Separator / silencer and vacuum station

Abstract

To provide a separator / silencer that makes a gas-liquid separation function of a conventional separator / sealing water tank unnecessary.SOLUTION: The separator / silencer comprises: a gas-liquid separation chamber that separates sealing water used in a water-sealed vacuum pump that sucks gas from gas discharged from the water-sealed vacuum pump; and a noise reduction chamber that reduces exhaust noise of the gas.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a separator / silencer, in particular a separator / silencer applicable to a vacuum station in a vacuum sewer system, and also to a vacuum station comprising the separator / silencer. [Background technology]

[0002] A vacuum sewerage system is a system that collects liquid (hereinafter referred to as sewage) including domestic wastewater generated in homes into a vacuum station via a vacuum valve unit and a vacuum sewer pipe. An example of a conventional vacuum station is shown in FIG. 12. The conventional vacuum station 10 is equipped with a vacuum pump 11 that generates a vacuum that serves as the driving force for collecting sewage, a water collection tank 12 that temporarily stores the collected sewage, and the like, and is a facility that transports the sewage stored in the water collection tank 12 to a sewage treatment plant or the like.

[0003] The vacuum pump 11 creates a negative pressure (for example, -80 to -50 kPa) in the collection tank 12 by sucking gas (hereinafter referred to as exhaust gas) that carries the sewage from the collection tank 12. A vacuum valve unit (not shown) is connected to the collection tank 12 via a vacuum sewer pipe (in other words, a vacuum pipeline). By creating a negative pressure in the collection tank 12 with the vacuum pump 11, the sewage temporarily stored in the vacuum valve unit is transported together with the exhaust gas through the vacuum sewer pipe. The transported exhaust gas and sewage are stored in the collection tank 12. The vacuum station 10 also includes a pressure pump 13 that pressure-transports the sewage in the collection tank 12 to a sewage treatment plant or the like when a certain amount of sewage is stored in the collection tank 12. The vacuum station 10 can also include a deodorizing device (not shown) that removes odorous components contained in the exhaust gas sucked in by the vacuum pump 11.

[0004] In the conventional vacuum station 10, the vacuum pump 11 is configured as a water seal type vacuum pump. Exhaust gas stored together with sewage in a water collection tank 12 is sucked by the vacuum pump 11. The sucked exhaust gas is transported from the vacuum pump 11 to a separator / sealing water tank 14 together with sealing water. The inside of the separator / sealing water tank 14 forms a gas-liquid separation chamber that separates the transported exhaust gas and sealing water. Specifically, as shown in FIG. 13, the separator / sealing water tank 14 has a gas-liquid separation structure including a partition plate 14a. The partition plate 14a extends substantially vertically from the ceiling of the separator / sealing water tank 14. A gap is formed between the partition plate 14a and the bottom surface of the separator / sealing water tank 14. The sealing water can pass through this gap. The sealing water and exhaust gas transported from the vacuum pump 11 to the separator / sealing water tank 14 collide with the partition plate 14a and change the flow direction. The exhaust gas flows into an exhaust silencer 16 (described later) from an exhaust pipe attached to the ceiling of the separator / sealing water tank 14. The seal water falls into the separator / sealing water tank 14 and is stored there. This allows the exhaust gas and the seal water to be appropriately separated.

[0005] 12 again, the seal water stored in the separator / seal water tank 14 is supplied again to the vacuum pump 11 by the operation of the seal water pump 15. Also, the seal water stored in the separator / seal water tank 14 is transported to a cooling device 19 by a cooling water pump 18 and supplied again to the separator / seal water tank 14. This makes it possible to lower the temperature of the seal water in the separator / seal water tank 14. Fresh water is injected into the separator / seal water tank 14 through a fresh water pipe (reference number omitted). Also, the vacuum station 10 is provided with a drainage pit 20 that receives drainage water from the separator / seal water tank 14 and the like.

[0006] On the other hand, the exhaust gas separated from the sealing water in the separator / sealing water tank 14 is passed through an exhaust silencer 16 The exhaust gas is then transported to an exhaust tower through a mist separator 17, etc. An exhaust silencer 16 is provided to reduce the noise of the exhaust from the vacuum pump 11.

[0007] The vacuum station 10 also includes a control unit 21 that controls the operation of the vacuum pump 11, etc. Measurement values ​​such as the water level and pressure of the water collection tank 12, the water level and water temperature of the separator / sealing water tank 14, and the water level of the drainage pit 20 are input to the control unit 21. If an abnormality occurs in these measurement values, the control unit 21 is configured to issue an alarm from the alarm device 22. In addition to the above, various other configurations of vacuum stations are described in, for example, JP 2014-98284 A.

[0008] There are various installation modes for the vacuum station 10. For example, there is a stand-alone vacuum station in which the above-mentioned vacuum pump 11, water collection tank 12, and other devices are housed together in a building. There is also a vacuum station that is buried under a road due to site area restrictions, etc. In the vacuum station that is buried under a road, for example, the water collection tank 12 is buried in an underground space such as a manhole, and the vacuum pump 11 can be installed above ground.

[0009] Each piece of equipment that makes up the vacuum station is updated (in other words, replaced) with new equipment as necessary. However, in an installation environment with limited space, updating the vacuum station 10 is not easy. Among the pieces of equipment, the separator / water tank 14 is particularly large in size, and therefore there are the following problems with updating it.

[0010] Problems with loading and unloading plans If other equipment is installed between the loading / unloading entrance and the separator / sealing water tank 14, the other equipment may interfere with the loading / unloading of the separator / sealing water tank 14. For example, if the water collection tank 12 interferes, the operation of the sewerage system must be stopped during the removal of the water collection tank 12. It is preferable to place each piece of equipment in a position that does not interfere with the loading / unloading of other equipment, but this is difficult due to site area restrictions. In addition, the separator / sealing water tank 14 is large in size, so the number of loading / unloading entrances that can be used is limited. For example, loading / unloading entrances for pumps such as the vacuum pump 11 cannot be used because they are small in size. In addition, it is difficult to provide additional loading / unloading entrances for equipment renewal within a limited site area.

[0011] Tank structure issues The exhaust gas transported to the separator / water seal tank 14 together with the sewage gives off a strong foul odor. In addition, the components in the exhaust gas may damage other equipment in the vacuum station 10. Therefore, the separator / water seal tank 14 installed in the vacuum station 10 is formed into an integral structure with welded steel plates to ensure high airtightness. However, the separator / water seal tank 14 made of welded steel plates is difficult to disassemble for transportation. In addition, the separator / water seal tank 14 with an integral structure made of steel plates is expensive.

[0012] Problems with the preliminary plan Even if the separator / sealing water tank 14 can be carried in and out through the existing entrance / exit, it is difficult to install the existing separator / sealing water tank 14 and the new separator / sealing water tank 14 side by side within a limited site area due to the need to switch the piping and wiring. Conventionally, therefore, when updating the separator / sealing water tank 14, a temporary sealing water tank that does not have a gas-liquid separation structure and is relatively small in size is prepared. The temporary tank is carried in, the piping and wiring of the existing separator / sealing water tank 14 are switched to the temporary tank, and then the existing separator / sealing water tank 14 is carried out. Then, the new separator / sealing water tank 14 is carried in, and the piping and wiring of the temporary tank are switched to the new separator / sealing water tank 14. Then, the temporary tank is carried out. As described above, the conventional renewal of the separator / sealing water tank 14 requires many work steps and a long work time.

[0013] [Patent Document 1] JP 2014-98284 A Summary of the Invention [Problem to be solved by the invention]

[0014] The object of the present invention is to solve at least one of the above problems. That is, according to one embodiment of the present invention, it is possible to provide a separator / silencer that can eliminate the need for the gas-liquid separation function of the separator / sealing water tank.

[0015] Furthermore, according to one embodiment of the present invention, a vacuum station can be provided that includes a seal water tank that can be easily carried in and out as permanent equipment.

[0016] According to an embodiment of the present invention, a vacuum station can be provided that includes a disassemblable water seal tank.

[0017] Moreover, according to one embodiment of the present invention, a vacuum station equipped with an inexpensive sealing water tank can be provided.

[0018] Furthermore, according to one embodiment of the present invention, it is possible to provide a vacuum station equipped with a seal water tank that can be updated in a short time with a small number of steps. [Means for solving the problem]

[0019] According to one embodiment of the present invention, it is possible to provide a separator / silencer that includes a gas-liquid separation chamber that separates the seal water used in a water-seal vacuum pump that draws in gas from the gas discharged from the water-seal vacuum pump, and a sound reduction chamber that reduces the exhaust noise of the gas.

[0020] Furthermore, according to one embodiment of the present invention, a vacuum station can be provided that includes the above-mentioned separator / silencer, a water seal vacuum pump, and a seal water tank that stores seal water separated from the gas. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a diagram illustrating a schematic configuration example of a vacuum station according to a first embodiment of the present invention. [Diagram 2] 1 is a diagram showing a configuration example of a separator / silencer according to a first embodiment of the present invention; [Diagram 3] FIG. 2 is a diagram illustrating an example of the arrangement of a separator / silencer and a water seal tank according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a diagram illustrating an example of control of a vacuum pump in the first embodiment of the present invention. [Diagram 5] FIG. 4 is a diagram showing an example of control of a vacuum pump and a pressure pump in the first embodiment of the present invention. [Figure 6] FIG. 2 is a diagram showing an example of control of a cooling device, a cooling water pump, and a seal water tank drain valve in the first embodiment of the present invention. [Figure 7] 3 is a diagram showing an example of control of a cooling water pump, a seal water tank drain valve, and a seal water pump in the first embodiment of the present invention. FIG. [Figure 8] 5(A) and 5(B) are diagrams illustrating another example of control of the cooling water pump, the seal water tank drain valve, and the seal water pump in the first embodiment of the present invention. [Figure 9] FIG. 4 is a diagram showing an example of control of a seal water tank drain valve in the first embodiment of the present invention. [Figure 10] FIG. 2 is a diagram showing a process flow of an updating work in the first embodiment of the present invention in comparison with the prior art. [Figure 11] FIG. 11 is a diagram illustrating an example of the configuration of a vacuum station according to a second embodiment of the present invention. [Figure 12] FIG. 1 is a diagram illustrating an example of the configuration of a conventional vacuum station. [Figure 13] FIG. 1 is a diagram illustrating a schematic configuration example of a conventional separator / water seal tank. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following description is merely an example, and is not intended to limit the technical scope of the present invention to the following embodiment. In addition, in the drawings, the same or corresponding components are given the same reference numerals and duplicated descriptions are omitted. In the following description, unless otherwise specified, the terms "upper" and "lower" mean upper and lower in the vertical direction (in other words, the direction of gravity). In addition, "connection" is intended to include both an embodiment in which two members are directly connected to each other and an embodiment in which they are indirectly connected via another member. [First embodiment]

[0023] 1 is a diagram showing an example of the configuration of a vacuum station according to a first embodiment of the present invention. In this embodiment, in order to facilitate understanding of the basic configuration and operation of the vacuum station, a simple configuration in which one vacuum pump and one pressure delivery pump are provided will be described as an example.

[0024] As shown in FIG. 1, the vacuum station 1000 includes a water collection tank 100, a pressure pump 150, and a vacuum pump 200. The vacuum station 1000 also includes a water seal tank 300, a water seal pump 350, a separator / silencer 360, and a mist separator 370. The vacuum station 1000 also includes a cooling water pump 400, a cooling device 450, a drainage pit 500, and a control unit 600. The vacuum station 1000 of this embodiment is a stand-alone type in which each component, such as the water collection tank 100, the pressure pump 150, and the vacuum pump 200, is housed in an independent building. However, the present invention is not limited to the stand-alone type, and can also be applied to a vacuum station such as a road-buried type in which a water collection tank is buried underground, such as in a manhole, and a vacuum pump is installed above ground.

[0025] The water collection tank 100 is a container that collects sewage such as domestic wastewater (in other words, liquid) temporarily stored in the vacuum valve unit or the like, and exhaust gas (in other words, gas) that entrains the sewage. The water collection tank 100 stores the sewage that is entrained together with the exhaust gas. One end of a sewage inlet pipe 110 is connected to the top of the water collection tank 100, which entrains the sewage and exhaust gas temporarily stored in the private manhole of the vacuum valve unit or the like via a vacuum pipeline.

[0026] The water collection tank 100 is also provided with a sewage level gauge 112 and a pressure gauge 114. The sewage level gauge 112 is a gauge that measures the level of sewage stored in the water collection tank 100. The sewage level gauge 112 may be, for example, an electrode-type water level gauge. The value of the sewage level detected by the sewage level gauge 112 is output to the control unit 600. The pressure gauge 114 is a gauge that measures the pressure inside the water collection tank 100, i.e., the pressure on the suction side of the vacuum pump 200. The pressure value detected by the pressure gauge 114 is output to the control unit 600.

[0027] The pressure pump 150 is a pump that pressure-feeds the sewage stored in the water collection tank 100 to a sewer main line or a sewage treatment plant through a pressure pipe 160. The pressure pipe 160 is provided with a check valve 162. The check valve 162 is a valve that allows sewage to flow only in the direction from the water collection tank 100 to the sewer main line or the sewage treatment plant. The drainage water discharged from the pressure pump 150 is transported to the drainage pit 500 via a drainage ditch.

[0028] In addition, an exhaust pipe 120 that sends exhaust gas from the ceiling of the water collection tank 100 to an exhaust tower is connected to the water collection tank 100. The exhaust gas is exhausted through a vacuum pump 200 and a separator / silencer 360. and a mist separator 370 to the exhaust tower. The exhaust pipe 120 serves as a transport path for transporting the exhaust from the water collection tank 100 to the exhaust tower. The exhaust pipe 120 includes a pipe 120-1 that connects the vacuum pump 200 to a separator / silencer 360, which will be described later.

[0029] Next, the vacuum pump 200 will be described. The vacuum pump 200 is configured as a water-sealed vacuum pump. Specifically, the vacuum pump 200 has a main body formed of, for example, a cylindrical casing and an impeller, and the impeller is attached at a position eccentric to the casing. The vacuum pump 200 introduces seal water sent from a seal water tank 300 through a seal water pipe 351 by a seal water pump 350 into the casing to rotate the impeller. As a result, the seal water, which has a large mass, is formed into a concentric ring shape along the inner wall of the casing by centrifugal force.

[0030] The vacuum pump 200 changes the volume of the space surrounded by the inner wall of the water seal ring and the blades of the impeller by rotating the impeller, and continuously performs the functions of suction, compression, and exhaust through the intake and exhaust ports provided on the side wall or the inner wall of the impeller. As a result, the vacuum pump 200 sucks exhaust air from the gas phase in the water collection tank 100, creating a negative pressure inside the water collection tank 100. As a result, the sewage stored in a private inlet or the like is carried along with the exhaust air through the inside of the sewage inlet pipe 110 and stored in the water collection tank 100. The vacuum pump 200 discharges the seal water together with the exhaust air. The exhaust air and the seal water discharged from the vacuum pump 200 are mixed in the exhaust pipe 120 (specifically, the pipe 120-1) and transported to the separator / silencer 360. The drain discharged from the vacuum pump 200 is transported to the drainage pit 500 through a drainage ditch.

[0031] Further, the exhaust pipe 120 upstream of the vacuum pump 200 is provided with a check valve 206 that transports exhaust gas only in the direction in which the vacuum pump 200 sucks exhaust gas from the water collection tank 100 .

[0032] Next, the separator / silencer 360 according to one embodiment of the present invention will be described. Exhaust gas discharged from the exhaust port of the vacuum pump 200 is transported to the separator / silencer 360 through the pipe 120-1. Also, the seal water discharged from the vacuum pump 200 is transported to the separator / silencer 360 through the pipe 120-1. As described later, the separator / silencer 360 is configured to separate the exhaust gas from the seal water and to reduce the sound of the exhaust gas. The seal water separated from the exhaust gas by the separator / silencer 360 is supplied to the seal water tank 300 through the seal water pipe 353. FIG. 2 shows an example of the configuration of the separator / silencer 360 according to this embodiment.

[0033] The separator / silencer 360 is disposed between the vacuum pump 200 and the water seal tank 300. As an example, the separator / silencer 360 shown in FIG. 2 may include a body made of a resin such as polyvinyl chloride, including a generally cylindrical side wall 361 having an overall vertical length. The body may further include an upper wall 362 and a lower wall 363 fixed to upper and lower ends of the side wall 361. The separator / silencer 360 may further include a partition plate 364 extending laterally. The partition plate 364 may divide the inside of the body of the separator / silencer 360 into an upper sound reduction chamber 360a and a lower gas-liquid separation chamber 360b.

[0034] The partition plate 364 includes an opening (reference number omitted) to which a communication pipe 368 extending vertically through the partition plate 364 can be attached. This allows the gas-liquid separation chamber 360b and the sound reduction chamber 360a to communicate with each other, allowing the exhaust gas separated from the sealing water to flow into the sound reduction chamber 360a. Note that the partition plate 364 only needs to include an opening that penetrates it vertically, and the communication pipe 368 does not necessarily have to be provided. The separator / silencer 360 may be installed on a predetermined installation surface via legs 365 that extend substantially vertically. In this case, the legs 365 may be disposed vertically. A connection pipe (in other words, an outlet pipe) 367, which will be described later, can protrude between the lower wall 363 raised by 65 and the installation surface.

[0035] The gas-liquid separation chamber 360b is configured to separate the seal water flowing in through a pipe 120-1 (see FIG. 1) connected to the vacuum pump 200 from the exhaust gas. Specifically, in the gas-liquid separation chamber 360b, the side wall 361 includes an inlet opening (reference numeral omitted) to which a pipe connection nozzle (in other words, an inlet pipe) 366 can be attached. The pipe connection nozzle 366 can have an inclined tip so that the seal water and the exhaust gas are supplied toward the lower part of a baffle plate 369 (described later). The pipe connection nozzle 366 may be configured to be flange-connected to the pipe 120-1. The pipe connection nozzle 366 can constitute an end of the pipe 120-1. However, instead of the pipe connection nozzle 366, for example, a connection pipe (constituting an end of the pipe 120-1) similar to the connection pipe 367 may be fixed to the inlet opening of the side wall 361.

[0036] The lower wall 363 also includes an outlet opening (reference number omitted) to which a connecting pipe 367 can be attached. The connecting pipe 367 can form an end of the water seal pipe 353. The water seal pipe 353 has one end connected to a side opening of the water seal tank 300 (see, for example, FIG. 3). The other end of the water seal pipe 353 can be flange-connected to the connecting pipe 367.

[0037] The outlet opening may be provided in the side wall 361, or may be provided at a position between the side wall 361 and the bottom wall 363 (in this case, the outlet opening is partially formed in the bottom wall 363). In this case, the inner surface of the bottom wall 363 may be inclined downward toward the outlet opening so as to promote the flow of the sealing water separated from the exhaust gas toward the outlet opening.

[0038] A baffle plate (in other words, a baffle plate) 369 is disposed inside the gas-liquid separation chamber 360b facing the opening of the piping connection nozzle 366. The baffle plate 369 extends substantially vertically. The upper end of the baffle plate 369 is fixed to the partition plate 364, and extends toward the lower wall 363. The seal water and exhaust gas flowing in from the piping connection nozzle 366 can be caused to collide with the baffle plate 369, causing the seal water to fall. However, the baffle plate 369 does not necessarily have to be provided. The seal water flows into the seal water pipe 353 (not shown) through the connection pipe 367. In this way, the gas-liquid separation chamber 360b can separate the exhaust gas and the seal water.

[0039] In Fig. 2, the arrows show an example of the flow of exhaust gas. As shown by the arrows in Fig. 2, after colliding with the baffle plate 369, the exhaust gas passes the lower end of the baffle plate 369 and flows into the sound reduction chamber 360a from the communication pipe 368. A sufficient gap is provided between the baffle plate 369 and the lower wall 363 so as not to impede the flow of exhaust gas.

[0040] In the sound reduction chamber 360a, the exhaust is reduced by sound absorbing materials such as punched metal 360a-1 and glass wool 360a-2, as in the conventional silencer. However, the specific configuration of the sound reduction chamber 360a, such as the arrangement of the sound absorbing materials, is not limited to that shown in the figure, and the same configuration as that of an exhaust silencer used in a conventional vacuum station can be used. The exhaust finally leaves the separator / silencer 360 through a connecting pipe (in other words, an outlet pipe) 371 on the upper wall 362. The connecting pipe 371 may be configured to be flange-connected to the downstream exhaust pipe 120. As shown in FIG. 1, the exhaust that leaves the separator / silencer 360 is transported to an exhaust tower via a mist separator 370 and a deodorizing device 380. The mist separator 370 can separate moisture (mist) contained in the exhaust from the separator / silencer 360.

[0041] Thus, according to an embodiment of the present invention, the separator / silencer 360 is In addition to the sound reduction function of the conventional exhaust silencer of reducing the exhaust sound from the vacuum pump 200, the separator / silencer 360 has a gas-liquid separation function of separating the exhaust gas from the seal water. In this respect, the separator / silencer 360 of this embodiment differs from the exhaust silencer 16 provided in the conventional vacuum station 10. After the seal water and exhaust gas discharged from the vacuum pump 200 are separated into gas and liquid by the separator / silencer 360, substantially only the seal water can be transferred to the seal water tank 300. This makes it possible to eliminate the gas-liquid separation function of the separator / seal water tank 14 provided in the conventional vacuum station 10.

[0042] Therefore, in the vacuum station 1000 according to the embodiment of the present invention, instead of the conventional separator / sealing water tank 14 of an integral structure made of steel plate, the seal water tank 300 made of, for example, a resin panel tank can be used as a permanent device. In the embodiment of the present invention, the seal water tank 300 has substantially only the function of storing seal water, so high airtightness is not required. In this respect, the seal water tank 300 of the present embodiment is different from the separator / sealing water tank 14 provided in the conventional vacuum station 10. The seal water tank 300 does not require a gas-liquid separation structure such as the partition plate 14a. The panel tank forming the seal water tank 300 is made of resin panels such as FRP, and the panels are usually fixed by bolts or the like. To stop water, a packing or the like is sandwiched between the panels.

[0043] The water seal tank 300, which is a resin panel tank, can be easily disassembled, so that it can be transported through a pump entrance with a relatively small size. Also, by disassembling it, it can be easily transported in and out within the limited site area of ​​the vacuum station 1000 without being interfered with by other equipment. Also, since the material can be changed from conventional steel plate to resin, material and manufacturing costs can be reduced compared to the conventional separator / water seal tank 14. Also, as described below, the number of work steps required for equipment renewal can be reduced, shortening the work time.

[0044] FIG. 3 shows an example of the arrangement of the separator / silencer 360 and the seal water tank 300. The separator / silencer 360 may be arranged so that the seal water from the vacuum pump 200 flows naturally (i.e., without passing through a dedicated pump) to the separator / silencer 360. Specifically, as shown in FIG. 3, an inlet opening to which the pipe connection nozzle 366 is attached can be arranged at a position lower than the exhaust port of the vacuum pump 200 connected to the pipe 120-1. The seal water from the vacuum pump 200 is supplied to the pipe 120-1 through the seal water pipe 352. Therefore, the seal water can be allowed to flow naturally through the pipe 120-1 into the inlet opening of the separator / silencer 360 (and thus into the pipe connection nozzle 366). However, the inlet opening of the separator / silencer 360 may be arranged at substantially the same vertical position (in other words, height) as the exhaust port of the vacuum pump 200. Even in this case, for example, by extending the pipe 120-1 in a substantially horizontal direction, the sealing water can be made to flow into the inlet opening of the separator / silencer 360 without using a dedicated pump.

[0045] Also, the separator / silencer 360 can be positioned relative to the seal water tank 300 so that the seal water flows naturally (i.e., without the use of a dedicated pump) to the seal water tank 300. As an example, as shown in FIG. 3, the side wall 301 of the seal water tank 300 includes a side opening (number omitted) to which a connecting pipe 303 is attached. The connecting pipe 303 can form an end of the seal water pipe 353. The connecting pipe 303 can be flange-connected to the seal water pipe 353 which is connected to a connecting pipe 367 of the separator / silencer 360.

[0046] As described later, the maximum water level that can be stored in the seal water tank 300 is preset in the seal water tank 300, and the water level in the seal water tank 300 is controlled by the control unit 600 so as not to exceed this maximum water level. The outlet opening is disposed above the maximum water level of the tank 300. As a result, the outlet opening is always located above the water level of the seal water tank 300, so that the seal water after gas-liquid separation can flow into the seal water tank 300 by gravity.

[0047] However, if the connecting pipe 303 of the seal water tank 300 is open at a position above the water level of the seal water tank 300, there is a possibility that the exhaust gas after gas-liquid separation will flow into the seal water tank 300. This can be prevented by constantly filling the connecting pipe 303 with seal water.

[0048] As described later, the seal water tank 300 has an interlock water level (in other words, a minimum water level or a lower limit water level) that is set for each vacuum station 1000 so as to prevent the seal water pump 350 and the cooling water pump 400, which transport the seal water from the seal water tank 300, from running dry. Therefore, by locating the top of the connection pipe 303 at a position equal to or lower than the interlock water level of the seal water tank 300, the seal water pipe 353 can be filled with seal water. This makes it possible to prevent exhaust gas after gas-liquid separation from entering the seal water tank 300.

[0049] However, it is also possible to prevent exhaust gas from flowing into the water seal tank 300 by locating the top of the connecting pipe 303 at a position above the interlock water level and controlling the control unit 600 based on the water level of the water seal tank 300. A specific control method will be described later.

[0050] Referring again to FIG. 1 , the seal water tank 300 is provided with a seal water level meter 302 and a seal water temperature meter 304. The seal water level meter 302 is a meter that measures the water level of the seal water stored in the seal water tank 300. The seal water level meter 302 can be, for example, an electrode type water level gauge. The value of the seal water level detected by the seal water level meter 302 is output to the control unit 600. The seal water temperature meter 304 is a meter that measures the temperature of the seal water stored in the seal water tank 300. The water temperature value detected by the seal water temperature meter 304 is output to the control unit 600.

[0051] In addition, a drain pipe 310 that drains the seal water stored in the seal water tank 300 to the drain pit 500 is connected to the seal water tank 300. A seal water tank drain valve 312 is provided on the drain pipe 310. The seal water tank drain valve 312 is a valve that opens and closes the drain pipe 310, and opens when draining the seal water stored in the seal water tank 300 to the drain pit 500.

[0052] In addition, a fresh water pipe 320 for injecting fresh water into the seal water tank 300 is connected to the seal water tank 300. A valve 322 is provided in the fresh water pipe 320. The valve 322 is a valve for opening and closing the fresh water pipe 320, and is opened when fresh water is injected into the seal water tank 300.

[0053] In addition, a seal water pipe 351 is connected to the seal water tank 300 for transporting the seal water stored in the seal water tank 300 to the vacuum pump 200 via a seal water pump 350. The seal water pump 350 transports the seal water stored in the seal water tank 300 to the vacuum pump 200.

[0054] Next, the cooling water pump 400 will be described. The cooling water pump 400 is a pump that transports the seal water stored in the seal water tank 300 to the cooling device 450, and also supplies the seal water cooled by the cooling device 450 to the seal water tank 300. That is, a cooling pipe 410 that circulates and supplies the seal water stored in the seal water tank 300 via the cooling water pump 400 and the cooling device 450 is connected to the seal water tank 300.

[0055] The cooling device 450 cools the sealing water conveyed by the cooling water pump 400. The cooling device 450 can be, for example, a cooling tower. The wastewater discharged from the cooling device 450 is transported to the drainage pit 500 through a drainage ditch.

[0056] Next, the drainage pit 500 will be described. The drainage pit 500 is a container that stores drainage water generated in the vacuum station 1000. The drainage pit 500 stores drainage water generated in, for example, the pressure pump 150, the vacuum pump 200, the seal water tank 300, and the cooling device 450.

[0057] The drainage pit 500 is provided with a drainage water level measuring instrument 502. The drainage water level measuring instrument 502 is a measuring instrument that measures the water level of the drainage water stored in the drainage pit 500. The drainage water level measuring instrument 502 may be, for example, an electrode type water level gauge. The value of the drainage water level detected by the drainage water level measuring instrument 502 is output to the control unit 600.

[0058] Next, the control unit 600 will be described. The control unit 600 receives as input the water level value measured by the sewage water level gauge 112, the pressure value measured by the pressure gauge 114, and the water level value measured by the seal water level gauge 302. The control unit 600 also receives as input the water temperature value measured by the seal water temperature gauge 304, and the water level value measured by the drainage water level gauge 502. The control unit 600 is configured to issue an alarm from the alarm device 602 if an abnormality occurs in these measured values.

[0059] The control unit 600 controls the vacuum pump 200, the pressure pump 150, the seal water tank drain valve 312, the seal water pump 350, the cooling water pump 400, the cooling device 450, and the like based on various input values.

[0060] A specific example of control by the control unit 600 will be described below. FIG. 4 is a diagram showing an example of control of the vacuum pump 200. The control unit 600 controls the operation of the vacuum pump 200 based on the detection value of the pressure on the suction side of the vacuum pump 200. Specifically, as shown in FIG. 4, the control unit 600 stops the operation (rotation) of the vacuum pump 200 when the pressure value measured by the pressure measuring instrument 114 becomes lower than a first threshold value (e.g., −68.7 kPa). In addition, the control unit 600 operates the vacuum pump 200 when the pressure value measured by the pressure measuring instrument 114 becomes higher than a second threshold value (e.g., −63.7 kPa) set higher than the first threshold value. In this way, the control unit 600 controls the operation / stop of the vacuum pump 200 in a normal routine, triggered by the pressure value measured by the pressure measuring instrument 114 becoming higher than the second threshold value or lower than the first threshold value.

[0061] Furthermore, when the pressure value measured by the pressure gauge 114 becomes higher than a third threshold value (e.g., −50.0 kPa) that is set higher than the second threshold value, the control unit 600 issues an alarm that the degree of vacuum has decreased and starts the vacuum pump 200. Here, starting the vacuum pump 200 means operating the vacuum pump 200 with a trigger (pressure value becoming higher than the third threshold value) different from the above-mentioned normal routine. On the other hand, when the pressure value measured by the pressure gauge 114 becomes higher than the second threshold value and lower than a fourth threshold value (e.g., −58.9 kPa) that is lower than the third threshold value while an alarm that the degree of vacuum has decreased is issued, the control unit 600 resets the alarm. Through the above-mentioned control, the water collection tank 100 is controlled to an appropriate negative pressure.

[0062] 5 is a diagram showing an example of control of the vacuum pump 200 and the pressure pump 150. The control unit 600 controls the operation of the vacuum pump 200 and the pressure pump 150 based on a detection value of the sewage water level in the water collection tank 100.

[0063] Specifically, as shown in FIG. 5, the control unit 600 receives the measurement by the sewer water level measuring device 112. If the measured water level falls below a first threshold value (LLWL), the control unit 600 issues an alarm to the effect that the sewage water level has dropped, and stops the operation of the pressure pump 150. Furthermore, if the water level measured by the sewage water level meter 112 rises above a second threshold value (LWL) that is set higher than the first threshold value while an alarm to the effect that the sewage water level has dropped has been issued, the control unit 600 resets the alarm.

[0064] Furthermore, the control unit 600 operates the pressure pump 150 when the water level measured by the sewage water level gauge 112 becomes higher than a third threshold value (HWL) that is set higher than the second threshold value. On the other hand, the control unit 600 stops the operation of the pressure pump 150 when the water level measured by the sewage water level gauge 112 becomes lower than the second threshold value.

[0065] Furthermore, when the water level measured by the sewage water level gauge 112 becomes higher than a fourth threshold value (HHWL) that is set higher than the third threshold value, the control unit 600 issues an alarm that the sewage water level has risen and operates the pressure pump 150. On the other hand, when the water level measured by the sewage water level gauge 112 becomes lower than the second threshold value while an alarm that the sewage water level has risen has been issued, the control unit 600 resets the alarm and stops the operation of the pressure pump 150.

[0066] Furthermore, when the water level measured by the sewage water level gauge 112 becomes higher than a fifth threshold value (VHWL) that is set higher than the fourth threshold value, the control unit 600 issues an alarm to the effect that the sewage water level has risen further, and stops the operation of the vacuum pump 200. On the other hand, when the water level measured by the sewage water level gauge 112 becomes lower than the fourth threshold value while an alarm to the effect that the sewage water level has risen further is being issued, the control unit 600 resets the alarm and resumes the operation of the vacuum pump 200.

[0067] Furthermore, when the water level measured by the sewage water level gauge 112 becomes higher than a sixth threshold value (VHHWL) that is set higher than the fifth threshold value, the control unit 600 issues an alarm that the sewage water level has further risen, and stops the operation of the vacuum pump 200. On the other hand, when the water level measured by the sewage water level gauge 112 becomes lower than the third threshold value while an alarm that the sewage water level has further risen is being issued, the control unit 600 resets the alarm and resumes the operation of the vacuum pump 200. Through the above-mentioned control, the sewage stored in the water collection tank 100 is appropriately pumped out.

[0068] 6 is a diagram showing an example of control of the cooling device 450, the cooling water pump 400, and the seal water tank drain valve 312. The control unit 600 controls operation / stop of the cooling device 450, operation / stop of the cooling water pump 400, and opening / closing of the seal water tank drain valve 312 based on a detection value of the water temperature of the seal water in the seal water tank 300.

[0069] Specifically, as shown in Fig. 6, when the water temperature measured by the seal water temperature measuring instrument 304 becomes higher than a first threshold value (VHH), the control unit 600 issues an alarm that the seal water temperature has risen. On the other hand, when the water temperature measured by the seal water temperature measuring instrument 304 becomes lower than a second threshold value (VH) that is set lower than the first threshold value (VHH) while an alarm that the seal water temperature has risen has been issued, the control unit 600 resets the alarm.

[0070] Furthermore, when the water temperature measured by the seal water temperature measuring instrument 304 becomes higher than the second threshold value (VH), the control unit 600 opens the seal water tank drain valve 312. On the other hand, when the water temperature measured by the seal water temperature measuring instrument 304 becomes lower than a third threshold value (HH) set lower than the second threshold value, the control unit 600 closes the seal water tank drain valve 312.

[0071] In addition, the control unit 600 detects whether the water temperature measured by the sealing water temperature measuring device 304 is equal to or lower than a third threshold. When the water temperature measured by the seal water temperature gauge 304 becomes lower than a fourth threshold value (H) set lower than the fourth threshold value (HH), the control unit 600 operates the cooling device 450 and the cooling water pump 400. On the other hand, when the water temperature measured by the seal water temperature gauge 304 becomes lower than a fifth threshold value (L) set lower than the fourth threshold value (H), the control unit 600 stops the operation of the cooling device 450 and stops the operation of the cooling water pump 400. By the above-mentioned control, the seal water in the seal water tank 300 is controlled to an appropriate temperature.

[0072] 7 is a diagram showing an example of control of the cooling water pump 400, the seal water tank drain valve 312, and the seal water pump 350. The control unit 600 controls operation / stop of the cooling water pump 400, opening / closing of the seal water tank drain valve 312, and operation / stop of the seal water pump 350 based on the detection value of the seal water level of the seal water tank 300.

[0073] Specifically, as shown in FIG. 7, when the water level measured by the seal water level measuring instrument 302 becomes higher than the first threshold value (HHWL) (in other words, the maximum water level of the seal water that can be stored in the seal water tank 300), the control unit 600 issues an alarm that the seal water level has risen. On the other hand, when the water level measured by the seal water level measuring instrument 302 becomes lower than the second threshold value (LLWL), the control unit 600 issues an alarm that the seal water level has decreased, stops the operation of the seal water pump 350 and the cooling water pump 400, and further closes the seal water tank drain valve 312. The second threshold value (LLWL) at which the operation of the seal water pump 350 and the cooling water pump 400 that transport the seal water from the seal water tank 300 is stopped is also called the interlock water level. By the above-mentioned control, the seal water in the seal water tank 300 is controlled to an appropriate water level.

[0074] 7 is substantially the same as an existing control method applicable to the separator / sealing water tank 14 of the conventional vacuum station 10. When the top of the pipe (the connecting pipe 303 in this embodiment) connected to the side opening of the seal water tank 300 is located at the same position as the interlock water level or below the interlock water level in the seal water tank 300, the above-mentioned existing control method can keep the seal water pipe 353 constantly filled with seal water. This makes it possible to prevent exhaust gas after gas-liquid separation in the separator / silencer 360 from flowing into the seal water tank 300.

[0075] On the other hand, when the top of the piping connected to the side opening of the sealing water tank 300 is located above the interlock water level, the control unit 600 can be configured to perform the following control instead of the control shown in Figure 7.

[0076] For example, as shown in FIG. 8(A), in addition to the first threshold value (HHWL) and the second threshold value (LLWL) in FIG. 7, a third threshold value (LWL) can be set for the water level of the seal water tank 300, which is set lower than the first threshold value (HHWL) and higher than the second threshold value (LLWL). The third threshold value (LWL) corresponds to the position of the top of the pipe (connection pipe 303 in this embodiment) connected to the side opening of the seal water tank 300. In the control of FIG. 8(A), when the water level measured by the seal water level measuring instrument 302 becomes lower than the third threshold value (LWL), the control unit 600 issues an alarm to the effect that the seal water level has become lower than the top of the pipe. This makes it possible to prevent exhaust gas from flowing into the seal water tank 300. For example, by issuing an alarm and stopping the operation of at least one of the seal water pump 350 and the cooling water pump 400, it is possible to prevent the water level from further decreasing.

[0077] Alternatively, the water level of the seal water tank 300 may be changed so that the second threshold value (LLWL) in Fig. 7, i.e., the interlock water level, coincides with the position of the top of the piping (the connecting piping 303 in this embodiment). In this case, as shown in Fig. 8(B), when the water level of the seal water tank 300 becomes lower than the top of the piping, an alarm is issued, the operation of the seal water pump 350 and the cooling water pump 400 is stopped, and further, the seal water tank drain valve 312 is closed. This makes it possible to prevent the exhaust gas from flowing into the water seal tank 300.

[0078] Compared to the control method of Fig. 7, the control of Fig. 8(B) can be achieved, for example, by shortening the electrode rod of the existing electrode type seal water level measuring instrument 302. In contrast, the control method of Fig. 8(A) requires the addition of an alarm output contact to the control method of Fig. 7. Therefore, the control shown in Fig. 8(B) has the advantage that it can be achieved in a cheaper manner than the control of Fig. 8(A).

[0079] 9 is a diagram showing an example of control of the seal water tank drain valve. The control unit 600 controls the opening / closing of the seal water tank drain valve 312 based on the detection value of the drain water level in the drain pit 500.

[0080] 9, when the water level measured by the drainage water level measuring instrument 502 becomes higher than the first threshold value (HHWL), the control unit 600 issues an alarm that the drainage water level has risen and closes the seal water tank drain valve 312. On the other hand, when the water level measured by the drainage water level measuring instrument 502 becomes lower than the second threshold value (HWL) set lower than the first threshold value (HHWL) while an alarm that the drainage water level has risen has been issued, the control unit 600 resets the alarm. By the above-mentioned control, the drainage in the drainage pit 500 is controlled to an appropriate water level.

[0081] As described above, the vacuum station 1000 of this embodiment includes the water seal tank 300, which does not have a gas-liquid separation function, unlike the conventional separator / water seal tank 14. The vacuum station 1000 also includes the separator / silencer 360, which has a gas-liquid separation function, unlike the conventional exhaust silencer 16. By adding the gas-liquid separation function of the conventional separator / water seal tank 14 to the conventional exhaust silencer 16 in this way, the water seal tank 300 in the embodiment of the present invention does not require high airtightness. Therefore, the water seal tank 300 can be configured with a resin tank panel. The material and manufacturing costs of the resin tank panel are cheaper than those of a welded steel plate tank. In addition, since the tank panel is generally fixed by bolts, it can be easily disassembled and assembled. Therefore, the water seal tank 300 can be easily disassembled and assembled within the premises of the vacuum station 1000. As a result, the water seal tank 300 can be easily carried in and out through the carrying-in / out entrance without interfering with other equipment of the vacuum station 1000. Therefore, loading and unloading operations can be easily carried out when updating equipment.

[0082] In addition, according to this embodiment, the number of work steps during equipment renewal can be reduced, and the work time can be shortened. It is difficult to carry in and install a new separator / sealing water tank 14 having a large size within a limited site area while leaving the existing separator / sealing water tank 14 having a large size in place. The seal water tank 300 of the vacuum station 1000 equipped with the separator / silencer 360 of this embodiment does not require a gas-liquid separation function, so the gas-liquid separation structure such as the conventional partition plate 14a described with reference to FIG. 13 can be omitted. Therefore, the seal water tank 300 having a relatively small size and having only a function of storing seal water can be used as a permanent device. Therefore, when updating existing equipment, the new seal water tank 300 can be carried in while the existing seal water tank 300 (which may be the existing separator / sealing water tank 14) is installed. Therefore, the piping and wiring of the existing seal water tank 300 (or the existing separator / seal water tank 14) can be directly switched to the newly installed seal water tank 300 without preparing a temporary tank.

[0083] The flow of the renewal work is shown in Figures 10(A) and (B). Figure 10(A) shows a conventional example, in which both the existing equipment and the new equipment are conventional separator / water seal tanks and exhaust silencers. Fig. 10(B) shows an example in which the existing equipment is a conventional separator / sealing water tank and exhaust silencer, and the new equipment is a sealing water tank and a separator / silencer according to this embodiment. It can be seen that steps (1) to (3) and (8) related to temporary equipment such as a temporary sealing water tank and temporary piping, which are required in the conventional example in Fig. 10(A), are not necessary in the renewal work in Fig. 10(B). This makes it possible to significantly shorten the work time required for renewal. [Second embodiment]

[0084] 11 is a diagram showing an example of the configuration of a vacuum station 1000A according to a second embodiment of the present invention, in which the same components as those in the vacuum station 1000 according to the first embodiment described with reference to FIG.

[0085] Unlike the first embodiment, the second embodiment includes an odor component removal device 250. The odor component removal device 250 is provided in the exhaust pipe 120 that transports exhaust air from the water collection tank 100 to the vacuum pump 200, and removes odor components contained in the exhaust air. The odor component removal device 250 can use a deodorizer that can be used under negative pressure, such as a high-concentration odor deodorizer used in vacuum trucks, food waste, and sewage treatment plants. This allows the odor component removal device 250 to adsorb and remove odor components even under low-pressure conditions. The wastewater discharged from the odor component removal device 250 is transported to the drainage pit 500 via a drainage ditch.

[0086] Valves 252, 254 are provided in the exhaust pipes 120 on the upstream side (exhaust intake conveying path) and downstream side (exhaust discharge conveying path) of the odor component removal device 250, respectively. A bypass valve 256 is provided in the bypass pipe 122 that connects the upstream side and downstream side of the odor component removal device 250 and bypasses the odor component removal device 250. The valves 252, 254 are valves that open and close the exhaust pipes 120 on the upstream side and downstream side of the odor component removal device 250, respectively, and both are open under normal circumstances. The bypass valve 256 is a valve for bypassing the odor component removal device 250, and is closed under normal circumstances. The valves 252, 254 are both closed, for example, when the odor component removal device 250 is removed for maintenance or replacement. At that time, the bypass valve 256 can be opened to continue pump operation.

[0087] Furthermore, the exhaust pipes 120 on the upstream and downstream sides of the vacuum pump 200 may be provided with valves 202, 204 that are both normally open and are both closed, for example, when the vacuum pump 200 is removed for maintenance or replacement. Furthermore, the water sealing pipes 351, 352 may be provided with valves 208, 210 that are normally open and are both closed, for example, when the vacuum pump 200 is removed for maintenance or replacement.

[0088] Furthermore, the sealing water pipes 351 on the upstream and downstream sides of the sealing water pump 350 may be provided with valves 354, 356 that are both open under normal circumstances and that are both closed, for example, when the sealing water pump 350 is removed for maintenance or replacement. Furthermore, the cooling pipes 410 on the upstream and downstream sides of the cooling pump 400 may be provided with valves 412, 414 that are both open under normal circumstances and that are both closed, for example, when the cooling pump 400 is removed for maintenance or replacement.

[0089] In the second embodiment, substantially the same effects as in the first embodiment can be obtained. That is, since a separator / silencer 360 similar to that in the first embodiment is used instead of a conventional silencer, a water seal tank 300 without a gas-liquid separation structure can be installed instead of a conventional separator / water seal tank. The water seal tank 300, which essentially only has the function of storing water seal, can be constructed of resin tank panels, and can therefore be easily disassembled and assembled on the premises of the vacuum station 1000A. Therefore, the water seal tank 300 can be, The equipment can be easily loaded and unloaded through the loading / unloading entrance without interfering with other equipment in the vacuum station 1000A. This makes it easy to carry in and out the equipment when updating the equipment.

[0090] Furthermore, according to the second embodiment, as in the first embodiment, the number of work steps can be reduced and the work time can be shortened when updating the equipment of the vacuum station 1000A. Specifically, since the relatively small-sized seal water tank 300, which is substantially only provided with a function of storing seal water, can be used as a permanent device, there is no need to prepare a temporary tank. When updating existing equipment, a new seal water tank 300 can be carried in while the existing seal water tank 300 (which may be the existing separator / seal water tank 14) is still installed. The piping and wiring of the existing seal water tank 300 (or the existing separator / seal water tank 14) can be directly switched to the new seal water tank 300.

[0091] Although the embodiment of the present invention has been described above, the embodiment of the present invention is intended to facilitate understanding of the present invention and does not limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. Furthermore, any combination or omission of each component described in the claims and specification is possible within the scope of solving at least a part of the above-mentioned problems or achieving at least a part of the effects.

[0092] The present invention includes the following aspects. 1. A separator / silencer equipped with a gas-liquid separation chamber that separates the seal water used in a water seal vacuum pump that draws in gas from the gas discharged from the water seal vacuum pump, and a sound reduction chamber that reduces the noise of the gas exhaust. 2. The separator / silencer according to 1. above, The separator / silencer comprises a main body having a cylindrical side wall, a lower wall fixed to a lower end of the side wall, and an upper wall fixed to an upper end of the side wall, and a partition plate, the partition plate extending laterally inside the main body so as to define a gas-liquid separation chamber between the partition plate and the lower wall and to define a sound reduction chamber between the partition plate and the upper wall, The partition plate includes an opening penetrating the partition plate in the up-down direction, The side wall includes an inlet opening that opens into the gas-liquid separation chamber, and the bottom wall includes an outlet opening. Separator and silencer. 3. The separator / silencer according to 2. above, The separator / silencer includes a baffle plate fixed to the partition plate and extending vertically within the gas-liquid separation chamber, with a gap provided between the lower end of the baffle plate and the lower wall. 4. The separator / silencer described in 1 above; A water ring vacuum pump; A seal water tank for storing seal water separated from the gas; A vacuum station comprising: 5. A separator / silencer as described in 2. or 3. above; A water ring vacuum pump; A seal water tank for storing seal water separated from the gas; A vacuum station comprising: 6. A vacuum station as described in 5 above, an exhaust pipe is provided which connects an inlet opening of the separator / silencer to an exhaust port of the water ring vacuum pump and transports the gas discharged from the water ring vacuum pump together with the seal water used in the water ring vacuum pump; A vacuum station, wherein the inlet opening of the separator / silencer is located at the same position as the exhaust port of the water ring vacuum pump or below the exhaust port. 7. A vacuum station as described in 5. or 6. above, A seal pipe is provided connecting the outlet opening of the separator / silencer and the side opening of the seal tank, The maximum water level that can be stored in the water tank is preset. A vacuum station, the outlet opening of the separator / silencer being located at a position above the maximum water level. 8. A vacuum station as described in 7 above, An interlock water level is set in the seal water tank to stop the operation of the pump that transports seal water from the seal water tank. A vacuum station in which the top of the pipe attached to the side opening in the seal water tank is located at the same level as the interlock water level or below the interlock water level. An interlock water level is set in the seal water tank to stop the operation of the pump that transports seal water from the seal water tank. In the seal water tank, the top of the pipe attached to the side opening is located above the interlock water level, The vacuum station includes a controller configured to generate an alarm when it is detected that the water level in the seal tank is below the top of the piping. 10. A vacuum station according to any one of 1. to 9. above, The water tank is a vacuum station formed by a resin panel tank. [Industrial Applicability]

[0093] The present invention is applicable to vacuum stations in vacuum sewer systems. [Explanation of symbols]

[0094] 10 Vacuum Station 11 Vacuum Pump 12 Water collection tank 13 Pressure pump 14 Separator / water tank 14a Partition 15 Seal Pump 16 Exhaust silencer 17 Mist separator 18 Cooling water pump 19 Cooling device 20 Drainage pit 21 Control section 22 Alarm 100 Water collection tank 110 Sewage inlet pipe 112 Sewer water level gauge 114 Pressure Measuring Instrument 120 Exhaust pipe 120-1 Piping 122 Bypass pipe 150 Pressure Pump 160 Pressure Pipe 162 Check valve 200 Vacuum Pump 202, 204 Valve 208, 210 Valve 250 Odor component removal device 252, 254 valves 256 Bypass valve 300 Water Tank 301 Side wall 302 Seal Water Level Measuring Instrument 303 Connection piping 304 Sealing water temperature measuring instrument 310 Drain pipe 312 Seal tank drain valve 320 Fresh water pipe 322 Valve 350 Seal Pump 351, 352, 353 Water sealing pipe 354, 356 Valve 360 Separator and silencer 360a sound reduction room 360a-1 Punching metal 360a-2 Glass wool 360b Gas-liquid separation chamber 361 side wall 362 Upper Wall 363 Lower wall 364 Partition 365 Legs 366 Pipe connection nozzle 367 Connection piping 368 Communication pipe 369 Baffle Plate 370 Mist Separator 400 Cooling Water Pump 410 Cooling pipe 412, 414 Valve 450 Cooling device 500 Drainage pit 502 Drainage water level measuring instrument 600 Control section 602 Alarm 1000, 1000A Vacuum Station

Claims

1. A separator / silencer comprising: a gas-liquid separation chamber that separates the seal water used in a water seal vacuum pump that sucks in gas from the gas discharged from the water seal vacuum pump; and a sound reduction chamber that reduces the exhaust noise of the gas.

2. 2. The separator / silencer according to claim 1, The separator / silencer comprises a main body having a cylindrical side wall, a lower wall fixed to a lower end of the side wall, and an upper wall fixed to an upper end of the side wall, and a partition plate, the partition plate extending laterally inside the main body so as to define the gas-liquid separation chamber between the partition plate and the lower wall, and to define the sound reduction chamber between the partition plate and the upper wall, The partition plate includes an opening penetrating the partition plate in a vertical direction, The side wall includes an inlet opening that opens into the gas-liquid separation chamber, and the bottom wall includes an outlet opening. Separator and silencer.

3. 3. The separator / silencer according to claim 2, The separator / silencer includes a baffle plate fixed to the partition plate and extending vertically within the gas-liquid separation chamber, with a gap provided between the lower end of the baffle plate and the lower wall.

4. A separator / silencer according to claim 1; The water ring vacuum pump; A seal water tank for storing seal water separated from the gas; A vacuum station comprising:

5. A separator / silencer according to claim 2 or 3, The water ring vacuum pump; A seal water tank for storing seal water separated from the gas; A vacuum station comprising:

6. 6. A vacuum station as claimed in claim 5, further comprising: an exhaust pipe is provided which connects the inlet opening of the separator / silencer to an exhaust port of the water ring vacuum pump and transports the gas discharged from the water ring vacuum pump together with the seal water used in the water ring vacuum pump; A vacuum station, wherein the inlet opening of the separator / silencer is located at the same position as or below the exhaust port of the water ring vacuum pump.

7. 6. A vacuum station as claimed in claim 5, further comprising: A water seal pipe is provided to connect the outlet opening of the separator / silencer and a side opening of the water seal tank, A maximum water level of the sealing water that can be stored in the sealing water tank is preset, A vacuum station, wherein the outlet opening of the separator / silencer is located above the maximum water level.

8. 7. A vacuum station as claimed in claim 6, further comprising: A water seal pipe is provided to connect the outlet opening of the separator / silencer and a side opening of the water seal tank, A maximum water level of the sealing water that can be stored in the sealing water tank is preset, The outlet opening of the separator / silencer is located above the maximum water level. A vacuum station.

9. 8. A vacuum station as claimed in claim 7, further comprising: An interlock water level is set in the seal water tank to stop the operation of a pump that transports seal water from the seal water tank, A vacuum station, wherein within the seal water tank, the top of a pipe attached to the side opening is positioned at a position equal to or lower than the interlock water level.

10. 9. A vacuum station as claimed in claim 8, further comprising: An interlock water level is set in the seal water tank to stop the operation of a pump that transports seal water from the seal water tank, A vacuum station, wherein within the seal water tank, the top of a pipe attached to the side opening is positioned at a position equal to or lower than the interlock water level.

11. 8. A vacuum station as claimed in claim 7, further comprising: An interlock water level is set in the seal water tank to stop the operation of a pump that transports seal water from the seal water tank, In the seal water tank, a top of a pipe attached to the side opening is disposed at a position above the interlock water level, The vacuum station includes a controller configured to issue an alarm when it is detected that the water level in the seal water tank is below the top of the piping.

12. 9. A vacuum station as claimed in claim 8, further comprising: An interlock water level is set in the seal water tank to stop the operation of a pump that transports seal water from the seal water tank, In the seal water tank, a top of a pipe attached to the side opening is disposed at a position above the interlock water level, The vacuum station includes a controller configured to issue an alarm when it is detected that the water level in the seal water tank is below the top of the piping.

13. 5. A vacuum station as claimed in claim 4, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

14. 6. A vacuum station as claimed in claim 5, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

15. 7. A vacuum station as claimed in claim 6, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

16. 8. A vacuum station as claimed in claim 7, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

17. 9. A vacuum station as claimed in claim 8, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

18. 10. The vacuum station of claim 9, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

19. 11. The vacuum station of claim 10, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

20. 12. A vacuum station as claimed in claim 11, comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

21. 13. A vacuum station as claimed in claim 12, further comprising: A vacuum station, wherein the sealing water tank is formed of a resin panel tank.

Images