CN2189750Y - Quick-detector for leakage of gamma radiation source in well - Google Patents

Abstract

The utility model relates to a quick detector for the leakage of a gamma radiation source in a well, which is composed of a source storage cylinder, a water flooding nozzle, a pumping nozzle, a conical ring, a top end plug and a base, wherein the water flooding nozzle and the pumping nozzle are arranged on the source storage cylinder; the lower end of the source storage cylinder is welded on the base, the upper end of the source storage cylinder is welded to the conical ring; the top end plug covers the conical ring; a source storage frame is installed in the source storage cylinder, and a radiation source (stick) is inserted into the source storage frame. First, the top end plug covers the conical ring; second, well water in a soaking cylinder is pumped, and distilled water is filled in the soaking cylinder; after a radiation source is soaked for a certain time, the radioactive content of the water in the source storage cylinder is determined.

Description

Quick-detector for leakage of gamma radiation source in well

The utility model is that a kind of gamma emitter leaks quick detector, check the cobalt 60 employed sealing gamma emitters of γ source irradiation devices (rod), because using to be directed at shell weld or involucrum itself, airtight quality defective or super shelf-life produce destruction or slit, the well water of seasoning radiation source will produce radioactive contamination because of radiomaterial leaks, and belongs to nuclear radiation line or X radiant rays fields of measurement.

Situation in the past is, when finding that gamma emitter leaks, sends radiation source back to factory, and hunts leak in special checkout facility, and not only time-consuming but also take a lot of work, testing cost is big.Measure the radioactivity of well water, though can judge whether leakage takes place, because well water is too many, the sensitivity that detects is not high yet, can not in time find to leak, nor can judge that radiation source (rod) leaks.

The purpose of this utility model is that a kind of detector of design is that the radiation source of seasoning cobalt 60 γ or other isotope Dynarads leaks, and a kind of detection equipment fast on the spot is provided.

The utility model is by such realization:

1, this detector is made up of storage source tube, water-filling nozzle, the mouth that draws water, tapered ring, top plug, base, on the storage source tube 1 water-filling nozzle 2 is housed, the mouth 6 that draws water, tube lower end, storage source be welded on the base 7, tube upper end, storage source and tapered ring 4 welding, top plug 5 closely cooperates with conical ring, suspension ring 3 are welded on the tapered ring 4, tressel 8 is fixed by bolts on the base 7, source of bank savings frame 11 is formed by being drilled with 14 to 20 hole two disks, radiation source (rod) 12 is inserted on the source of bank savings frame 11, and source of bank savings frame 11 is placed in the storage source tube 1.

2, can hold singlely to 20 radiation sources (rod) in the storage source tube of detector, radiation source (rod) length is 25 to 450 millimeters, and (rod) diameter is 10 to 30 millimeters.

3, the inner-wall material of detector is brass, red copper, aluminium and aluminium alloy.

The utility model accompanying drawing has

Fig. 1 is that gamma emitter leaks quick detector forward cut-open view

Fig. 2 is that gamma emitter leaks quick detector B-B sectional view

Fig. 3 is that gamma emitter leaks quick detector left side AOB view

Fig. 4 is that gamma emitter leaks quick detector application block scheme

Part name in the accompanying drawing:

1, source of bank savings tube 2, water-filling nozzle 3, suspension ring

4, tapered ring 5, top fill in 6, mouth draws water

7, base 8, tressel 9, bolt

10, reinforcement 11, source of bank savings frame 12, radiation source (rod)

Fig. 1 is that gamma emitter leaks quick detector forward cut-open view, sees from figure, and detector is made up of storage source tube 1, water-filling nozzle 2, tapered ring 4, top plug 5, the mouth 6 that draws water, base more than 7 parts.On storage source tube 1, water-filling nozzle 2 is housed, the mouth 6 that draws water, tube lower end, storage source be welded on the base 7, tube upper end in storage source closely cooperates with tapered ring with tapered ring 4 welding one top plug 5, suspension ring 3 are welded on the tapered ring 4, tressel 8 is fixed by bolts on the base 7.

Fig. 2 is that gamma emitter leaks quick detector B-B cut-open view, sees that from figure source of bank savings frame pattern, source of bank savings frame 11 be made up of two to three disks up and down, disk brill 14-20 hole in going up, and following disk and last disk bore same hole, but do not drill.Radiation source (rod) 12 is inserted on the source of bank savings frame of two or three disks composition.

Fig. 3 is that gamma emitter leaks the local AOB view in quick detector left side, sees among Fig. 3 that reinforcement 10 is welded between source of bank savings tube 1 and the base 7, and bolt 9 is fixed on tressel 8 on the base 7.

Fig. 4 uses the detector block scheme, promptly check process flow diagram when radiation source leaks, detector is a sealing hydroecium that has cone seal top plug and water flowing is arranged up and down, can settle the source of bank savings frame of the radiation source (rod) of different size in the cell, when checking the radiation source leakage operation, earlier the remaining well water of closed cells is taken away, and distilled water injected cell, the distilled water suction gatherer in overshoot source will be soaked through certain hour with vacuum pump in the detector, measure the contamination that soaks water at last, and judge by measurement result whether radiation source has leakage.

The superiority of this detector, it can be in the sealing property of gamma ray radiator device storage source well floor inspection gamma ray radiator. Because the detector volume is much smaller than storage source well water, detector is provided with again multiple laying rack, the method of inspection is easy, highly sensitive, can within a short period of time by the source that detects leakage in the dozens of radiation source, have and save time economic advantage, and can find early to leak, avoid making well water to suffer radiocontamination. Detector is fit to the leak check of the radiation source of all size. Also can use for the gamma emitter in the storage source container. This detector is tested in water, and the material selection of detector is difficult for the brass material with the exchange of cobalt element generation isotope, has improved the reliability of check.

Claims (3)

1, gamma emitter leaks quick detector in the well, form by storage source tube, water-filling nozzle, the mouth that draws water, tapered ring, top plug, base, it is characterized in that: on the storage source tube 1 water-filling nozzle 2 is housed, the mouth 6 that draws water, tube lower end, storage source be welded on the base 7, tube upper end, storage source and tapered ring 4 welding, top plug 5 closely cooperates with conical ring, suspension ring 3 are welded on the tapered ring 4, tressel 8 is fixed by bolts on the base 7, source of bank savings frame 11 is formed by being drilled with 14 to 20 hole two to three disks, radiation source (rod) 12 is inserted on the source of bank savings frame 11, and source of bank savings frame 11 is placed in the storage source tube 1.

2, gamma emitter leaks quick detector in the well according to claim 1, it is characterized in that: can hold single in the storage source tube of detector to 20 radiation sources (rod), radiation source (rod) length is 25 to 450 millimeters, and (rod) diameter is 10 to 30 millimeters.

3, gamma emitter leaks quick detector in the well according to claim 1, it is characterized in that: the inner-wall material of detector is brass, red copper, aluminium and aluminium alloy.

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