Support structure for water supply device and accumulator

Abstract

To secure a maintenance work space even in a water supply device in which an obstacle exists above an accumulator. [Solution] The device has an accumulator arranged inside a housing, and a movable stay that holds the accumulator and allows the accumulator arranged inside the housing to slide horizontally outside the housing via an open area that opens up part of the housing.

Description

[Technical Field]

[0001] The present invention relates to a water supply device and a support structure for an accumulator. [Background technology]

[0002] Among water supply devices such as direct-connected water supply devices, there is known a package-type water supply device in which components such as a pump device with a motor, piping, an accumulator, and a control panel are housed in a housing section consisting of a stand and a drip-proof pump cover.

[0003] In order to ensure a maintenance work space in such a water supply device, a configuration in which the accumulator slides up and down is known (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-140004 Summary of the Invention [Problem to be solved by the invention]

[0005] The water supply device described in Patent Document 1 requires space above the accumulator to slide upward, so it cannot be applied to structures where there are obstacles such as components or housings above the accumulator.

[0006] Therefore, there is a need for a water supply device that can ensure maintenance work space even in a structure where there are obstacles such as components or a housing above the accumulator.

[0007] An object of the present invention is to ensure a maintenance work space in a water supply device even in a structure in which there is an obstacle above the accumulator. [Means for solving the problem]

[0008] One aspect of the water supply device of the present invention is characterized by having a housing, an accumulator arranged inside the housing, and a movable stay that holds the accumulator and allows the accumulator arranged inside the housing to slide horizontally to the outside of the housing via an open area that opens up a portion of the housing. [Effects of the Invention]

[0009] According to one aspect of the present invention, in a water supply device, a maintenance work space can be secured even in a structure in which there are obstacles such as components or a housing above the accumulator. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a front view of a water supply device (pump system) according to a first embodiment. [Figure 2] FIG. [Figure 3] FIG. 4 is an enlarged cross-sectional view of the accumulator mounting joint. [Figure 4] FIG. 10 is a front view of the water supply device with the accumulator in operation. [Figure 5] FIG. 10 is a diagram showing the state when replacing an accumulator (pressure tank) and checking the charged pressure. [Figure 6] FIG. 10 is a diagram showing an accumulator unit according to a second embodiment. [Figure 7] 10 is a diagram showing a comparison of the movable ranges of Example 1 and Example 2 from above. FIG. [Figure 8] FIG. 10 is a diagram showing an accumulator unit according to a third embodiment. [Figure 9] 10A and 10B are diagrams illustrating a method for fixing an accumulator according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the water supply device of the present invention will be described with reference to the drawings. [Example]

[0012] A water supply apparatus equipped with a movable pressure tank (accumulator) according to a first embodiment of the present invention will be described below with reference to FIGS.

[0013] 1 is a front view of a pump system 101 according to the first embodiment. For ease of explanation, the front door is not shown.

[0014] This pump system 101 is a water supply device. The pump system 101 is composed of a housing frame (pump housing) 102 that supports the entire device, a control frame 104 that is installed on the housing frame 102 and that houses a control unit 103, a unit unit 105 that is a unit device housed within the housing frame 102, and the control unit 102 that controls the equipment of the unit unit 105 such as a pump.

[0015] The unit section 105 includes a No. 1 pump 106, a No. 2 pump 107, a pressure reducing backflow preventer 108, a pressure tank 109, a bypass pipe 110, a No. 1 check valve 111, a No. 2 check valve 112, a suction gate valve 113, a discharge elbow pipe 114, a suction pressure sensor (not shown), a discharge pressure sensor (not shown), a suction junction pipe 120, and a discharge junction pipe 121.

[0016] 1, two pumps are provided, but the number may be at least one. In unit section 105, the internal fluid flows from suction gate valve 113 to pressure reducing backflow preventer 108, suction junction pipe 120, No. 1 pump 106 or No. 2 pump 107, No. 1 check valve 111 or No. 2 check valve 112, discharge junction pipe 121, and discharge bend pipe 114, and when the inflow pressure is sufficiently high, the fluid is supplied to the demand side via bypass pipe 110 without passing through the pumps.

[0017] The control unit 102 is housed in a control unit frame 104 installed on top of the housing frame 102, and mainly includes an earth leakage breaker (not shown), an inverter (not shown), a control board (not shown), and other electronic devices. In the water supply unit, pressure values ​​obtained from the suction pressure sensor and discharge pressure sensor are input to the control board, which controls the inverter to operate the pump at variable speeds. Note that the control unit 103 may be installed on top of the housing frame 102 or may be housed within the unit unit 105.

[0018] One end of the suction junction pipe 120 is connected to a pressure-reducing backflow preventer 108. The pressure-reducing backflow preventer 108 is installed between the suction junction pipe 120 and the suction gate valve 113. The pressure-reducing backflow preventer 108 has the function of restricting the flow direction of the liquid in the flow path to one direction. A relief valve 117 is installed at the bottom of the pressure-reducing backflow preventer 108.

[0019] The relief valve portion 117 extends downward from the pressure-reducing backflow preventer 108. A water leak detection electrode may be provided at the outlet at the lower tip of the relief valve portion 117. The water leak detection electrode detects water leakage from the pressure-reducing backflow preventer 108. A detected water leak signal can be sent to the water leak detection board.

[0020] Thus, the housing is composed of a housing frame 102 that is provided on the inner wall of the housing and is used to secure components inside the housing, and a control frame 104 that is installed on the housing frame 102. The movable stay 201 is fixed to either the control frame 104 or the housing frame 102.

[0021] FIG. 2 is a perspective view of the movable accumulator portion 200. As shown in FIG.

[0022] The movable accumulator section 200 comprises an accumulator (movable pressure tank) 109 , a movable stay 201 , an accumulator mounting joint 202 , a hose joint 203 , an air vent cock 204 , a mounting base 205 , and a flexible hose 206 .

[0023] Accumulator 109 has a diaphragm inside and is filled with air. When pressurized water flows into the accumulator, the air inside is compressed, and the restoring force of the compressed air serves to maintain the pressure in the piping even when the pump stops.

[0024] Movable stay 201 consists of end stay 201A, middle stay 201B, and stay support portion 201C, and both ends of middle stay 201B are equipped with rotatable joints. Mounting base 205 is fixed to the side of control frame 104 by welding, and movable stay 201 is attached to mounting base 205 so that it can move horizontally. Mounting base 205 may be fixed with bolts, nuts, rivets, etc. Through holes are provided at both ends of end stay 201A, and are fixed with bolts that fit into through holes provided on the housing frame 102 side.

[0025] As described above, the movable stay 201 has an end stay 201A, an intermediate stay 201B, and a stay support portion 201C. One end of the stay support portion 201C is fixed to the housing, and has a first connecting portion 215 that rotatably connects the other end of the stay support portion 201C to one end of the intermediate stay 201B. Furthermore, it has a second connecting portion 216 that rotatably connects the other end of the intermediate stay 201B to one end of the end stay 201A. The other end of the end stay 201A holds the accumulator 109, so that the accumulator 109 is slidably held via the movable stay 201.

[0026] FIG. 3 is an enlarged cross-sectional view of the accumulator mounting joint 202.

[0027] The accumulator mounting joint 202 has an accumulator 109 mounting hole 202A at the top, a mounting plug hole 202B at the bottom, hose joint mounting holes 202C at two horizontal locations, and an air vent cock mounting hole 202D, all of which are connected by screwing.

[0028] The end stay 201A is sandwiched between the accumulator mounting joint 202 and the mounting plug 208. The threads of the mounting plug hole 202B and the mounting plug 208 are tapered threads, and when they are screwed in a specified amount, the threads engage with each other, sealing the water and preventing further screwing.

[0029] As a result, the accumulator mounting joint 202 is rotatably attached to the end stay 201 A. The flexible hose 206 has a resin hose on the inside and a casing tube on the outside, hose joints 203 on both ends of the resin hose, and an accumulator gate valve 209 on the primary side of the flexible hose 206 (discharge junction pipe 121).

[0030] In the pump system 101 configured as above, by removing the fixing bolt 207, the accumulator 109 can be moved horizontally together with the movable stay 201.

[0031] In this way, the accumulator 109 and the end stay 201A are held via the accumulator mounting joint 202. The accumulator mounting joint 202 has a first mounting portion 217 to which the accumulator 109 is attached. The first mounting portion 217 is rotatably held relative to the end stay 201A via a threaded portion. Furthermore, the accumulator mounting joint 202 has a second mounting portion 218 to which a flexible hose 206 connected to the junction pipe (discharge junction pipe 121) is attached.

[0032] FIG. 4 shows a front view of the water supply device with the accumulator 109 in operation.

[0033] By moving the accumulator 109 horizontally, the space that previously housed the accumulator 109 can be secured as a maintenance work space. This allows easy access to the backflow preventer 108 on the suction junction pipe side.

[0034] The movable stay 201 has two joints, so that the accumulator 109 can be moved not only towards the front but also to the outside of the housing on the front right side, providing a larger maintenance work space. Also, the number of joints is not limited to two, and may be one or more.

[0035] In this way, when accumulator 109 is slid and moved to the outside of the housing by movable stay 201, a maintenance area (maintenance work space) for performing maintenance on the components is formed inside the housing.

[0036] By connecting the accumulator 109 and the discharge junction pipe 121 via the flexible hose 206, a flow path is formed to allow pressure and fluid to flow in and out, thereby operating the accumulator 109 without interfering with the movement of the accumulator 109. The flexible hose 206 is made of a flexible resin interior material, which allows the accumulator 109 to move smoothly.

[0037] The exterior is a stainless steel casing tube that is connected to the internal resin hose. This prevents the resin hose from expanding due to pressure, improving its pressure resistance. Also, when the accumulator 109 is stored inside the control frame 104, it prevents the flow path from being blocked by bending the flexible hose 206. Furthermore, it prevents tools and other objects from coming into direct contact with the resin hose during maintenance work, protecting the resin hose.

[0038] The accumulator mounting joint 202 is rotatably attached to the end stay 201A, and is therefore able to absorb stress and twisting caused by bending of the flexible hose when the accumulator 109 is moved.

[0039] By providing the accumulator gate valve 209 on the primary side (discharge junction pipe 121) of the flexible hose 206, it is possible to cut off the pressure and fluid acting on the flexible hose 206 by opening and closing the gate valve. This allows for easy maintenance when replacing the flexible hose 206 and accumulator 109 due to deterioration over time without interrupting (stopping) the water supply of the entire water supply unit.

[0040] Figure 5 shows the state when replacing the pressure tank and checking the charged pressure.

[0041] The end stay 201A is fixed to the housing frame 102 with a fixing bolt 207 using a through hole formed at one end of the end stay 201A. This allows the accumulator 109 to be fixed in a position where it has been moved towards the front. Furthermore, a hexagonal shape is provided on the top of the accumulator mounting joint 202. The accumulator 109 can be removed by rotating the hexagonal part with a wrench or the like, making it easy to replace the accumulator 109.

[0042] Furthermore, by fixing the accumulator 109 in a position where it has been moved to the front, it is possible to avoid obstacles such as a control device or a housing above the check section 210 for the charged pressure of the accumulator 109. This makes it easier to check the charged pressure and perform the pressure charging work.

[0043] In this embodiment, the accumulator 109 may be disposed at any position within the housing. [Example]

[0044] A water supply device equipped with a movable pressure tank (accumulator) according to a second embodiment will be described with reference to Figures 6 and 7. Figure 6 shows the accumulator section 200 of the second embodiment. Figure 7 shows a comparison of the movable ranges of the first and second embodiments as viewed from above.

[0045] In the second embodiment, a cutout 211 is provided in a portion of the control frame 104. The height of the cutout 210 is formed to be greater than the height of the end stay 201A and the middle stay 201B. This makes it possible to suppress interference between the movable stay 201 and the control frame 104. Therefore, the movable range of the movable stay is greater than in the first embodiment, and a larger maintenance work space can be secured compared to the first embodiment. [Example]

[0046] A water supply apparatus equipped with a movable pressure tank (accumulator) according to a third embodiment will be described with reference to FIG.

[0047] 8 shows an accumulator section 200 in which the number of nodes of the movable stay 201 is one. The movable stay 201 of the third embodiment is composed of an approximately L-shaped end stay 201A and a stay support section 201C, and one end of the end stay 201A is attached to the stay support section 201C so as to be freely rotatable in the horizontal direction. The end stay 201A is approximately L-shaped, which allows for a reduction in the number of parts compared to the first embodiment.

[0048] As described above, the movable stay 201 has an end stay 201A and a stay support portion 201C. One end of the stay support portion 201C is fixed to the housing, and has a first connecting portion 215 that rotatably connects the other end of the stay support portion 201C to one end of the end stay 201A. The other end of the end stay 201A holds the accumulator 109, so that the accumulator 109 is slidably held via the movable stay 201. [Example]

[0049] A water supply device equipped with a movable pressure tank (accumulator) according to a fourth embodiment will be described with reference to Fig. 9. Fig. 9 shows a method for fixing the accumulator 109 when the accumulator 109 is moved to the outside of the control frame 104.

[0050] The accumulator 109 can be fixed by passing a fixing wire 212 formed to surround the outer diameter of the accumulator 109 through an accumulator fixing split pin 213, and then inserting the accumulator fixing split pin 213 into a front door hinge 214 fixed to the control frame 104. This makes it possible to prevent the accumulator 109 from moving accidentally due to external disturbances such as sudden winds during maintenance.

[0051] The water supply device of the above embodiment has a movable stay that is fixed to the side of the housing and is freely movable in the horizontal direction, an accumulator that maintains pressure within the unit piping, an accumulator mounting portion that is freely rotatably attached to the movable stay and connects the accumulator, and a flexible hose that forms a flow path between the main piping portion and the accumulator mounting portion.

[0052] According to the above embodiment, a maintenance work space can be secured even in a structure in which there are obstacles such as components and housings in the upper, lower, left and right directions of the accumulator.

[0053] While preferred embodiments of the present invention have been described and illustrated, it should be understood that these are illustrative of the present invention and should not be considered as limiting. Additions, omissions, substitutions, and other modifications can be made without departing from the scope of the present invention. Accordingly, the present invention should not be deemed limited by the foregoing description, but rather by the scope of the claims.

[0054] It should be noted that throughout this specification, it is assumed that the accumulator can be moved by opening a portion of the housing of the water supply device and sliding it from the opened area to the outside of the housing. Therefore, it may be slid by opening a side door instead of the front door. [Explanation of symbols]

[0055] 101...Pump system 102...Housing frame 103...Control unit 104...Control frame 105...Unit section 106...Pump No. 1 107...Pump No. 2 108... Pressure reducing backflow preventer 109...Accumulator 110...Bypass pipe 111...No. 1 check valve 112...No. 2 check valve 113...Suction gate valve 114...Discharge bend 115...Suction pressure sensor 116...Discharge pressure sensor 117...Relief valve section 118...Inverter 119...Control board 120...Suction junction pipe 121...Discharge junction pipe 200...Accumulator section 201... Movable stay 201A...End stay 201B...Intermediate stay 201C...Stay support part 202...Accumulator mounting joint 202A...Accumulator mounting hole 202B...Mounting plug hole 202C... Hose joint mounting hole 202D...Air vent cock mounting hole 203...Hose fitting 204...Air release valve 205...Mounting base 206...Flexible hose 207...Fixing bolt 208...Mounting plug 209...Accumulator gate valve 210...Accumulator check section 211...Control frame notch 212...Fixing wire 213...Accumulator fixing split pin 214...Front door hinge 215...First connection part 216...Second connection part 217...First mounting part 218...Second mounting part O...Rotation axis

Claims

1. The housing and an accumulator disposed inside the housing; a movable stay that holds the accumulator and is configured to allow the accumulator, which is disposed inside the housing, to slide horizontally to the outside of the housing via an open region that opens a portion of the housing; A water supply device comprising:

2. The water supply device according to claim 1, The housing includes: a housing frame provided on an inner wall of the housing and used to fix components inside the housing; and a control frame installed on the housing frame, The movable stay is fixed to either the control frame or the housing frame, A water supply device characterized in that when the accumulator is slid and moved outside the housing using the movable stay, a maintenance area is formed inside the housing for maintaining the components.

3. The water supply device according to claim 2, The housing includes: A pump section; a junction pipe connected to the pump section, The movable stay is The shaft has end stays, intermediate stays, and stay supports; one end of the stay support portion is fixed to the housing, and a first connection portion is provided which rotatably connects the other end of the stay support portion and one end of the intermediate stay, a second connection portion that rotatably connects the other end of the intermediate stay and the one end of the end stay, The water supply device is characterized in that the other end of the end stay holds the accumulator, so that the accumulator is slidably held via the movable stay.

4. The water supply device according to claim 2, The housing includes: A pump section; a junction pipe connected to the pump section, The movable stay is It has an end stay and a stay support portion, one end of the stay support portion is fixed to the housing, and a first connection portion is provided which rotatably connects the other end of the stay support portion and one end of the end stay, The water supply device is characterized in that the other end of the end stay holds the accumulator, so that the accumulator is slidably held via the movable stay.

5. The water supply device according to claim 3, The accumulator and the end stay are held together via an accumulator mounting joint, The accumulator mounting joint includes: a first mounting portion to which the accumulator is attached; The first attachment portion is The water supply device is rotatably held on the end stay via a screw portion.

6. The water supply device according to claim 5, The accumulator mounting joint includes: A water supply device further comprising a second attachment portion to which a hose connected to the junction pipe is attached.

7. The water supply device according to claim 6, The hose is A water supply device characterized by being a flexible hose.

8. The water supply device according to claim 3, A water supply device characterized in that either the intermediate stay or the end stay is fixed to the housing frame via a connecting portion.

9. The water supply device according to claim 8, The connection portion is a fixing hole, A water supply device characterized in that fixing holes are provided on both ends of the end stays and on the housing frame, and when the accumulator is stored or slidably moved relative to the housing, the accumulator is fixed to the movable stays by screwing into the fixing holes.

10. The water supply device according to claim 2, A water supply device characterized in that the control frame has a cutout portion that includes the area of ​​contact when the accumulator moves to a range where it contacts the control frame via the movable stay.

11. The water supply device of claim 7, a water supply device comprising an accumulator gate valve on the primary side of the flexible hose;

12. The water supply device according to claim 1, A water supply device characterized in that it further has a fixing mechanism for fixing the accumulator that has been moved to the outside of the housing when the accumulator is slid and moved to the outside of the housing by the movable stay.

13. an accumulator disposed within the housing; a movable stay that holds the accumulator and is configured to allow the accumulator, which is disposed inside the housing, to slide horizontally to the outside of the housing via an open region that opens a portion of the housing; A support structure for an accumulator, comprising:

14. The support structure for an accumulator according to claim 13, The movable stay is The shaft has end stays, intermediate stays, and stay supports; One end of the stay support portion is fixed to the housing, a first connecting portion that rotatably connects the other end of the stay support portion and one end of the intermediate stay, a second connection portion that rotatably connects the other end of the intermediate stay and the one end of the end stay, The other end of the end stay holds the accumulator, so that the accumulator is slidably held via the movable stay.

15. The support structure for an accumulator according to claim 13, The movable stay is It has an end stay and a stay support portion, one end of the stay support portion is fixed to the housing, and a first connection portion is provided to rotatably connect the other end of the stay support portion and one end of the end stay, The other end of the end stay holds the accumulator, so that the accumulator is slidably held via the movable stay.

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