JPH0215521Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a distillation apparatus, and more particularly to a distillation apparatus equipped with a water leakage detection device for detecting water leakage in the distillation apparatus.

In a distillation apparatus, pure water is generally obtained by guiding steam generated in a boiler or the like as a steam generation device to a condenser, and cooling the steam in the condenser. In such a distillation apparatus, the various piping connections are completely sealed, but water sometimes leaks due to aging, poor sealing of the various connections, and other various causes. In such cases, there are problems in that the laboratory floor gets wet, the boiler sometimes runs dry, or there is a shortage of cooling water to the condenser.
However, in conventional distillation apparatuses, no measures were taken to deal with water leakage.

This invention was devised in view of the above-mentioned problems, and attempts to prevent accidents caused by water leaks by detecting water leaks from steam generators, condensers, various piping connections, etc. It is something.

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIG. 1 shows the overall structure of the distillation apparatus. As is clear from FIG. 1, as an example of a steam generator, a condenser 5 is disposed above a boiler 3 equipped with a heater 1 for generating steam. It's connected. The boiler 3 is supplied with primary treated water from a float outer cylinder 9 which is equipped with float switches 7a and 7b for detecting the upper and lower limits of the water level, and a supply pipe 11 is connected to the float outer cylinder 9. It has been done. Further, a discharge pipe 15 equipped with an on-off valve 13 such as a solenoid valve is connected to the bottom of the float outer cylinder 9, and an overflow pipe 17 is connected to the vicinity of the upper end. Furthermore, a tank 21 for primary treated water is connected to an appropriate position of the float outer cylinder 9 via a connecting pipe 19. The supply pipe 11 is connected to a raw water supply pipe 23, and this supply pipe 11 is provided with filters 25, 27 and an ion exchanger 29.

Therefore, water supplied to the float outer cylinder 9 passes through the filters 25 and 27 and the ion exchanger 29.
The boiler 3 is supplied with water after the primary treatment. A solenoid valve 31 is disposed in the supply pipe 11, and its opening and closing are controlled by the operation of the float switches 7a and 7b. That is, when the amount of water in the float outer cylinder 9 increases, the solenoid valve 31 is closed, and when it decreases, it is opened, and the water level in the boiler 3 connected to the float outer cylinder 9 is controlled so that it is always almost constant. It is something that exists.

A cooling pipe 33 connected to the condenser 5 is connected to the raw water supply pipe 23 in a branched manner. This cooling pipe 3
3 cools the steam in the condenser 5;
It is in communication with the discharge pipe 35. Therefore, the steam from the boiler 3 is condensed and obtained as pure water.

The condenser 5 is provided with a discharge port 35 for discharging volatile substances, and is connected to a pure water outlet pipe 37. This pure water take-out pipe 37 is connected to a frame 41 attached to the upper part of the pure water tank 39, and an overflow pipe 43 is further branched and connected to this pure water take-out pipe 37. This overflow pipe 43
is for discharging excess pure water when the level of pure water in the frame 41 rises too much.

The pure water outlet pipe 37 is provided on the upper side of the frame 41.
A supply port 45 is provided, and a discharge port 47 is provided at a lower position apart from the supply port 45. A discharge pipe 51 having an on-off valve 49 such as a solenoid valve is connected to the discharge port 47. Furthermore, the supply port 4 of the frame body 41
A communication port 53 is provided at an upper position apart from 5, and this communication port 53 communicates with the inside of the pure water tank 39 via a communication pipe 55. Further, a detection device 57 including electrodes 57a and 57b is attached to the upper part of the frame 41. This detection device 57
This method measures the purity of pure water by measuring the resistance value of pure water. The pure water tank 39 is provided with a float switch 59 that detects when the pure water is full and stops distillation, and the inside of the pure water tank 39 is connected to outside air through a filter 61. It is connected. Note that the tank 2
1 and pure water tank 39, respectively.
is connected.

The boiler 3, condenser 5, various piping, etc. are housed within a frame 65 having a sheet metal structure, for example. Note that a tank or the like may be provided outside the frame 65 if necessary. Near the bottom of the frame body 65, there is a shallow water leakage receiver 67 for receiving water leakage from various parts.
A water leak detection device 69 is provided at an appropriate position of the water leak receiver 67, preferably at the bottom. This water leakage detection device 69 has an aspect in which electrodes are disposed on the upper surface of a thin substrate, and when the electrodes become wet due to water leakage, current is applied between the electrodes to detect water leakage. Note that when the water leakage detection device 69 detects water leakage, the supply of raw water to the distillation apparatus is stopped and the distillation apparatus is completely stopped.

In the above configuration, when primary treated water is supplied to the boiler 3 and the heater 1 is heated, steam is generated. This steam is condensed in the condenser 5, becomes pure water, and flows into the frame 41 through the pure water outlet pipe 37. The pure water in the frame 41 flows into the pure water tank 39 through a direct pipe 55. In addition, the first
In the figure, the branch position of the overflow pipe 43 is slightly higher than the communication port 53 of the frame body 41, so that under normal conditions, pure water will not be discharged from the overflow pipe 43. As described above, when steam is continuously generated in the boiler 3, the amount of pure water in the pure water tank 39 gradually increases until it becomes full and the float switch 59 is activated.

When heating of the boiler 3 is stopped by actuation of the float switch 59, the condenser 5 is gradually cooled down, so that outside air flows into the condenser 5 from the discharge port 35. However, the communication port 53 in the frame body 41 is connected to the supply port 45 connected to the pure water extraction pipe 37.
Since it is located at a higher position, the pure water extraction pipe 37 and the frame 4
1 is filled with pure water up to the height of the communication port 53, and from the condenser 5 to the pure water tank 3.
This prevents the outside air from flowing into the tube 9.

When the amount of pure water in the pure water tank 39 becomes small and you want to reheat the boiler 3 to obtain pure water, first open the on-off valve 49 of the discharge pipe 51 to discharge the pure water in the frame 41 and condense it. The initial pure water flowing from the container 5 through the pure water take-out pipe 37 is discharged. Then, the detection device 57 detects the purity of the pure water flowing in from the pure water outlet pipe 37, and when the pure water reaches a predetermined purity or higher, the on-off valve 49 is closed.
Pure water is stored in the pure water tank 39 again.

When manufacturing a distillation device that supplies raw water to the boiler 3 as described above, if water leaks from the connections between various equipment such as the boiler 3 and various piping, the The leakage water is received by the wide water leakage receiver 67, and the leakage water does not directly flow out of the frame body 65.
When the water leakage is received by the water leakage receiver 67 and the water leakage detection device 69 detects the water leakage by getting wet,
The supply of raw water to the boiler 3 is stopped, and the distillation apparatus is completely stopped.

As can be understood from the explanation of the embodiments above, the gist of this invention is that the structure is as described in the claims for utility model registration, so water leakage from various equipment and piping connections in the distillation apparatus is prevented. When a water leak occurs, it is detected and the system is completely shut down, so it is possible to solve boiler dry firing and other problems caused by water leaks.

Note that this invention is not limited to the above-mentioned embodiments, but can be implemented in other forms by making appropriate design changes. For example, it is possible to provide a water leakage outlet in the water leakage receiver without installing a water leakage detection device in the water leakage receiver, and to provide a water leakage detection device in the outflow path from this drainage outlet. can be used in various forms.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the overall configuration of the distillation apparatus, and FIG. 2 is a sectional view of the frame. Explanation of the symbols representing the main parts of the drawing, 3...
Boiler, 5...Condenser, 67...Leakage receiver, 6
9...Water leak detection device.

Claims (1)

[Scope of utility model registration request] A distillation apparatus comprising a steam generator and a condenser for condensing steam, and a water leak detection device that detects water leakage to the water leak receiver, which is provided with a water leak receiver located below the steam generator. A distillation apparatus characterized by being provided with.