JP2975525B2 - Condensate discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensate discharge device,
More specifically, for example, a condensate discharge device for removing a part of the condensate, that is, a drain, by attaching to a steam transfer pipe such as a steam pipe or a steam apparatus such as a heat exchanger or a dryer air conditioner. About.

[0002]

2. Description of the Related Art Conventionally, this type of condensate discharge device has been disclosed in Japanese Patent Application Laid-Open No. Sho 54-161121,
The techniques disclosed in Japanese Patent Publication No. 098 and Japanese Utility Model Publication No. 60-37515 are known. The condensate discharge device discussed here is used to remove the condensate from the device while minimizing the leakage of steam in various devices that use steam as a heat source, such as a heat exchanger, a dryer, and a cooling and heating device. It is used for

A conventional condensate discharge device used for such a purpose is generally constituted by a main body having an orifice provided in the middle of an internal condensate passage. Such a body is attached to a steam heating device and used as a condensate discharge device. At that time, the drain or condensate is discharged out of the equipment through the orifice due to the differential pressure.

[0004]

However, since the conventional condensate discharge device is designed and manufactured with an orifice diameter corresponding to the expected drain discharge flow rate, the orifice diameter is reduced when the discharge flow rate is reduced. Must be rebuilt.

The drain passing through the orifice of the condensate discharge device is so-called boiler water (boiler water) whose quality is adjusted.
However, depending on the type of the metal powder, rust, dust, scale, etc., or the type of cleaning can, chemicals dissolved in the can water accompany the drain. As a result, the deposits may accumulate around the orifice and obstruct the drain flow. When the precipitates accumulate in the vicinity of the orifice, the diameter of the orifice is substantially reduced, and as a result, there is a disadvantage that the ability to discharge the condensate is reduced.

An object of the present invention is to solve such a conventional problem, and it is possible to easily change an orifice diameter according to a change in flow rate, or to simplify such an orifice diameter. It is another object of the present invention to provide a condensate discharge device capable of maintaining initial performance by eliminating clogging of an orifice due to a precipitate in a short time together with a major change.

[0007]

SUMMARY OF THE INVENTION The present invention is a condensed liquid discharging device, and is configured as follows to solve the above-mentioned technical problem. That is, the condensate discharge device of the present invention is attached to a device that generates condensate, a trap body having a passage for discharging the condensate, and at least a trap body formed across the passage in the trap body. 1
Three pin mounting holes, a pin removably disposed in the pin mounting hole, and an orifice formed in the pin and formed at a position corresponding to the passage when the pin is inserted into the pin mounting hole. It is characterized by comprising. Hereinafter, each component requirement will be described.

(Trap body) The trap body is a distillation column,
Attached to a device that generates condensate such as a heat exchanger. Various means such as a screw type, a flange type, or a welding type can be used for attaching the trap body to the condensate generation device. A passage for discharging condensed liquid is provided in the trap body through the body.

(Pin mounting hole) The pin mounting hole is provided in the trap body. Further, this pin mounting hole is formed across the aforementioned passage. The pin mounting hole is open at least on one side of the trap body. Of course, the pin mounting hole may be formed through the trap body. In short, it is important that a pin to be described later can be inserted into and removed from the pin mounting hole.

A (pin) pin is used by being inserted into the above-mentioned pin mounting hole. Since this pin is non-rotatable with respect to the trap body, its sectional shape is basically not limited.

The (orifice) pin is provided with an orifice. The orifice is formed to penetrate to a position corresponding to a passage provided in the trap body when the pin is inserted and attached to the pin mounting hole of the trap body.

<Additional Configuration in the Present Invention> The condensate discharge device of the present invention comprises the above-mentioned essential components.
This is true even if the components are specifically as follows. The additional component is positioned such that when the pin is inserted into the pin mounting hole of the trap body, the orifice formed in the pin communicates with the passage traversing the mounting hole. Means for positioning as described above.

[0013]

According to the condensate discharge device of the present invention, the pin having the orifice is inserted into the pin mounting hole which crosses the passage formed in the trap body. The pin is positioned where the orifice formed therein matches the passage in the trap body.

The trap body in such a condensate discharge device is previously attached to the condensate generation device by known means. As a result, the drain generated in the condensate generator passes through the orifice through the passage of the trap body,
It is discharged outside the device. Since this pin is detachable from the pin mounting hole of the trap body, it can be easily replaced with a pin having an orifice having a different diameter as required.

By the way, when the pin having the orifice formed therein is inserted into the pin mounting hole of the trap body, the positioning of the orifice in the direction crossing the passage can be determined in advance by design, which hinders the discharge of the condensate. Although the displacement does not occur so much as to come out, if the pin is a cylindrical body, there is a possibility that the openings at both ends of the orifice may come off from the passage due to the rotational displacement when the pin is inserted into the mounting hole.

Such a rotational deviation cannot be determined from outside the trap body. So, if the pin is a cylinder,
An indicator indicating the direction of the orifice is designed so that the direction of the orifice can be recognized from the outside at the time of insertion by marking the end of the pin or forming the end of the pin in a special shape. Therefore, a person who inserts the pin into the mounting hole can adjust and mount both orifices so as to be positioned on the passage while viewing the display portion.

Further, in the condensate discharge device of the present invention, even if metal powder, rust, dust, or deposits accompanying the drain adhere to the orifice opening, the pin is easily taken out and the orifice is cleaned. Since the recovery can be performed in a short time, the flow of the drain is less hindered.

In the condensate discharge device of the present invention,
A straight pin can be used as a pin attached to a pin mounting hole formed in the trap body. However, it is preferable to use tapered pins to completely prevent leakage of steam. With this taper pin,
The peripheral surface of the pin and the inner peripheral surface of the mounting hole are completely adhered to or separated from each other by slight relative axial movement of both, so not only complete prevention of steam leakage, but also its attachment and detachment is very easy. Become.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a condensate discharging apparatus according to the present invention. FIG. 1 shows a condensate discharge device 10 according to a first embodiment of the present invention. The condensate discharge device 10 according to the first embodiment includes a trap body 11 of a welding type. As is clear from the side view of FIG. 2 and the front view of FIG. 3, the trap body 11 is formed of a hexagonal column-shaped steel material, and the left and right ends thereof are partially circular. The welding-type trap body refers to a type in which the left end face of the trap body 11 is welded to a condensate generator (not shown) such as a distillation tower or a heat exchanger.

A drain discharge passage 12 is formed in the hexagonal prism-shaped trap body 11 so as to extend through the trap body 11 on the central axis in the longitudinal direction. Further, the trap main body 11 is provided with two pin mounting holes (hereinafter, simply referred to as mounting holes) 13 and 14 having a circular cross section orthogonal to and traversing the passage 12 and also passing through the trap main body 11. ing.

Each of the mounting holes 13 and 14 has an inner peripheral surface tapered in the longitudinal axis direction. That is, each of the mounting holes 13 and 14 is formed by gradually decreasing the diameter from the upper portion to the lower portion as viewed in FIG. The mounting holes 13 and 14 have orifice 1
The pin 16 formed with 5 is inserted. Therefore, this pin 16 is a tapered pin that matches the inner peripheral surfaces of the mounting holes 13 and 14. Therefore, this pin 16 is hereinafter referred to as a tapered pin.

The orifice 15 is formed through the tapered pin 16 so as to be perpendicular to the longitudinal center axis of the pin. As is clear from FIG. 1, the orifice 15 is formed on the condensate inflow side of the pin, and the orifice opening on the outflow side is formed with a passage 15a having a diameter equal to or slightly smaller than that of the passage 12.

Further, as shown in FIG. 4, the tapered pin 16 has a threaded portion 16a formed on the outer peripheral surface of the small-diameter end, and a rectangular column having a rectangular cross section on the end surface of the large-diameter end. 16b is formed to extend in the central axis direction of the tapered pin 16. This rectangular column portion 16b having a rectangular cross section
Has its long side along the longitudinal axis of the orifice 15,
In other words, it is formed to be parallel and fit within a smaller area than the circular area of the end surface of the large diameter end of the tapered pin 16.

The prism 16b determines the opening direction of the orifice 15 by looking at the end of the tapered pin 16, and in that sense, the prism 16b has a function as a display unit. That is, the tapered pin 16 having the orifice 15 formed therein is inserted into the mounting hole 1 of the trap body 11.
The positioning of the orifice 15 in the direction transverse to the passage 12 (in the axial direction of the mounting hole) when inserting the orifice 15 into the holes 3 and 14 can be determined in advance by design, so that the displacement of the orifice 15 may be large enough to hinder the discharge of condensate. However, if the tapered pin 16 is a cylindrical body as in this embodiment, the openings at both ends of the orifice may be displaced from the passage 12 due to rotational displacement when the tapered pin 16 is inserted into the mounting hole.

Such a rotational deviation cannot be determined from outside the trap body 11. Therefore, a prism 16b is provided on the end surface of the tapered pin 16 formed of a cylindrical body as a portion for indicating the orientation of the orifice 15. Therefore, the person who inserts the taper pin 16 into the mounting holes 13 and 14 looks at the prism portion 16b which is the display portion, and
This is performed by confirming that both the openings 5 are aligned with the passage 12.

When the tapered pin 16 having the above configuration is inserted into the mounting holes 13 and 14 formed in the trap body 11,
In the axial direction, the outer peripheral surface of the tapered pin 16 is the mounting hole 1
Since it comes into contact with the inner peripheral surface of the taper 3 or 14, the insertion is stopped and positioning can be performed. Thus, the orifice 15 can be pre-designed to be on the passage 12 when the tapered pin 16 is inserted into the mounting holes 13, 14 and held in place.

At this time, the screw portion 16 a formed on the outer peripheral surface of the small-diameter end of the tapered pin 16 projects from the side surface of the trap body 11. In other words, the tapered pin 16 is formed to have such a length that the screw portion 16a formed on the outer peripheral surface of the small-diameter side end portion at the axial mounting position in the mounting holes 13 and 14 projects from the mounting hole. Thus, the trap body 1
A tightening cap nut 18 is screwed onto a threaded portion 16a of the tapered pin 16 protruding from the side surface of the tapered pin 16 with a gasket 17 interposed therebetween.

By tightening the cap nut 18, the taper pin 16 is strongly pulled toward the small-diameter end portion in the axial direction. As a result, the peripheral surface of the taper pin 16 comes into close contact with the entire inner peripheral surface of the mounting holes 13 and 14, and steam Of the taper pin 16 and the mounting holes 13 and 1 of the taper pin 16 can be completely prevented.
4 can be prevented from falling off. At this time, if the taper pin 16 rotates with the rotation of the cap nut 18, the orifice 15 may be angularly displaced with respect to the passage 12, and the openings at both ends of the orifice 15 may come off from the passage 12.

Therefore, the cap nut 18 is connected to the taper pin 16
When screwing into the small-diameter side end of the tapered pin 16, the prismatic portion 16b formed at the large-diameter side end of the tapered pin 16 is pinched and fixed using an appropriate tool such as a plier to prevent the occurrence of rotational displacement. Can be. Because of this, this prismatic part 16
b can function not only as a display portion but also as a grip portion when the tapered pin 16 is fixed to the mounting hole.

A blind bolt 19 is attached to the large-diameter end of each of the mounting holes 13 and 14 of the trap body 11 to which the taper pin 16 is firmly mounted as described above. That is, the screw portion 13 is provided on the inner peripheral surface on the large diameter side of the mounting holes 13 and 14.
a, 14a are formed, and the blind bolt 19 is provided with the screw portion 19a of the large diameter side inner peripheral surface screw portion 13a, 14a.
The opening of the mounting holes 13a and 14a that are exposed on the side surface of the trap body 11 can be closed.

At this time, a circular recess 19b for accommodating a prism portion 16b extending in the axial direction from the large-diameter end surface of the tapered pin 16 is formed on the screw shaft side end surface of the blind bolt 16. Since the diameter of the recess 19b is larger than the length of the long side of the prism 16b, the blind bolt 1
When the screw 6 is screwed into the openings of the mounting holes 13 and 14, the rotation thereof is not hindered by the prism 16b. The gasket 20 is interposed between the blind bolt 16 and the side surface of the trap body 11 when the blind bolt 16 is mounted.

Next, the condensate discharge operation of the condensate discharge device 10 according to the above-described embodiment will be described. The drain generated in the condensate generation device is trapped by the trap body 1 by the differential pressure.
1 through passage 12 from which the first orifice 15
(Orifice 15 of pin 16 provided in mounting hole 13)
Pass through. The amount of drain flowing at this time is a flow rate corresponding to the opening area of the orifice.

The drain having passed through the first orifice 15 is the second orifice (not shown in FIG. 1,
Before entering the orifice of the pin provided in the mounting hole 14, a proportion of the drain corresponding to the pressure drop evaporates again. 2
When the gas enters the orifice of the second stage, the mixture becomes a mixture of drain and steam and the whole volume expands. Therefore, the gas passes through the orifice of the second stage while the flow is slightly hindered.

As is well known, there is a difference of several hundred times in volume between drain and steam for the same mass. In other words, a normal amount of drain passes, but the steam becomes difficult to flow. The condensate discharge device of this embodiment makes use of this phenomenon to minimize the leakage of steam.

As described above, the condensate discharge device 10 of this embodiment is
According to this method, the pin 16 having the orifice formed therein can be easily removed from the trap body 11, so that the pin 16 having an optimal orifice can be replaced depending on the flow rate condition. Further, as shown in FIG. 5, a taper pin 22 having a passage 21 having the same diameter as the passage 12 is attached to the mounting hole 14 on the downstream side.
, And only one orifice 15 can be installed on the passage of the trap body 11.

In this case, as with the tapered pin 16 having the orifice, the threaded portion 22a is formed on the outer peripheral surface of the small-diameter end, and the vertical cross-section is formed on the end surface of the large-diameter end. Rectangular prism 22b
Are formed.

Further, in this embodiment, two pin mounting holes 13 and 14 are formed in the trap body 11 so that two orifices can be provided on the passage 12. However, depending on the condition of the differential pressure, it is needless to say that the orifice may be further provided. It goes without saying that it can be increased or vice versa.

Furthermore, according to the condensate discharge device 10 of the present embodiment, the drainage accompanied by the metal powder, rust, dust, scale, etc., or the precipitates of the chemicals dissolved in the can water depending on the type of the cleaning agent. Even when the orifice is clogged, the cap nut 18 and the blind bolt 19 are removed, and the tapered pin 16 can be easily attached and detached by tapping the small-diameter side end of the tapered pin 16 after cleaning the orifice. It is possible to recover in a short time.

FIG. 6 shows a condensate discharge device 30 according to a second embodiment of the present invention. In the condensate discharge device 30 of the second embodiment, three pin mounting holes 32, 33, and 34 are formed in the trap body 31, and the three pin mounting holes 32, 33, and 34 each have a diameter in the axial direction. It is a complete straight hole that does not change in. Therefore, the pins that are inserted into these mounting holes 32, 33, 34 and attached are straight pins 35. Orifices are also formed on these straight pins 35 as in the above-described embodiment.

This straight pin 35 is actually
It can be considered that an orifice is formed on a hexagonal bolt as shown in FIG. 7, and an arrow 36 indicating the direction of the orifice is formed as a display portion on the upper surface of the head as shown in FIG. The condensate discharge device 30 of this embodiment is substantially the same as the condensate discharge device 10 of the embodiment shown in FIG. 1 except for the configuration described above, and thus the same or corresponding portions have the same reference characters. And further description is omitted.

By the way, in the condensate discharge device 10 according to the first embodiment of the present invention, when it is necessary to provide a display portion for indicating the direction of the orifice on the pin, the function as a grip portion at the time of attaching the pin is provided. When unnecessary, a simple symbol such as the arrow 36 may be displayed on the pin end face as in the second embodiment.

In the first and second embodiments, when the taper pins 16 and 22 and the straight pin 35 are inserted into the mounting holes of the trap bodies 11 and 31, and fixed there,
When a pin and a trap body are provided on the pin and the trap body to prevent the rotation of the trap body in cooperation with the trap bodies 11 and 31, it is not possible to form the display section including the above-described prism portion. Required. Further, the cap nut 18 is used to fix the taper pin 16 or the straight pin 35 to the trap bodies 11 and 31. However, various methods are conventionally known for fixing the taper pin 16 or the straight pin 35. Is not limited to the cap nut 18.

Although the condensate discharge devices of the first and second embodiments have been described using the trap bodies 11, 31 made of hexagonal columnar steel, the present invention is not limited to this. Is not critical and can be of any shape and can be formed of a material having the required strength. .

Further, in these embodiments, the connection portions of the trap bodies 11 and 31 to the condensate generator are of a welding type and a flange type in consideration of other systems. A method is possible and does not affect functionality.

[0045]

As described above, according to the condensate discharge device of the present invention, the orifice is formed in the pin, and this pin is removably inserted into the pin mounting hole of the trap body, and the orifice is inserted into the trap body. Is located on the drain discharge passage, the optimum orifice can be arranged on the passage depending on the flow rate condition by replacing the pin.

Further, according to the condensate discharge device of the present invention,
When the pin is inserted into the pin mounting hole of the trap body, the display part that can confirm the direction of the orifice from the outside of the trap body is formed on the pin, so that the orifice is positioned on the passage formed in the trap body after the pin is mounted. It is possible to easily confirm whether or not the positioning is performed, and the orifice can be reliably and easily positioned on the passage when the pin is mounted.

According to the condensate discharge device of the present invention,
Clogging of the orifice due to foreign matter accompanying the drain can be easily eliminated in a short time, and as a result, initial performance can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a condensate discharge device according to a first embodiment of the present invention.

FIG. 2 is a side view of the condensate discharge device according to the first embodiment shown in FIG. 1 as viewed from the left.

FIG. 3 is a front view of the condensate discharge device according to the first embodiment shown in FIG. 1;

FIG. 4 is a perspective view showing a tapered pin with an orifice used in the condensate discharge device of the first embodiment shown in FIG. 1;

FIG. 5 is a perspective view of the condensate discharge device according to the first embodiment of the present invention, in which a taper pin having a flow path having the same diameter as the passage of the trap body is inserted into the right mounting hole.
It is sectional drawing which shows the example of a structure which installed only one orifice on the channel | path of a trap main body.

FIG. 6 is a partially cutaway front view showing a condensate discharge device according to a second embodiment of the present invention.

FIG. 7 is a plan view showing an upper part of a straight pin in the condensate discharge device according to the second embodiment shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Condensate discharge device of 1st Example 11 Trap main body 12 Passage 13 Pin mounting hole 14 Pin mounting hole 15 Orifice 15a Flow path 16 pin 16a Small diameter side end outer peripheral thread part 16b Display part 17 Gasket 18 Cap nut 19 Blind bolt REFERENCE SIGNS LIST 20 gasket 21 flow path 22 taper pin 22 a small-diameter side end outer peripheral thread portion 22 b display unit 30 condensate discharge device of second embodiment 31 trap body 32 pin mounting hole 33 pin mounting hole 34 pin mounting hole 35 straight pin

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tetsuya Ishii 9-4-5 Okudo, Katsushika-ku, Tokyo Inside Zet Engineering Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) F16T 1 / 00

Claims (2)

(57) [Claims] Claims: 1. A condensate generating device,
A trap body formed with a passage for discharging the condensed liquid, at least one pin mounting hole formed across the passage in the trap body, a pin detachably disposed in the pin mounting hole, And an orifice formed at a position corresponding to the passage when the pin is inserted into the pin mounting hole. And means for positioning the orifice formed in the pin to coincide with the passage traversing the pin mounting hole when the pin is inserted into the pin mounting hole of the trap body. The condensate discharge device according to claim 1, wherein