JP5042734B2 - Water control body installation device - Google Patents

Description

  The present invention surrounds the outer peripheral surface of a fluid pipe with a housing having at least a divided structure, and connects a pipe cutting means to an opening formed in the housing, and the fluid pipe inside the housing is connected by the pipe cutting means. The present invention relates to a water control body installation device that installs a water control body having at least a rotation shaft and a valve body that rotates around the rotation shaft, in a case where the water control body is cut in an indefinite water state.

  A conventional water control body installation device connects a pipe cutting means to an opening provided in an upper surface portion of a casing surrounding an outer peripheral surface of a fluid pipe, cuts the fluid pipe in the casing, and rotates through the opening. A water control body that rotates around the dynamic axis is installed in the housing (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 6-17986 (page 3, FIG. 1)

  However, in Patent Document 1, the water control body is installed in the casing in a state where the end of the rotation shaft projects from the opening provided in the upper surface of the casing. It is necessary to configure the branch path excluding the upward direction, and the direction in which the pipeline is configured is limited.

  The present invention has been made paying attention to such a problem, and provides a water control body installation device that improves the degree of freedom in the direction in which pipes are arranged by a water control body installed in a casing surrounding a fluid pipe. For the purpose.

In order to solve the above-described problem, a water control body installation device according to claim 1 of the present invention provides:
The outer peripheral surface of the fluid pipe is surrounded by a casing having at least a divided structure, and a pipe cutting means is connected to an opening formed in the casing. A water control body installation device that installs a water control body having at least a rotation shaft and a valve body that rotates about the rotation shaft inside the housing;
The water control body includes the valve body and a valve housing in which a rotation shaft of the valve body is installed. The rotation shaft of the valve body is disposed in a substantially horizontal direction, and is substantially horizontal to the housing. An insertion hole that opens in the direction is formed, and the operation shaft and the rotation shaft are engaged with the operation shaft that can be inserted through the insertion hole and the rotation shaft of the valve body around the shaft. A pair of engaging portions are provided, and the valve body is rotated via the rotation shaft by rotating the operation shaft, and is placed on the upper surface of the valve housing with respect to the inner surface of the housing. It characterized that you prevent fluid in the fluid tube leaks by abut provided with a sealing member and said valve housing sealing material the provided on the side of a position sandwiching the rotation axis of the sealing by It is said.
According to this feature, the valve body of the water control body installed in the casing rotates around the rotation shaft arranged in the substantially horizontal direction, so that the conduit of the fluid pipe passes through the water control body. Can be branched and opened in a substantially horizontal direction and an upward direction in which there is no rotation shaft, so that the degree of freedom in the direction in which the pipes are arranged is improved. And after installing the water control body inside the housing, the operation shaft can be inserted from the outside of the housing through the insertion hole separate from the opening formed in the housing, and the valve body can be operated by the operation shaft Therefore, it is possible to easily install the control shaft inside the housing without attaching an operation shaft extending in the axial direction to the water control body in advance, and the operation shaft can be extended to the outer side of the housing. This makes it easier to rotate the rotation axis. Further, even if an insertion hole is formed in the housing, a sealing material provided at the upper portion of the valve housing with respect to the inner surface of the housing and a sealing material provided on a side portion of the valve housing at a position sandwiching the rotation shaft. By making it abut and watertight, it is possible to prevent the fluid in the fluid pipe from the opening formed in the valve casing from leaking out of the casing.

The water control body installation device according to claim 2 of the present invention is the water control body installation device according to claim 1,
The casing is provided with a driving force applying unit having a driving unit for applying a driving force to the rotating shaft, and the driving force applying unit has a trigger unit for starting the driving unit in a specific state of the fluid pipe. It is characterized by that.
According to this feature, for example, when an unexpected external force such as an earthquake is applied to the fluid pipe as a specific state of the fluid pipe, the driving part of the driving force applying means is started by the trigger part, and the driving force to the rotating shaft As a result, the rotation shaft is rotated in a predetermined manner in accordance with a specific state of the fluid pipe such as an earthquake, and the valve element can be operated urgently.

The water control body installation device according to claim 3 of the present invention is the water control body installation device according to claim 2 ,
The driving unit of the driving force applying means is a load body that is provided above the rotating shaft and that applies a driving force to the rotating shaft by dropping by gravity in a specific state of the fluid pipe. .
According to this feature, a load body as a drive unit of the drive force applying means is provided above the rotation shaft, and the drive force is directly applied to the horizontal rotation shaft by gravity dropping in a specific state of the fluid pipe. By applying, the driving energy can be applied to the rotating shaft at low cost and efficiently using the potential energy of the load body provided above the rotating shaft without using special energy.

The water control body installation device according to claim 4 of the present invention is the water control body installation device according to claim 3 ,
The driving force applying means includes a buffer portion that buffers gravity drop of the load body.
According to this feature, it is possible to prevent an impact on the rotation of the valve body due to the gravity drop of the load body having a predetermined weight by buffering the force of gravity drop of the load body by the buffer portion. In particular, when the valve body is closed, it is possible to prevent water hammer from being caused by a sudden blockage.

  Examples of the present invention will be described below.

  Example 1 of the present invention will be described with reference to the drawings. First, FIG. 1 (a) is a front view showing a casing of a water control body installation device in an example of the present invention, and (b) is (a). FIG. FIG. 2 is a schematic view showing a situation in which the tube cutting means is connected to the opening of the housing. FIG. 3 is a schematic view showing a situation where the water control body pressing means is connected to the opening of the housing. FIG. 4 is a perspective view of the water control body. Fig.5 (a) is a partial cross section figure of a water control body, (b) is a bottom view like (a). Fig.6 (a) is sectional drawing which shows the inside of the housing | casing which installed the water control body, (b) is a front view which shows a rotation control member. FIG. 7 is a partial cross-sectional view showing a housing to which a branch member is connected. FIG. 8A is an enlarged cross-sectional view showing a state in which a cover cylinder is connected around the rotation shaft, and FIG. 8B is an enlarged cross-sectional view showing a state in which an operation shaft is connected to the rotation shaft.

  As shown in FIGS. 1 (a) and 1 (b), an outer peripheral surface of a fluid pipe 1 that constitutes an existing pipe line and in which a fluid flows is formed by a casing 2 having a vertically divided structure that is assembled in a watertight manner. Go. The housing 2 is provided with sleeves 2a and 2a that extend in the axial direction along the outer peripheral surface of the fluid pipe 1, and an opening 2b that has a flange 2c as a connecting portion and opens upward. It consists mainly of a hollow cylindrical member. In addition, insertion holes 2d and 2e that are opened to face each other in the front-rear direction are provided at positions substantially orthogonal to the tube axis on the peripheral side wall of the housing 2, and the fluid tube 1 that will be described later is cut and the control of this embodiment is controlled. When installing the water control valve 11 as a water body, these insertion holes 2d and 2e are respectively closed by the water stop plates 28 and 29 (see FIG. 6A). Further, drainage ports 2f and 2f are provided at predetermined positions near the sleeves 2a and 2a on the bottom plate of the housing 2, respectively.

  Further, an annular sealing material 4 is disposed along the circumferential direction between the inner peripheral surface of the casing 2 and the outer peripheral surface of the fluid pipe 1 at the end of each sleeve 2a, 2a, and the sealing material 4 is divided. The watertightness between the housing 2 and the fluid pipe 1 is maintained by being held by the push wheel 3.

  Next, as shown in FIG. 2, the cutting of the fluid pipe 1 will be described. The opening 2b of the housing 2 can be opened and closed, and the water tightness inside the housing 2 is maintained in the closed state. Connect the possible on-off valve 5. Subsequently, a perforation blade 7a having an inner diameter and a height larger than the outer diameter of the fluid pipe 1 and disposed downward on the periphery of the lower end, and having the same central axis as the perforation blade 7a than the perforation blade 7a An inner hollow cylindrical drilling cutter 7 as a pipe cutting means having a center drill 7b disposed downward at a lower position and a hooking piece 7c provided at the front of the center drill 7b is provided inside the body 6. The body 6 is opened and closed so as to be disposed in a space so as to be disposed at a position where the central axis of the piercing cutter 7 is oriented substantially in the vertical direction and intersects the central axis of the fluid pipe 1 in the housing 2 substantially perpendicularly. 5 is connected in a watertight manner above 5.

  Next, the perforating cutter 7 is moved by the stroke mechanism 8 in which the perforating blade 7a moves forward and backward so as to pass through the entire cross section of the fluid pipe 1 while the on-off valve 5 is opened and the perforating cutter 7 is rotated. Move down. By rotating and lowering the piercing cutter 7, the fluid pipe 1 is gradually cut downward from the outer peripheral surface of the upper surface of the fluid pipe 1 at two cut surfaces between the diametrical dimensions of the piercing cutter 7. At a point where 7a is lowered so as to pass through the entire cross section of the fluid pipe 1, the fluid pipe 1 is cut at two cut surfaces, and the pipe piece 1a is connected to the pipe of the fluid pipe 1 between the two cut surfaces. Divided from.

  In the above-described cutting operation of the fluid pipe 1, the fluid pipe 1 is in an indefinite water state. Therefore, the fluid is in the fluid pipe 1. In the cutting operation by the drilling cutter 7, the center drill 7 b is fluid. When the fluid pipe 1 reaches the inside of the fluid pipe 1 from the outer peripheral surface of the top surface of the pipe 1, the fluid inside the fluid pipe 1 leaks out of the pipe and fills the inside of the body 6 that is connected to the inside of the housing 2 and above. Become. However, the fluid leaking from the inside of the fluid pipe 1 does not leak to the outside of the housing 2. Therefore, the cutting operation can be performed while the fluid in the fluid pipe 1 remains in an undisrupted water state. Further, by opening the drain outlets 2f, 2f to the outside of the housing 2, the cutting operation is performed while discharging chips generated when the fluid pipe 1 is cut out to the outside of the housing 2.

  Next, after the cutting operation of the fluid pipe 1, the perforating cutter 7 disposed inside the body 6 and the cut pipe piece 1 a hooked on the hook piece 7 c of the center drill 7 b are placed above the on-off valve 5. Then, the on-off valve 5 is closed, and these are removed from the on-off valve 5 together with the body 6.

  Subsequently, as shown in FIG. 3, the installation of the water control valve 11 will be described. The body 9 having the water control valve 11 disposed therein and connected to the insertion machine 10 is connected to the on-off valve 5 in a watertight manner. After that, the on-off valve 5 is opened, and the water control valve 11 is pressed downward from above by the insertion machine 10 to be installed at a predetermined position inside the housing 2.

  Thus, since the opening 2b is opened upward, the perforation cutter 7 or the water control valve 11 as the pipe cutting means is passed through the opening 2b opened upward. 2 Can be approached easily by lowering down toward the inside.

  As shown in FIGS. 4 and 5, the water control valve 11 will be described. The water control valve 11 includes a branch hole 12a that opens upward, and a valve housing that includes a second hole 12b that opens laterally. 12 and a valve body 13 that can open and close the branch hole 12a and the second hole 12b by rotating around the rotation shaft 13b. The branch hole 12 a constitutes a branch path branched from the fluid pipe 1, and the second hole 12 b constitutes a flow path of the fluid pipe 1. Specifically, the branch hole 12a and the second hole 12b have a circular shape with the same diameter that opens at a relative position of approximately 90 degrees, and are circular with the same diameter as the holes 12a and 12b. The valve body 13 to which the sealing material 14 is attached rotates the operation shaft 21 (see FIG. 6), which will be described later, so that the valve body 12 has a range of approximately 90 degrees through the rotation shaft 13b. The two holes 12a and 12b rotate freely, and the sealing material 14 contacts the peripheral edge of the branch hole 12a or the peripheral edge of the second hole 12b, so that both the holes 12a and 12b are closed in a watertight manner. . Further, the opposite side of the valve housing 12 to the second hole 12b is open in communication with both holes 12a and 12b. Furthermore, a shaft end portion of the rotation shaft 13 b of the valve body 13 is projected from the side portion of the valve housing 12.

  In addition, a disc 12c having an outer peripheral surface having substantially the same diameter as the inner peripheral surface of the opening 2b of the housing 2 and an inner peripheral surface having substantially the same diameter as the branch hole 12a is disposed on the upper portion of the valve housing 12. The sealing material 15 is fitted in a concave groove formed along the outer peripheral surface of the disk 12c. Further, ribs 12d and 12d are formed from the side to the bottom of the valve housing 12 so as to sandwich the pivot shaft of the valve body 13 from the left and right, and are formed along the side peripheral surfaces of the ribs 12d and 12d. The sealing materials 16 and 16 are continuously fitted to the sealing material 15 in the concave grooves. Further, two legs 17 extending downward are provided on the bottom surface of the valve housing 12 so as to project.

  In the water control valve 11, the branch hole 12a is positioned on the opening 2b side of the housing 2 in a state where the valve body 13 is rotated to the position where the branch hole 12a is closed, that is, the position where the second hole 12b is opened. In addition, the second hole 12b is located on the downstream side of the fluid pipe 1 so that the second hole 12b is located in the casing 2 in an undisturbed state. Thus, since the water control valve 11 has the 2nd hole 12b which comprises the flow path of the fluid pipe | tube 1, the water control valve 11 can be installed in a non-continuous water state.

  Concave portions 2g and 2g are provided at two predetermined locations on the inner bottom surface of the housing 2 (see FIGS. 1B and 7), and a guide (illustrated) provided on the inner peripheral surface of the housing 2 in the vertical direction. The water control valve 11 is guided along the abbreviation), and the leg portions 17 and 17 of the valve housing 12 are fitted into the recesses 2g and 2g. While positioning, the movement of the valve housing | casing 12 installed in the housing | casing 2 predetermined is controlled.

  Further, as shown in FIG. 6A, after the water control valve 11 is installed, bolts 25 are screwed into the housing 2 into the plurality of female screw portions 2 h formed on the upper outer peripheral surface of the housing 2. By making the peripheral surface of the bolt 25 abut the upper surface of the disc 12c of the water control valve 11, the installation position of the water control valve 11 inside the housing 2 is maintained, and movement due to fluid pressure is prevented.

  At the position where the water control valve 11 is installed inside the housing 2, the rotation shaft 13 b is disposed in a substantially horizontal direction substantially orthogonal to the tube axis of the fluid tube 1. Further, since the sealing materials 15 and 16 provided on the outer surface of the valve housing 12 are in watertight contact with the inner surface of the housing 2 and the both sides of the sealing materials 15 and 16 are separated from each other. On the outer side, the branch hole 12a side, the second hole 12b, and the rotating shaft 13b side are watertight by the sealing material 15, and similarly, the second hole 12b side and the rotating shaft 13b side are watertight by the sealing material 16. It becomes.

  After installing the water control valve 11, the on-off valve 5 and the insertion machine 10 connected to the flange 2 c of the opening 2 b of the housing 2 are removed from the housing 2. Thus, in the state which the valve body 13 rotated to the position which closed the branch hole 12a, this branch hole 12a is located in the opening part 2b side, and the water control valve 11 is installed in the housing | casing 2 inside. Therefore, the on-off valve 5 connected to the opening 2b can be removed without leaking water from the opening 2b to the outside of the housing 2. Moreover, since the 2nd hole 12b is open | released, even when installing the water control valve 11 in a non-continuous water state, the distribution | circulation of the fluid in the fluid pipe | tube 1 is not interrupted | blocked.

  As shown in FIG. 6A, in a state where the valve body 13 is rotated to the position where the branch hole 12a is closed, the rotation that restricts the rotation of the valve body 13 shown in FIG. A rotation restricting member 19 as a movement restricting means is detachably provided on the water control valve 11. More specifically, a substantially coaxial driven shaft 13c is provided opposite to the other end side of the rotation shaft 13b of the water control valve 11, and the rotation restricting member 19 is drilled substantially in the center when viewed from the front. The rectangular perforations 19a are engaged with the end portions 13e of the driven shaft 13c formed in a slightly smaller rectangular shape than the perforations 19a, and bolt holes 19b and 19b formed on the left and right sides when viewed from the front. Bolts 30 and 30 are connected to bolt holes formed in the bearing portion of the driven shaft 13c, and the rotational movement of the valve body 13 is restricted via the driven shaft 13c.

  In this way, when the water control valve 11 is installed in the housing 2, the valve body 13 is brought into contact with the inside of the housing 2 due to the water control valve 11 or due to fluid pressure generated in the fluid pipe. It is possible to prevent unexpected rotation from the position where the branch hole 12a is closed.

  In addition, after the water control valve 11 is installed inside the housing 2, the water blocking plate 29 that has closed the insertion hole 2e of the housing 2 that opens toward the driven shaft 13c is removed to open the insertion hole 2e. Then, by removing the rotation restricting member 19 through the insertion hole 2e, the valve body 13 can be freely rotated. In addition, you may attach the rotation control member 19 to the water control valve 11 through the insertion hole 2e as needed.

  Next, as shown in FIG. 7, the branch member 18 constituting the branch path is connected to the flange 2 c of the opening 2 b of the housing 2. Specifically, the branch member 18 has an end connected to the opening 2b that opens upward, extends upward, continuously bends approximately 90 degrees, and extends substantially horizontally. Thus, a substantially parallel branch path can be formed above the fluid pipe 1.

  In this way, the valve body 13 of the water control valve 11 installed in the housing 2 rotates around the rotation shaft 13b arranged in a substantially horizontal direction, so that the water control valve 11 is interposed through the water control valve 11. In addition, since the conduit of the fluid pipe 1 can be branched and opened in a substantially horizontal direction and in the upward direction where the rotating shaft 13b does not exist, the degree of freedom in the direction in which the conduit is disposed is improved.

  Further, as described above, the branch path branched from the fluid pipe 1 can be formed through the opening 2b used for connecting the pipe cutting means and installing the water control valve 11, so that the fluid pipe 1 It is not necessary to form a separate opening for forming a branch path in the housing 2 that surrounds the housing 2, and it is easy to process the housing 2, and the strength of the housing 2 can be maintained. Moreover, the branch member 18 can be connected using the flange 2c provided in the opening 2b.

  Further, since the opening 2b is opened upward, for example, even when there is no space due to other members present on the left and right sides of the fluid pipe 1, the opening opened upward. The branch member 18 can be connected to 2b.

  A bypass pipe 23 having a smaller diameter than the branching member 18 communicating the fluid pipe 1 and the branching member 18 is provided separately using the drain port 2f, and an open / close valve (not shown) interposed in the pipe line of the bypass pipe 23. ), The amount of branch water to the branch path can be controlled even when the branch hole 12a is closed.

  Next, as shown in FIGS. 8A and 8B, the connection of the operation shaft 21 of the water control valve 11 will be described. First, the water stop plate 28 (which closed the insertion hole 2 d of the housing 2). 6a) is removed and the insertion hole 2d is opened. As described above, at the installation position of the water control valve 11 in which the leg portion 17 of the valve housing 12 is fitted and positioned in the recess 2g in the housing 2, the insertion hole 2d and the rotation shaft of the water control valve 11 are located. 13b is positioned substantially coaxially, and as described above, the sealing material 15 and 16 for partitioning the branch hole 12a and the second hole 12b and the insertion hole 2d in a watertight manner are interposed. Even if the plate is removed and the inside of the housing 2 is opened, the fluid in the fluid pipe 1 can be prevented from leaking from the branch hole 12a or the second hole 12b through the insertion hole 2d.

  As shown in FIG. 8A, an inner diameter larger than the rotation diameter of the rotation shaft 13b and the operation shaft 21 to be described later is formed from the outside of the case 2 to the inside of the case 2 through the insertion hole 2d. The cover tube 26 is inserted in the axial direction, the rotation shaft 13b is covered in the circumferential direction, and the tip of the cover tube 26 and the bearing portion of the rotation shaft 13b are connected by a bolt 31. An engagement key 26a protrudes in the axial direction on the front end surface of the cover cylinder 26, and the engagement cylinder 26a is engaged with a recess formed on the opposing surface of the bearing portion, so that the cover cylinder 26 The circumferential position of the bolt 31 is adjusted to a predetermined value, and the bolt 31 can be easily screwed.

  Next, as illustrated in FIG. 8B, the end of the operation shaft 21 configured in the shaft unit 20 is inserted from the outside of the housing 2 toward the inside of the housing 2 through the insertion hole 2 d. The operation shaft 21 is a shaft body similar to the rotation shaft 13b, and the distal end portion of the operation shaft 21 has an inner peripheral surface substantially the same diameter as the outer diameter of the rotation shaft 13b, and the outer periphery of the rotation shaft 13b. It is formed in the cylindrical part 21a which can be fitted to the surface. Further, a concave groove 21b as an engaging portion is formed along the axial direction on the inner peripheral surface of the cylindrical portion 21a, and an engagement that can be fitted in the concave groove 21b on the outer peripheral surface of the rotating shaft 13b. A protruding line 13d as a joint is formed, that is, the groove 21b and the protruding line 13d constitute a pair of engaging parts.

  The operating shaft 21 is inserted through the inside of the cover cylinder 26 in the axial direction, the inner peripheral surface of the cylindrical portion 21a is fitted to the outer peripheral surface of the rotating shaft 13b, and the concave groove 21b formed in the cylindrical portion 21a. Engages with the ridge 13d formed on the rotating shaft 13b. In this way, by engaging the concave groove 21b of the operation shaft 21 with the convex strip 13d of the rotation shaft 13b, the operation shaft 21 and the rotation shaft 13b can be rotated synchronously around the axis. Become.

  Then, the bearing portion 27 of the operation shaft 21 configured in the shaft unit 20 and the rear end portion of the cover cylinder 26 are connected by a bolt 32, and the flange 22 of the shaft unit 20 and the flange of the insertion hole 2d are connected by bolts and nuts. Connect at 33. An engagement key 27a is projected in the axial direction on the bearing portion 27 of the shaft unit 20, and the engagement key 27a is engaged with a recess formed in the rear end surface of the cover tube 26, so that the shaft The circumferential position of the unit 20 is adjusted to a predetermined value, and the bolt 32 and the bolt / nut 33 can be easily screwed.

  Thus, after installing the water control valve 11 inside the housing 2, the operation shaft 21 can be inserted from the outside of the housing 2 through the insertion hole 2 d different from the opening 2 b formed in the housing 2. Therefore, it is possible not only to install the operation shaft 21 extending in the axial direction in advance in the water control valve 11 but also to easily install the operation shaft 21 to the outside of the housing 2. The rotating shaft 13b can be easily rotated via the concave groove 21b as the pair of engaging portions and the protruding line 13d.

  Further, the valve body 13 can be rotated only by inserting the operating shaft 21 from the outside of the housing 2 and engaging the concave grooves 21b and the convex strips 13d as a pair of engaging portions. Since the concave grooves 21b and the ridges 13d as the portions are provided on the inner peripheral surface of the operation shaft 21 and the outer peripheral surface of the rotating shaft 13b formed so as to be fitted to each other, the shafts 21 and 13b are By fitting, the groove 21b and the ridge 13d can be protected.

  Further, the pair of engaging portions can be fitted into the concave groove 21b formed along the axial direction on the inner peripheral surface of the cylindrical portion 21a of the operation shaft 21 and the concave groove 21b on the outer peripheral surface of the rotating shaft 13b. In addition to being able to simply configure the pair of engaging portions by the concave grooves 21b and the convex stripes 13d, the concave and convex engagement between the concave grooves 21b and the convex stripes 13d Both shafts 21 and 13b can be reliably engaged.

  In addition, since both the shafts 21 and 13b are covered along the axial direction by the cover cylinder 26 having an inner diameter larger than the rotation diameter of both the shafts 21 and 13b, the engaging portions of the both shafts 21 and 13b are engaged. Alternatively, it is possible to solve problems such as foreign matter mixed around the shaft.

  In addition to the insertion hole 2d used for the insertion of the operation shaft 21, an insertion hole 2e that opens toward the other end side of the rotation shaft 13b, that is, the driven shaft 13c, is formed in the housing 2. By attaching and detaching the rotation restricting member 19 described above through the insertion hole 2e, it is possible to eliminate the problem that the attachment and detachment of the rotation restricting member 19 interferes with the insertion of the operation shaft 21.

  Next, as shown in FIG. 7, the speed reducer 24 is connected to the rear end portion of the operation shaft 21. By directly rotating the rotation operation shaft 24a provided in the speed reducer 24 and extending vertically, the rotation shaft 13b is rotated through the operation shaft 21, and the valve body 13 is arbitrarily rotated. Can do. Note that the operating shaft 21 connected to the rotating shaft 13b may be directly rotated without attaching a speed reducer as in this embodiment.

  As described above, the water control valve 11 includes the valve housing 12 having the branch hole 12a and the valve body 13 provided in the valve housing 12 so as to be able to open and close the branch hole 12a, and is located on the opening 2b side. By opening and closing the branch hole 12a that is opened by the valve body 13, the flow of the fluid to the branch path can be controlled.

  The valve housing 12 further includes a second hole 12b positioned on the cut portion side of the fluid pipe 1, and the valve body 13 is further provided to be able to open and close the second hole 12b. By opening and closing the second hole 12b located on the cut portion side of the pipe 1 by the valve body 13, the flow of the fluid in the fluid pipe 1 can be further controlled.

  Next, Example 2 of the present invention will be described with reference to the drawings. FIG. 9A is a side view showing a situation in which the water control body installation device in Example 2 of the present invention is assembled, and FIG. It is a side view which shows the condition after an assembly | attachment like (a). FIG. 10 is a front view of the housing showing a rotation state of the load body. In addition, about the structure similar to Example 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIGS. 9 (a) and 9 (b), in the same manner as in the above-described first embodiment, after the part of the fluid pipe 1 inside the casing 40 surrounding the fluid pipe 1 is excised, this embodiment is used. An emergency shutoff valve 42 is installed as a water control body. The shut-off valve 42 is disposed in an open state in which a valve body 43 that rotates around a horizontal rotation shaft 43b in the drawing and can open and close a pipe line in the housing 40 is oriented in a substantially horizontal direction. The fluid can be circulated through the inside. In addition, the opening part 2b formed in the upper surface part of the housing | casing 40 is water-tightly obstruct | occluded by the cover body 41, and the opening for comprising a branch path is not provided in the other lower surface part etc. especially.

  As shown in FIG. 9 (a), the operating shaft 21 that engages with the rotation shaft 43b around the axis is inserted into the insertion hole 2d on the left side of the housing 40 in the drawing as in the above, and the driving force applying means. 34 is assembled to the housing 40 so that the shaft portion 37 is fitted to the end portion of the operation shaft 21. Similarly, the operation shaft 21 that engages with the rotation shaft 43 b is inserted into the insertion hole 2 e on the right side of the housing 40 in the figure, and the shut-off valve manual means 35 is fitted to the end of the operation shaft 21. Assembled to the housing 40.

  As shown in FIG. 9B and FIG. 10, the driving force applying means 34 includes members such as a load body 38 as a driving unit, a buffer unit 39, and a solenoid 49 as a trigger unit, which will be described later, on the substrate 36. It is assembled and configured.

  More specifically, one end of the rotating arm 44 is attached to the shaft portion 37 fitted to the operation shaft 21, and a load having a predetermined weight as a driving portion of the driving force applying means 34 is attached to the other end of the rotating arm 44. A body 38 is provided. The rotating arm 44 extends obliquely upward from one end to the other end, and the load body 38 is locked as described later at a predetermined position located above the rotating shaft 43b.

  Further, a buffer portion 39 comprising a piston 39b and a cylinder 39a and buffering the gravity drop of the load body 38 is pivotally supported by a turning portion 39c provided on the substrate 36, and the tip end portion of the piston 39b. 39 d is pivotally supported at an appropriate position in the substantially middle portion of the rotating arm 44.

  One end of a rotating piece 45 disposed in a substantially horizontal direction is attached to the shaft portion 37 of the driving force applying means 34, and one end of the interlocking piece 46 is pivoted to the other end of the rotating piece 45. It is supported. Similarly, a plurality of interlocking pieces 46 are sequentially connected by pivoting adjacent end portions, and a fan-shaped locking piece 47 having a central angle of about 90 degrees is connected to the interlocking piece 46 on the end side. It is pivotally supported. Under the condition indicated by the solid line, the load body 38 is biased in the direction of rotating the rotation shaft 43b via the rotation arm 44 and the shaft portion 37 due to its weight. The locking piece 47 is urged in the direction to rotate in the left direction in the figure via the moving piece 45 and the plurality of interlocking pieces 46, but as shown in the enlarged view of the dotted line encircled portion in FIG. One end 48a is pivotally supported by the substrate 36 and the other end 48b of the holding lever 48 extending substantially horizontally is locked to the notch 47a formed at the arc end of the piece 47. By doing so, the load body 38 is restrained at the illustrated position above the rotation shaft 43b via the interlocking piece 46, the rotation piece 45 and the rotation arm 44, that is, the valve body of the shutoff valve 42. 43 is maintained in an open state.

  A solenoid 49 is connected to the signal line 50 above the locking piece 47, and is fixed to the substrate 36 as a trigger part for starting the load body 38 in a specific state of the fluid pipe 1 to be described later. The front end portion of the solenoid bar 49 a extending downward from the main body is connected to the other end portion 48 b of the holding lever 48 that is locked to the notch portion 47 a of the locking piece 47.

  Next, the rotation operation of the shutoff valve 42 will be described. For example, an electrical signal from an earthquake sensing device (not shown) provided on the other end of the signal line 50 in a specific state of the fluid pipe 1 such as an emergency such as an earthquake. Is sent to the solenoid 49, the solenoid bar 49a moves toward the upper solenoid 49 body as shown by the dotted line in FIG. Along with this movement, the holding lever 48 pivots upward around the one end portion 48 a, the other end portion 48 b disengages from the notch portion 47 a of the locking piece 47, and the load body 38 moves downward around the shaft portion 37. Since the restraint to move is released and gravity falls, the rotary body 43b rotates about 90 degrees through the rotation arm 44 and the shaft portion 37 together with the gravity drop of the load body 38, that is, the housing 40. The valve body 43 of the shut-off valve 42 is closed.

  As described above, the load body 38 as the driving portion of the driving force applying means 34 is provided above the rotation shaft 43b, and is dropped onto the rotation shaft 43b in the horizontal direction by gravity dropping in a specific state of the fluid pipe 1. By applying the driving force, the potential energy of the load body 38 provided above the rotating shaft 43b is used without using special energy, and the driving force is applied to the rotating shaft 43b efficiently and inexpensively. be able to.

  Further, for example, when an unexpected external force such as an earthquake acts on the fluid pipe 1 as a specific state of the fluid pipe 1, the load body 38 of the driving force applying means 34 is started by the solenoid 49, and the rotating shaft 43b. By starting application of the driving force to the valve body 43, the valve shaft 43 can be operated urgently by rotating the rotation shaft 43b according to a specific state of the fluid pipe 1 such as an earthquake.

  At this time, it is possible to prevent the rotation of the valve body 43 from being impacted by the gravity drop of the load body 38 having a predetermined weight by buffering the gravity drop momentum of the load body 38 by the buffer portion 39. In particular, when the valve body 43 is closed, it is possible to prevent water hammer from being caused by a sudden blockage.

  The specific state of the fluid pipe 1 described above is not necessarily limited to the external force that acts on the fluid pipe 1 due to the occurrence of an earthquake. For example, the flow velocity, flow rate, Alternatively, it may be a change in pressure or the like, and a flow meter or a pressure gauge may be installed as a means for detecting the specific state of the fluid pipe 1.

  As described above, when the valve body 43 of the shut-off valve 42 that has been closed in the housing 40 due to the gravity body dropping by gravity is opened again, the shut-off valve manual means 35 attached to the housing 40 is used. By manually turning the handle 35a, the valve body 43 can be arbitrarily opened via a gear (not shown) and the operation shaft 21, and the load body 38 and the locking piece 47 associated therewith are restored to their original predetermined positions. The holding lever 48 may be locked to the notch 47a of the locking piece 47 when it is rotated to the right.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, after the water control body configured with the valve body that rotates around the rotation shaft is installed in the housing, the operation shaft 21 that engages with the rotation shaft is inserted into the insertion holes 2d and 2e. Although the valve body is rotated via the operation shaft 21, for example, the rotation shaft may be directly driven without using the operation shaft 21.

  In the first embodiment, the water control valve 11 includes a valve body 13 that rotates around the rotation shaft 13b, and a valve housing that includes a branch hole 12a and a second hole 12b that are opened and closed by the valve body 13. In the second embodiment, the shutoff valve 42 is composed of a valve body 43 that rotates around the rotation shaft 43b. However, the water control body includes the rotation shaft and the rotation shaft. For example, the water control body may be a ball valve, a butterfly valve, or a sluice valve, or a valve housing having a hole or the like as long as it has at least a valve body that operates by rotating the shaft. You don't have to.

(A) is a front view which shows the housing | casing of the water control body installation apparatus in Example 1 of this invention, (b) is a top view similarly to (a). It is the schematic which shows the condition which connects a pipe cutting means to the opening part of a housing | casing. It is the schematic which shows the condition which connects a water control body press means to the opening part of a housing | casing. It is a perspective view of a water control body. (A) is a partial cross-sectional view of the water control body, and (b) is a bottom view similar to (a). (A) is sectional drawing which shows the inside of the housing | casing which installed the water control body, (b) is a front view which shows a rotation control member. It is a partial cross section figure which shows the housing | casing which connected the branch member. (A) is an expanded sectional view which shows the state which connected the cover cylinder around the rotating shaft, (b) is an expanded sectional view which shows the state which connected the operating shaft to the rotating shaft. (A) is a side view which shows the condition which attaches the water control body installation apparatus in Example 2 of this invention, (b) is a side view which shows the condition after an assembly | attachment similarly to (a). It is a front view of the housing | casing which shows the rotation condition of a load body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fluid pipe 2 Case 2b Opening 2d Insertion hole 2e Insertion hole 7 Drilling cutter (pipe cutting means)
11 Water control valve (water control body)
12 Valve housing 13 Valve body 13b Rotating shaft 18 Branching member 21 Operation shaft 34 Driving force applying means 35 Shut-off valve manual means 38 Load body 39 Buffer section 40 Housing 42 Shut-off valve (water control body)
43 Valve body 43b Rotating shaft 44 Rotating arm 47 Locking piece 48 Holding lever 49 Solenoid (trigger part)

Claims (4)

The outer peripheral surface of the fluid pipe is surrounded by a casing having at least a divided structure, and a pipe cutting means is connected to an opening formed in the casing. A water control body installation device that installs a water control body having at least a rotation shaft and a valve body that rotates about the rotation shaft inside the housing;
The water control body includes the valve body and a valve housing in which a rotation shaft of the valve body is installed. The rotation shaft of the valve body is disposed in a substantially horizontal direction, and is substantially horizontal to the housing. An insertion hole that opens in the direction is formed, and the operation shaft and the rotation shaft are engaged with the operation shaft that can be inserted through the insertion hole and the rotation shaft of the valve body around the shaft. A pair of engaging portions are provided, and the valve body is rotated via the rotation shaft by rotating the operation shaft, and is placed on the upper surface of the valve housing with respect to the inner surface of the housing. It characterized that you prevent fluid in the fluid tube leaks by abut provided with a sealing member and said valve housing sealing material the provided on the side of a position sandwiching the rotation axis of the sealing by Water control body installation device.   The casing is provided with a driving force applying unit having a driving unit for applying a driving force to the rotating shaft, and the driving force applying unit has a trigger unit for starting the driving unit in a specific state of the fluid pipe. The water control body installation device according to claim 1, wherein the water control body installation device is provided. The driving unit of the driving force applying means is a load body that is provided above the rotating shaft and applies a driving force to the rotating shaft by gravity falling in a specific state of the fluid pipe. The water control body installation device according to claim 2 . The water control body installation device according to claim 3 , wherein the driving force applying means includes a buffer section that buffers gravity drop of the load body.

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