JP2013007479A - Fluid pipe cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid pipe cutting device that facilitates handling of a cutter member in cutting a fluid pipe via an opening in a continuous flow state.SOLUTION: The fluid pipe cutting device 2 has a casing 3 attached to a fluid pipe 1 in a sealing state and having a tubular peripheral wall extended upward and an opening 7a opened to the outside of the peripheral wall, and a cutting means 4 for cutting the fluid pipe 1 in the casing 3 via the opening 7a in a continuous flow state, and allows installation of a flow control body 11 for controlling fluid flow in the casing 3 after the fluid pipe 1 is cut by the cutting means 4, wherein the opening 7a is formed in height preventing fluid from overflowing out of the opening 7a by energy of fluid formed by fluid in the fluid pipe 1 will not overflow.

Description

  The present invention relates to a casing having a cylindrical peripheral wall attached to a fluid pipe in a sealed manner and extending upward, and an opening that opens outwardly in the peripheral wall, and the fluid pipe in the casing through the opening. And a cutting means for cutting the fluid pipe in an uninterrupted flow state, and a fluid pipe cutting device capable of installing a fluid control that restricts the flow of fluid in a housing after the cutting of the fluid pipe by the cutting means.

  A conventional continuous water pipe cutting device (fluid pipe cutting device) supports a water pipe by a removal pipe support in a pipe cutting device (housing) that is watertightly attached to a water pipe (fluid pipe), and a water pipe. The upstream side and the downstream side of the removal pipe support in the pipe are cut by an endless wire (cutter member) (see, for example, Patent Document 1).

Japanese Patent No. 3306721 (page 3, FIG. 1)

  However, in the continuous water pipe cutting device (fluid pipe cutting device) described in Patent Document 1, the water pipe (fluid pipe) is cut in a sealed pipe cutting device (housing). When the cutting of the water pipe by the endless wire (cutter member) is started, it is impossible to cope with any trouble in the endless wire in the pipe cutting device. For this reason, if an opening is provided at the upper end of the tube cutting device to cope with a problem in an endless wire, the fluid released from the fluid tube into the housing by cutting the fluid tube is opened. There is a problem of overflowing from the casing to the outside.

  The present invention has been made paying attention to such problems, and provides a fluid pipe cutting device that can easily cope with a cutter member that is cutting a fluid pipe in an uninterrupted state through an opening. The purpose is to do.

In order to solve the above-described problem, a fluid pipe cutting device of the present invention includes:
A casing having a cylindrical peripheral wall attached to the fluid pipe in a sealed manner and extending upward, and an opening opening outwardly in the peripheral wall; and the fluid pipe in the casing via the opening A fluid pipe cutting device having a cutting means for cutting in an uninterrupted flow state, and capable of installing a fluid control that restricts the flow of fluid in the housing after the fluid pipe is cut by the cutting means,
The opening is formed at a height at which the fluid does not overflow from the opening due to the energy of the fluid formed by the fluid in the fluid pipe.
According to this feature, the height of the fluid formed by the fluid discharged from the fluid pipe into the housing when the cutting means cuts the fluid pipe is located below the opening formed in the peripheral wall. Since the fluid pipe can be cut in a state where the casing is opened by the opening without fluid overflowing from the opening without sealing the body, cutting means for cutting the fluid pipe through the opening When the energy of the fluid to be handled is small, the vertical dimension of the casing can be set short, so that the cutting state of the fluid pipe by the cutting means can be visually confirmed from the opening. Therefore, it is possible to easily manage the cutting state of the fluid pipe.

The fluid pipe cutting device of the present invention comprises:
An overflow fluid port for discharging the fluid out of the casing is formed below the opening in the casing and above the height generated by the energy of the fluid.
According to this feature, even if the vertical position of the fluid surface in the casing fluctuates due to the change in the fluid pressure in the fluid in the fluid pipe, the fluid is discharged from the overflow fluid outlet to the outside of the casing. Overflow is prevented, and the influence on the cutting operation of the fluid pipe can be suppressed.

The fluid pipe cutting device of the present invention comprises:
The cutting means includes a cutter unit that cuts the fluid pipe and a drive unit that drives the cutter unit, and the drive unit is disposed above the opening.
According to this feature, the fluid pipe can be cut by the cutter unit without the possibility of fluid adhering to the drive unit.

The fluid pipe cutting device of the present invention comprises:
The casing is composed of an upper casing that can be vertically separated and a lower casing in which the fluid control is disposed, and a lower end portion of the upper casing is formed with a discharge port for discharging fluid out of the casing. It is characterized by having.
According to this feature, the fluid stored above the fluid control in the housing can be discharged out of the housing through the discharge port after the fluid control is arranged in the lower housing. When removing the body from the lower casing, the amount of fluid scattered outside the casing can be suppressed.

The fluid pipe cutting device of the present invention comprises:
The casing is characterized by having a structure capable of expanding and contracting the vertical width dimension.
According to this feature, the height of the opening can be appropriately adjusted in accordance with the height of the fluid in the fluid pipe, so that the fluid pipe cutting device can be used in fluid pipes through which various fluids flow.

1 is a front sectional view showing a fluid pipe cutting device in Embodiment 1. FIG. Side sectional view showing fluid pipe cutting device It is a sectional side view which shows the state which collect | recovers a slice from the inside of a housing | casing. It is a sectional side view which shows the state by which the fluid control was arrange | positioned in the housing | casing. (A) is front sectional drawing which shows the fluid pipe cutting device in Example 2, (b) is front sectional drawing which shows the fluid pipe cutting device of the state which extended | stretched the upper housing | casing.

  The form for implementing the fluid pipe cutting device concerning the present invention is explained below based on Example 1. FIG.

  A fluid pipe cutting device according to a first embodiment will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, the fluid pipe 1 of the present embodiment is made of a resin pipe such as vinyl chloride formed in a substantially cylindrical shape, and extends in a substantially horizontal direction. Inside the fluid pipe 1 in this embodiment, clean water as a fluid flows at a maximum pressure of 0.03 MPa.

  The material of the fluid pipe 1 is not limited to vinyl chloride, but may be other metals, asbestos, polyolefin resin, or the like. In the present embodiment, the fluid in the fluid pipe 1 is clean water, but the fluid flowing in the fluid pipe 1 is not necessarily limited to clean water, and may be industrial water, sewage, or the like. For example, a fluid pipe through which a fluid flows can be used.

  In this fluid pipe 1, a fluid pipe that cuts a predetermined portion of the fluid pipe 1 in an uninterrupted state in order to install a control fluid 11 (see FIG. 4) for blocking a fluid flow path in the fluid pipe 1. A cutting device 2 is attached. As shown in FIGS. 1 and 2, the fluid pipe cutting device 2 includes a housing 3 fixedly attached to the outer peripheral surface 1 a of the fluid pipe 1, and a wire saw as a cutting means in the present invention for cutting the fluid pipe 1. It is mainly composed of the device 4 and a support base 5 that supports the fluid pipe 1 in the housing 3.

  The casing 3 is detachably attached to the lower casing 6 attached to the fluid pipe 1 so as to enclose the planned cutting position of the fluid pipe 1 and to the upper end portion of the lower casing 6 via a sealing material (not shown). The upper casing 7 is further configured. The vertical dimension from the lower end of the fluid pipe 1 to the upper end of the casing 3 in a state where the casing 3 is attached to the fluid pipe 1 flows at least within the fluid pipe 1 at a maximum pressure of 0.03 MPa. In this embodiment, the length is about 4000 mm so that the length is longer than about 3000 mm, which is a height generated by the energy of the fluid.

  Of these, the lower housing 6 is not particularly shown, but is disposed from above with respect to the fluid pipe 1, and is connected to the upper side of the outer peripheral surface 1 a of the fluid pipe 1 and the fluid pipe 1 from below. And a connecting member that covers the lower side of the outer peripheral surface 1a of the fluid pipe 1, and after connecting the two connecting members with bolts and nuts, both ends of the fluid pipe 1 in the tube axis direction It is fixed to the fluid pipe 1 by being pressed by a fixing means such as a push ring from the portion. The two connecting members may be connected by welding or the like in addition to the connection by bolts and nuts.

  A branch port 6a that opens upward is formed at a substantially central portion in the tube axis direction of the fluid pipe 1 of the lower housing 6. Further, as shown in FIG. 2, the left and right inner side surfaces of the lower housing 6 are tapered surfaces inclined from the upper side to the inner bottom of the lower housing 6 toward the center in the left-right width direction of the lower housing 6. 6b, 6b. Further, a flat surface 6c continuous with both tapered surfaces 6b, 6b is formed on the inner bottom portion of the lower housing 6.

  Furthermore, a plurality of screw insertion holes (not shown) that face in the vertical direction are formed in the inner bottom portion of the lower housing 6. Support bolts 8 that can be screwed into the lower housing 6 from below the lower housing 6 are screwed into these screw insertion holes. An annular water stop ring (not shown) is disposed between the support bolt 8 and the screw insertion hole, and fluid leakage from the lower housing 6 through the screw insertion hole is prevented. ing.

  As shown in FIGS. 1 and 2, the upper housing 7 is a cylindrical body whose lower end communicates with the branch port 6 a of the upper housing 7 in a vertically connectable manner. An opening 7a that opens upward is formed at the upper end, which is a part of the peripheral wall of the upper casing 7, and the lower end of the cylindrical casing wall 7b of the upper casing 7 is formed at the upper end. A plurality of discharge ports 7 c are formed along the circumferential direction of the upper housing 7. These discharge ports 7c are provided with opening / closing valves 7g capable of opening / closing the discharge ports 7c.

  Further, it is higher than about 3000 mm, which is a height generated by the energy of the fluid flowing in the fluid pipe 1 at the maximum pressure of 0.03 MPa from the lower end portion of the fluid pipe 1 in a state where the housing 3 is attached to the fluid pipe 1. In the housing 7b, a plurality of overflow fluid ports 7d that always open along the circumferential direction of the upper housing 7 are formed below the opening 7a and above the discharge port 7c.

  As shown in FIGS. 1 and 2, the support base 5 is disposed from the lower side in the lower housing 6 with respect to the fluid pipe 1 and covers the lower side of the outer peripheral surface 1 a of the fluid pipe 1. It is comprised from the part 5a and the 2nd stand part 5b which is arrange | positioned from upper direction with respect to the fluid pipe | tube 1, and coat | covers the upper side of the outer peripheral surface 1a of the fluid pipe | tube 1.

  Among these, the 1st base part 5a is formed in the substantially semicircular arc shape by the front view so that the lower side of the outer peripheral surface 1a of the fluid pipe | tube 1 may be followed. Further, a leg portion 5c that abuts against the inner bottom portion of the lower housing 6 while avoiding the flat surface 6c is provided at the lower portion of the first base portion 5a. The first base 5a is installed in the lower housing 6 in advance before the lower housing 6 is fixed to the fluid pipe 1. At this time, the first base portion 5a is fixed to the lower housing 6 so as not to move by screwing the support bolts 8 to the leg portions 5c.

  On the other hand, the second base part 5b is formed in a substantially semicircular arc shape in front view so as to be along the upper side of the outer peripheral surface 1a of the fluid pipe 1. Further, at both ends of the fluid pipe 1 in the pipe axis direction at the upper end of the second base part 5b, the tension of the diamond wires 4c and 4c is maintained when the fluid pipe 1 is cut by the wire saw device 4 described later. A pair of tension maintaining portions 4b having a plurality of pulleys are provided.

  Further, an annular locking ring 5d is provided between the tension maintaining portions 4b, 4b at the upper end portion of the second base portion 5b. The first base part 5a and the second base part 5b are screwed together with fixing bolts 5e that can be screwed toward the centers of the first base part 5a and the second base part 5b along the circumferential direction. ing.

  1 and 2, the wire saw device 4 includes a pair of drive units 4a and 4a provided at the upper end of the upper housing 7, the pair of tension maintaining units 4b and 4b, and a fluid It is composed of a pair of diamond wires 4c and 4c as a cutter portion in the present invention which is wound around a tube 1 and driven via each drive portion 4a and tension maintaining portion 4b. In particular, the drive units 4a and 4a in the present embodiment are installed at the upper end of the upper housing 7 so as to be spanned above the opening 7a.

  In order to attach the fluid pipe cutting device 2 configured in this manner to the fluid pipe 1, as shown in FIGS. 1 and 2, first, as described above, the lower part in which the first base part 5a is fixed inside. The housing 6 is fixed to the fluid pipe 1, and at the same time, the first base part 5 a is brought into contact with the lower side of the outer peripheral surface 1 a of the fluid pipe 1.

  Then, the second base portion 5b is brought into contact with the upper side of the outer peripheral surface 1a of the fluid pipe 1, and the first base portion 5a and the second base portion 5b are tightened with bolts and nuts (not shown). The first base part 5a and the second base part 5b may be connected by welding or the like in addition to tightening with bolts and nuts. Further, each fixing bolt 5e is screwed toward the fluid pipe 1 so that the distal end portion of each fixing bolt 5e is pressed against the outer peripheral surface 1a of the fluid pipe 1, and the fluid pipe 1 is rotated relative to the support base 5. Fix impossible.

  The mounting order of the support base 5 and the housing 3 to the fluid pipe 1 is tightened with the bolts, nuts, etc. with the first base part 5a and the second base part 5b in contact with the fluid pipe 1 in advance. Thus, the lower housing 6 may be attached to the fluid pipe 1 after the support base 5 is attached to the fluid pipe 1.

  Next, the upper casing 7 provided with the drive units 4a and 4a at the upper end is connected to the upper end of the lower casing 6, and the upper casing 7 and the lower casing 6 are communicated with each other via the branch port 6a. . Then, the diamond wires 4c and 4c are perpendicular to the tube axis of the fluid tube 1 near the both ends in the tube axis direction of the support 5 of the fluid tube 1 via the drive units 4a and 4a and the tension maintaining units 4b and 4b. Each of the overflow fluid ports 7 d and the discharge port 7 c is connected to a drain tank 10 provided outside the housing 3.

  After the fluid pipe cutting device 2 is attached to the fluid pipe 1 in this way, the drive section 4a is driven to cut the fluid pipe 1 from the lower end side toward the upper end side by the diamond wires 4c and 4c. To go. As the cutting of the fluid pipe 1 by the diamond wires 4c and 4c proceeds, the fluid flowing in the fluid pipe 1 is released from the lower end side of the fluid pipe 1 and the inside of the housing 3 is filled with the fluid.

  The height of the fluid in the housing 3 from the lower end of the fluid pipe 1 at this time is a height generated by the fluid energy from the lower end of the fluid pipe 1 below the opening 7a and the overflow fluid port 7d. It becomes a certain height of about 3000 mm. Further, in this state, the on-off valve 7g provided at the discharge port 7c is in a closed state, so that the fluid is prevented from overflowing from the inside of the housing 3 while the fluid pipe 1 is being cut.

  While the fluid pipe 1 is being cut, the height of the fluid in the housing 3 moves up and down due to a change in the pressure in the fluid pipe 1 and the driving of the diamond wire 4c, but the height of the fluid is the height of the overflow fluid port 7d. Then, the fluid is discharged from the housing 3 toward the drain tank 10 through the overflow fluid port 7d. For this reason, in the housing 3 in the present embodiment, even if the fluid level in the housing 3 moves up and down due to a change in the pressure in the fluid pipe 1 or the driving of the diamond wire 4c, the fluid height remains open. Reaching the portion 7a is prevented.

  Further, during the cutting of the fluid pipe 1 by the diamond wires 4c and 4c, the force that presses the fluid pipe 1 upward from the diamond wires 4c and 4c and the torque that faces the circumferential direction of the fluid pipe 1 work. Since the support base 5 fixed to the housing 6 supports the fluid pipe 1 against the force acting on the fluid pipe 1 from the diamond wires 4c, 4c, the deformation of the fluid pipe 1 is prevented.

  Thus, in the cutting of the fluid pipe 1 in the present embodiment, the pressure of the fluid flowing in the fluid pipe 1 is a relatively small pressure of 0.03 MPa. It is possible to carry out without interposing a work valve for opening and closing the valve.

  Furthermore, since the fluid pipe 1 is cut while the upper end of the housing 3 is opened by the opening 7a, the cutting state of the fluid pipe 1 can be easily visually confirmed through the opening 7a. Can be managed and can be easily handled through the opening 7a without removing the housing 3 from the fluid pipe 1 when a failure or the like occurs in the members constituting the fluid pipe cutting device 2 or the fluid pipe 1. It is.

  Then, as shown in FIG. 3, the fluid pipe 1 is completely cut by the diamond wires 4 c and 4 c, thereby forming a pair of cut surfaces 1 b and 1 b perpendicular to the pipe axis of the fluid pipe 1. At the same time, a section 1c supported by the support base 5 is formed between the two cut surfaces 1b and 1b. In order to collect the slice 1 c from the inside of the housing 3, first, the drive unit 4 a and the diamond wires 4 c and 4 c are removed from the housing 3. Next, the locking means 5 such as a hook of a crane is locked to the locking ring 5d, and each support bolt 8 is rotated from below the lower casing 6 to thereby rotate the support base 5 to the lower casing 6. Remove from. In this state, the slice 1c is recovered from the housing 3 by pulling up the slice 1c together with the support 5 via the locking ring 5d. The locking means may be locked in advance with the locking ring 5d before the fluid pipe 1 is cut.

  After the section 1c is collected from the inside of the housing 3, as shown in FIG. 4, the fluid control 11 is inserted and arranged in the lower housing 6. The fluid control 11 includes a lid portion 11a formed in substantially the same shape as the upper end portion of the lower housing 6, and a water control portion 11b extending downward from the lid portion 11a. . Among these, a water-stop member 11c such as rubber is attached to the periphery of the lid portion 11a over the entire periphery, and can be brought into close contact with the inner periphery of the upper end portion of the lower housing 6 via the water-stop member 11c. Yes.

  Further, the left and right end portions of the water control portion 11b are formed in a tapered shape that is inclined from the upper end portion to the lower end portion toward the center in the left-right width direction of the control fluid 11, and the lower end portion of the water control portion 11b is It is formed flat so as to be continuous with the left and right end portions. A water stop member 11d continuous from the water stop member 11c is attached to the left and right end portions and the lower end portion of the water control portion 11b, and the water control portion 11b is connected to the lower casing through the water stop member 11d. 6 can be brought into close contact with the tapered surfaces 6b, 6b and the flat surface 6c.

  The water control part 11b is inserted between the cut surfaces 1b and 1b of the fluid pipe 1 and is tapered through the water stop member 11d by installing the control fluid 11 thus configured in the lower housing 6. It closely adheres to the surfaces 6b, 6b and the flat surface 6c. Furthermore, the lid portion 11a is in close contact with the inner periphery of the upper end portion of the lower housing 6 via the water stop member 11c.

  After the fluid control 11 is inserted and arranged in the lower housing 6, a fixing bolt 6d (not shown) is screwed into the upper portion of the lower housing 6 by screwing a fixing bolt 6d (not shown) above the lid portion 11a. Secure inside. By fixing the fluid control 11 in the lower housing 6 in this manner, the flow path of the fluid in the fluid pipe 1 is blocked by the flow control portion 11b, and the inside of the lower housing 6 from the inside of the upper housing 7 by the lid portion 11a. The release of fluid to is blocked.

  Next, the fluid stored in the upper housing 7 is discharged toward the drainage tank 10 by opening the on-off valve 7g of each discharge port 7c. When the discharge of the fluid from the inside of the upper housing 7 is completed, the upper housing 7 is removed from the lower housing 6, and the work for blocking the fluid flow path in the fluid pipe 1 by the series of fluid control 11 is finished.

  As described above, in the fluid pipe cutting device 2 according to the present embodiment, the opening 7a is formed at such a height that the fluid does not overflow from the opening 7a by the fluid energy formed by the fluid in the fluid pipe 1. Since the height of the fluid formed by the fluid discharged from the fluid pipe 1 into the housing 3 by the saw device 4 cutting the fluid pipe 1 is located below the opening 7a formed in the peripheral wall, Since the fluid tube 1 can be cut in a state where the housing 3 is opened by the opening 7a without overflowing from the opening 7a without sealing the housing 3, the fluid tube 1 is opened via the opening 7a. When the energy of the fluid to be handled is small, the width dimension in the vertical direction of the housing 3 can be set short, so that the wire saw from the opening 7a can be easily handled. Flow by device 4 You can visually recognize the cutting conditions of the tube 1, can be easier to manage the cutting conditions of the fluid pipe 1.

  Further, an overflow fluid port 7d for discharging the fluid to the outside of the housing 3 is formed below the opening 7a in the housing 3 and above the height of the fluid. Even if the vertical position of the fluid surface in the housing 3 changes due to the change of the fluid pressure in the fluid, the fluid overflows from the opening 7a by discharging the fluid out of the housing 3 from the overflow fluid port 7d. Can be prevented, and the influence on the cutting operation of the fluid pipe 1 can be suppressed.

  The wire saw device 4 includes a diamond wire 4c for cutting the fluid pipe 1 and a drive unit 4a for driving the diamond wire 4c, and the drive unit 4a is disposed above the opening 7a. The fluid pipe 1 can be cut by the diamond wire 4c without the possibility of fluid adhering to the drive unit 4a.

  The casing 3 is composed of an upper casing 7 that can be vertically separated and a lower casing 6 in which a fluid control 11 is disposed, and fluid is discharged out of the casing 3 at the lower end of the upper casing 7. Since the discharge port 7c is formed, after the fluid control is arranged in the housing 3, the fluid stored above the fluid control 11 in the housing 3 is discharged to the outside of the housing 3 through the discharge port 7c. Since it can discharge | emit, when an operator removes the upper housing | casing 7 from the lower housing | casing 6, the amount of fluids scattered outside the housing | casing 3 can be suppressed.

  Next, a fluid pipe cutting device according to a second embodiment will be described with reference to FIG. In addition, the same structure as the said Example and the overlapping structure are abbreviate | omitted. As shown in FIGS. 5A and 5B, the upper casing 7 ′ in the fluid pipe cutting device 2 ′ in this embodiment can be connected to the upper end of the lower casing 6 in a watertight manner, and is in the vertical direction. And a case body 7f that opens downward. The upper casing 7 'has a nested structure in which the vertical dimension can be expanded and contracted by the cylindrical body 7e and the case body 7f, and a watertight seal is provided between the cylindrical body 7e and the case body 7f by a packing (not shown). Is held in.

  The cylinder body 7e and the case body 7f are connected to each other by a plurality of operation bolts and nuts (not shown) having bolts formed in the left-right width direction of the housing 3 via respective flanges. The cylinder body 7e and the case body 7f operate the auxiliary means including the operation bolt / nut and the hydraulic mechanism (not shown) to move the case body 7f relative to the cylinder body 7e in the vertical width direction. It is possible.

  By configuring the upper housing 7 in this way, the fluid pipe cutting device 2 ′ in the present embodiment can change the height of the opening 7 a in accordance with the head of the fluid flowing in the fluid pipe 1. The trouble of manufacturing the housing 3 for each water head of each fluid can be saved.

  As described above, in the fluid pipe cutting device 2 ′ according to the present embodiment, the casing 3 has a structure in which the vertical width dimension can be expanded and contracted. Therefore, the height of the opening 7a is set to the fluid in the fluid pipe 1. The fluid pipe cutting device 2 'can be used in the fluid pipe 1 through which various fluids flow.

  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 embodiment, the cutting means is configured as the wire saw device 4 including the driving unit 4a and the diamond wire 4c. However, the cutting unit is a cylindrical hole saw that can be rotated in the horizontal direction by the driving unit and the driving unit. You may comprise as a cutting device provided with.

  In the above embodiment, the opening 7a is formed at the upper end of the housing 3. However, the height at which the opening 7a is formed is higher than the height generated by the fluid energy in the housing 3. It doesn't matter.

  In the above embodiment, the opening 7 a and the overflow fluid port 7 d are formed in the upper housing 7, but the height at which the opening 7 a is formed is sufficiently higher than the height generated by the fluid energy in the housing 3. If it is above, the overflow fluid port 7d may not be formed.

  In the embodiment, the fluid pipe 1 is cut by the pair of diamond wires 4c and 4c wound around the fluid pipe 1 so as to be perpendicular to the pipe axis of the fluid pipe 1. The fluid pipe 1 is cut by a pair of diamond wires 4c and 4c wound around the fluid pipe 1 so that the surface is tapered downward from both sides in the pipe axis direction of the fluid pipe 1 toward the support base 5. By doing so, the section may be smoothly collected from within the lower housing 6 without friction between both cut surfaces of the fluid pipe 1 and the section.

  Further, in the above embodiment, the fluid flow path of the fluid pipe 1 is blocked by inserting and arranging the fluid control 11 between the cut surfaces 1c and 1c of the fluid pipe 1 in the lower housing 6. For example, a butterfly valve, a gate valve, an emergency shutoff valve, a switching valve, or the like may be used.

DESCRIPTION OF SYMBOLS 1 Fluid pipe 2 Fluid pipe cutting device 3 Housing | casing 4 Wire saw apparatus (cutting means)
4a Drive part 4b Tension maintenance part 4c Diamond wire (cutter part)
6 Lower housing 7, 7 'Upper housing 7a Opening 7c Discharge port 7d Overflow fluid port 7e Cylindrical body 7f Case body 11 Fluid control

Claims (5)

A casing having a cylindrical peripheral wall attached to the fluid pipe in a sealed manner and extending upward, and an opening opening outwardly in the peripheral wall; and the fluid pipe in the casing via the opening A fluid pipe cutting device having a cutting means for cutting in an uninterrupted flow state, and capable of installing a fluid control that restricts the flow of fluid in the housing after the fluid pipe is cut by the cutting means,
The fluid pipe cutting device according to claim 1, wherein the opening is formed at a height at which the fluid does not overflow from the opening by the energy of the fluid formed by the fluid in the fluid pipe.   The overflow fluid outlet for discharging the fluid out of the casing is formed below the opening in the casing and above the height generated by the energy of the fluid. The fluid pipe cutting device described.   2. The cutting unit includes a cutter unit that cuts a fluid pipe and a drive unit that drives the cutter unit, and the drive unit is disposed above the opening. Or the fluid pipe | tube cutting device of 2.   The casing is composed of an upper casing that can be vertically separated and a lower casing in which the fluid control is disposed, and a lower end portion of the upper casing is formed with a discharge port for discharging fluid out of the casing. The fluid pipe cutting device according to any one of claims 1 to 3, wherein the fluid pipe cutting device is provided.   The fluid pipe cutting device according to any one of claims 1 to 4, wherein the casing has a structure in which a vertical width dimension can be expanded and contracted.

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