Ionization chamber for tritium gas measurement

Abstract

The utility model discloses an ionization chamber for tritium gas measurement, which belongs to an ionization device in the technical field of tritium gas treatment equipment, and adopts the technical scheme that the ionization chamber comprises a collecting barrel, a gas outlet pipe is arranged at the lower end of the collecting barrel, and a gas outlet pipe is arranged at the upper end of the collecting barrel; the sealing lower flange is fixedly arranged at the upper end of the collecting barrel; the upper sealing flange is detachably connected with the lower sealing flange through a sealing bolt; the sealing upper flange is provided with an air inlet connector and an electrode, and the electrode is vertically arranged at the position of a central shaft of the collecting barrel; according to the ionization chamber for tritium gas measurement provided by the utility model, the upper end of the collecting barrel is provided with the sealing lower flange and the sealing upper flange which can be in sealing connection, so that the gas inlet joint and the electrode can effectively ionize tritium gas in a space with better sealing performance; and therefore, the processing effect of ionizing the tritium gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tritium gas processing equipment technical field, concretely relates to a kind of ionization chamber for tritium gas measurement. BACKGROUND

[0002] Tritium is the isotope of hydrogen, and has extremely important application in military and scientific research field. Because tritium continuously releases beta rays, it can cause cell and genetic toxicity to organisms. Tritium is a low-energy beta nuclide with maximum energy of 18 keV and average energy of 5.7 keV. The maximum range of beta particles in water is only 6 μm, and in air is 5 mm. Common tritium measurement methods include liquid scintillation tritium measurement, bubbler tritium measurement, flat panel imaging tritium measurement and ionization chamber tritium measurement. Tritium measurement can be divided into three fields according to monitoring objects: process monitoring, radiation protection monitoring and environmental monitoring.

[0003] In the prior art, the detection of tritium gas is usually processed by the method of ionization chamber. However, the existing ionization chamber has poor airtightness for the existence of tritium gas, which leads to poor ionization effect and large error in the detection of tritium gas. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of ionization chamber for tritium gas measurement. By setting the sealable lower flange and the sealable upper flange at the upper end of the collection barrel, the gas inlet joint and the through electrode can be in a space with good sealing property, so as to effectively ionize tritium gas and improve the processing effect of ionizing tritium gas.

[0005] The utility model is achieved to provide a kind of ionization chamber for tritium gas measurement, comprising:

[0006] A collection barrel is provided at the upper end of the collection barrel, and a gas outlet pipe is arranged at the lower end of the collection barrel.

[0007] A sealable lower flange is fixedly arranged at the upper end of the collection barrel.

[0008] A sealable upper flange is detachably connected to the sealable lower flange by a sealing bolt.

[0009] The sealable upper flange is provided with a gas inlet joint and a through electrode, and the through electrode is vertically arranged at the position of the central axis of the collection barrel.

[0010] Further, an insulating sleeve is arranged outside the collection barrel, and the insulating sleeve comprises an insulating sleeve arranged on the side of the collection barrel and an insulating bottom plate sleeve arranged at the bottom of the collection barrel, and the insulating bottom plate sleeve is detachably connected to the insulating sleeve.

[0011] Furthermore, a lower insulating cover is provided at the upper end of the insulating sleeve, an upper insulating cover is sleeved on the upper end of the sealing upper flange, and the upper insulating cover is sleeved on the outside of the lower insulating cover.

[0012] Furthermore, a sealing insulating sleeve is provided in the middle of the sealing upper flange, and the through electrode is fixedly connected to the sealing upper flange through the sealing insulating sleeve.

[0013] Furthermore, there are more than two sealing bolts in the circumferential direction of the sealing upper flange, and the sealing bolts pass through the upper insulating cover, the sealing upper flange and the sealing lower flange in sequence. The lower insulating cover is provided with connection holes near the corresponding sealing bolts.

[0014] Furthermore, a shielding cover is provided on the outside of the upper insulating cover, the shielding cover is detachably connected to the upper insulating cover via the sealing bolts, and the air inlet connector is provided through the shielding cover.

[0015] Furthermore, an annular groove is provided on the upper end surface of the sealing lower flange, an insulating gasket is provided between the sealing lower flange and the sealing upper flange, and the insulating gasket is arranged in the annular groove.

[0016] Furthermore, a first insulating gasket is provided between the sealing insulating sleeve and the sealing upper flange, and a second insulating gasket is provided between the through electrode and the sealing insulating sleeve.

[0017] The beneficial effects of the present invention are as follows:

[0018] In the present invention, since a collecting barrel is provided, a working environment for ionizing tritium gas is provided, so that the tritium gas is ionized in the process of passing through the collecting barrel. More specifically, since a sealing lower flange is provided at the upper end of the collecting barrel, and the air inlet connector and the through electrode are fixedly arranged on the external sealing upper flange, the air inlet connector and the through electrode are sealed and installed in the collecting barrel. Furthermore, the tritium gas that needs to be ionized enters the collecting barrel through the air inlet connector, is ionized, and is then discharged from the air outlet pipe. The whole device has good sealing performance, which realizes efficient ionization of tritium gas in a sealed environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the internal structure of the ionization chamber of the utility model;

[0021] Figure 2 It is a schematic diagram of the partial structure of the sealing lower flange and the sealing upper flange of the utility model.

[0022] In the accompanying drawings, 1-collecting barrel, 2-outlet pipe, 3-sealed lower flange, 4-sealed upper flange, 5-sealing bolt, 6-air inlet joint, 7-through electrode, 8-insulating sleeve, 9-insulating sleeve, 10-insulating bottom plate sleeve, 11-lower insulating cover, 12-upper insulating cover, 13-sealed insulating sleeve, 14-connecting hole, 15-shielding cover, 16-ring groove, 17-insulating pad, 18-first insulating gasket, 19-second insulating gasket. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0025] Reference Figure 1 and Figure 2 , an ionization chamber for tritium gas measurement, comprising:

[0026] A collecting barrel 1, wherein the upper end of the collecting barrel 1 is open and the lower end of the collecting barrel 1 is provided with an air outlet pipe 2;

[0027] A sealing lower flange 3, wherein the sealing lower flange 3 is fixedly arranged at the upper end of the collecting barrel 1;

[0028] A sealing upper flange 4 detachably connected to the sealing lower flange 3 via sealing bolts 5 ; and

[0029] The sealing upper flange 4 is provided with an air inlet joint 6 and a through electrode 7 , and the through electrode 7 is vertically arranged at the position of the central axis of the collecting barrel 1 .

[0030] Since the collecting barrel 1 is provided, a working environment for ionizing tritium gas is provided, so that the tritium gas is ionized in the process of passing through the collecting barrel 1. More specifically, since a sealing lower flange 3 is provided at the upper end of the collecting barrel 1, and the air inlet connector 6 and the pass electrode 7 are fixedly provided on the external sealing upper flange 4, the air inlet connector 6 and the pass electrode 7 are sealed and installed in the collecting barrel 1. Then, the tritium gas that needs to be ionized enters the collecting barrel 1 through the air inlet connector 6, is ionized, and is then discharged from the air outlet pipe 2. The whole equipment has good sealing performance, which realizes efficient ionization of tritium gas in a sealed environment.

[0031] Preferably, an insulating sleeve 8 is provided on the outside of the collecting barrel 1, and the insulating sleeve 8 includes an insulating sleeve 9 provided on the side of the collecting barrel 1 and an insulating bottom plate sleeve 10 provided on the bottom of the collecting barrel 1, and the insulating bottom plate sleeve 10 is detachably connected to the insulating sleeve 9.

[0032] Since an insulating sleeve 8 is provided on the outside of the collecting barrel 1, the interior of the collecting barrel 1 can provide an environment that is conducive to the ionization operation of tritium gas. More specifically, the insulating sleeve 8 is provided as a shell relatively connected by an insulating sleeve 9 and an insulating bottom plate sleeve 10, so that the installation of the insulating sleeve 8 on the collecting barrel 1 is more convenient; as a preferred embodiment of this embodiment, the insulating sleeve 9 can be relatively fixedly connected to the outer wall of the collecting barrel 1 by welding, and the insulating bottom plate sleeve 10 and the insulating sleeve 9 are relatively fixedly connected by one or more bolts.

[0033] Preferably, a lower insulating cover 11 is provided at the upper end of the insulating sleeve 9 , and an upper insulating cover 12 is sleeved on the upper end of the sealing upper flange 4 . The upper insulating cover 12 is sleeved on the outside of the lower insulating cover 11 .

[0034] It can be understood that since a lower insulating cover 11 is provided at the upper end of the insulating sleeve 9, and an upper insulating cover 12 adapted to the lower insulating cover 11 is provided, the upper insulating cover 12 and the lower insulating cover 11 are relatively tightly fitted, thereby enhancing the sealing of the connection between the sealing lower flange 3 and the sealing upper flange 4.

[0035] Preferably, a sealing insulating sleeve 13 is provided in the middle of the sealing upper flange 4 , and the through electrode 7 is fixedly connected to the sealing upper flange 4 via the sealing insulating sleeve 13 .

[0036] As a preferred method of this embodiment, a sealing insulating sleeve 138 is provided in the middle of the sealing upper flange 4, and the through electrode 7 is passed through the sealing upper flange 4 to achieve a fixed connection with the sealing upper flange 4, thereby making the through electrode 7 sealed and fixedly arranged at the position of the central axis of the collecting barrel 1.

[0037] Preferably, there are more than two sealing bolts 5 in the circumferential direction of the sealing upper flange 4, and the sealing bolts 5 pass through the upper insulating cover 12, the sealing upper flange 4 and the sealing lower flange 3 in sequence. The lower insulating cover 11 is provided with connection holes 14 near the corresponding sealing bolts.

[0038] It can be understood that there are multiple sealing bolts 5 arranged in the circumferential direction of the sealing upper flange 4, and the multiple sealing bolts 5 can be evenly distributed in the circumferential direction, wherein one sealing bolt 5 can pass through the upper insulating cover 12, the sealing upper flange 4 and the sealing lower flange 3 in sequence to perform relative sealing and locking on the corresponding components. As an optional embodiment, the bottom of the sealing bolt 5 may not be threadedly connected to the lower insulating cover 11, but a connecting hole 14 is provided at a position of the lower insulating cover 11 near the corresponding sealing bolt 5, providing an option for the sealing bolt 5 to perform relative fixed connection to the lower insulating cover 11.

[0039] Preferably, a shielding cover 15 is provided on the outside of the upper insulating cover 12 , and the shielding cover 15 is detachably connected to the upper insulating cover 12 via the sealing bolts 5 , and the air inlet connector 6 is provided through the shielding cover 15 .

[0040] Since the shielding cover 15 is provided outside the upper insulating cover 12 , the entire upper end of the collecting barrel 1 can be shielded to avoid affecting the ionization environment inside the collecting barrel 1 .

[0041] Preferably, an annular groove 16 is provided on the upper end surface of the sealing lower flange 3 , an insulating gasket 17 is provided between the sealing lower flange 3 and the sealing upper flange 4 , and the insulating gasket 17 is disposed in the annular groove 16 .

[0042] As a preferred embodiment of this invention, refer to Figure 2 In order to improve the sealing performance of the relative connection between the sealing lower flange 3 and the sealing upper flange 4, an annular groove 16 is provided on the upper end surface of the sealing lower flange 3, which strengthens the sealing performance of the insulating gasket 17 after the sealing lower flange 3 and the sealing upper flange 4 are tightly connected.

[0043] Preferably, a first insulating gasket 18 is provided between the sealing insulating sleeve 13 and the sealing upper flange 4 , and a second insulating gasket 19 is provided between the through electrode 7 and the sealing insulating sleeve 13 .

[0044] It can be understood that since corresponding sealing insulation gaskets 17 are arranged between the sealing insulation sleeve 13, the sealing upper flange 4 and the through electrode 7, the sealing performance at the installation position is improved. More specifically, the sealing performance between the sealing insulation sleeve 13 and the sealing upper flange 4 is improved by the first insulating gasket 18, and the sealing performance between the through electrode 7 and the sealing insulation sleeve 13 is improved by the second insulating gasket 19.

[0045] The working principle and working process of this utility model:

[0046] The ionization chamber for tritium gas measurement provided by the present invention, when in use, allows tritium gas that needs to be ionized to enter the collecting barrel 1 through the air inlet connector 6, and the tritium gas is ionized under the action of the internally arranged through-electrode 7, and the ionized gas is discharged from the air outlet pipe 2. The arrangement of the device provides a working environment for ionizing the tritium gas, so that the tritium gas is ionized in the process of passing through the collecting barrel 1. More specifically, since a sealing lower flange 3 is provided at the upper end of the collecting barrel 1, and the air inlet connector 6 and the through-electrode 7 are fixedly arranged on the external sealing upper flange 4, the air inlet connector 6 and the through-electrode 7 are sealed and installed in the collecting barrel 1. Then, the tritium gas that needs to be ionized enters the collecting barrel 1 through the air inlet connector 6, is ionized, and then is discharged from the air outlet pipe 2. The better sealing performance of the entire device realizes efficient ionization of the tritium gas in a sealed environment.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An ionization chamber for tritium gas measurement, characterized in that: include: A collecting barrel (1), wherein the upper end of the collecting barrel (1) is open, and the lower end of the collecting barrel (1) is provided with an air outlet pipe (2); A sealing lower flange (3), wherein the sealing lower flange (3) is fixedly arranged on the upper end of the collecting barrel (1); A sealing upper flange (4), wherein the sealing upper flange (4) is detachably connected to the sealing lower flange (3) via sealing bolts (5); and The sealing upper flange (4) is provided with an air inlet joint (6) and a through electrode (7), and the through electrode (7) is vertically arranged at the position of the central axis of the collection barrel (1).

2. The ionization chamber for tritium gas measurement according to claim 1, characterized in that: An insulating sleeve (8) is provided on the outside of the collection barrel (1), and the insulating sleeve (8) comprises an insulating sleeve (9) sleeved on the side of the collection barrel (1) and an insulating bottom plate sleeve (10) provided on the bottom of the collection barrel (1), and the insulating bottom plate sleeve (10) and the insulating sleeve (9) are detachably connected.

3. The ionization chamber for tritium gas measurement according to claim 2, characterized in that: The upper end of the insulating sleeve (9) is provided with a lower insulating cover (11), the upper end of the sealing upper flange (4) is sleeved with an upper insulating cover (12), and the upper insulating cover (12) is sleeved on the outside of the lower insulating cover (11).

4. The ionization chamber for tritium gas measurement according to claim 3, characterized in that: A sealing insulating sleeve (13) is provided in the middle of the sealing upper flange (4), and the through electrode (7) is fixedly connected to the sealing upper flange (4) via the sealing insulating sleeve (13).

5. The ionization chamber for tritium gas measurement according to claim 4, characterized in that: More than two sealing bolts (5) are provided in the circumferential direction of the sealing upper flange (4), and the sealing bolts (5) pass through the upper insulating cover (12), the sealing upper flange (4) and the sealing lower flange (3) in sequence. The lower insulating cover (11) is provided with connection holes (14) near corresponding sealing bolts.

6. The ionization chamber for tritium gas measurement according to claim 5, characterized in that: A shielding cover (15) is provided outside the upper insulating cover (12), the shielding cover (15) is detachably connected to the upper insulating cover (12) via the sealing bolts (5), and the air inlet connector (6) is provided through the shielding cover (15).

7. The ionization chamber for tritium gas measurement according to claim 1, characterized in that: An annular groove (16) is provided on the upper end surface of the sealing lower flange (3), an insulating gasket (17) is provided between the sealing lower flange (3) and the sealing upper flange (4), and the insulating gasket (17) is arranged in the annular groove (16).

8. The ionization chamber for tritium gas measurement according to claim 5, characterized in that: A first insulating gasket (18) is provided between the sealing insulating sleeve (13) and the sealing upper flange (4), and a second insulating gasket (19) is provided between the through electrode (7) and the sealing insulating sleeve (13).

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