JPH085009A - Condensed water recovering device - Google Patents

Abstract

PURPOSE:To obtain a condensed water recovering device, capable of sucking condensed water, generated in a steam employing device, surely without staying it. CONSTITUTION:A steam supplying tube 5 for supplying steam to a steam employing device 17 is connected to the device 17. The steam employing device 17 is connected to the inflow port 34 of a condensed water recovering device 2 through a passage 3. The steam supplying tube 5 is branched to connect the branch to the introducing port 38 of the condensed water recovering device 2. A circulation port 39 is connected to a steam ejector 1. The suction chamber 6 of the steam ejector 1 is connected to a steam tube 8, branched from the steam supplying tube 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensate recovery device for sending condensate generated in a steam using device or the like to a boiler or a waste heat utilizing device. Condensate condensed by the steam-using device is discharged by the steam trap, but since this condensate is usually high in temperature and has a lot of heat energy, this condensate has conventionally been used as a boiler or waste heat utilization device. Has been collected.

[0002]

2. Description of the Related Art As a conventional condensate recovery device, for example, a device as disclosed in Japanese Patent Laid-Open No. 5-71698 has been used. This is to provide a condensate reservoir with a condensate inlet and a return port, a high-pressure operating fluid inlet and a circulation port, and a float that floats and descends according to the condensate water level. The condensate is pumped and collected by opening and closing the inlet and the circulation port of the high-pressure operating fluid according to the vertical movement of the float.

[0003]

The above-mentioned conventional device has a problem that the condensed water generated in the steam using device cannot be surely sucked and the condensed water is retained in the steam using device. If the steam use pressure is low and there is almost no difference from the atmospheric pressure, or if it is not possible to provide a standoff between the steam use device and the condensate reservoir, the condensate generated by the steam use device It cannot flow down into the condensate reservoir and stays there.

Therefore, a technical problem of the present invention is to obtain a condensate recovery device which can surely suck the condensate generated in a steam using device or the like and which does not retain the condensate. .

[0005]

[Means for Solving the Problems] The technical means of the present invention taken to solve the above technical problems is a condensate reservoir provided with a condensate inlet and a return port, and a condensate reservoir for the condensate reservoir. A high-pressure operating fluid inlet and a circulation port are formed, and a float means that floats and descends along with the water level is arranged, and the high-pressure operating fluid inlet and the circulation port are connected according to the movement of the float means. A vacuum suction means is connected to the circulation port of the high-pressure operating fluid in the case where the condensate is pumped and collected by opening and closing.

[0006]

The operation of the above technical means is as follows.
By connecting the vacuum suction means to the circulation port of the high-pressure operating fluid, the condensate reservoir container and the vacuum suction means communicate with each other when the circulation port is opened, and the condensate reservoir container is in a vacuum state below atmospheric pressure by the vacuum suction means. Can be By making the inside of the condensate reservoir vacuum, the steam use pressure is low and there is almost no difference from the atmospheric pressure, or it is not possible to provide a fall part between the steam using device and the condensate reservoir. However, the condensate generated in the steam-using device can surely flow down into the condensate reservoir.

[0007]

EXAMPLE An example showing a concrete example of the above technical means will be described (see FIGS. 1 and 2). In this embodiment, the steam ejector 1 is used as the vacuum suction means. As shown in FIG. 1, in the condensate water recovery device 2, the condensate water inlet 34 is connected to the reaction vessel 17 as a steam using device through the passage 3 and the check valve 15, and the reduction port 35 is connected to the passage 4 and the reverse valve. The stop valve 16 is used to connect to a not-shown condensate recovery destination, the high-pressure operating fluid inlet 38 is connected to the steam supply pipe 5, and the circulation port 39 is connected to the steam ejector 1.

The steam ejector 1 is composed of a nozzle (not shown) arranged inside the suction port 6 and a diffuser 7 connected to the outlet side of the suction port 6. The diffuser 7 reuses the passed vapor again. It is not always necessary depending on the place to do. The suction port 6 is connected to a steam pipe 8 branched from the steam supply pipe 5 via a valve 9. By causing steam to flow down through the nozzle in the suction port 6, a vacuum suction force is generated in the suction port 6 part. Further, the steam supply pipe 5 is connected to the jacket portion 10 of the reaction kettle 17 via the pressure control valve 11 and the valve 12.

FIG. 2 shows the details of the condensate recovery device 2. In the condensate recovery device 2, a lid 32 is attached to a main body 31 with a bolt (not shown) to form a condensate storage chamber 33 inside. Body 3
1, the lid body 32, and the condensate reservoir chamber 33 constitute a condensate reservoir container. A condensate inlet 34 communicating with the condensate reservoir chamber 33 is formed in the upper part of the main body 31, and a return port 35 for returning the condensate to a recovery destination is formed in the lower part. Inflow port 34 and return port 35
Respectively connect the passages 3 and 4 in FIG. An inlet 38 for the high-pressure operating fluid is formed in the lid 32, and a circulation port 39 is formed on the back side of the inlet 38. The circulation port 39 and the steam ejector 1 in FIG. 1 are connected. The inlet port 38 communicates with the condensate reservoir chamber 33 via an air supply valve 50, and the circulation port 39 passes through an exhaust valve 51 (not shown) arranged substantially parallel to the back side of the air inlet valve 50 to condense water reservoir chamber 33. Communicate with. Air supply valve 50
Since the exhaust valve 51 and the exhaust valve 51 are connected to the slide rod 53, when the slide rod 53 is displaced upward, the air supply valve 50 is opened and the exhaust valve 51 is closed, and when the slide rod 53 is displaced downward, the air supply valve 50 is supplied. The air valve 50 is closed and the exhaust valve 51 is opened. Slide rings 55 for supporting the vertical movement of the slide rod 53 are provided on both sides of the slide rod 53.

A closed float 56 that floats and descends with the water level is housed in the condensate storage chamber 33. A lever 57 is attached to the float 56, and the connecting member 58 and the valve rod 59 of the valve body 60 are pin-connected to the lever 57. Lever 57 is pin 61
It rotates with the float 56 descending and descending around the center.
An auxiliary lever 64 is connected to the end of the lever 57 via a pin 63. The other end of the auxiliary lever 64 is rotatably attached by a pin 65 attached to the lid 32. Connecting member 5
One end of 8 is connected to the slide rod 53 by a pin 62, and the other end is connected to an auxiliary lever 64 by a pin 66. A compressed coil spring 67 is arranged at the center of the connecting member 58.

When the condensate flows into the condensate reservoir 33, the float 56 rises and the lever 57 rotates about the pin 61. In this case, the pin 66 is displaced downward and the coil spring 67 is further compressed. When the pin 66 is displaced further downward and positioned slightly below the position of the pin 62, the compressive force of the coil spring 67 acts on the pin 62 and the slide rod 53
Is pushed all the way up. When the slide rod 53 is located above, the air supply valve 50 opens, high-pressure steam flows into the condensate reservoir chamber 33 from the steam supply pipe 5, and an exhaust valve provided in parallel to the back side of the air supply valve 50. 51 is closed to prevent the discharge of high-pressure steam, the condensate in the condensate reservoir chamber 33 is returned to the return port 3
It is pumped to the condensate recovery destination through 5 and the pipe 14.

When the condensate is recovered and the water level in the condensate reservoir chamber 33 drops, the float 56 descends as shown in FIG.
The air supply valve 50 is closed and the exhaust valve 51 is opened, so that the condensate reservoir chamber 33 and the steam ejector 1 communicate with each other. When the high-pressure steam passes through the steam ejector 1 in FIG. 1, a vacuum suction force is generated in the suction chamber 6 to suck the high-pressure steam in the condensate pool chamber 33, so that the condensate pool chamber 33 is in a vacuum state. Since the inside of the condensed water chamber 33 is in a vacuum state, the reaction vessel 1
Condensate generated in the jacket portion 10 of No. 7 is reliably transferred into the condensate reservoir chamber 33 through the passage 3, the check valve 15 and the inflow port 34 even if the pressure is low and there is almost no falling portion. Can be drained to.

[0013]

As described above, according to the present invention, the inside of the condensate reservoir can be brought to a predetermined vacuum state by the vacuum suction means, and the condensate can be surely flowed down into the condensate reservoir to recover the condensate. It does not stay.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of use of a condensate water recovery device of the present invention.

FIG. 2 is a partial cross-sectional view of the condensate water recovery device of the present invention.

[Explanation of symbols]

 1 Steam Ejector 2 Condensate Recovery Device 5 Steam Supply Pipe 6 Suction Port 7 Diffuser 10 Jacket 17 Reactor 34 34 Inlet 35 Reduction Port 38 Inlet 39 Circulation Port

Claims (1)

[Claims] 1. A condensate reservoir having a condensate inlet and a condensate inlet, and a float means for forming an inlet and a circulation port for a high-pressure operating fluid in the condensate reservoir and for ascending and descending with the water level. In order to collect and condense condensed water by opening and closing the inlet and the circulation port of the high pressure operating fluid according to the movement of the float means, a vacuum suction means is provided at the circulation port of the high pressure operating fluid. Condensate recovery device characterized by being connected.