Steam trap

Abstract

By suppressing the accumulation of condensate and ensuring stable discharge, the amount of steam leaked is reduced. [Solution] The steam trap 10 includes a device body 20 that connects one pipe P1 and the other pipe P2. The device body is provided with a first chamber S12 adjacent to one pipe and communicating with a first space S11 provided inside the device body, a second chamber S22 adjacent to the other pipe and communicating with a second space S21 provided inside the device body, and a connecting member 50 provided inside the device body that connects the first chamber and the second chamber. The flow path 50R of the connecting member is provided with an inlet M1 located in the first chamber and a discharge port M2 located in the second chamber. The second chamber is provided with a guide section 61 having a spraying section 611 to which the fluid discharged from the discharge port is sprayed.

Description

Technical Field

[0001] The present invention relates to a steam trap.

Background Art

[0002] Conventionally, various techniques have been proposed for steam traps that are used as part of a steam supply device through which a fluid containing steam (water vapor) passes inside a pipe and discharge drain (condensed water) from a steam piping system.

[0003] For example, some conventional steam traps include an operating mechanism having a lid, a valve, etc. In this steam trap, drain (condensed water) is automatically discharged by opening the lid or the valve.

[0004] However, in the above steam trap, due to operating the lid, valve, etc., there is a problem that a large amount of steam leaks due to a delay in the operation of the lid, valve, etc., or deformation / damage of the lid, valve, etc.

[0005] Therefore, as a technique for solving the problem, an orifice type, a labyrinth type, or a nozzle type steam trap without an operating mechanism has been proposed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the conventional technology described above, the drain discharged first and the drain discharged later are stored together in a narrow space, and due to collisions within the space, the drain cannot be discharged stably (i.e., the drain accumulates). As a result, it becomes unavoidable to use a flow path with an unnecessarily large diameter than the original flow path design value for drain discharge, which may increase the amount of steam leaking.

[0008] Therefore, the present invention has been made in view of the above circumstances, and aims to provide a steam trap that can reduce the amount of leaked steam by suppressing the accumulation of drain and stably discharging drain. [Means for solving the problem]

[0009] To solve the above problems, the steam trap according to the present invention comprises a device body that connects one pipe located upstream and the other pipe located downstream. The device body is provided with a first chamber adjacent to the one pipe and communicating with a first space provided inside the device body, a second chamber adjacent to the other pipe and communicating with a second space provided inside the device body, and a connecting member provided inside the device body and having a flow path that connects the first chamber and the second chamber. The flow path of the connecting member is provided with an inlet located in the first chamber and a discharge port located in the second chamber. The second chamber is provided with a guide section having a spraying section to which the fluid discharged from the discharge port is sprayed. The main body of the device is provided with a member having a guide portion, which is positioned in the vertical direction opposite to the discharge port of the connecting member. The guide portion is formed in the member as a recess composed of a spherical curved surface. Only one conical projection is provided in the recess of the member, projecting from the inner circumferential surface of the recess. The projection is positioned on the axis of the member. The axis of the projection coincides with the axis of the member. [Effects of the Invention]

[0010] According to the present invention, because of the above configuration, the accumulation of drain is suppressed and the amount of steam leaked can be reduced by stably discharging the drain. [Brief explanation of the drawing]

[0011] The drawings illustrate specific embodiments of the present invention relating to this disclosure, including not only essential components of the invention but also optional and preferred embodiments. [Figure 1] Figure 1 is a plan view of the main body of the device used in the steam trap according to the first embodiment. [Figure 2] (A) is a cross-sectional view taken along arrow AA in Figure 1, and (B) is a magnified view of a portion of (A). [Figure 3] Figure 3 is a bottom view of the steam trap shown in Figure 1, with the first plug removed. [Figure 4] Figure 4 is a plan view of the steam trap shown in Figure 1, with the second plug removed. [Figure 5] (A) is a cross-sectional view of the main body of the steam trap according to the first embodiment, similar to Figure 2, and (B) is a partially enlarged view of a part of (A). [Figure 6] Figure 6 is a partially enlarged view similar to Figure 5(B) of a steam trap according to the first modified example of the first embodiment. [Figure 7] (A) is a cross-sectional view of the main body of the steam trap according to the second embodiment, similar to Figure 2, and (B) is a partially enlarged view of a part of (A). [Figure 8] Figure 8 is a partially enlarged view similar to Figure 5(B) of a steam trap according to the first modified example of the second embodiment. [Figure 9] (A) is a cross-sectional view of the main body of the steam trap according to the third embodiment, similar to Figure 2, and (B) is a partially enlarged view of a part of (A). [Figure 10] Figure 10 is a partially enlarged view similar to Figure 5(B) of a steam trap according to the first modified example of the third embodiment. [Figure 11] (A) is a cross-sectional view of the steam trap device body according to the fourth embodiment, similar to Figure 2, and (B) is a partially enlarged view of a part of (A). [Figure 12]FIG. 12 is a partial enlarged view similar to FIG. 5(B) in the steam trap according to the first modification of the fourth embodiment. [Figure 13] (A) is a cross-sectional view similar to FIG. 2 in the apparatus main body of the steam trap according to the fifth embodiment, and (B) is a partial enlarged view obtained by enlarging a part of (A).

MODE FOR CARRYING OUT THE INVENTION

[0012] [Embodiment] Hereinafter, an embodiment of the steam trap 10 will be described with reference to the accompanying drawings. The embodiment of the steam trap 10 described below embodies the technical idea of the present invention, and the technical idea of the present invention is not limited to the following embodiments. Also, the accompanying drawings schematically depict the steam trap 10. That is, the steam trap 10 shown in the accompanying drawings may be different from the steam trap 10 according to the present invention, and the corresponding lengths and the like in each drawing may also be different.

[0013] [First Embodiment] The basic configuration of the steam trap 10 according to the first embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the apparatus main body used for the steam trap 10 according to the first embodiment. FIG. 2(A) is a cross-sectional view taken along the arrow A-A in FIG. 1, and FIG. 2(B) is a partial enlarged view obtained by enlarging a part of (A). FIG. 3 is a bottom view of the steam trap 10 shown in FIG. 1 with the first plug 30 removed. FIG. 4 is a plan view of the steam trap 10 shown in FIG. 1 with the second plug 40 removed.

[0014] The steam trap 10 according to the present embodiment is used, for example, in a facility such as a thermal power plant or a nuclear power plant to automatically discharge the drain (condensed water of steam) generated in the steam (steam) transport pipe.

[0015] The steam trap 10 according to the present embodiment includes a first direction X, a second direction Y, and a vertical direction Z. The first direction X, the second direction Y, and the vertical direction Z are orthogonal to each other. The first direction X is, for example, the longitudinal direction of the device body 20 of the steam trap 10. The second direction Y is, for example, the lateral direction of the device body 20 of the steam trap 10. In the vertical direction Z, one is the upper side U and the other is the lower side D.

[0016] As shown in FIG. 1, the steam trap 10 according to the present embodiment includes a device body 20 that connects one pipe P1 arranged on the upstream side and the other pipe P2 arranged on the downstream side.

[0017] As shown in FIG. 2, a first insertion portion into which the first pipe P1 is inserted is formed at one end of the device body 20 in the first direction X, and a second insertion portion into which the second pipe P2 is inserted is formed at the other end of the device body 20 in the first direction X.

[0018] The first insertion portion is formed, for example, in a cylindrical shape, and a first screw is formed on the inner peripheral surface. On the other hand, the first pipe P1 is formed in a cylindrical shape, and a second screw that engages with the first screw of the first insertion portion is formed on the outer peripheral surface of the first pipe P1. By screwing the first screw and the second screw together, the first pipe P1 is attached to the device body 20.

[0019] The second insertion portion is formed, for example, in a cylindrical shape, and a third screw is formed on the inner peripheral surface. On the other hand, the second pipe P2 is formed in a cylindrical shape, and a fourth screw that engages with the third screw of the second insertion portion is formed on the outer peripheral surface of the second pipe P2. By screwing the third screw and the fourth screw together, the second pipe P2 is attached to the device body 20.

[0020] Steam at a temperature predetermined for the steam piping system is supplied to the inside of the first pipe P1 and the inside of the device body 20, but some of it is condensed due to the piping itself and the influence of the outside air. In Figure 2(A), arrows F1 and F2 indicate the flow of fluid inside the first pipe P1 and the second pipe P2, respectively. In other words, the fluid inside the first pipe P1, the device body 20, and the second pipe P2 flows from the first pipe P1 to the second pipe P2 via the device body 20, with the first pipe P1 being upstream and the second pipe P2 being downstream.

[0021] Furthermore, in Figure 2, the cross symbols drawn inside the first piping P1 and inside the first space S11 and first chamber S12 of the main body of the apparatus 20 represent steam (water vapor). In addition, in Figure 2, the dashed line symbols drawn inside the first chamber S22, first space S1, second chamber S22, and second space S21 of the main body of the apparatus 20 represent water (condensate) generated from the steam.

[0022] Inside the main body of the device 20, a first space S11 is formed, which is positioned adjacent to one of the pipes P1, and a first chamber S12 is formed, which is in communication with the first space S11.

[0023] The first chamber S12 is provided with a strainer 71 for removing foreign matter contained in the fluid. The strainer 71 is also provided with a biasing member 72 for biasing the strainer 71. The biasing member 72 is attached to the strainer 71 and constitutes an internal member 70 that is placed inside the first chamber S12.

[0024] Furthermore, inside the main body of the device 20, a second space S21 is formed, which is positioned adjacent to the other pipe P2, and a second chamber S22 is formed, which communicates with the second space S21.

[0025] Furthermore, the main body of the device 20 has a first opening 20H1 that connects the first chamber S12 to the outside. The first opening 20H1 is then closed by the first plug 30.

[0026] The first plug 30 comprises a hexagonal prism-shaped head and a cylindrical leg. A fifth thread is formed on the outer surface of the cylindrical leg. Meanwhile, a sixth thread is formed on the inner surface of the first opening 20H1 of the device body 20, which engages with the fifth thread. The first plug 30 is attached to the device body 20 by screwing the fifth thread and the sixth thread together.

[0027] Furthermore, the main body of the device 20 has a second opening 20H2 that connects the second chamber S22 to the outside. The second opening 20H2 is then closed by the second plug 40.

[0028] The second plug 40 comprises a hexagonal prism-shaped head and a cylindrical leg. A seventh thread is formed on the outer surface of the cylindrical leg. Meanwhile, an eighth thread, which engages with the seventh thread, is formed on the inner surface of the second opening 20H2 of the device body 20. The second plug 40 is attached to the device body 20 by screwing the seventh thread and the eighth thread together.

[0029] Furthermore, a partition wall 21 is formed inside the main body of the device 20, separating the first chamber S12 and the second chamber S22. In other words, the partition wall 21 is positioned between the first chamber S12 and the second chamber S22 in the vertical direction Z inside the main body of the device 20.

[0030] Furthermore, the main body of the device 20 is provided with a connecting member 50 having a flow path 50R that connects the first chamber S12 and the second chamber S22. The flow path 50R of the connecting member 50 is provided with an inlet M1 located in the first chamber S12 and an outlet M2 located in the second chamber S22.

[0031] In this steam trap 10, the size of the flow path 50R of the connecting member 50 is smaller than the radial size of the first chamber S12, so almost only condensed water (drain) flows from the first chamber S12 towards the second chamber S22. In other words, the steam trap 10 shown in Figures 1 to 4 is what is called an orifice type, labyrinth type, or nozzle type. A portion of the drain accumulates at the bottom of the first chamber S12 and is evaporated again by the steam that is sent in one after another.

[0032] The connecting member 50 is formed in a substantially cylindrical shape and comprises a first cylindrical portion inserted into the partition wall 21, a second cylindrical portion positioned on the second chamber S22 side, and a stepped portion 51 provided between the first cylindrical portion and the second cylindrical portion in the vertical direction Z. The stepped portion 51 is formed by the fact that the radial size of the outer circumferential surface of the second cylindrical portion is greater than the radial size of the outer circumferential surface of the first cylindrical portion.

[0033] Furthermore, in the steam trap 10 according to this embodiment, the connecting member 50 can be removed from the device body 20 when the member 60 is removed from the device body 20, and a separate connecting member 50 can be attached to the device body 20.

[0034] In the steam trap 10 according to this embodiment, multiple connecting members 50 can be provided for one device body 20. The multiple connecting members 50 have the same external shape for the first cylindrical part, the second cylindrical part, and the stepped part 51, but the radial size of the flow path 50R differs.

[0035] In the steam trap 10 according to this embodiment, a connecting member 50 having a flow path 50R of an appropriate size is attached to the main body of the device 20 according to the fluid state of one pipe P1 and the fluid state of the other pipe P2.

[0036] For example, in a steam piping system at a predetermined pressure and temperature of 170°C, if the fluid in one pipe P1 is at 165°C and the fluid in the other pipe P2 is at 95°C, an appropriate amount of condensate will be generated from the fluid, and there will be almost no steam leakage.

[0037] On the other hand, in a similar piping system, if the fluid in one pipe P1 is at 165°C and the fluid in the other pipe P2 is at 110°C, steam leakage will occur due to the small amount of condensate generated from the fluid.

[0038] On the other hand, in a similar piping system, if the fluid in one pipe P1 is at 140°C and the fluid in the other pipe P2 is at 70°C, the large amount of condensate generated from the fluid will cause condensate to accumulate, leading to problems in the operation of the equipment.

[0039] In other words, as mentioned above, the steam trap 10 shown in Figures 1 to 4 may not be able to reduce the amount of steam leaking due to the accumulation of drain and the inability to stably discharge the drain.

[0040] To solve this problem, the steam trap 10 shown in Figure 5 is provided with a component 60 in place of the second plug 40.

[0041] Figure 5(A) is a cross-sectional view of the main body 20 of the steam trap 10 according to the first embodiment, similar to Figure 2, and (B) is a partially enlarged view of a part of (A).

[0042] The component 60 is a second plug, positioned above U in the vertical direction Z, and comprises a hexagonal prism-shaped head 62 and a cylindrical leg 63 positioned below the head 62. The head 62 is fitted onto a tool such as a wrench, and can be attached to the device body 20 by the tool. A seventh thread is formed on the outer circumferential surface of the cylindrical leg 63. The component 60 is attached to the device body 20 by screwing the seventh thread and the eighth thread together.

[0043] At the lower end of the leg portion 63 in the vertical direction Z, there is a guide portion 61 having a spraying portion 611 to which the fluid discharged from the discharge port M2 is sprayed.

[0044] The guide portion 61 according to this embodiment is a recess formed at the lower end of the leg portion 63. More specifically, the guide portion 61, which is a recess, is composed of a first portion 61a, which is positioned above U in the vertical direction Z and is formed as part of a substantially spherical shape, and a second portion 61b, which is positioned below D in the vertical direction Z of the first portion 61a and is formed in a substantially cylindrical shape.

[0045] In the leg portion 63 of member 60 according to this embodiment, the radial dimension of the upper part of the second portion 61b in the vertical direction Z is the same as the radial dimension of the lower part of the second portion 61b in the vertical direction Z.

[0046] Furthermore, the substantially spherical curved surface in the vertical direction Z of the first part 61a is the spraying section 611 to which the fluid discharged from the discharge port M2 is sprayed.

[0047] Furthermore, in the steam trap 10 according to this embodiment, the axis 60Z of the member 60 and the axis 63Z of the cylindrically formed leg portion 63 are arranged to coincide.

[0048] Furthermore, in the steam trap 10 according to this embodiment, the axis 50Z of the cylindrical connecting member 50 and the axis 63Z of the cylindrical leg portion 63 are arranged to coincide (that is, the connecting member 50 and the leg portion 63 are arranged to be coaxial).

[0049] Furthermore, in the steam trap 10 according to this embodiment, the radial dimension (inner diameter) of the second portion 61b of the leg portion 63 is larger than the radial dimension (inner diameter) of the discharge port M2 of the connecting member 50.

[0050] Furthermore, in the vertical Z direction of the steam trap 10 according to this embodiment, a leak prevention member such as a packing or gasket is placed between the head 62 and the device body 20 to prevent fluid leakage.

[0051] In the steam trap 10 according to this embodiment, the discharge port M2 of the connecting member 50 is located outside the recess (guiding portion 61) of the member 60.

[0052] As the connecting member 50 is configured as described above, the fluid discharged from the discharge port M2 of the connecting member 50 hits the substantially spherical first portion 61a of the member 60 and diffuses in all directions along the curved surface of the first portion 61a in the first direction X and the second direction Y.

[0053] Subsequently, the fluid flows along the substantially cylindrical second portion 61b from the top U to the bottom D in the vertical direction Z. Since the radial dimension (inner diameter) of the second portion 61b in the leg portion 63 is larger than the radial dimension (inner diameter) of the discharge port M2 of the connecting member 50, the fluid discharged from the discharge port M2 flows inside the fluid flowing along the second portion 61b, and mixing of the two is suppressed.

[0054] Additionally, a portion of the drain discharged from the fluid accumulates in the flow path 50R of the connecting member 50.

[0055] As described above, the steam trap 10 according to this embodiment includes a device body 20 that connects one pipe P1 located upstream and the other pipe P2 located downstream. The device body 20 is provided with a first chamber S12 adjacent to the pipe P1 and communicating with a first space S11 provided inside the device body 20, a second chamber S22 adjacent to the other pipe P2 and communicating with a second space S21 provided inside the device body 20, and a connecting member 50 provided inside the device body 20 and having a flow path 50R that connects the first chamber S12 and the second chamber S22. The flow path 50R of the connecting member 50 is provided with an inlet M1 located in the first chamber S12 and a discharge port M2 located in the second chamber S22. The second chamber S22 is provided with a guide section 61 having a spraying section 611 to which the fluid discharged from the discharge port M2 is sprayed. Therefore, in the steam trap 10 according to this embodiment, the spraying section 611 can separate the fluid flow path 60R1 before it is sprayed onto the spraying section 611 from the fluid flow path 60R2 after it is sprayed onto the spraying section 611. In other words, in the steam trap 10 according to this embodiment, the spraying section 611 controls the fluid flow before it is sprayed onto the spraying section 611 and the fluid flow after it is sprayed onto the spraying section 611, respectively. As a result, in the steam trap 10 according to this embodiment, it is possible to suppress the mixing of drain discharged from the fluid before it is sprayed onto the spraying section 611 and the drain discharged from the fluid after it is sprayed onto the spraying section 611, thereby suppressing drain accumulation and stably discharging drain, and thus reducing the amount of leaked steam.

[0056] Furthermore, the steam trap 10 according to this embodiment does not have any operating mechanisms such as a lid or valve that operate relative to the device body 20. Therefore, it is possible to prevent large amounts of steam from leaking due to deformation or damage to operating mechanisms such as a lid or valve.

[0057] In the steam trap 10 according to the embodiment described above, the component 60 is a plug. However, the steam trap 10 according to the present invention is not limited to this. For example, the component 60 may be made of a part other than a plug.

[0058] Furthermore, the main body 20 of the steam trap 10 according to this embodiment is provided with a member 60 having a guide portion 61, which is positioned in the vertical direction Z so as to face the discharge port M2 of the connecting member 50. The guide portion 61 is formed as a recess in the member 60. Therefore, by simplifying the configuration of the guide portion 61, the manufacturing of the member 60 can be made easier.

[0059] As shown in Figure 5, the main body of the device 20 has a first opening 20H1 that connects the first chamber S12 to the outside, and a second opening 20H2 that connects the second chamber S22 to the outside. The steam trap 10 further includes a first plug 30 that closes the first opening 20H1, and a second plug 60 that closes the second opening 20H2. The second plug 60 is a component 60 that includes a guide portion 61. Therefore, it is possible to easily attach the component 60 to the main body of the device 20, and it is possible to suppress an increase in the number of parts of the steam trap 10.

[0060] [First modified example of the first embodiment] Next, a steam trap 10A of the first modified example of the first embodiment will be described with reference to Figure 6. Figure 6 is a partially enlarged view of the steam trap 10A according to the first modified example of the first embodiment, similar to Figure 5(B).

[0061] Note that the configuration of the steam trap 10A according to the first modified example of the first embodiment and the configuration of the steam trap 10 according to the first embodiment are identical except for the parts described below. Therefore, the description of the identical configuration will be omitted, and only the different configurations will be described.

[0062] In the steam trap 10A according to this modified example, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of the member 60.

[0063] In the modified steam trap 10A, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of member 60A. Therefore, in the modified steam trap 10A, the distance from the discharge port M2 of the connecting member 50 to the spraying portion 611 can be shortened. As a result, the spraying portion 611 can reliably separate the fluid flow path 50R before it is sprayed onto the spraying portion 611 from the fluid flow path 60R after it is sprayed onto the spraying portion 611. In other words, in the modified steam trap 10A, the spraying portion 611 controls the fluid flow before it is sprayed onto the spraying portion 611 and the fluid flow after it is sprayed onto the spraying portion 611, respectively. As a result, the steam trap 10A according to this modified example can suppress the mixing of drain discharged from the fluid before it is sprayed onto the spraying section 611 and drain discharged from the fluid after it is sprayed onto the spraying section 611. This suppresses the accumulation of drain and allows for stable drain discharge, thereby reducing the amount of leaked steam.

[0064] [Second Embodiment] Next, the steam trap 10B of the second embodiment will be described with reference to Figure 7. Figure 7(A) is a cross-sectional view of the device body 20 of the steam trap 10B according to the second embodiment, similar to Figure 2, and Figure 7(B) is a partially enlarged view of a part of Figure 7(A).

[0065] Note that the configuration of the steam trap 10B according to the second embodiment and the configuration of the steam trap 10 according to the first embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0066] In the steam trap 10B according to this embodiment, the guide portion 61, which is a recess, is composed of a first portion 61a, which is positioned above U in the vertical direction Z and is formed as part of a substantially spherical shape, and a second portion 61c, which is positioned below D in the vertical direction Z of the first portion 61a and is formed as a substantially frustoconical shape.

[0067] To describe the second part 61c in more detail, in the second part 61c, the opening area located below D in the vertical direction Z is larger than the opening area located above U in the vertical direction Z, which is connected to the first part 61a. In other words, the second part 61c is formed such that its area increases as you go down D in the vertical direction Z. To put it another way, the second part 61c is arranged to widen towards the bottom D in the vertical direction Z.

[0068] As the member 60B is configured as described above, the fluid discharged from the discharge port M2 of the connecting member 50 hits the substantially spherical first portion 61a of member 60B and spreads in all directions along the curved surface of the first portion 61a in the first direction X and the second direction Y.

[0069] Subsequently, the fluid flows along the substantially conical second section 61c from the top U to the bottom D in the vertical direction Z. In other words, as the fluid flows along the vertical direction Z from the top U to the bottom D, its radial dimension gradually increases.

[0070] In the steam trap 10B according to this embodiment, the radial dimension L1 of the lower part 61D of the guide section 61 is larger than the radial dimension L2 of the upper part 61U. Therefore, in the steam trap 10B according to this embodiment, it is possible to reliably prevent the fluid flow path 60R1 before it is sprayed onto the spray section 611 from intersecting with the fluid flow path 60R2 after it is sprayed onto the spray section 611. Consequently, in the steam trap 10B according to this embodiment, it is possible to prevent the drain discharged from the fluid before it is sprayed onto the spray section 611 from mixing with the drain discharged from the fluid after it is sprayed onto the spray section 611, thereby suppressing the accumulation of drain and stably discharging drain, thereby reducing the amount of leaked steam.

[0071] [First modified example of the second embodiment] Next, the steam trap 10C of the first modified example of the second embodiment will be described with reference to Figure 8. Figure 8 is a partially enlarged view of the steam trap 10C according to the first modified example of the second embodiment, similar to Figure 5(B).

[0072] Note that the configuration of the steam trap 10C according to the first modified example of the second embodiment and the configuration of the steam trap 10B according to the second embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0073] In the steam trap 10C according to this modified example, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of member 60C.

[0074] In the modified steam trap 10C, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of member 60C. Therefore, in the modified steam trap 10C, the distance from the discharge port M2 of the connecting member 50 to the spraying portion 611 can be shortened. As a result, the spraying portion 611 can reliably separate the fluid flow path 60R1 before it is sprayed onto the spraying portion 611 from the fluid flow path 60R2 after it is sprayed onto the spraying portion 611. In other words, in the modified steam trap 10C, the spraying portion 611 controls the fluid flow before it is sprayed onto the spraying portion 611 and the fluid flow after it is sprayed onto the spraying portion 611, respectively. As a result, the steam trap 10C according to this modified example can suppress the mixing of drain discharged from the fluid before it is sprayed onto the spraying section 611 and drain discharged from the fluid after it is sprayed onto the spraying section 611. This suppresses the accumulation of drain and allows for stable drain discharge, thereby reducing the amount of leaked steam.

[0075] [Third Embodiment] Next, the steam trap 10D of the third embodiment will be described with reference to Figure 9. Figure 9(A) is a cross-sectional view of the device body 20 of the steam trap 10D according to the third embodiment, similar to Figure 2, and Figure 9(B) is a partially enlarged view of a part of Figure 9(A).

[0076] Note that the configuration of the steam trap 10D according to the third embodiment and the configuration of the steam trap 10 according to the first embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0077] In the member 60D according to this embodiment, the guide portion 61 is provided with a projection 612, for example, a conical projection 612 that protrudes downward in the vertical direction Z from the guide portion 61. The projection 612 has its apex located, for example, downward D in the vertical direction Z.

[0078] Furthermore, in the steam trap 10D according to this embodiment, the axis 60Z of the member 60D and the axis 612Z of the projection 612 are arranged to coincide.

[0079] Furthermore, in the steam trap 10D according to this embodiment, the axis 50Z of the cylindrical connecting member 50 and the axis 612Z of the conical projection 612 are arranged to coincide (that is, the connecting member 50 and the projection 612 are arranged to be coaxial).

[0080] As the member 60D is configured as described above, the fluid discharged from the discharge port M2 of the connecting member 50 hits the projection 612 on the member 60D and diffuses in all directions along the surface of the conical projection 612 in the first direction X and the second direction Y.

[0081] In the steam trap 10D according to this embodiment, a projection 612 is provided in the recess (guide portion 61) of member 60D, projecting from the inner circumferential surface of the recess. Therefore, in the steam trap 10D according to this modified example, the projection 612 shortens the distance from which the fluid ejected from the discharge port M2 of the connecting member 50 hits the guide portion 61. As a result, in the steam trap 10D according to this embodiment, it is possible to reliably prevent the fluid flow path 60R1 before it is sprayed onto the spray portion 611 from intersecting with the fluid flow path 60R2 after it is sprayed onto the spray portion 611. Accordingly, in the steam trap 10D according to this embodiment, it is possible to prevent the drain discharged from the fluid before it is sprayed onto the spray portion 611 from mixing with the drain discharged from the fluid after it is sprayed onto the spray portion 611, thereby suppressing the accumulation of drain and stably discharging drain, thereby reducing the amount of leaked steam.

[0082] [First modified example of the third embodiment] Next, the steam trap 10E of the first modified example of the third embodiment will be described using Figure 10. Figure 10 is a partially enlarged view of the steam trap 10E according to the first modified example of the third embodiment, similar to Figure 5(B).

[0083] Note that the configuration of the steam trap 10E according to the first modified example of the third embodiment and the configuration of the steam trap 10 according to the first embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0084] In the steam trap 10E according to this modified example, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of the member 60E.

[0085] In the modified steam trap 10E, the discharge port M2 of the connecting member 50 is positioned inside the recess (guiding portion 61) of the member 60E. Therefore, in the modified steam trap 10E, the distance from the discharge port M2 of the connecting member 50 to the projection 612 of the spraying portion 611 can be shortened. As a result, the projection 612 can reliably separate the fluid flow path 60R1 before it is sprayed onto the projection 612 from the fluid flow path 60R2 after it is sprayed onto the projection 612. In other words, in the modified steam trap 10E, the projection 612 can control the fluid flow before it is sprayed onto the projection 612 and the fluid flow after it is sprayed onto the projection 612. As a result, in the steam trap 10E according to this modified example, it is possible to suppress the mixing of drain discharged from the fluid before it is sprayed onto the projection 612 and drain discharged from the fluid after it is sprayed onto the projection 612, thereby suppressing drain accumulation and stably discharging drain, and thus reducing the amount of steam that leaks out.

[0086] [Fourth Embodiment] Next, the steam trap 10F of the fourth embodiment will be described using Figure 11. Figure 11(A) is a cross-sectional view of the device body 20 of the steam trap 10F according to the fourth embodiment, similar to Figure 2, and Figure 11(B) is a partially enlarged view of a part of Figure 11(A).

[0087] Note that the configuration of the steam trap 10F according to the fourth embodiment, the configuration of the steam trap 10 according to the first embodiment, and the configuration of the steam trap 10B according to the second embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0088] The member 60F according to this embodiment has a projection 612. The member 60F also has a second portion 61c that is formed in a cone shape.

[0089] In the steam trap 10F according to this embodiment, the radial dimension L1 of the lower part 61D of the guide part 61 is larger than the radial dimension L2 of the upper part 61U. Therefore, in the steam trap 10F according to this embodiment, it is possible to reliably prevent the fluid flow path 60R1 before it is sprayed onto the spraying part 611 from intersecting with the fluid flow path 60R2 after it is sprayed onto the spraying part 611. Furthermore, since the member 60F has a projection 612, the fluid discharged from the discharge port M2 can be diffused in all directions in the first direction X and the second direction Y. Accordingly, in the steam trap 10F according to this embodiment, it is possible to prevent the drain discharged from the fluid before it is sprayed onto the projection 612 from mixing with the drain discharged from the fluid after it is sprayed onto the projection 612, thereby suppressing the accumulation of drain and stably discharging drain, thereby reducing the amount of leaked steam.

[0090] [First modified example of the fourth embodiment] Next, the steam trap 10G of the first modified example of the fourth embodiment will be described using Figure 12. Figure 12 is a partially enlarged view of the steam trap 10G according to the first modified example of the fourth embodiment, similar to Figure 5(B).

[0091] Furthermore, the configuration of the steam trap 10G according to the first modified example of the fourth embodiment and the configuration of the steam trap 10F according to the fourth embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0092] In the steam trap 10G according to this modified example, the discharge port M2 of the connecting member 50 is located inside the recess (guiding portion 61) of the member 60G.

[0093] In the modified steam trap 10G, the discharge port M2 of the connecting member 50 is positioned inside the recess (guiding portion 61) of the member 60G. Therefore, in the modified steam trap 10G, the distance from the discharge port M2 of the connecting member 50 to the projection 612 of the spraying portion 611 can be shortened. As a result, the projection 612 can reliably separate the fluid flow path 60R1 before it is sprayed onto the projection 612 from the fluid flow path 60R2 after it is sprayed onto the projection 612. In other words, in the modified steam trap 10G, the projection 612 can control the fluid flow before it is sprayed onto the projection 612 and the fluid flow after it is sprayed onto the projection 612. As a result, in the steam trap 10G according to this modified example, it is possible to suppress the mixing of drain discharged from the fluid before it is sprayed onto the projection 612 and drain discharged from the fluid after it is sprayed onto the projection 612, thereby suppressing drain accumulation and stably discharging drain, and thus reducing the amount of steam that leaks out.

[0094] [Fifth Embodiment] Next, the steam trap 10H of the fifth embodiment will be described using Figure 13. Figure 13(A) is a cross-sectional view of the device body 20 of the steam trap 10H according to the fifth embodiment, similar to Figure 2, and Figure 13(B) is a partially enlarged view of a part of Figure 13(A).

[0095] Note that the configuration of the steam trap 10H according to the fifth embodiment and the configuration of the steam trap 10 according to the first embodiment are identical except for the parts described below. Therefore, identical components are denoted by the same reference numerals and their descriptions are omitted, and only the different components will be described.

[0096] The component 60H consists of a cap 64 and a component 63 having a projection 612, etc.

[0097] The cap 64 has the same function as the head portion 62 in the member 60 according to the first embodiment. Furthermore, the member 63 has the same function as the leg portion 63 in the member 60 according to the first embodiment.

[0098] In the steam trap 10H according to this embodiment, the member 60H can be composed of two parts: a cap 64 and a member 63.

[0099] Furthermore, since the upper surface 21F of the partition wall 21 is formed to be inclined toward the second space S21, the drain can be directed toward the second space S21.

[0100] The above description is based on embodiments and modifications of steam traps 10A, 10B, 10C, 10D, 10E, 10F, 10G, and 10H according to the present invention. However, the present invention is not limited to embodiments and modifications, and various modifications are possible without departing from the spirit of the invention. Furthermore, the present invention also includes configurations that appropriately combine parts of the configurations of the above-described embodiments and parts of the configurations of modified embodiments. Of course, parts of the configuration of one embodiment described above may be appropriately combined with parts of the configuration of another embodiment, and parts of the configuration of one modified example described above may be appropriately combined with parts of the configuration of another modified example. Such configurations that make various modifications without departing from the spirit of the invention are also included in the technical scope of the present invention, and this will be clear to those skilled in the art from the description of the claims. [Explanation of Symbols]

[0101] 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H Steam Traps 20 Main unit of the device 30 First plug 50 Connecting Members 50R channel 50M1 Inlet 50M2 outlet 60, 60A, 60B, 60C, 60D, 60E, 60F, 60G, 60H components (second plug) 60R1 Flow path of the fluid before it is sprayed onto the spraying area 60R2 Flow path of fluid after spraying onto the spraying area 61 Guidance part 611 Spraying section 612 Protrusion P1 One of the pipes (first pipe) P2 Other piping (second piping) S11 1st space S12 First Chamber S21 2nd space S22 Second Chamber

Claims

1. The device comprises a main body that connects one pipe located on the upstream side with the other pipe located on the downstream side. The main body of the aforementioned device includes: A first chamber is provided adjacent to the aforementioned pipe and communicates with a first space located inside the main body of the device, A second chamber is provided adjacent to the other piping, and communicates with a second space located inside the main body of the device. A connecting member provided inside the main body of the apparatus and having a flow path connecting the first chamber and the second chamber, A system was established, The flow path of the connecting member is provided with an inlet located in the first chamber and an outlet located in the second chamber. The second chamber is provided with a guide section having a spraying section to which the fluid discharged from the discharge port is sprayed, The main body of the aforementioned device includes: In the vertical direction, a member having the guide portion is provided so as to face the discharge port of the connecting member, The member is formed such that the guide portion is a recess composed of a spherical curved surface. The recess of the member is provided with only one conical projection that protrudes from the inner circumferential surface of the recess. The projection is positioned on the axis of the member, A steam trap characterized in that the axis of the projection coincides with the axis of the member.

2. The steam trap according to claim 1, wherein the discharge port of the connecting member is located inside the recess of the member.

3. The main body of the apparatus is provided with a first opening that connects the first chamber to the outside, and a second opening that connects the second chamber to the outside. A first plug that closes the first opening, A second plug that closes the second opening, Furthermore, The steam trap according to claim 2, wherein the second plug is the member.

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