JPH0630691U - Wedge for plate heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a wedge that can reliably prevent upward movement of a moving frame of a plate heat exchanger. [Structure] A wedge press-fitted between the bottom of the cutout portion of the moving frame of the plate heat exchanger and the lower surface of the guide bar,
Make it steel and attach a magnet sheet to prevent the wedge from falling off on the surface of the steel wedge that comes into contact with the guide bar, or remove the wedge at the rear of the surface of the steel wedge on the moving frame side. Form a recess or protrusion that engages the end of the extraction rod of
Alternatively, a tab is formed at the rear portion of the surface of the steel wedge on the side of the moving frame, and a notch is formed on this tab to be fitted with a bolt for fixing the wedge protruding from directly below the notch of the moving frame. It was done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wedge press-fitted between a moving frame and a guide bar to prevent the moving frame of a plate heat exchanger from moving upward after tightening the plate.

[0002]

[Prior art]

 In general, the plate heat exchanger (10) has a corrugated plate-shaped heat transfer surface (2) as shown in FIG. 11, and has holes (3) (3) (3) (3) (3) ) Are stacked alternately with the gaskets (4) and (4), and the first flow path (A) is placed between the plates (1) and (1 '). And the second flow path (B) are alternately formed to perform heat exchange between the two types of media.

Further, in order to hold the plates (1) and (1 ′) in a laminated state, as shown in FIG. 10, the guide bars (11a) and (11b) are fixed to the fixed frame (12) and the support legs (13). The guide bar (11a) (11b) bridges the space between the movable frame (14) and the fixed frame (12) so that the movable frame (14) is slidably supported.

Next, a plurality of plates (1) (1 ') and gaskets (4) (4) are alternately arranged between the fixed frame (12) and the moving frame (14), and By engaging the notch parts (5) (5) provided at the center of both ends of each plate (1) (1 ') with the guide bars (11a) (11b), each plate (1) Hold (1 ') between fixed frame (12) and moving frame (14).

In this state, a plurality of long bolts (15) are inserted between the fixed frame (12) and the moving frame (14), and the screw parts at the tips of the bolts (15) are inserted. By tightening the nuts (16) and tightening them, the plates (1) and (1 ') stacked between the fixed frame (12) and the moving frame (14) via the gasket (4) can be used. Hold in between.

Further, the fixed frame (12) communicates with the first inflow hole (17) communicating with the first flow path (A), the first discharge hole (18), and the second flow path (B). A second inflow hole (19) and a second discharge hole (20) are provided.

Then, there are two types of first flow holes (17) and second flow holes (19) provided in the fixed frame (12) toward the first flow path (A) and the second flow path (B). By supplying the medium, heat is exchanged between the first medium and the second medium via each plate (1) (1 ').

[0008]

[Problems to be solved by the device]

 The moving frame (14) of the plate heat exchanger (10) is suspended and supported by the guide bar (11a) by the following method.

That is, as shown in FIG. 8, the moving frame is provided with a notch portion (25) formed by opening the upper end and surrounding both sides and the bottom portion of the guide bar (11a) with a predetermined gap. A roller (26) which is provided at the center of the upper end of (14) and which is in contact with the upper surface of the guide bar (11a) is rotatably supported at the upper end opening of the notch (25).

Then, the notch (25) is fitted to the guide bar (11a), and the roller (26) is brought into contact with the upper surface of the guide bar (11a) to move the moving frame (14) to the guide bar (11a). 11) It is slidably supported on a).

In addition, a notch (not shown) that engages with the guide bar (11b) is provided in the center of the lower end of the moving frame (14), and the moving frame (14) when the moving frame (14) slides ( 1 4) It is designed to serve as a lower guide.

By the way, as shown in FIG. 8, between the bottom portion (25a) of the cutout portion (25) of the moving frame (14) and the lower surface (11a ′) of the guide bar (11a), as shown in FIG. L) is provided so that the notch (25) can be engaged with the guide bar (11a) and the moving frame (14) can be smoothly moved on the guide bar (11a). .

However, when a gap (L) is formed between the bottom portion (25a) of the cutout portion (25) and the lower surface (11a ′) of the guide bar (11a), the plate heat exchanger (20) The moving frame (14) moves upward during moving or in use, or when tightening the laminated plates (1) (1 ') between the fixed frame (12) and the moving frame (14). However, there is a problem that the plates (1) and (1 ') near the moving frame (14) may be displaced due to this movement, causing liquid leakage.

That is, when moving the plate heat exchanger (10), a wire or the like is passed through the hanging holes (27) (27) formed in the moving frame (14) to lift the plate heat exchanger (10). However, at this time, the moving frame (14) may move upward.

Therefore, conventionally, when the plate heat exchanger (10) is moved, the gap (L) between the bottom portion (25a) of the cutout portion (25) and the lower surface (11a ′) of the guide bar (11a) is changed. In this method, the wedge (28) itself is deformed by the weight of the plate heat exchanger (10) at the time of lifting, and the moving frame (10) is driven. There was a problem that it could not be surely prevented from moving upwards.

Even when the plate heat exchanger (10) is mounted on a ship or the like, the moving frame (14) may move upward due to the vibration applied to the plate heat exchanger (10).

Further, when tightening the plates (1) (1 ′) by the fixed frame (12) and the moving frame (14), tighten so that the moving frame (14) moves parallel to the fixed frame (12). However, when the plate heat exchanger (10) is disassembled and reassembled at the customer's maintenance, etc., if the lower part of the moving frame (14) moves first, the moving frame (14) rises above it. In some cases, the moving frame (14) was lifted upwards as it was tightened, causing liquid leakage.

[0018]

[Means for Solving the Problems]

 The movable frame is suspended and supported by a guide bar installed between the fixed frame and the support leg facing each other so as to be movable in the axial direction, and a plurality of plates are provided with gaskets between the fixed frame and the movable frame. A plate type heat exchanger in which the first flow path and the second flow path are alternately arranged, and both longitudinal edges of the fixed frame and the moving frame are fastened and fixed by a plurality of tightening bolts and tightening nuts. In the exchanger,

A guide bar is provided at the center of the upper end of the moving frame, and is press-fitted between the bottom of a notch having a roller that is in contact with the top of the guide bar at the top and the bottom of the guide bar. , The wedge for preventing upward movement of the moving frame is made of steel,

Attach a magnet sheet for preventing the wedge from coming off to the surface of the steel wedge that contacts the guide bar, or

A concave portion or a convex portion that engages with the end portion of the wedge pulling-out rod is formed at the rear portion of the surface of the steel wedge on the moving frame side, or

Alternatively, a tab is formed on the rear portion of the surface of the wedge made of steel on the side of the moving frame, and this tab is fitted with a bolt for fixing the wedge protruding from directly below the notch of the moving frame. A notch is formed.

[0023]

[Action]

 As described above, the wedge that is press-fitted between the bottom of the cutout portion of the moving frame and the lower surface of the guide bar is made of steel, and the magnet sheet is attached to the wedge, or the recess or protrusion is formed on the wedge. By forming tabs on the movable frame or forming tabs on the wedge, the movable frame is prevented from moving upward, the wedge is prevented from falling off, and the wedge is easily removed.

[0024]

EXAMPLE FIG. 1 shows a wedge which is the basis of the present invention. This wedge (30) has a one-sided slope, in which only one side surface is an inclined surface (30a) and the other side is a flat surface (30b). In addition, the wedge (30) is made of steel so as not to be deformed due to the weight of the plate heat exchanger (10) itself when it is used.

Then, as shown in FIG. 2, the wedge (30) made of steel is attached to the bottom portion (25a) of the cutout portion (25) of the moving frame (14) and the lower surface (11a ') of the guide bar (11a). For example, when the plate heat exchanger (10) is lifted and moved, the wedge (30) is not deformed by the weight of the plate heat exchanger (10), and thus the moving frame ( It is possible to reliably prevent 14) from moving due to movement of the plate heat exchanger (10).

FIG. 3 shows a second embodiment of the steel wedge according to the present invention. This wedge (40) has a bottom portion (25a) of the cutout portion (25) of the moving frame (14). ) And the lower surface (11a ') of the guide bar (11a), the wedge (40) is prevented from coming off when it is pressed in, even if the wedge (40) loosens. The magnet sheet (41) is attached to the flat surface (40b) of the wedge (40) that contacts the guide bar (11a).

In the figure, (40a) is an inclined surface.

FIGS. 4 and 5 show third and fourth embodiments of steel wedges, and the wedges (50) and (60) are both cutout portions of the moving frame (14). This is for facilitating the withdrawal work after the wedge is press-fitted between the bottom portion (25a) of the (25) and the lower surface (11a ') of the guide bar (11a).

The wedge (50) shown in FIG. 4 has a recess (51) formed in the rear portion of the inclined surface (50a) of the wedge (50), and the wedge (60) shown in FIG. The convex portion (61) is formed at the rear end of the inclined surface (60a) of the (60).

As described above, if the concave portions (51) or the convex portions (61) are formed on the inclined surfaces (50a) (60a) of the wedges (50) (60), the wedges (50) or (60 4) and 5) as shown by the chain double-dashed lines in FIG. 4 and FIG. 5, one end of the moving frame (14) has a recess (51) or a protrusion (61) at one end via a fulcrum (70). If the extraction rod (71) that engages with is arranged, and the other end of this extraction rod (71) is hit with a hammer, the wedge (50) or (60) will move to the moving frame (14) and the guide bar (11a). It is possible to easily pull out from between.

FIG. 6 shows a fifth embodiment of the steel wedge according to the present invention. This wedge (80) is a fixed frame (of the stacked plates (1) (1 ′)). This is for minimizing the upward movement of the moving frame (14) during tightening with the moving frame (14) and the moving frame (14).

That is, a tab (81) extending toward the moving frame (14) is provided at the rear end of the inclined surface (80a) of the wedge (80), and the tab (81) is provided on the moving frame (14). A notch (83) through which a bolt (82) vertically protruding from directly below the notch (25) is provided.

When the moving frame (14) is tightened, the bolt (82) is fitted into the notch (83) provided in the tab (81) of the wedge (80), and the bolt (82) is screwed. The tabs (81) are integrated with the bolts (82) with the fitted nuts (84) (84), so that the wedges (80 ) Is positioned so that the gap between the bottom (25a) of the notch (25) and the lower surface (11a ') of the guide bar (11a) is set to the minimum required to move the moving frame (14). This value minimizes the upward movement of the moving frame (14) when tightening the plate by the moving frame (14).

Further, in this case, a bottom friction resin sheet of tetrafluoroethylene or the like is formed on the flat surface (80b) which is a sliding surface facing the lower surface (11a ′) of the guide bar (11a) of the wedge (80). You may attach (85).

In each of the above-mentioned embodiments, an example of a one-sided gradient in which the inclined surface of the wedge is only one surface has been described. However, the wedge used in each of the above-described embodiments has an inclined surface ( It is also possible to use a double sloped wedge (90) which has become 90a) (90a).

[0036]

[Effect of device]

 As described above, according to the present invention, the wedge press-fitted between the bottom of the cutout portion of the moving frame of the plate heat exchanger and the lower surface of the guide bar is made of steel,

A magnetic sheet for preventing the wedge from falling is attached to the surface of the steel wedge that comes into contact with the guide bar, or the wedge is removed from the rear portion of the surface of the steel wedge on the moving frame side. Forming a recess or protrusion that engages the end of the pulling rod for use in the work, or forming a tab at the rear of the surface of the steel wedge on the moving frame side, and attaching this tab to the moving frame. It is formed with a notch that fits with a bolt for fixing a wedge that protrudes from directly below the notch.

As described above, the wedge is made of steel to prevent deformation when the wedge is used, and the magnet sheet is attached to the wedge to prevent the wedge from coming off the plate heat exchanger. The wedges are provided with concave portions or convex portions to prevent the wedges from being pulled out easily.

Further, by forming a tab for fixing to the moving frame on the wedge so that the wedge can be fixed to the moving frame, the moving frame moves upward during plate tightening work by the moving frame. To prevent this.

[Brief description of drawings]

FIG. 1 is a perspective view showing a basic shape of a wedge according to the present invention.

FIG. 2 is a partial cross-sectional view showing a usage state of the wedge according to the present invention.

FIG. 3 is a perspective view showing a second embodiment of the wedge according to the present invention.

FIG. 4 is a partial cross-sectional view showing a third embodiment of the wedge according to the present invention.

FIG. 5 is a partial sectional view showing a wedge according to a fourth embodiment of the present invention.

FIG. 6 is a partial sectional view showing a fifth embodiment of the wedge according to the present invention.

FIG. 7 is a perspective view showing another shape of the wedge according to the present invention.

FIG. 8 is a cross-sectional view showing a relationship between a guide bar and a cutout portion provided in a moving frame.

FIG. 9 is a cross-sectional view showing a relationship between a guide bar and a cutout portion provided in a moving frame.

FIG. 10 is a side view showing an example of a plate heat exchanger.

FIG. 11 is a perspective view showing a plate configuration of a plate heat exchanger.

[Explanation of symbols]

 1 plate 1'plate 4 gasket 10 plate type heat exchanger 11a guide bar 11b guide bar 12 fixed frame 13 support leg 14 moving frame 15 tightening bolt 16 tightening nut 25 notch 25a notch bottom 26 roller 30 wedge 40 wedge 41 magnet sheet 50 wedge 51 concave portion 60 wedge 61 convex portion 70 fulcrum 71 extraction rod 80 wedge 81 tab 82 bolt 83 notch

Claims (4)

[Scope of utility model registration request] 1. A guide bar provided between a fixed frame and a support leg facing each other suspends and supports a movable frame in an axial direction so that a plurality of sheets are provided between the fixed frame and the movable frame. The plates were laminated via a gasket, the first flow path and the second flow path were arranged alternately, and both longitudinal edges of the fixed frame and the moving frame were fastened and fixed by a plurality of tightening bolts and tightening nuts. In a plate heat exchanger, the bottom of the notch, which is provided at the center of the upper end of the moving frame, has a roller through which the guide bar penetrates and contacts the upper surface of the guide bar, and the lower surface of the guide bar. A wedge for a plate heat exchanger, characterized in that a wedge for preventing upward movement of the moving frame, which is press-fitted between and, is made of steel. 2. The wedge for a plate heat exchanger according to claim 1, wherein a magnet sheet for preventing the wedge from coming off is attached to a surface of the steel wedge that comes into contact with the guide bar. 3. The plate according to claim 1, wherein a concave portion or a convex portion that engages with an end portion of the extraction rod for removing the wedge is formed in the rear portion of the surface of the steel wedge on the moving frame side. Type heat exchanger wedge. 4. A tab formed on the rear portion of the surface of the steel wedge on the side of the moving frame, and a tab for fitting with a bolt for fixing the wedge protruding from directly below the notch of the moving frame. The wedge for a plate heat exchanger according to claim 1, wherein a notch is formed.