阅读说明：本技术 一种基于空气脉冲的电离室测氡仪 (Ionization chamber emanometer based on air pulse ) 是由 丁卫撑 徐蔚富 于 2020-08-20 设计创作，主要内容包括：本发明涉及氡子体检测领域,尤其涉及一种基于空气脉冲的电离室测氡仪,包括由外壳围成的用于安装各设备的仪器腔室,仪器腔室中安装有电离室,电离室内部安装有电离室收集电极,电离室收集电极安装在电离室的两个相对端的室壁上,电离室收集电极的其中一端穿过电离室室壁伸入前置放大电路屏蔽盒,前置放大电路屏蔽盒内设置有用于放大电离室收集电极检测信号的放大电路,并在所述电离室上设置有进气端和出气端,出气端通过气管与气泵进气端相连接,对应的在外壳上也设置有与电离室进气端相匹配的进气口,从而使得可通过气泵将需要检测的气体从外壳上的进气口进入电离室的进气端,进而进入电离室中进行检测,从而实现了对空气中氡含量的检测。(The invention relates to the radon daughter detection field, in particular to an air pulse-based ionization chamber radon measuring instrument, which comprises an instrument chamber which is surrounded by a shell and is used for installing each device, an ionization chamber is arranged in the instrument chamber, an ionization chamber collecting electrode is arranged in the ionization chamber and is arranged on the chamber wall of two opposite ends of the ionization chamber, one end of the ionization chamber collecting electrode penetrates through the chamber wall of the ionization chamber and extends into a preamplification circuit shielding box, an amplifying circuit for amplifying the detection signal of the ionization chamber collecting electrode is arranged in the preamplification circuit shielding box, an air inlet end and an air outlet end are arranged on the ionization chamber, the air outlet end is connected with the air inlet end of an air pump through an air pipe, and an air inlet matched with the air inlet end of the ionization chamber is correspondingly arranged on the shell, so that the air pump can enable the air to be detected to enter the air inlet end of the ionization chamber from the air inlet on the shell, and then the radon enters an ionization chamber for detection, thereby realizing the detection of the radon content in the air.)

1. The utility model provides an ionization chamber emanometer based on air pulse which characterized in that: comprises an instrument chamber (2) enclosed by a shell (1) and used for installing each device, an ionization chamber (3) is arranged in the instrument chamber (2), an ionization chamber collecting electrode (16) is arranged in the ionization chamber (3), the ionization chamber collecting electrodes (16) are mounted on the chamber walls at two opposite ends of the ionization chamber (3), one end of the ionization chamber collecting electrode (16) penetrates through the wall of the ionization chamber (3) and extends into the preamplification circuit shielding box (5), an amplifying circuit used for amplifying a detection signal of the ionization chamber collecting electrode (16) is arranged in the preamplification circuit shielding box (5), an air inlet end and an air outlet end are arranged on the ionization chamber (3), the air outlet end is connected with the air inlet end of an air pump (8) through an air pipe, the shell (1) is correspondingly provided with an air inlet matched with the air inlet end of the ionization chamber (3); the instrument chamber (2) is provided with a storage battery (9) for supplying power to each device and a controller 7 for controlling each device.

2. An air pulse based ionization chamber emanometer as claimed in claim 1 wherein: the two ends of the ionization chamber (3) are respectively arranged on the end plate (4), the ionization chamber collecting electrode (16) extending into the preamplification circuit shielding box (5) penetrates through the end plate (4) to extend into the preamplification circuit shielding box (5), and a protective ring (14) made of insulating materials is arranged on the circumferential contact surface of the ionization chamber collecting electrode (16) and the end plate (4).

3. An air pulse based ionization chamber emanometer as claimed in claim 2 wherein: the ionization chamber (3) is far away from the end face of the preamplifier circuit shielding box (5), a plurality of diffusion holes (17) penetrating through the end face are formed in the end face of the ionization chamber (3), so that an air inlet end of the ionization chamber (3) is formed, a through hole penetrating through the end plate (4) is formed in the center of the end plate (4) close to the diffusion holes (17), an air inlet bin (15) with an opening is installed on the end face of the end plate (4) far away from the ionization chamber (3), the opening of the air inlet bin (15) penetrates through the shell (1) and extends out of the instrument cavity (2), the bin bottom of the air inlet bin (15) is installed on the end plate (4), a plurality of diffusion holes (17) penetrating through the bin bottom are formed in the bin bottom of the air inlet bin (15), so that air can enter the through holes of the end plate (4) through the diffusion holes (17), and enters the ionization chamber (3) from the diffusion holes (17) formed in the end face of the ionization chamber (3), the air inlet bin (15) is characterized in that a sealing cover (6) is installed at an opening of the air inlet bin (15), and an air tap extending into the air inlet bin (15) is arranged at the center of the sealing cover (6).

4. An air pulse based ionization chamber emanometer as claimed in claim 3 wherein: the sealing device is characterized in that a sealing ring is arranged on a contact surface between the sealing cover (6) and the air inlet bin (15), a sealing ring is arranged on a contact surface between the air inlet bin (15) and the end plate (4), and a sealing ring is arranged on a contact surface between the end plate (4) and the ionization chamber (3).

5. An air pulse based ionization chamber emanometer as claimed in claim 1 wherein: any side of the shell (1) is provided with a charging interface, a data interface, a power switch and a mounting interface (13) for mounting the touch display screen.

6. An air pulse based ionization chamber emanometer as claimed in claim 1 wherein: install the handle on any one side of shell (1), the handle includes dwang (11) and handle (10), and pivot (18) are installed perpendicularly to an arbitrary end of dwang (11), and another end goes out to install handle (10) perpendicularly, pivot (18) are through bearing (19) installation shell (1) on to install restriction dwang (11) and revolute pivot (18) centre of a circle pivoted stop device on dwang (11).

7. An air pulse based ionization chamber emanometer as claimed in claim 6 wherein: stop device is including installing ring slip table (20) that is close to shell (1) a terminal surface in dwang (11), ring slip table (20) is concentric with pivot (18), and ring slip table (20) are located pivot (18) outside, and the internal diameter of ring slip table (20) is greater than the turnover external diameter, and ring slip table (20) are close to the one end of shell (1) and are provided with spout (21) around ring slip table (20) circumference to equidistantly be provided with a plurality of round holes on spout (21) circumference, be provided with a plurality of gag lever posts (12) in instrument cavity (2), gag lever post (12) run through shell (1) from instrument cavity (2), insert inside the round hole, just gag lever post (12) insert the inside one end of round hole and possess the circular arc surface.

8. An air pulse based ionization chamber emanometer as claimed in claim 7 wherein: the limiting rod (12) is matched with the shell (1) through threads.

9. An air pulse based ionization chamber emanometer according to any one of claims 1 to 8 wherein: the ionization chamber (3) is cylindrical, and the ionization chamber collecting electrodes (16) are arranged at two ends of the ionization chamber (3) along the axis of the ionization chamber (3).

Technical Field

The invention relates to the field of radon daughter detection, in particular to an ionization chamber radon measuring instrument based on air pulse.

Background

The common simple substance form of the radon is the radon which is colorless, odorless and tasteless inert gas and has radioactivity, and the radon in the air can easily enter the respiratory system of a human body to cause internal radiation to the human body. According to statistics, no one in the air has no second 2 nd cause of lung cancer caused by smoking.

In underground works with poor ventilation conditions, underground tunnels and other underground spaces, the radon concentration is generally higher, and the indoor radon concentration level is lower when some building works are finished and accepted. Along with the development of economy in China, improvement of housing conditions and more prominent environmental radon problem. Since 1995, national standards for radon control such as a radon concentration control standard in a house (GB/T16146-1995), a radon and radon daughter control standard in an underground building (GB 16356-. To know whether the radon concentration in the room exceeds the standard or not, the radon concentration in the room must be detected, so that a radon detector is needed to be provided for measuring the content of the radon concentration in the air.

Disclosure of Invention

The invention provides an air pulse-based ionization chamber radon measuring instrument, which realizes the detection of the radon concentration content in the air.

In order to achieve the purpose, the invention provides the following technical scheme:

an ionization chamber radon measuring instrument based on air pulse comprises an instrument chamber which is surrounded by a shell and is used for installing each device, an ionization chamber is installed in the instrument chamber, an ionization chamber collecting electrode is installed in the ionization chamber and is installed on the chamber wall of two opposite ends of the ionization chamber, one end of the ionization chamber collecting electrode penetrates through the chamber wall of the ionization chamber and extends into a preamplification circuit shielding box, an amplifying circuit used for amplifying detection signals of the ionization chamber collecting electrode is arranged in the preamplification circuit shielding box, an air inlet end and an air outlet end are arranged on the ionization chamber, the air outlet end is connected with an air inlet end of an air pump through an air pipe, and an air inlet matched with the air inlet end of the ionization chamber is correspondingly arranged on the shell, so that gas to be detected can enter the air inlet end of the ionization chamber from the air inlet on the shell through the air pump, and then enters an ionization chamber for detection, and a storage battery for supplying power to each device and a controller for controlling each device are arranged in the instrument chamber.

Preferably, two ends of the ionization chamber are respectively installed on the end plates, the ionization chamber collecting electrode extending into the preamplification circuit shielding box penetrates through the end plates to extend into the preamplification circuit shielding box, and the protective ring made of insulating materials is installed on the circumferential contact surface of the ionization chamber collecting electrode and the end plates.

Furthermore, the end face of the ionization chamber at one end of the ionization chamber far away from the shielding box of the preamplifier circuit is provided with a plurality of diffusion holes penetrating through the end face, thereby forming the gas inlet end of the ionization chamber, and a through hole penetrating through the end plate is arranged at the central position of the end plate close to the diffusion hole, so that gas can enter the diffusion hole through the through hole, and then enters the ionization chamber, an air inlet bin with an opening is arranged on one end surface of the end plate far away from the ionization chamber, the opening of the air inlet bin penetrates through the shell and extends out of the instrument chamber, the bin bottom of the air inlet bin is arranged on the end plate, and the bottom of the gas inlet bin is provided with a plurality of diffusion holes penetrating through the bin bottom, so that gas can enter the through holes of the end plate through the diffusion holes, the ionization chamber is arranged on the end face of the ionization chamber, a diffusion hole is formed in the end face of the ionization chamber, a sealing cover is installed at an opening of the air inlet bin, and an air tap extending into the air inlet bin is arranged at the center of the sealing cover. Through setting up the storehouse of admitting air and diffusion hole for gaseous entering behind the storehouse of admitting air can diffuse fast through a plurality of diffusion holes, and the further diffusion in diffusion hole of rethread ionization chamber makes during gaseous each corner that can fill the ionization chamber fast.

Still further, a sealing ring is arranged on a contact surface between the sealing cover and the air inlet bin, a sealing ring is arranged on a contact surface between the air inlet bin and the end plate, and a sealing ring is arranged on a contact surface between the end plate and the ionization chamber.

Preferably, any one side of the shell is provided with a charging interface, a data interface, a power switch and a mounting port for mounting the touch display screen.

Further, install the handle on any one side of shell, the handle includes dwang and handle, and the pivot is installed perpendicularly to an arbitrary end of dwang, and another end goes out to install the handle perpendicularly, the pivot is passed through on the bearing installation shell to install the stop device that the restriction dwang revolutes the rotation of the centre of a circle of rotation shaft on the dwang.

Preferably, stop device is including installing the ring slip table that is close to a shell terminal surface at the dwang, the ring slip table is concentric with the pivot, and the ring slip table is located the pivot outside, and the internal diameter of ring slip table is greater than the turnover external diameter, and the one end that the ring slip table is close to the shell is provided with the spout around ring slip table circumference to the equidistance is provided with a plurality of round holes on the circumference of spout, is provided with a plurality of gag lever posts from the instrument cavity, the gag lever post runs through the shell from the instrument cavity, inserts inside the round hole, just the inside one end of gag lever post insertion round hole possesses the circular arc surface. When the handle is rotated, large pressure needs to be applied, and resistance between the arc surface of the limiting rod and the round hole is overcome to rotate the handle. When the handle is fixedly arranged on a certain structure, the position of the shell can be adjusted by rotating the handle (actually, the shell rotates relative to the handle), and the device can be conveniently carried by workers by adjusting the position of the handle.

Preferably, the limiting rod is matched with the shell through threads.

Preferably, the ionization chamber is cylindrical, and the ionization chamber collecting electrodes are arranged at two ends of the ionization chamber along the axis of the ionization chamber.

Compared with the prior art, the invention has the beneficial effects that: the invention detects the radon content in the gas through the ionization chamber, and the ionization chamber is provided with the gas inlet end formed by the diffusion holes, thereby realizing that the gas can quickly fill all corners of the ionization chamber, and the ionization chamber is provided with the handle and is carried by workers, and simultaneously, the angle position of the shell can be conveniently adjusted through the handle.

Drawings

FIG. 1 is a schematic view of the interior of the radon measuring instrument of the present invention;

FIG. 2 is a cross-sectional view of an ionization chamber of the present invention;

FIG. 3 is an enlarged detail view of part A of the present invention;

FIG. 4 is an external schematic view of the present invention;

description of reference numerals: 1. a housing; 2. an instrument chamber; 3. an ionization chamber; 4. an end plate; 5. a pre-amplifier circuit shield box; 6. a sealing cover; 7. a controller; 8. an air pump; 9. a storage battery; 10. a handle; 11. rotating the rod; 12. a limiting rod; 13. an installation port; 14. a guard ring; 15. an air inlet bin; 16. an ionization chamber collecting electrode; 17. a diffusion hole; 18. a rotating shaft; 19. a bearing; 20. a circular ring sliding table; 21. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached fig. 1 to 4, an ionization chamber radon measuring instrument based on air pulse comprises an instrument chamber 2 enclosed by a housing 1 and used for installing each device, an ionization chamber 3 is installed in the instrument chamber 2, an ionization chamber collecting electrode 16 is installed in the ionization chamber 3, the ionization chamber collecting electrode 16 is installed on the chamber wall of two opposite ends of the ionization chamber 3, one end of the ionization chamber collecting electrode 16 penetrates through the chamber wall of the ionization chamber 3 and extends into a front amplifying circuit shielding box 5, an amplifying circuit used for amplifying the detection signal of the ionization chamber collecting electrode 16 is arranged in the front amplifying circuit shielding box 5, an air inlet end and an air outlet end are arranged on the ionization chamber 3, the air outlet end is connected with the air inlet end of an air pump 8 through an air pipe, correspondingly, an air inlet matched with the air inlet end of the ionization chamber 3 is also arranged on the housing 1, so that the air to be detected can enter the air inlet end of the ionization chamber 3 from the air inlet on the housing 1 through the air pump 8, and then into the ionization chamber 3 for detection, and a storage battery 9 for supplying power to each device and a controller 7 for controlling each device are installed in the instrument chamber 2.

Preferably, both ends of the ionization chamber 3 are respectively installed on the end plate 4, the ionization chamber collecting electrode 16 extending into the preamplification circuit shielding box 5 extends into the preamplification circuit shielding box 5 through the end plate 4, and the protective ring 14 made of insulating material is installed on the circumferential contact surface of the ionization chamber collecting electrode 16 and the end plate 4.

Furthermore, a plurality of diffusion holes 17 penetrating through the end face are arranged on the end face of the ionization chamber 3 at one end of the ionization chamber 3 far away from the preamplifier circuit shielding box 5, so as to form an air inlet end of the ionization chamber 3, a through hole penetrating through the end plate 4 is arranged at the central position of the end plate 4 close to the diffusion holes 17, so that air can enter the diffusion holes 17 through the through hole and then enter the ionization chamber 3, an air inlet bin 15 with an opening is arranged on one end face of the end plate 4 far away from the ionization chamber 3, the opening of the air inlet bin 15 penetrates through the shell 1 and extends out of the instrument chamber 2, the bin bottom of the air inlet bin 15 is arranged on the end plate 4, a plurality of diffusion holes 17 penetrating through the bin bottom are arranged on the bin bottom of the air inlet bin 15, so that air can enter the through hole of the end plate 4 through the diffusion holes 17, and enter the ionization chamber 3 from the diffusion holes 17 arranged on the end face of the ionization chamber 3, the opening of the air inlet bin 15 is provided with a sealing cover 6, and the center of the sealing cover 6 is provided with an air tap extending into the air inlet bin 15. Through setting up into the storehouse 15 and the diffusion hole 17 of admitting air for gaseous entering is behind the storehouse 15 of admitting air, can be through the quick diffusion of a plurality of diffusion holes 17, and the further diffusion of diffusion hole 17 of rethread ionization chamber 3 makes gaseous can fill fast in each corner of ionization chamber 3.

Still further, a sealing ring is arranged on the contact surface between the sealing cover 6 and the air inlet bin 15, a sealing ring is arranged on the contact surface between the air inlet bin 15 and the end plate 4, and a sealing ring is arranged on the contact surface between the end plate 4 and the ionization chamber 3.

Preferably, any one side of the housing 1 is provided with a charging interface, a data interface, a power switch and an installation interface 13 for installing a touch display screen.

Further, install the handle on any one side of shell 1, the handle includes dwang 11 and handle 10, and pivot 18 is installed perpendicularly to arbitrary one end of dwang 11, and another end goes out to install handle 10 perpendicularly, pivot 18 passes through bearing 19 and installs on shell 1 to install the stop device that restriction dwang 11 revolutes 18 centre of a circle rotations on dwang 11.

Preferably, stop device is including installing ring slip table 20 that is close to 1 terminal surface of shell at dwang 11, ring slip table 20 is concentric with pivot 18, and ring slip table 20 is located the 18 outsides of pivot, and ring slip table 20's internal diameter is greater than the turnover external diameter, and ring slip table 20 is close to the one end of shell 1 and is provided with spout 21 around ring slip table 20 circumference to equidistant a plurality of round holes that are provided with in spout 21 circumference are provided with a plurality of gag lever posts 12 from instrument cavity 2, gag lever post 12 runs through shell 1 from instrument cavity 2, inserts inside the round hole, just gag lever post 12 inserts the inside one end of round hole and possesses the circular arc surface. When the handle is rotated, a large pressure is applied and the resistance between the arc surface of the limiting rod 12 and the circular hole is overcome to rotate the handle. And when the handle is fixedly arranged on a certain structure, the position of the shell 1 can be adjusted by rotating the handle (actually, the shell 1 rotates relative to the handle), and the device can be conveniently carried by workers by adjusting the position of the handle.

Preferably, the stop rod 12 is in threaded engagement with the housing 1.

Preferably, the ionization chamber 3 is cylindrical, and the ionization chamber collecting electrodes 16 are installed at two ends of the ionization chamber 3 along the axis of the ionization chamber 3.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.