JP2015190428A - Turbine power generation facility and cradle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turbine power generation facility and a cradle capable of reducing oil tank breakage generation possibility and a thermal deformation amount of the cradle so as to improve reliability while space-saving.SOLUTION: A turbine power generation facility having a cradle comprises: rotary equipment for electric power generation; a cradle frame structured in a frame shape; an oil tank which is constituted separately from the cradle frame and accommodated within the cradle frame; an eaves part formed along a marginal part on the upper side end of the oil tank so as to project outward; an engaging groove formed along a top face inner part of the cradle frame so as to support the upper part of the oil tank movably due to the thermal telescopic motion by locking the eaves part; and a projection for engaging the bottom formed at the bottom edge of the cradle frame to project on the inner peripheral side so as to support the lower part of the oil tank movably due to the thermal telescopic motion by locking the bottom face peripheral edge of the oil tank.

Description

  Embodiments described herein relate generally to a turbine power generation facility and a gantry.

  Turbine power generation equipment is a module in which power generators such as steam turbines, reducers, and generators are attached to one or more steel mounts that also serve as transportation platforms, mainly for the purpose of reducing installation work. A turbine installation method for connecting and fixing the above modules at an installation site such as a power plant is performed (see, for example, Patent Document 1).

  This method has the following advantages in addition to the shortening of the installation process described above. That is, it is possible to cut the cost of transportation by omitting a conventionally used carrier for power generation equipment. In addition, by installing devices that have been placed on separate foundations on the same platform and modularizing them, the joints such as pipes that connect each device can be shortened and the installation area can be reduced. Therefore, it is possible to realize cost reduction and space saving as a whole power plant facility.

  In the technology relating to such a turbine power generation facility, the following two methods have been proposed as a method for modularizing oil-related auxiliary machines such as a lubricating oil device and a control oil device.

  In the first method, as shown in the plan view of FIG. 7, oil-related auxiliary machines such as an oil filter 4, an oil cooler 5, and an oil pump 6 are installed on an oil tank 9 having a basic structure to be modularized. In this method, the oil-related equipment module 103 is configured. In this method, since the oil tank 9 is included in the oil-related equipment module 103, the turbine module 101 including the steam turbine 1 and the turbine mount 7, the speed reducer 2, the generator 3, and the speed reducer / generator mount 8 are used. The reducer / generator module 102 is not provided with an oil tank. That is, in the first method, the turbine mount 7 and the speed reducer / generator mount 8 have a structure that does not have an oil tank inside.

  As shown in FIG. 8, the second method is a method in which the function of the oil tank 9 is provided inside the above-described turbine mount 7, reducer / generator mount 8, and the like. In this method, the turbine mount 7, the reducer / generator mount 8 itself is obtained by joining or combining part or all of the steel mount frame 11 constituting the turbine mount 7 and the reducer / generator mount 8. Is configured to form an oil tank of the oil tank 9. That is, in the second method, an oil tank integrated type frame in which the turbine frame 7 and the speed reducer / generator frame 8 are provided with an oil tank function is used.

  In addition, the base that supports the rotating machine main body and the oil supply device in which equipment such as an oil pump is installed on the oil tank are separated, and the oil supply device is inserted into the base from the side. A technique has been proposed in which the apparatus is slidable with respect to the base and the base is prevented from thermally expanding and contracting due to an increase in the temperature of oil (see, for example, Patent Document 2).

JP 2008-64107 A JP-A-6-193599

  In the above-described prior art, the first method requires a space for installing an oil-related equipment module in addition to a space for installing a turbine module and a reducer / generator module. For example, as compared with the second method, In such a case, there is a problem that space saving is not sufficient. In particular, in a small power generation facility with a scale of several MW or less, it is required to make the entire power plant facility compact. In the first method, the ratio of oil-related equipment modules to the total area of the power generation facility site is growing.

  On the other hand, in the second method, space saving can be realized by providing the oil tank function to the turbine mount, reducer / generator mount, but the turbine mount, reducer / generator mount itself. The oil tank has the following problems.

  In other words, if the gantry is damaged due to the load or vibration during operation of the rotating machine installed on the gantry, the gantry itself functions as an oil tank, which leads to damage to the oil tank itself and oil leakage. There is a risk. In addition, since the heated waste oil during operation is directly stored in the gantry, the gantry undergoes thermal deformation, and the bearing alignment changes, resulting in vibrations.

  Moreover, in the technique of patent document 2, since the oil supply apparatus is inserted into the base from the side and the oil supply apparatus is in a state in which it can move to the side (not fixed to the base), it is being transported. There is a possibility that the oil supply device may move due to vibration of the rotating machine or the like, and there is a risk of damage to the piping or oil tank of the oil supply device. Furthermore, oil tanks, etc. are placed on the base where devices such as rotating machines are not placed, and there are problems such as insufficient space savings and long pipes that connect the oil tank and rotating machinery. There is also a problem of becoming. Further, since an oil pump or the like is installed on the oil tank, there is a problem that a basic structure is required for the oil tank itself.

  The present invention has been made in order to solve the above-described problems, and can save space, reduce the possibility of oil tank damage and the amount of thermal deformation of the gantry, and provide a reliable system. An object of the present invention is to provide a turbine power generation facility and a gantry that can be improved.

  The turbine power generation facility of the embodiment is a turbine power generation facility configured by connecting a plurality of mounts that are mounted with power generation equipment and also serve as a transport mount. At least one of the gantry is configured separately from the rotating device for power generation placed on the gantry, the gantry frame configured in a frame shape, and the gantry frame. An oil tank housed in the upper part of the oil tank, a flange formed so as to protrude outward along the edge of the upper end of the oil tank, and an upper part of the upper surface of the frame. Is formed so as to protrude to the inner peripheral side at the lower end of the gantry frame, and the bottom peripheral edge of the oil tank is formed. And a bottom locking protrusion that locks and supports the lower portion of the oil tank so as to be movable by thermal expansion and contraction.

  The gantry according to the embodiment is a gantry on which power generation equipment is mounted and which also serves as a gantry for transportation and constitutes turbine power generation equipment. A gantry frame configured in a frame shape and the gantry frame are configured separately from each other, projecting outward along an oil tank accommodated in the gantry frame and an edge of an upper end portion of the oil tank. And a locking groove that is formed along the inner surface of the upper surface of the gantry frame and that locks the flange and supports the upper portion of the oil tank so as to be movable by thermal expansion and contraction. A bottom locking protrusion formed at the lower end of the gantry frame so as to protrude inwardly, locking the bottom peripheral edge of the oil tank and supporting the lower portion of the oil tank movably by thermal expansion and contraction; It comprises.

It is a figure which shows schematic structure of the turbine power generation equipment of embodiment, (a) is a top view, (b) is a side view. The figure which shows the AA cross-section schematic structure of the turbine power generation equipment of FIG. The figure which shows schematic structure of the mount frame of the turbine power generation equipment of FIG. The figure for demonstrating the principal part schematic structure of the mount frame of FIG. The figure for demonstrating the generation | occurrence | production state of the thermal expansion-contraction in a mount frame. The figure for demonstrating the generation | occurrence | production state of the thermal expansion-contraction in a mount frame. The figure which shows schematic structure of the turbine power generation equipment in a prior art. The figure which shows schematic structure of the mount frame in a prior art.

  Hereinafter, a turbine power generation facility and a gantry according to an embodiment will be described with reference to FIGS.

  Drawing 1 is a figure showing the schematic structure of the turbine power generation equipment of one embodiment, (a) is a top view and (b) is a side view. As shown in FIG. 1, in the turbine power generation facility of the present embodiment, the steam turbine 1 is mounted on a turbine mount 7, and a turbine module 101 is configured by these components. The turbine module 101 and a later-described reducer / generator / oil-related equipment module 104 can be transported in a module state, for example, a weight of about 25 tons and a length that can be accommodated in a 40-foot container. It is said.

  Further, the speed reducer 2 and the generator 3 are mounted on the oil tank storage type frame 10, and the oil filter 4, the oil cooler 5, and the oil pump 6 are stored in the oil tank storage type frame 10. It is mounted on the oil tank 12. These devices are integrated to form a reducer / generator / oil-related device module 104.

  Further, as shown in FIG. 2, the oil tank storage type gantry 10 is provided with a power generation equipment level adjustment pedestal 15, and the speed reducer 2 and the power generator 3 adjust the center height to the turbine side. It is arranged on the device level adjustment base 15. In addition, an oil tank 12 is disposed so as to be located immediately below the speed reducer 2 and the generator 3. The oil-related devices such as the oil cooler 5 are directly attached to the upper surface of the oil tank 12. Alternatively, as an example, an oil-related device is mounted on the turbine mount 7 and connected to the oil tank 12 by a flexible pipe, whereby the basic structure of the oil tank 12 can be omitted and simplified.

  In the present embodiment, the turbine module 101 in which the steam turbine 1 and the turbine mount 7 are assembled in advance at the manufacturing factory, the oil-related auxiliary machines such as the speed reducer 2, the generator 3, the oil pump 6, and the like, and the oil tank storage type. The speed reducer / generator / oil-related equipment module 104 assembled with the gantry 10 is transported to an installation location such as a power plant. Then, with the alignment of the steam turbine 1 and the speed reducer 2 as a reference, the turbine module 101 and the speed reducer / generator / oil related equipment module 104 are connected and installed in the axial direction by welding or bolting.

  In the present embodiment configured as described above, an oil tank 12 is housed in the oil tank housing type frame 10 on which the speed reducer 2 and the generator 3 are installed, such as the turbine power generation facility shown in FIG. The oil-related equipment module 103 composed of the oil tank 9, the oil filter 4, the oil cooler 5, the oil pump 6, and the like is not necessary. As can be seen from a comparison between FIG. 1 and FIG. 7, in the present embodiment in which the oil-related equipment module 103 can be omitted, the entire power generation facility can be made more compact.

  Further, in the turbine power generation facility shown in FIG. 7, the oil-related equipment and the oil tank 9 modularized must be juxtaposed around the turbine base 7 and the reducer / generator base 8.

  On the other hand, in this embodiment, the oil tank 12 is disposed immediately below the speed reducer 2 and the generator 3, and oil-related auxiliary machines such as the oil filter 4, the oil cooler 5, and the oil pump 6 are also oil. It is arranged on the tank 12. For this reason, it is possible to shorten the piping connection portion between the lubrication system, the control system, and the power generation equipment. For example, since the oil drain pipes of the speed reducer 2 and the generator 3 need only the shortest length to the oil tank 12 directly under these power generators, the oil drain pipe length is the same as that of the turbine power generation facility shown in FIG. It can be shortened to less than half.

  Furthermore, pipe loss can be reduced by shortening the pipes as described above, and in particular, pipe loss can be effectively reduced by shortening the supply / discharge oil trough on the power generation equipment side including the reducer with a relatively large amount of required oil. Can be reduced. If the pipe loss can be reduced in this way, the design oil amount of the oil-related equipment can be reduced, and the size of the oil-related equipment can be reduced, so that the occupied area of the entire oil-related equipment can also be reduced.

  Next, the independent structure of the oil tank 12 and the gantry frame 11 will be described. In this embodiment, as shown in FIGS. 2 and 3, the oil tank 12 is held in the gantry frame 11. The gantry frame 11 is made of a steel member so that the overall shape is a rectangular frame. In the present embodiment, the gantry frame 11 is arranged so that parallel portions facing each other of the H-shaped steels face in the vertical direction and the H-shaped steels are positioned on four sides of the rectangular frame shape. The parts are joined together.

  Further, the inner edge of the upper surface of the gantry frame 11 is cut over the entire circumference, and a locking groove 11a having a predetermined depth and a predetermined width is formed. Further, a rectangular fitting groove 11b is formed at the center portion in the longitudinal direction of the locking groove 11a on each side so as to extend further outward from the outer peripheral portion of the locking groove 11a. In FIG. 3, the side (H-shaped steel) located on the front side of the gantry frame 11 in the drawing is cut and only the remaining three sides are shown, but the locking groove 11a and the fitting groove are shown. 11b is also formed on the near side not shown in FIG.

The oil tank 12 has a substantially rectangular parallelepiped shape as a whole. As shown in FIGS. 2, 3, 5, and 6, a predetermined gap (see FIG. 2) between the outside of the side wall of the oil tank 12 and the inside of the side wall of the gantry frame 11 is allowed. D ₄ ) shown in FIG. 5 is formed, and the outer side wall portion of the oil tank 12 and the inner side wall portion of the gantry frame 11 are not in contact with each other. Most of the gantry frame 11 is occupied by the oil tank 12, and a space between the side wall portion of the oil tank 12 and the inner side wall portion of the gantry frame 11 is a cavity.

  A flange portion 12a is formed at the edge of the upper end portion of the oil tank 12 so as to protrude toward the outer periphery over the entire periphery. In addition, a rectangular protrusion 12b that protrudes in the outer peripheral direction in accordance with the above-described fitting groove 11b is formed at the longitudinal center of the flange 12a on each side. As in the case of the gantry frame 11 described above, in FIG. 3, the flange portion 12 a located on the front side of the oil tank 12 in the drawing is cut, and only the flange portions 12 a of the remaining three sides are illustrated. However, the flange portion 12a and the protruding portion 12b are also formed on the side of the oil tank 12 not shown in FIG.

  Then, by inserting the oil tank 12 from the top of the gantry frame 11 so that the flange 12a is positioned in the locking groove 11a and the protrusion 12b is positioned in the fitting groove 11b, the flange 12a and the protrusion The portion 12 b is locked to the gantry frame 11, and the upper portion of the oil tank 12 is supported by the gantry frame 11.

At this time, as shown in FIG. 4, at normal temperature, the outer edge of the flange 12a and the outer edge of the locking groove 11a, and the outer edge of the protrusion 12b and the outer edge of the fitting groove 11b. Between the _two , a gap d ₁ and a gap d ₂ are formed. Then, when the oil tank 12 is thermally expanded and contracted, such as when the temperature of the oil in the oil tank 12 rises, the flange portion 12a and the protruding portion 12b are movable with respect to the gantry frame 11. In this case, the gap d ₁ and the gap d ₂ have a size corresponding to the length of extension due to heat in order to allow extension of the oil tank 12 due to heat, and are set to be approximately equal. On the other hand, distance _{d 3} between the side of the side and the fitting groove 11b of the projecting portion 12b, the gap _{d 1,} is set much smaller than the gap _{d 2.} Thus, the oil tank 12 is locked to the gantry frame 11 in a state (positioned state) that can be thermally expanded and contracted in the longitudinal direction of each side and does not move greatly with respect to vibration or the like. .

  On the other hand, as shown in FIGS. 2, 3, and 5, a bottom locking projection 11 c that protrudes in the inner circumferential direction is formed at the lower end of the gantry frame 11 over the entire circumference. The bottom peripheral edge 12c of the oil tank 12 is configured to be locked on the bottom locking projection 11c. Further, the upper surface and the bottom surface peripheral edge portion 12c of the bottom portion locking projection portion 11c are subjected to a process for smoothing the surface, for example, a polishing process, so that the space between them is easily slipped. Then, as shown by arrows in FIG. 5, when the oil tank 12 thermally expands and contracts, such as when the temperature of the oil in the oil tank 12 rises, the bottom peripheral edge portion 12 c is movable with respect to the gantry frame 11. It has become.

  In the present embodiment configured as described above, the oil tank 12 and the gantry frame 11 are configured separately and have independent structures. The upper portion of the oil tank 12 is locked to the gantry frame 11 by the flange portion 12a and the protrusion 12b, and the lower portion of the oil tank 12 is locked to the gantry frame 11 by the bottom surface peripheral portion 12c.

  Therefore, unlike the structure in which the gantry itself forms the oil tank of the oil tank shown in FIG. 8, the vibration of the gantry frame 11 by the rotating machine does not directly become the vibration of the oil tank 12. Thereby, it is possible to suppress the vibration of the rotating machine from being transmitted to the oil tank 12, and to reduce the possibility of damage due to the vibration of the oil tank 12.

  Further, the heated waste oil during operation is stored in the oil tank 12, but the oil is not in direct contact with the gantry frame 11. For this reason, unlike the case where the heated oil drained during operation is directly stored in the gantry, the heat due to the drained oil does not act directly on the gantry frame 11, so that thermal deformation of the gantry frame 11 can be suppressed. it can. Thereby, the change in bearing alignment and the occurrence of vibration caused by the change can also be suppressed.

Further, the oil tank 12 extends toward the gantry frame 11 with the protrusion 12b fitted in the fitting groove 11b as a center by the heat of the above-described waste oil, but the bottom peripheral edge 12c of the oil tank 12 Since the upper surface of the bottom locking projection 11c of the frame 11 is slid, it is possible to suppress the occurrence of thermal stress in the oil tank 12 itself. Furthermore, since a gap d ₄ (see FIG. 5) is provided between the oil tank 12 and the gantry frame 11, the gantry frame 11 is prevented from being deformed due to thermal deformation of the oil tank 12. be able to.

  As described above, according to the present embodiment, space can be saved, the possibility of damage to the oil tank and the amount of thermal deformation of the gantry can be reduced, and the reliability can be improved. it can.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  1 ... Steam turbine, 2 ... Reducer, 3 ... Generator, 4 ... Oil filter, 5 ... Oil cooler, 6 ... Oil pump, 7 ... Turbine mount, 8 ... Reducer / Power generation Machine base, 9 ... Oil tank, 10 ... Oil tank storage type base, 11 ... Base frame, 11a ... Locking groove, 11b ... Fitting groove, 11c ... Projection for locking bottom part, 12 …… Oil tank, 12a …… Hut, 12b …… Protrusion, 12c …… Bottom edge, 15 …… Generator level adjustment base, 101 …… Turbine module, 102 …… Reduction gear / generator module, 103 ... Oil-related equipment module, 104 ... Reducer / generator / oil-related equipment module.

Claims (10)

Turbine power generation equipment configured by connecting a plurality of mounts that are also equipped with power generation equipment and also serve as a transport mount,
At least one of the mounts is
A rotating device for power generation placed on the mount;
A gantry frame configured in a frame shape;
An oil tank configured separately from the gantry frame and housed in the gantry frame;
A flange formed to protrude outward along the edge of the upper end of the oil tank;
A locking groove that is formed along the upper surface inside part of the gantry frame, locks the flange, and supports the upper part of the oil tank so as to be movable by thermal expansion and contraction,
A bottom locking protrusion formed at the lower end of the gantry frame so as to protrude inwardly, locking the bottom peripheral edge of the oil tank and supporting the lower portion of the oil tank movably by thermal expansion and contraction; A turbine power generation facility comprising: A projecting portion provided at the center of each side of the oil tank top of the rectangular parallelepiped shape and formed to protrude further outward from the flange;
The turbine power generation facility according to claim 1, further comprising: a fitting groove formed to extend further outward from the locking groove and into which the protrusion is fitted. Between the outer side wall part of the oil tank and the inner side wall part of the gantry frame, between the outer edge part of the flange part and the outer edge part of the locking groove, and the outer edge part of the protrusion part and the fitting The turbine power generation equipment according to claim 2, wherein a gap for allowing thermal expansion of the oil tank is provided between each outer edge of the groove. The turbine power generation facility according to any one of claims 1 to 3, wherein the oil tank is disposed so as to be positioned directly below the rotating device for power generation placed on the gantry. 5. The power generation device level adjustment pedestal is disposed on the gantry, and the power generation rotating device is disposed on the power generation device level adjustment pedestal. 6. Turbine power generation equipment. The turbine according to any one of claims 1 to 5, wherein the rotating device for power generation placed on the gantry includes at least one of a generator, a speed reducer, and a turbine. Power generation equipment.   The top surface of the bottom locking projection and the bottom peripheral edge of the oil tank that is in contact with the bottom locking projection are polished. The turbine power generation facility according to claim 1. Power generation equipment is mounted, which also serves as a transportation platform, and constitutes a turbine power generation facility,
A gantry frame configured in a frame shape;
An oil tank configured separately from the gantry frame and housed in the gantry frame;
A flange formed to protrude outward along the edge of the upper end of the oil tank;
A locking groove that is formed along the upper surface inside part of the gantry frame, locks the flange, and supports the upper part of the oil tank so as to be movable by thermal expansion and contraction,
A bottom locking protrusion formed at the lower end of the gantry frame so as to protrude inwardly, locking the bottom peripheral edge of the oil tank and supporting the lower portion of the oil tank movably by thermal expansion and contraction; A gantry characterized by comprising: A projecting portion provided at the center of each side of the oil tank top of the rectangular parallelepiped shape and formed to protrude further outward from the flange;
The pedestal according to claim 8, further comprising a fitting groove formed to extend further outward from the locking groove and into which the protrusion is fitted. Between the outer side wall part of the oil tank and the inner side wall part of the gantry frame, between the outer edge part of the flange part and the outer edge part of the locking groove, and the outer edge part of the protrusion part and the fitting The gantry according to claim 9, wherein a gap for allowing thermal expansion of the oil tank is provided between each outer edge of the groove.

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