past, and it will be water without interruption rapidly. The gate can be exchanged as a state.
[0034]
The preferred embodiments of the present invention have been described above. In the embodiment described above, the gates are all installed on the outlet 3 side, but the present invention can be applied even when installed on the inlet 2 side. In addition, the layout, shape, number, and the like of each component are not limited to those described in the drawings, and can be appropriately changed in design without departing from the spirit thereof.
[0035]
【The invention's effect】
According to the present invention, the gate can be replaced with a simple configuration and speedily in a state of uninterrupted water.
[Brief description of the drawings]
FIG. 1 is a process explanatory diagram of the first half according to a first embodiment of the present invention.
FIG. 2 is a process explanatory diagram of the latter half according to the first embodiment of the present invention.
FIG. 3 is a process explanatory diagram of the first half according to a second embodiment of the present invention.
FIG. 4 is a process explanatory diagram of the latter half according to the second embodiment of the present invention.
FIG. 5 is a front explanatory view of a new gate used in the second embodiment of the present invention.
FIG. 6 is an explanatory perspective view when the gate is installed in the gate chamber.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gate chamber 2 Inlet 3 Outlet 4 Existing gate 5 New gate 4A, 5A Door 4B, 5B Opening 4C, 5C 7 per door 7 Communication pipes 10, 11 Seal member

Claims (2)

In replacing the existing gate attached to the outlet or the inlet in the gate room with a new gate,
(1) Inlet where the new gate and the communication pipe are carried into the gate chamber and the doors of the existing gate and the new gate are opened, and the communication pipe is passed through the openings of both gates and sealed. (2) The process of draining the water in the gate chamber (3) The fixed part of the existing gate is disassembled and the door stop of the existing gate is cut so that it can be detached from the communication pipe (4) The process of removing the existing gate (4) The process of moving the new gate at the retreat position along the communication pipe and installing the new gate at the outlet or the inlet (5) After the installation of the new gate is completed, a step of removing the communicating pipe have a row in that order, respectively,
From the time of communication between the inlet and outlet through the communication pipe in the step (1) to the time of removal of the communication pipe in the step (5), water is always passed through the communication pipe. Indefinite water installation method for gates. In replacing the existing gate attached to the outlet or the inlet in the gate room with a new gate,
(1) In the state where the door of the existing gate is opened, the step of communicating the inlet and the outlet subjected to the sealing process by the communication pipe (2) The step of draining the water in the gate chamber (3) The fixing portion of the existing gate Disassembling, cutting the door stop of the existing gate so that it can be detached from the communication pipe, and removing the existing gate (4) The part of the door stop is configured to be removable with respect to the new gate,
In a state where a part of the door stop is removed and the door is opened, a new gate is positioned so that the communication pipe penetrates through the opening, and then a part of the door stop is attached ( 5) A step of installing a new gate at the outlet or the inlet (6) A method of installing a continuous water in the gate, wherein the step of removing the communication pipe is performed in that order after the installation of the new gate is completed.

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