Inert gas accident ionization chamber monitor for main steam pipeline

Abstract

The invention relates to the technical field of main steam pipeline inert gas radiation monitoring, and provides a main steam pipeline inert gas accident ionization chamber monitor which comprises a monitor body, an inflation nozzle, a side baffle, a mounting plate, a sliding block, a clamping plate and a connecting component. The charging connector is communicated with the monitor body and is used for being connected with an external charging pipeline; the side baffle and the mounting plate are arranged on one side of the monitor body and are respectively positioned on two opposite sides of the charging connector. By arranging the clamping teeth, the inflation pipeline can be clamped and fixed, so that the connection stability of the inflation nozzle is ensured, meanwhile, when the inflation pipeline is pulled outwards under stress, even if the inflation pipeline moves relative to the clamping teeth, due to the fact that a pipeline between the inflation nozzle and the clamping teeth is bent, stable connection between the inflation pipeline and the inflation nozzle can still be ensured, and the inflation pipeline is prevented from being damaged. The connection stability of the monitor connected with an external inflation pipeline is improved, and the monitor is convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of main steam pipeline inert gas radiation monitoring, in particular to a main steam pipeline inert gas accident ionization chamber monitor. Background Art

[0002] The Main Steam Pipe Inert Gas Accident Ionization Chamber Monitor is a specialized device used to monitor inert gas leaks within the main steam pipes of nuclear power plants or other nuclear facilities. It includes two monitoring channels to continuously measure the activity concentration of radioactive substances in the two main steam pipes.

[0003] The main steam line inert gas radiation monitor also serves as a post-accident monitoring device, and the equipment in the corresponding monitoring channel requires environmental qualification. The detector of the main steam line inert gas radiation monitor is an ionization chamber installed next to the main steam line and shielded to minimize the impact of background radiation, thereby ensuring the detector's sensitivity and minimum detectable range.

[0004] The utility model, with announcement number CN210090686U, proposes a main steam pipeline radiation monitoring device, comprising a 16N radiation monitor and an inert gas radiation detector disposed within the main steam pipeline. The 16N radiation monitor determines steam generator leakage by monitoring the 16N nuclide; the inert gas radiation detector monitors the total activity concentration of 85Kr and 133Xe in the main steam pipeline; a 16N on-site radiation processing module connected to the 16N radiation monitor; and an inert gas on-site radiation processing module connected to the inert gas radiation detector. However, the aforementioned monitoring device is inconvenient for bending and limiting the connected inflation pipe when connecting the inflation nozzle. Conventional methods clamp the inflation pipe. Since the inflation nozzle and the pipe at the clamping point are in a straightened state, loosening the clamping point will still cause the inflation nozzle to malfunction. Therefore, this solution proposes a main steam pipeline inert gas accident ionization chamber monitor to address the above-mentioned problem. Summary of the Invention

[0005] In view of this, the present invention proposes a main steam pipeline inert gas accident ionization chamber monitor to solve the technical problem that when the conventional inflation pipeline is clamped, the inflation nozzle and the pipeline at the clamping point are in a straightened state, and if the clamping point is loose, it will still cause abnormal connection of the inflation nozzle.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a main steam pipeline inert gas accident ionization chamber monitor, including a monitor body, an inflation nozzle, a side baffle, a mounting plate, a slider, a clamping plate and a connecting component, wherein: The monitor body is used to monitor the radiation amount of the inert gas, and the inflation nozzle is connected to the monitor body and is used to connect to an external inflation pipeline; The side baffle and the mounting plate are both arranged on one side of the monitor body and are respectively located on opposite sides of the inflation nozzle. The side baffle is used to limit the inflation pipe from one side of the inflation pipe. The end of the mounting plate is formed with a first circular head, and the first circular head is provided with a first sliding groove connected to the opposite sides of the mounting plate. A second circular head is formed at the end of the clamping plate, and a second sliding groove that is interconnected is opened between the opposite sides of the clamping plate, the slider is slidably connected to the first sliding groove and the second sliding groove, and a clamping tooth is provided on the side of the clamping plate close to the inflation nozzle; The connecting component is used to locate the position of the clamping plate relative to the monitor body.

[0007] On the basis of the above technical solution, preferably, the connecting component includes a connecting plate, wherein: A connecting plate is provided on the clamping plate and is provided with an assembly hole for the bolts to pass through; A first bolt hole is provided on the monitor body. When the connecting plate slides to the side of the mounting plate close to the inflation nozzle, the first bolt hole is positioned opposite to the assembly hole. The first bolt hole is used for threaded connection of the bolt.

[0008] On the basis of the above technical solution, preferably, the interior of the monitoring instrument body is provided with a monitoring core, a collecting electrode cylinder and a high-voltage electrode cylinder, wherein, The collecting electrode cylinder is arranged on the inner side of the high-voltage electrode cylinder, and the monitoring core is arranged on the inner side of the collecting electrode cylinder. The monitoring core contacts the gas to be measured and generates initial ion pairs through the radioactive ionization effect. The collecting electrode cylinder is used to attract positive ions and form a measurable ionization current. The high-voltage electrode cylinder is used to apply positive high voltage to establish a strong electric field and improve the ion collection efficiency.

[0009] On the basis of the above technical solution, preferably, the outer shell of the monitor body and the high-voltage electrode cylinder are both made of stainless steel, and the collector cylinder is made of aluminum.

[0010] On the basis of the above technical solution, preferably, the thickness of the monitor body shell is t1, the thickness of the high-voltage electrode cylinder is t2, 1.3mm≤t1≤1.7mm, and 0.8mm≤t2≤1.2mm.

[0011] On the basis of the above technical solution, preferably, the distance between the collecting electrode cylinder and the high-voltage electrode cylinder is L, 28mm≤L≤38mm.

[0012] On the basis of the above technical solution, preferably, it further comprises a plurality of electrode front end fixing seats, wherein, Multiple electrode front end fixing seats are all arranged inside the monitor body, and a sealing slot is opened on the electrode front end fixing seat. The collector cylinder and the high-voltage electrode cylinder are respectively inserted into the interior of each of the sealing slots, and an aluminum wire is arranged between the sealing slot and the collector cylinder or the high-voltage electrode cylinder.

[0013] On the basis of the above technical solution, preferably, it further includes an electrode tail end fixing seat, wherein, The electrode tail end fixing seat is arranged inside the monitor body and is located on the side of the collector cylinder and the high-voltage pole cylinder away from the electrode front end fixing seat. The electrode tail end fixing seat is connected to the collector cylinder and the high-voltage pole cylinder through a spring.

[0014] On the basis of the above technical solution, preferably, it further includes screws and a tail end cover, wherein, A second bolt hole is formed at the end of the monitoring core, and the screw passes through the electrode tail end fixing seat and is threadedly connected to the second bolt hole; The tail end cover is detachably connected to the end of the monitor body, and a protective cavity is formed between the tail end cover and the electrode tail end fixing seat, and the screw is located inside the protective cavity.

[0015] On the basis of the above technical solution, preferably, it further includes an amplification box, an on-site processing display unit and an electrical junction box, wherein, an amplifier box, electrically connected to the monitor body, for amplifying the monitoring signal transmitted from the monitor body and performing voltage-frequency conversion; An on-site processing and display unit is electrically connected to the amplifying box and is used to receive the pulse signal transmitted from the amplifying box and perform analysis and processing; The electrical junction box is electrically connected to the local processing display unit and is used to receive the analysis signal transmitted from the local processing display unit and transmit the analysis signal to an external remote computer system.

[0016] The main steam pipeline inert gas accident ionization chamber monitor of the present invention has the following beneficial effects compared with the prior art: (1) The monitor of the main steam pipeline inert gas accident ionization chamber monitor of the present application can clamp and fix the inflation pipe by setting clamping teeth to ensure the connection stability of the inflation nozzle. At the same time, when the inflation pipe is pulled outward by force, even if the inflation pipe moves relative to the clamping teeth, the pipe between the inflation nozzle and the clamping teeth is bent, so the stable connection between the inflation pipe and the inflation nozzle can still be ensured, thereby improving the connection stability of the monitor of the present application to the external inflation pipe and facilitating use.

[0017] (2) By setting the distance between the collecting electrode cylinder and the high-voltage electrode cylinder to be between 28mm and 38mm, and in a specific implementation, the distance between the collecting electrode cylinder and the high-voltage electrode cylinder is 33mm, such a design ensures the voltage withstand capability of the monitoring instrument of the application while minimizing the distance between the collecting electrode cylinder and the high-voltage electrode cylinder, thereby reducing the processing error of the collecting electrode cylinder and the high-voltage electrode cylinder and facilitating use. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 FIG. 1 is a sectional view of the monitoring instrument body of the main steam pipeline inert gas accident ionization chamber monitoring instrument of the present application; Figure 2 FIG. 2 is a schematic view of the monitoring instrument body of the main steam pipeline inert gas accident ionization chamber monitoring instrument of the present application; Figure 1 FIG. 3 is an enlarged schematic view of position A shown in FIG. 2; Figure 3 FIG. 4 is a schematic view of the state of the clamping plate of the main steam pipeline inert gas accident ionization chamber monitoring instrument of the present application when clamping the external inflation pipeline; Figure 4 FIG. 5 is a schematic view of the connection mode of the monitoring instrument body, the magnifying box and the on-site processing display unit of the main steam pipeline inert gas accident ionization chamber monitoring instrument of the present application.

[0020] In the figure: 1, monitoring instrument body; 11, first bolt hole; 2, inflation nozzle; 31, side baffle; 32, mounting plate; 321, first circular head; 322, first sliding groove; 33, sliding block; 34, clamping plate; 341, second circular head; 342, second sliding groove; 35, clamping tooth; 4, connecting component; 41, connecting plate; 411, assembly hole; 51, monitoring core body; 511, second bolt hole; 52, collecting electrode cylinder; 53, high-voltage electrode cylinder; 61, electrode front end fixing seat; 611, sealing slot; 62, aluminum wire; 71, electrode tail end fixing seat; 72, spring; 81, screw; 82, tail end cover; 821, protection cavity; 91, magnifying box; 92, on-site processing display unit; 93, electrical junction box. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] As shown in Figures 1 to 4 The main steam pipeline inert gas accident ionization chamber monitor of the present application comprises a monitor body 1, an inflation nozzle 2, a side baffle 31, a mounting plate 32, a sliding block 33, a clamping plate 34 and a connecting component 4. The monitor body 1 is used for monitoring the radiation amount of inert gas, and the inflation nozzle 2 is communicated on the monitor body 1 and used for connecting an external inflation pipeline. The side baffle 31 and the mounting plate 32 are both arranged on one side of the monitor body 1 and located on opposite sides of the inflation nozzle 2 respectively. The side baffle 31 is used for limiting the inflation pipeline from one side of the inflation pipeline. The end of the mounting plate 32 is formed with a first circular head 321, and a first sliding groove 322 is formed in the first circular head 321 and communicated to opposite sides of the mounting plate 32. The end of the clamping plate 34 is formed with a second circular head 341, and a second sliding groove 342 is formed in the clamping plate 34 and communicated between opposite sides of the clamping plate 34. The sliding block 33 is slidably connected with the first sliding groove 322 and the second sliding groove 342. The side of the clamping plate 34 close to the inflation nozzle 2 is provided with clamping teeth 35. The connecting component 4 is used for positioning the position of the clamping plate 34 relative to the monitor body 1.

[0023] In specific implementation, the monitor body 1 is a cylindrical barrel, and two armored cable welding sleeves are arranged on the end of the monitor body 1. When the clamping plate 34 is slid to the side of the mounting plate 32 close to the inflation nozzle 2, the clamping teeth 35 cooperate with the side baffle 31 to clamp the external inflation pipeline.

[0024] In specific implementation, the external inflation pipeline is connected with the inflation nozzle 2 in plug-in connection to convey the inert gas to be monitored to the monitor body 1. After the plug-in connection is completed, the clamping plate 34 is adjusted to slide around the first circular head 321 to the side of the mounting plate 32 close to the inflation nozzle 2. At this time, the sliding block 33 slides from one side of the first circular head 321 to the other side, and slides from one side of the clamping plate 34 to the other side. The clamping teeth 35 arranged on the clamping plate 34 cooperate with the side baffle 31 to clamp the inflation pipeline. When the sliding block 33 slides on the other side of the clamping plate 34, the clamping teeth 35 drive the clamped inflation pipeline to move to the side close to the monitor body 1. The pipeline between the inflation nozzle 2 and the clamping teeth 35 is bent.

[0025] With this design, the clamping teeth 35 can clamp and fix the inflation pipe to ensure the connection stability of the inflation nozzle 2. At the same time, when the inflation pipe is pulled outward by force, even if the inflation pipe moves relative to the clamping teeth 35, the pipe between the inflation nozzle 2 and the clamping teeth 35 is bent, so the stable connection between the inflation pipe and the inflation nozzle 2 can still be ensured, thereby improving the connection stability of the monitor of this application to the external inflation pipe and facilitating use.

[0026] like Figure 2 As shown, as a preferred embodiment, the connecting component 4 includes a connecting plate 41, wherein the connecting plate 41 is arranged on the clamping plate 34, and an assembly hole 411 for the bolt to pass through is opened on the connecting plate 41; a first bolt hole 11 is opened on the monitor body 1, and when the connecting plate 41 slides to the side of the mounting plate 32 close to the inflation nozzle 2, the first bolt hole 11 is relative to the assembly hole 411, and the first bolt hole 11 is used for the bolt threaded connection.

[0027] Specifically, when the clamping plate 34 is slid to the side of the mounting plate 32 close to the inflation nozzle 2, the bolt is passed through the assembly hole 411 and threadedly connected to the inner side of the first bolt hole 11. The bolt is rotated to tighten the connecting plate 41 and the monitor body 1, so that the clamping teeth 35 drive the inflation pipe to move, which is convenient for use.

[0028] As a preferred embodiment, Figure 1 As shown, the interior of the monitor body 1 is provided with a monitoring core 51, a collecting electrode cylinder 52 and a high-voltage electrode cylinder 53, wherein the collecting electrode cylinder 52 is arranged on the inner side of the high-voltage electrode cylinder 53, and the monitoring core 51 is arranged on the inner side of the collecting electrode cylinder 52. The monitoring core 51 contacts the gas to be measured and generates initial ion pairs through the radioactive ionization effect. The collecting electrode cylinder 52 is used to attract positive ions and form a measurable ionization current. The high-voltage electrode cylinder 53 is used to apply positive high voltage to establish a strong electric field and improve the ion collection efficiency.

[0029] The outer shell of the monitor body 1 and the high-voltage electrode cylinder 53 are both made of stainless steel, and the collector cylinder 52 is made of aluminum.

[0030] In a specific implementation, a shielding layer is provided on the outer side of the monitor body 1 to shield external radiation, so as to improve the accuracy of the monitoring result of the monitor body 1 .

[0031] The monitor body 1 is embedded with a 241Am α-radiation source. This ensures that even in the absence of external radiation, the detector can output a stable, weak current signal, rather than no signal at all. This allows the detector to detect damage or a channel failure, as the measured current is zero, providing a failure alarm signal and facilitating maintenance of the monitor body 1.

[0032] The thickness of the outer shell of the monitor body 1 is t1, the thickness of the high-voltage pole cylinder 53 is t2, 1.3 mm ≤ t1 ≤ 1.7 mm, and 0.8 mm ≤ t2 ≤ 1.2 mm.

[0033] By setting 1.3mm≤t1≤1.7mm and 0.8mm≤t2≤1.2mm, when t1 is 1.3mm and t2 is 0.8mm, it is suitable for weight-sensitive and mild environments, with the lowest material cost and convenient processing. Ensuring t1 is greater than or equal to 1.3mm is to ensure that the monitor body 1 has good radiation isolation effect. Ensuring t2 is greater than or equal to 0.8mm is to improve the structural strength of the high-voltage pole cylinder 53.

[0034] In some embodiments, the thickness of the outer shell of the monitor body 1 is 1.5 mm, and the thickness of the high-voltage pole cylinder 53 is 1 mm.

[0035] This design allows for a thinner barrel (1mm) that reduces interelectrode dielectric thickness, enhancing internal electric field strength and improving ionization efficiency. The thin-walled structure also reduces sensor weight while minimizing material obstruction to ionized particles, ensuring high sensitivity. The thicker outer shell (1.5mm) provides enhanced shock and vibration resistance, adapting to the harsh environment of nuclear power plant pipeline bypasses. The slightly thicker shell also attenuates ambient background radiation, such as gamma rays, to reduce noise interference.

[0036] The distance between the collecting electrode cylinder 52 and the high voltage electrode cylinder 53 is L, 28 mm ≤ L ≤ 38 mm.

[0037] In some embodiments, the spacing between the collector cylinder 52 and the high-voltage pole cylinder 53 is 33 mm. This design minimizes the spacing between the collector cylinder 52 and the high-voltage pole cylinder 53 while ensuring the voltage withstand capability of the monitor of the present application, thereby reducing the processing error of the collector cylinder 52 and the high-voltage pole cylinder 53 and facilitating use. By setting 28 mm ≤ L, in order to improve the voltage withstand capability of the monitor of the present application, by setting L ≤ 38 mm, in order to reduce the processing error of the collector cylinder 52 and the high-voltage pole cylinder 53 of the present application.

[0038] like Figure 1 As shown, as a preferred embodiment, it also includes a plurality of electrode front end fixing seats 61, wherein the plurality of electrode front end fixing seats 61 are all arranged inside the monitor body 1, and a sealing slot 611 is opened on the electrode front end fixing seat 61, and the collector cylinder 52 and the high-voltage pole cylinder 53 are respectively inserted into the interior of each sealing slot 611, and an aluminum wire 62 is arranged between the sealing slot 611 and the collector cylinder 52 or the high-voltage pole cylinder 53.

[0039] It also includes an electrode tail end fixing seat 71, wherein the electrode tail end fixing seat 71 is arranged inside the monitor body 1 and is located on the side of the collector cylinder 52 and the high-voltage pole cylinder 53 away from the electrode front end fixing seat 61, and the electrode tail end fixing seat 71 is connected to the collector cylinder 52 and the high-voltage pole cylinder 53 through a spring 72.

[0040] By setting the electrode tail end fixing seat 71 and connecting it with the collector cylinder 52 and the high-voltage pole cylinder 53 through the spring 72, the collector cylinder 52 and the high-voltage pole cylinder 53 have a movable space after connection. When the collector cylinder 52 and the high-voltage pole cylinder 53 are accidentally dislocated by force, the connection stability of the collector cylinder 52 and the high-voltage pole cylinder 53 can be ensured. At the same time, the spring 72 can reset the collector cylinder 52 and the high-voltage pole cylinder 53, which is convenient for use.

[0041] It also includes a screw 81 and a tail end cover 82, wherein a second bolt hole 511 is opened at the end of the monitoring core 51, and the screw 81 passes through the electrode tail end fixing seat 71 and is threadedly connected to the second bolt hole 511; the tail end cover 82 is detachably connected to the end of the monitor body 1, and a protective cavity 821 is formed between the tail end cover 82 and the electrode tail end fixing seat 71, and the screw 81 is located on the inner side of the protective cavity 821.

[0042] By providing the tail end cover 82 , the cavity wall of the protective cavity 821 can shield and protect the screw 81 , thereby increasing the connection stability of the screw 81 .

[0043] like Figure 4 As shown, as a preferred embodiment, it also includes an amplifier box 91, an on-site processing display unit 92 and an electrical junction box 93, wherein the amplifier box 91 is electrically connected to the monitor body 1, and is used to amplify the monitoring signal transmitted from the monitor body 1 and perform voltage-frequency conversion; the on-site processing display unit 92 is electrically connected to the amplifier box 91, and is used to receive the pulse signal transmitted from the amplifier box 91 and perform analysis and processing; the electrical junction box 93 is electrically connected to the on-site processing display unit 92, and is used to receive the analysis signal transmitted from the on-site processing display unit 92 and transmit the analysis signal to an external remote computer system.

[0044] In the specific implementation, the amplification box 91 is the front-end electronics unit RAB. By setting the alarm threshold, the on-site processing display unit 92LPDU can give different alarm signals in different radiation fields. When the monitored radiation information exceeds the threshold, the on-site processing display unit 92LPDU issues a warning to facilitate external processing personnel to carry out corresponding processing in a timely manner, which is convenient for use.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A main steam pipeline inert gas accident ionization chamber monitor, characterized by: The device comprises a monitor body (1), an air filling nozzle (2), a side baffle (31), a mounting plate (32), a slider (33), a clamping plate (34) and a connecting component (4), wherein: The monitor body (1) is used to monitor the radiation amount of the inert gas, and the inflation nozzle (2) is connected to the monitor body (1) and is used to connect to an external inflation pipeline; The side baffle (31) and the mounting plate (32) are both arranged on one side of the monitor body (1) and are respectively located on opposite sides of the inflation nozzle (2); the side baffle (31) is used to limit the inflation pipe from one side of the inflation pipe; a first circular head (321) is formed at the end of the mounting plate (32), and a first chute (322) is formed on the first circular head (321) and is connected to the opposite sides of the mounting plate (32); A second circular head (341) is formed at the end of the clamping plate (34), and a second sliding groove (342) that is interconnected is provided between two opposite sides of the clamping plate (34), the slider (33) is slidably connected to the first sliding groove (322) and the second sliding groove (342), and a clamping tooth (35) is provided on a side of the clamping plate (34) close to the inflation nozzle (2); The connecting component (4) is used to locate the position of the clamping plate (34) relative to the monitor body (1).

2. The main steam pipeline inert gas accident ionization chamber monitor according to claim 1, characterized in that: The connecting component (4) comprises a connecting plate (41), wherein: A connecting plate (41) is arranged on the clamping plate (34), and an assembly hole (411) for a bolt to pass through is provided on the connecting plate (41); A first bolt hole (11) is provided on the monitor body (1). When the connecting plate (41) slides to a side of the mounting plate (32) close to the inflation nozzle (2), the first bolt hole (11) is aligned with the assembly hole (411). The first bolt hole (11) is used for threaded connection of the bolt.

3. The main steam pipeline inert gas accident ionization chamber monitor according to claim 1, characterized in that: The monitoring instrument body (1) is provided with a monitoring core (51), a collecting electrode cylinder (52) and a high-voltage electrode cylinder (53) inside, wherein: The collecting electrode cylinder (52) is arranged on the inner side of the high-voltage electrode cylinder (53), and the monitoring core (51) is arranged on the inner side of the collecting electrode cylinder (52). The monitoring core (51) contacts the gas to be measured and generates initial ion pairs through the radioactive ionization effect. The collecting electrode cylinder (52) is used to attract positive ions and form a measurable ionization current. The high-voltage electrode cylinder (53) is used to apply positive high voltage to establish a strong electric field and improve the ion collection efficiency.

4. The main steam pipeline inert gas accident ionization chamber monitor according to claim 3, characterized in that: The outer shell of the monitor body (1) and the high-voltage electrode cylinder (53) are both made of stainless steel, and the collector cylinder (52) is made of aluminum.

5. The main steam pipeline inert gas accident ionization chamber monitor according to claim 3, characterized in that: The thickness of the outer shell of the monitor body (1) is t1, the thickness of the high-voltage pole cylinder (53) is t2, 1.3mm≤t1≤1.7mm, and 0.8mm≤t2≤1.2mm.

6. The main steam pipeline inert gas accident ionization chamber monitor according to claim 3, characterized in that: The distance between the collecting electrode cylinder (52) and the high-voltage electrode cylinder (53) is L, 28 mm ≤ L ≤ 38 mm.

7. The main steam pipeline inert gas accident ionization chamber monitor according to claim 3, characterized in that: It also includes a plurality of electrode front end fixing seats (61), wherein: A plurality of electrode front end fixing seats (61) are all arranged inside the monitor body (1), and a sealing slot (611) is provided on the electrode front end fixing seat (61). The collector cylinder (52) and the high-voltage cylinder (53) are respectively inserted into the interior of each of the sealing slots (611), and an aluminum wire (62) is provided between the sealing slot (611) and the collector cylinder (52) or the high-voltage cylinder (53).

8. The main steam pipeline inert gas accident ionization chamber monitor according to claim 7, characterized in that: It also includes an electrode tail end fixing seat (71), wherein The electrode tail end fixing seat (71) is arranged inside the monitor body (1) and is located on a side of the collector cylinder (52) and the high-voltage cylinder (53) away from the electrode front end fixing seat (61). The electrode tail end fixing seat (71) is connected to the collector cylinder (52) and the high-voltage cylinder (53) via a spring (72).

9. The main steam pipeline inert gas accident ionization chamber monitor according to claim 8, characterized in that: Also included are screws (81) and a tail end cap (82), wherein: A second bolt hole (511) is provided at the end of the monitoring core (51), and the screw (81) passes through the electrode tail end fixing seat (71) and is threadedly connected to the second bolt hole (511); The tail end cover (82) is detachably connected to the end of the monitor body (1), and a protective cavity (821) is formed between the tail end cover (82) and the electrode tail end fixing seat (71), and the screw (81) is located inside the protective cavity (821).

10. The main steam pipeline inert gas accident ionization chamber monitor according to claim 1, characterized in that: It also includes an amplification box (91), an on-site processing display unit (92) and an electrical connection box (93), wherein: an amplifier box (91), electrically connected to the monitor body (1), for amplifying the monitoring signal transmitted from the monitor body (1) and performing voltage-frequency conversion; An on-site processing display unit (92) is electrically connected to the amplifying box (91) and is used to receive the pulse signal transmitted from the amplifying box (91) and perform analysis and processing; An electrical junction box (93) is electrically connected to the local processing display unit (92) and is used to receive the analysis signal transmitted from the local processing display unit (92) and transmit the analysis signal to an external remote computer system.

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