CN212660360U

CN212660360U - Alpha electrostatic eliminator

Info

Publication number: CN212660360U
Application number: CN202021261274.3U
Authority: CN
Inventors: 刘斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-05
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses an alpha electrostatic eliminator can prevent that the alpha radiation source from losing. The alpha static eliminator comprises an alpha radiation source and an assembly container for accommodating the alpha radiation source, wherein the assembly container can be opened and connected with a circuit conductivity real-time monitoring circuit, and the circuit conductivity real-time monitoring circuit alarms after the assembly container is opened. Compared with the prior art, the utility model discloses alpha electrostatic arrester prevents that the alpha radiation source from droing and losing including the equipment container of placing the alpha radiation source and the integrality of cooperation circuit monitoring this equipment container.

Description

Alpha electrostatic eliminator

Technical Field

The invention relates to an alpha electrostatic eliminator, in particular to an electrostatic eliminator for preventing alpha radiation source loss through real-time monitoring.

Background

The alpha ray (alpha radiation source) has the advantages of high speed, good balance degree (balance voltage of 0V) and small occupied space when being used for eliminating static electricity, and can play a prominent role in the fields of semiconductors, liquid crystal displays, petrifaction, firer and the like. However, the most important part of the products, alpha radiation source, is made of an isotopic material, which is strictly regulated by the state and is not allowed to lose or disperse. For better protection of the alpha radiation source, a device is needed which can monitor the alpha radiation source.

SUMMERY OF THE UTILITY MODEL

The utility model provides an alpha electrostatic eliminator can prevent that the alpha radiation source from losing.

Alpha static eliminator, including the equipment container of alpha radiation source, holding alpha radiation source, the equipment container can open and connect circuit conductivity real-time supervision circuit, and the equipment container is opened back circuit conductivity real-time supervision circuit and is reported to the police.

The utility model discloses an alpha radiation source is made into slice or film shape with gold and silver complex, and the alpha radiation source includes top layer, bottom layer, centre level and the outer sealing layer of the outer round of cladding centre level of centre level centre gripping between the top layer and the bottom layer; the middle layer is Am²⁴¹、Po²¹⁰、Pu²³⁸Or Pu²³⁹A radioisotope or oxide thereof.

The alpha radiation source is fixed on flaky support plate with the viscose mode, and the support plate can adopt modes such as welding, bonding, buckle, riveting or screw to fix in the equipment container.

The assembly container of the utility model is a buckle type assembly container, which comprises a buckle type container with an opening at the upper part, and a buckle type top cover buckled on the buckle type container, wherein the buckle type top cover is provided with an air vent, and an alpha radiation source is fixed in the buckle type container; the leads respectively led out from the buckle type container and the buckle type top cover are connected to a circuit conductivity real-time monitoring circuit, and when the buckle type top cover is separated from the buckle type container, the circuit conductivity real-time monitoring circuit gives an alarm.

The assembly container of the utility model is a drawing type assembly container, which comprises a drawing type container with a square upper opening and two sides which are outwards turned to form a horizontal edge, and a drawing type top cover with a square upper opening and two sides which are downwards and inwards bent to form a groove shape, wherein the edge of the drawing type container just slides into the groove of the drawing type top cover from the side edge and is fastened; the wires respectively led out from the pull-out container and the pull-out top cover are connected to the circuit conductivity real-time monitoring circuit, and when the pull-out top cover is separated from the pull-out container, the circuit conductivity real-time monitoring circuit gives an alarm.

The assembly container of the utility model is a screw-fixed assembly container, which comprises a cylindrical metal sleeve, a screw joint top cover screwed on the top surface of the metal sleeve and a screw joint bottom cover screwed on the bottom surface of the metal sleeve; the alpha radiation source is fixed on the screw-connected bottom cover; the wires respectively led out from the screw top cover and the screw bottom cover are connected to the circuit conductivity real-time monitoring circuit, and when the screw top cover or the screw bottom cover is separated from the metal sleeve, the circuit conductivity real-time monitoring circuit gives an alarm.

The assembly container of the utility model is a hinge type assembly container, which comprises a hinge type top cover and a hinge type bottom cover, one side of which is hinged with a hinge, the other side of the hinge type top cover and the hinge type bottom cover is buckled with a lock catch which can be opened and closed, the middle of the back of the lock catch buckle is provided with a hole, a wire provided with an insulating layer passes through the hole of the lock catch and is wound by a circle of the lock catch, and an alpha radiation source is fixed on the hinge type bottom cover; the two ends of the wire with the insulating layer are connected to the circuit conductivity real-time monitoring circuit, if the hinge type top cover and the hinge type bottom cover are opened at the lock catch, the wire with the insulating layer can be torn off, and then the circuit conductivity real-time monitoring circuit gives an alarm.

The assembly container of the utility model is a cylindrical assembly container, which comprises a cylindrical barrel body which is transversely arranged, a left baffle and a right baffle which are provided with a left side closed barrel body and a right side closed barrel body, an alpha radiation source is fixed on the inner wall of the barrel body, and the left baffle and the right baffle are hollow structures; left baffle and right baffle are connected to circuit conductivity real time monitoring circuit respectively, can trigger the alarm like left baffle or right baffle and barrel separation.

Cylindric equipment container is installed in air flue or wind gap department to the air current blows off the ionized air wherein and uses static source static elimination.

The container bottom of the assembly container is not higher than 2.5cm from the outlet of the cover body.

Compared with the prior art, the utility model discloses alpha electrostatic arrester prevents that the alpha radiation source from droing and losing including the equipment container of placing the alpha radiation source and the integrality of cooperation circuit monitoring this equipment container.

Drawings

Fig. 1 is a schematic view of an alpha radiation source configuration.

Fig. 2 is a schematic structural view of the snap-fit assembly container described in embodiment 1.

Fig. 3 is a schematic structural view of the pull type assembled container according to embodiment 2.

Fig. 4 is a schematic structural view of the screw-fixing assembly container described in embodiment 3.

Fig. 5 is a schematic structural view of the hinge type assembled container according to embodiment 4.

Fig. 6 is a schematic view showing the insulated wires broken when the hinge type assembled container described in embodiment 4 is opened.

Fig. 7 is a schematic view showing the construction of the cartridge type assembling container described in example 5.

Fig. 8 is a circuit diagram of a circuit continuity real-time monitoring circuit.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Alpha radiation sources are selected using isotopes that produce primarily alpha rays during nuclear decay such as: am²⁴¹、Po²¹⁰、Pu²³⁸、Pu²³⁹(ii) a The energy of alpha ray of the radioactive isotope is about 5.4MeV, 5.3MeV, 5.5MeV, 5.1MeV, the half-life period is 232 years, 138 days, 87.7 years, 2411 years, because the energy intensity of the radioactive isotope is more than 5MeV, namely 1 alpha particle can generate 1.5 × 10e⁵The left and right air ions can quickly improve the conductivity of the air, thereby effectively eliminating static electricity.

As shown in fig. 1, the alpha radiation source 1 is a sheet or film made of a gold-silver composite. The alpha radiation source comprises a top layer 11, a bottom layer 14, a middle layer 12 clamped between the top layer 11 and the bottom layer 14 and a sealing layer 13 wrapping one circle outside the middle layer 12; the top layer 11 is a gold film (Au), and the thickness of the gold film is 1-10 μm; the intermediate layer 12 is Am²⁴¹、Po²¹⁰、Pu²³⁸Or Pu²³⁹Radioisotope or its oxide, and sealing layer 13 made of metal material N i, Ag or Au(ii) a The underlayer 14 is a substrate of silver (Ag) and has a thickness of 100 μm or more.

As shown in fig. 2 to 7, the alpha radiation source 1 is adhesively fixed to the carrier plate or directly glued into the bottom surface of the assembly structure container. The carrier plate is sheet-shaped, and the alpha radiation source 1 is glued on the carrier plate; the carrier plate can be fixed in the assembly container by welding, bonding, buckling, riveting or screws. The assembly container is made of conductive metal and is composed of a container body and a cover body, the alpha radiation source is protected, and hands or other objects are prevented from contacting or damaging the alpha radiation source.

As shown in fig. 8, a loss-proof monitoring circuit is provided, i.e. the container and the cover are separated to alarm by leading out a conductive circuit from the container and the cover respectively and connecting into a circuit conductivity real-time monitoring circuit; and secondly, a lead with an insulating layer penetrates through and is wound on the lock catch of the fixed container, two ends of the lead with the insulating layer are connected with a circuit conductivity real-time monitoring circuit, and when the lock catch is opened, the lead is broken and the monitoring circuit gives an alarm. In the first method, the conductive circuit of the container and the lid are connected by using an FPC (flexible circuit board) or a wire, and are not electrically connected to other conductors except the body, i.e., the container or the lid, which is in contact with the container or the lid. The second way is that the conducting wire with the insulating layer is directly connected into the monitoring circuit through the FPC or the conducting wire. The circuit conductivity real-time monitoring circuit is provided with an alarm device with light and sound, and can be fixed at a striking position on the spot, so that the circuit conductivity real-time monitoring circuit is convenient to check and manage. If the container and the cover body are separated, the circuit is broken or the resistance is high, and then an alarm is sent.

The alpha radiation source 1 has an effective function, and unless strong airflow is used for blowing, an assembly container for placing the alpha radiation source 1 is not suitable to be too high, the electrostatic elimination effect can be influenced by too high distance, and the distance from the bottom of the container to an outlet of a cover body is not higher than 2.5 cm. The lid adopts mesh or hollow out construction to alpha ray can effectively pass through. The cover body and the container can be assembled and fixed by adopting the following embodiments.

Example 1

As shown in fig. 2, the assembly container is a snap-in assembly container 2, and includes a snap-in container 22 with an upper opening, and a snap-in top cover 21 fastened on the snap-in container 22, the snap-in top cover 21 is provided with a vent hole, and the alpha radiation source 1 is fixed in the snap-in container 22. The leads respectively led out from the snap-in container 22 and the snap-in top cover 21 are connected to a circuit conductivity real-time monitoring circuit, and when the snap-in top cover 21 is separated from the snap-in container 22, the circuit conductivity real-time monitoring circuit gives an alarm.

Example 2

As shown in fig. 3, the assembled container is a pull-out assembled container 3, which comprises a pull-out container 32 with a square upper opening and two outward turned horizontal edges, a pull-out top cover 31 with two downward and inward bent grooves, and the edges of the pull-out container 32 slide inwards from the side edges into the grooves of the pull-out top cover 31 and are fastened. The wires respectively led out from the pull-out container 32 and the pull-out top cover 31 are connected to a circuit conductivity real-time monitoring circuit, and when the pull-out top cover 31 and the pull-out container 32 are separated, the circuit conductivity real-time monitoring circuit gives an alarm.

Example 3

As shown in fig. 4 and 5, the assembly container is a screw-fixed assembly container 4, and includes a cylindrical metal sleeve 41, a screw-connected top cover 42 screwed on the top surface of the metal sleeve 41, and a screw-connected bottom cover 43 screwed on the bottom surface of the metal sleeve 41; the alpha radiation source 1 is fixed to the screw-on bottom cover 43. The wires respectively led out from the screw top cover 42 and the screw bottom cover 43 are connected to the circuit conductivity real-time monitoring circuit, and when the screw top cover 42 or the screw bottom cover 43 is separated from the metal sleeve 41, the circuit conductivity real-time monitoring circuit gives an alarm.

Example 4

As shown in fig. 6, the assembly container is a hinge-type assembly container 5, which includes a hinge-type top cover 51 and a hinge-type bottom cover 52 hinged together at one side, the other sides of the hinge-type top cover 51 and the hinge-type bottom cover 52 are fastened together by a openable fastener 53, the middle of the fastener 53 is provided with a hole after being fastened, a wire 54 with an insulating layer passes through the hole of the fastener 53 and winds the fastener 53 for one circle, and the alpha radiation source 1 is fixed on the hinge-type bottom cover 52. Both ends of the conductive wire 54 with insulation layer are connected to the circuit continuity real-time monitoring circuit, if the hinge top cover 51 and the hinge bottom cover 52 are opened at the lock 53, the conductive wire 54 with insulation layer will be torn, and the circuit continuity real-time monitoring circuit will give an alarm.

Example 5

As shown in fig. 7, the assembly container is a cylindrical assembly container 6, and includes a cylindrical body 61 placed transversely, a left baffle 62 and a right baffle 63 provided with left and right sides to close the cylindrical body 61, the alpha radiation source 1 is fixed on the inner wall of the cylindrical body 61, the cylindrical body 61 may be a circular cylinder, a square cylinder or a polygonal cylinder, and the left baffle 62 and the right baffle 63 are in a mesh or hollow structure. The left baffle 62 and the right baffle 63 are respectively connected to a circuit conductivity real-time monitoring circuit, and an alarm is triggered if the left baffle 62 or the right baffle 63 is separated from the cylinder 61. The cylindrical assembly container 6 is installed at an air passage or an air port, and ionized air in the cylindrical assembly container is blown out by air flow and then applied to an electrostatic source to eliminate static electricity.

Claims

1. An alpha static eliminator comprises an alpha radiation source (1) and an assembly container for accommodating the alpha radiation source (1), and is characterized in that: the assembly container can be opened and closed to be connected with the circuit conductivity real-time monitoring circuit, and the circuit conductivity real-time monitoring circuit gives an alarm after the assembly container is opened.

2. The electrostatic alpha eliminator as defined in claim 1, wherein: the alpha radiation source (1) is formed by combining gold and silver into a sheet or a film, and the alpha radiation source (1) comprises a top layer (11), a bottom layer (14), an intermediate layer (12) clamped between the top layer (11) and the bottom layer (14) and a sealing layer (13) covering the outer ring of the intermediate layer (12); the intermediate layer (12) is Am²⁴¹、Po²¹⁰、Pu²³⁸Or Pu²³⁹A radioisotope or oxide thereof.

3. The electrostatic alpha eliminator as defined in claim 2, wherein: the alpha radiation source (1) is fixed on the flaky carrier plate in a viscose mode, and the carrier plate can be fixed in the assembly container in a welding mode, an adhesion mode, a buckling mode, a riveting mode or a screw mode.

4. The electrostatic alpha eliminator as defined in claim 1, wherein: the assembly container is a buckle type assembly container (2) and comprises a buckle type container (22) with an opening at the upper part and a buckle type top cover (21) buckled on the buckle type container (22), a vent hole is formed in the buckle type top cover (21), and the alpha radiation source (1) is fixed in the buckle type container (22); the leads respectively led out from the buckle type container (22) and the buckle type top cover (21) are connected to a circuit conductivity real-time monitoring circuit, and when the buckle type top cover (21) is separated from the buckle type container (22), the circuit conductivity real-time monitoring circuit gives an alarm.

5. The electrostatic alpha eliminator as defined in claim 1, wherein: the assembly container is a drawing type assembly container (3) and comprises a drawing type container (32) which is square and is provided with an opening at the upper part, two sides of the drawing type container are outwards turned to form horizontal edges, the drawing type top cover (31) which is square and is bent downwards and inwards to form a groove shape integrally, and the edges of the drawing type container (32) just slide into the groove of the drawing type top cover (31) from the side edges and are fastened; and the wires respectively led out from the pull-out container (32) and the pull-out top cover (31) are connected to a circuit conductivity real-time monitoring circuit, and when the pull-out top cover (31) is separated from the pull-out container (32), the circuit conductivity real-time monitoring circuit gives an alarm.

6. The electrostatic alpha eliminator as defined in claim 1, wherein: the assembly container is a screw-fixed assembly container (4) and comprises a cylindrical metal sleeve (41), a screwed top cover (42) screwed on the top surface of the metal sleeve (41) and a screwed bottom cover (43) screwed on the bottom surface of the metal sleeve (41); the alpha radiation source (1) is fixed on the screw-joint bottom cover (43); and the conducting wires respectively led out from the screw top cover (42) and the screw bottom cover (43) are connected to the circuit conductivity real-time monitoring circuit, and when the screw top cover (42) or the screw bottom cover (43) is separated from the metal sleeve (41), the circuit conductivity real-time monitoring circuit gives an alarm.

7. The electrostatic alpha eliminator as defined in claim 1, wherein: the assembly container is a hinge type assembly container (5) and comprises a hinge type top cover (51) and a hinge type bottom cover (52), one side of the hinge type top cover (51) is hinged with the other side of the hinge type bottom cover (52) and is buckled together by a openable lock catch (53), the middle of the lock catch (53) is provided with a hole after being buckled, a lead (54) with an insulating layer penetrates through the hole of the lock catch (53) and is wound around the lock catch (53) for one circle, and the alpha radiation source (1) is fixed on the hinge type bottom cover (52); both ends of the conducting wire (54) with the insulating layer are connected to the circuit conductivity real-time monitoring circuit, if the hinge type top cover (51) and the hinge type bottom cover (52) are opened at the lock catch (53), the conducting wire (54) with the insulating layer can be torn off, and the circuit conductivity real-time monitoring circuit gives an alarm.

8. The electrostatic alpha eliminator as defined in claim 1, wherein: the alpha radiation source is characterized in that the assembly container is a cylindrical assembly container (6) and comprises a transversely placed cylindrical barrel (61), a left baffle (62) and a right baffle (63) which are provided with left and right sides for sealing the barrel (61), the alpha radiation source (1) is fixed on the inner wall of the barrel (61), and the left baffle (62) and the right baffle (63) are of hollow structures; the left baffle (62) and the right baffle (63) are respectively connected to a circuit conductivity real-time monitoring circuit, and an alarm can be triggered if the left baffle (62) or the right baffle (63) is separated from the barrel (61).

9. The electrostatic alpha eliminator as defined in claim 8, wherein: the cylindrical assembly container (6) is arranged at an air passage or an air port, and ionized air in the cylindrical assembly container is blown out by airflow and acts on the static power source to eliminate static electricity.

10. The electrostatic alpha eliminator as defined in claim 1, wherein: the distance between the bottom of the container of the assembly container and the outlet of the cover body is not higher than 2.5 cm.