Self-powered neutron detector and manufacturing device and manufacturing process thereof

Abstract

The invention relates to the technical field of neutron detection equipment, in particular to a self-powered neutron detector as well as a manufacturing device and a manufacturing process thereof, and aims at solving the problem of ensuring that an insulator completely isolates contact between an emitter and a collector when an existing self-powered neutron detector is manufactured. The self-powered neutron detector comprises a collector which is in the shape of a hollow test tube with one closed end and one open end; the emitter is arranged in the collecting body and is completely separated from the collecting body; the insulator is arranged in the collecting body, fills a gap between the emitter and the inner wall of the collecting body, and has electrical insulation property; one end of the wire is arranged at the opening end of the collecting body, two wire cores are arranged in the wire, one wire core penetrates through the insulator to be electrically connected with the emitter, the other wire core serves as a background signal core wire, and the two wire cores are wound to form a stranded wire structure.

Description

Technical Field

[0001] The present invention relates to the technical field of neutron detection equipment, and in particular to a self-powered neutron detector and a manufacturing device and a manufacturing process thereof. Background Art

[0002] Self-powered detectors are widely used in the core measurement system of nuclear power plants. These detectors can provide real-time neutron flux values ​​in the core, which are used to calculate and analyze the three-dimensional power distribution diagram of the core, as well as to calculate the changes in the enthalpy of the primary coolant, the core burnup distribution, the core coolant flow rate and other parameters.

[0003] The core part of the self-powered neutron detector, the emitter, is usually made of metals such as cobalt, cadmium, rhodium, and vanadium. Since the self-powered neutron detector is usually more than ten meters long and only a few millimeters in outer diameter, the structure is delicate and easy to deform. For signal compensation, a background signal line is added, and it is twisted with the detection signal line, which increases the difficulty of manufacturing and installation. In particular, in order to ensure that the insulator completely isolates the contact between the emitter and the collector, once the insulator is not completely insulated, it will cause the self-powered neutron detector to have a large detection error and cause the self-powered neutron detector to fail. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a self-powered neutron detector and its manufacturing device and manufacturing process, so as to solve the problem of ensuring that the insulator completely isolates the contact between the emitter and the collector when manufacturing the existing self-powered neutron detector.

[0005] Based on the above purpose, the present invention provides a self-powered neutron detector, including a collector, which is in the shape of a test tube with one end closed and the other end open and hollow inside; an emitter, which is arranged inside the collector and is completely separated from the collector; an insulator, which is arranged inside the collector and fills the gap between the emitter and the inner wall of the collector and has electrical insulation; a wire, one end of which is arranged on the open end of the collector, and has two wire cores inside, one of which passes through the insulator and is electrically connected to the emitter, and the other wire core serves as a background signal core wire, and the two wire cores are twisted together to form a twisted wire structure.

[0006] As a further improvement of the present application, the insulator is high-purity aluminum oxide.

[0007] A manufacturing device for a self-powered neutron detector, used for manufacturing the self-powered neutron detector described in the claim, comprising a basic mounting seat, a mounting groove is provided at the bottom, the bottom of the collector is placed on the mounting groove to wait for the installation of the emitter and the insulator; a crane is arranged above the basic mounting seat; a first hanging motor is arranged on the crane; a guide sinker is suspended below the first hanging motor by a hanging rope, and the first hanging motor drives the guide sinker to move up and down; the guide sinker is a tubular structure, and a movable blocking block is provided at the lower end thereof, and the emitter is placed inside the guide sinker; the guide sinker carries the emitter into the collector, and fills the collector with high-purity alumina powder or particles. After filling to the height of the bottom of the guide sinker, the movable blocking block is opened, so that the bottom of the emitter drops to the high-purity alumina, and continues to fill with high-purity alumina. The guide sinker is pulled upward while filling, and finally the guide sinker is completely removed, and the emitter is fixed at a set position in the collector to compact the high-purity alumina powder or particles.

[0008] As a further improvement of the present application, a telescopic probe rod is provided at the bottom of the guide immersed tube, and the bottom of the telescopic probe rod is in contact with the bottom of the collecting body, thereby limiting the height of the guide immersed tube within the collecting body; more than three transverse probe rods are provided on the side of the guide immersed tube, and one end of the transverse probe rod is connected to the side of the guide immersed tube by a pin shaft, and the other end is in contact with the inner wall of the collecting body, thereby limiting the horizontal position of the guide immersed tube within the collecting body; a torsion spring is also provided on the pin shaft, and the two ends of the torsion spring are respectively connected to the transverse probe rod and the side of the guide immersed tube.

[0009] As a further improvement of the present application, the crane is also provided with a second suspension motor, and the manufacturing device also includes a vibration ring, which is sleeved on the outside of the collecting body and suspended under the second suspension motor by a suspension rope, and the vibration ring promotes the filling of high-purity alumina powder or particles through vibration; the vibration ring moves upward as the high-purity alumina is filled.

[0010] As a further improvement of the present application, the vibration ring includes a ring body, a plurality of vibration bodies arranged on the inner wall of the ring body, and an elastic member connecting the vibration body and the ring body. The inner diameter of the ring body is much larger than the outer diameter of the collecting body. After the vibration body compresses the elastic member, it contacts the outer wall of the collecting body, and the vibration body vibrates by itself.

[0011] As a further improvement of the present application, more than three stabilizing countersunk holes are further provided on the basic mounting seat, and the stabilizing countersunk holes are evenly distributed on a circle; a vertical telescopic rod is provided inside the stabilizing countersunk hole, and a stabilizing column is provided at the upper end of the vertical telescopic rod, and the stabilizing column is gap-matched with the stabilizing countersunk hole; when the bottom of the collecting body is placed on the mounting groove, the vertical telescopic rod is in the shortest state, and the stabilizing column is completely retracted in the stabilizing countersunk hole, and as the vibration ring is lifted, the vertical telescopic rod is synchronously extended, and the long end side of the stabilizing column contacts the bottom side of the collecting body, and there is a gap directly between the top of the stabilizing column and the bottom of the vibration ring, and the stabilizing column stably supports the collecting body.

[0012] As a further improvement of the present application, the manufacturing device is further provided with a guiding device, including a trigger unit arranged at the bottom of the mounting groove and an action unit arranged at the top of the stabilizing column; the trigger unit includes a trigger hole arranged at the bottom of the mounting groove, a trigger block arranged in the trigger hole, a trigger spring arranged in the trigger hole, a control hole arranged on the side wall of the trigger hole, a control rod arranged in the control hole and a control spring arranged in the control hole; the control spring controls the control rod to have a tendency to move from the control hole to the trigger block; a control accommodating groove is provided on the side of the trigger block; the action unit includes a guide groove arranged at the top of the stabilizing column, a rocking arm arranged in the guide groove, a guide roller arranged at the top of the rocking arm, and a torsion spring arranged on the rocking arm; The lower part of the rocking arm is arranged on the guide groove through an ear shaft, and the guide groove side wall is provided with an ear shaft hole, the ear shaft is inserted into the ear shaft hole, and the torsion spring is arranged on the ear shaft, and the two ends of the torsion spring are respectively connected to the rocking arm and the ear shaft hole, and the torsion spring makes the rocking arm tend to swing toward the trigger block; the control rod passes through the control hole and enters the guide groove to resist the rocking arm; when the collecting body presses down the trigger block, the trigger block moves downward, and when the control accommodating groove faces the control rod, under the action of the control spring, the control rod partially enters the control accommodating groove and completely withdraws from the guide groove, and under the action of the torsion spring, the rocking arm swings toward the trigger block, and the guide roller contacts the outer wall of the collecting body to preliminarily stabilize the collecting body.

[0013] As a further improvement of the present application, a laterally arranged blocking block adjustment hole is provided at the lower part of the guide immersed tube, a power groove is provided at the bottom of the blocking block adjustment hole, and a swing motor is provided in the power groove; the movable blocking block is cylindrical, arranged in the power groove, and a vertical adjustment groove is provided on the side; a swing rod is provided on the output shaft of the swing motor, a swing block is provided at the free end of the swing rod, and the swing block is inserted into the adjustment groove.

[0014] The manufacturing process of the self-powered neutron detector manufacturing device is as follows:

[0015] Step 100, placing the collection body on the installation groove along the guidance of the guide roller, and tightening the guide device;

[0016] Step 101, electrically connecting the emitter to the core of the wire;

[0017] Step 102, start the swing motor to push the adjustment hole of the blocking block into the inner hole at the bottom of the guide sinker 63;

[0018] Step 103, placing the emitter together with the wire into the guide immersed tube;

[0019] Step 104, extending the telescopic probe rod, unfolding the transverse probe rod, and placing the guide immersed tube together with the launcher and the wire into a set position in the collector;

[0020] Step 105, adjusting the position of the vibrating body according to the outer diameter of the collecting body;

[0021] Step 106, lowering the vibration ring to the lower end of the collecting body;

[0022] Step 200, starting the vibrating body and putting high-purity alumina powder or particles into the collecting body;

[0023] Step 201, as the upper surface of the high-purity aluminum oxide powder or particles is lifted, the vibration ring is lifted to keep the vibration ring at a position 1-3 cm below the upper surface of the high-purity aluminum oxide powder or particles;

[0024] Step 202, as the vibration ring is lifted, the vertical telescopic rod is synchronously extended, and the gap between the top of the stabilizing column and the bottom of the vibration ring is kept stable in size;

[0025] Step 203, when the upper surface of the high-purity aluminum oxide powder or particles is lifted to the lower end surface of the guide sinker, the telescopic probe is retracted into the adjustment hole of the blocking block, the projectile and the wire fall down, and the lower surface of the projectile contacts the high-purity aluminum oxide powder or particles;

[0026] Step 204, continue filling with high-purity alumina powder or particles, as the upper surface of the high-purity alumina powder or particles rises, lift the guide sinker and the vibration ring, keep the lateral probe rod at a certain distance from the upper surface, until the guide sinker is completely separated from the collecting body, and the filling of the high-purity alumina powder or particles is completed;

[0027] Step 205, taking away the filled collector, shrinking the stabilizing column into the stabilizing sink hole, and waiting for the placement and filling of the collector of the next self-powered neutron detector.

[0028] The beneficial effects of the present invention are as follows: by placing the emitter in the middle, the insulator completely isolates the possibility of contact between the emitter and the collector, so that the insulation performance of the emitter is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of a self-powered neutron detector according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic structural diagram of a self-powered neutron detector manufacturing device according to an embodiment of the present invention, in which a collecting body is not placed in a mounting groove;

[0032] Figure 3 This is a schematic structural diagram of a collecting body of a manufacturing device for a self-powered neutron detector according to an embodiment of the present invention being placed in a mounting groove;

[0033] Figure 4 This is a schematic structural diagram of a basic mounting base, a trigger block and a rocking arm of a manufacturing device for a self-powered neutron detector according to an embodiment of the present invention;

[0034] Figure 5 It is a schematic diagram of the top view of the structure of a basic mounting base of a manufacturing device for a self-powered neutron detector according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic structural diagram of a vibration ring of a manufacturing device for a self-powered neutron detector according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the partially enlarged structure of a movable blocking block of a guide immersed tube of a manufacturing device for a self-powered neutron detector according to an embodiment of the present invention.

[0037] The markings in the figure are:

[0038] 1. Conductor; 2. Collector; 3. Insulator; 4. Emitter; 51. Basic mounting seat; 511. Stable countersunk hole; 512. Vertical telescopic rod; 513. Stable column; 52. Mounting groove; 53. Heat sink; 61. Crane; 62. First hanging motor; 63. Guide sinker; 631. Movable blocking block; 632. Telescopic probe rod; 633. Horizontal probe rod; 634. Blocking block adjustment hole; 635. Power slot; 636. Swing motor; 637. Adjustment slot ;638, swing rod;639, swing block;64, suspension rope;65, vibration ring;651, ring body;652, vibration body;653, elastic member;654, adjustment hole;655, telescopic strip;66, second suspension motor;71, trigger hole;72, trigger block;73, trigger spring;74, control hole;75, control rod;76, control spring;77, control accommodating groove;81, guide groove;82, swing rod;83, guide roller;84, ear shaft;. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0040] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] like Figure 1 As shown, a self-powered neutron detector includes a collector 2, which is a test tube-shaped with one end closed and the other end open and hollow inside; an emitter 4, which is arranged inside the collector 2 and is completely separated from the collector 2; an insulator 3, which is arranged inside the collector 2 and fills the gap between the emitter 4 and the inner wall of the collector 2 and has electrical insulation; a wire 1, one end of which is arranged on the open end of the collector 2, and has two wire cores inside, one of which passes through the insulator 3 and is electrically connected to the emitter 4, and the other wire core is used as a background signal core wire, and the two wire cores are twisted together to form a twisted wire structure to improve anti-interference and signal compensation capabilities.

[0042] In order to ensure the insulation performance, the insulator 3 is made of high-purity aluminum oxide.

[0043] like Figure 2 , Figure 3 and Figure 4 As shown, a manufacturing device for a self-powered neutron detector is used to manufacture the self-powered neutron detector according to claim 2, comprising:

[0044] A basic mounting seat 51, with a mounting groove 52 at the bottom, the bottom of the collector 2 is placed on the mounting groove 52 to wait for the emitter 4 and the insulator 3 to be installed;

[0045] A crane 61 is arranged above the base mounting seat 51;

[0046] A first hanging motor 62, arranged on the crane 61;

[0047] The guide immersed tube 63 is suspended below the first suspension motor 62 by a suspension rope 64, and the first suspension motor 62 drives the guide immersed tube 63 to move up and down;

[0048] The guide sinker 63 is a tubular structure, and a movable blocking block 631 is provided at the lower end thereof. The launcher 4 is placed inside the guide sinker 63;

[0049] The guide immersed tube 63 carries the emitter 4 into the collecting body 2, and high-purity alumina powder or particles are filled into the collecting body 2. After filling to the height of the bottom of the guide immersed tube 63, the movable blocking block 631 is opened to make the bottom of the emitter 4 drop onto the high-purity alumina, and continue to fill with high-purity alumina. The guide immersed tube 63 is pulled upward while filling, and finally the guide immersed tube 63 is completely removed, and the emitter 4 is fixed at a set position in the collecting body 2 to compact the high-purity alumina powder or particles.

[0050] In order to reduce the resistance when taking out the guide sinker 63, the upper edge of the guide sinker 63 is an inclined surface or a raised triangular surface. The inner and outer surfaces of the guide sinker 63 are polished and grinded to maintain a smooth property.

[0051] In order to limit the position of the guide sunken tube 63 and further limit the position of the launcher 4, a telescopic probe rod 632 is provided at the bottom of the guide sunken tube 63, and the bottom of the telescopic probe rod 632 contacts the bottom of the collecting body 2 to limit the height of the guide sunken tube 63 in the collecting body 2; more than three transverse probe rods 633 are provided on the side of the guide sunken tube 63, one end of the transverse probe rod 633 is connected to the side of the guide sunken tube 63 by a pin shaft, and the other end contacts the inner wall of the collecting body 2 to limit the horizontal position of the guide sunken tube 63 in the collecting body 2; a torsion spring is also provided on the pin shaft, and the two ends of the torsion spring are respectively connected to the transverse probe rod 633 and the side of the guide sunken tube 63.

[0052] The angles between any adjacent transverse probe rods 633 are equal. When fully opened, the angle between the transverse probe rods 633 and the upper side of the guide immersed tube 63 is still an acute angle. To avoid a right angle or even an obtuse angle, the guide immersed tube 63 will interfere with the collecting body 2 when descending, resulting in a failure of descent.

[0053] like Figure 2 , Figure 3 and Figure 6 As shown, the crane 61 is also provided with a second hanging motor 66. In order to ensure compact filling, the manufacturing device also includes a vibration ring 65. The vibration ring 65 is sleeved on the outside of the collecting body 2 and is suspended under the second hanging motor 66 by a hanging rope 64. The second hanging motor 66 is arranged on the crane 61. The vibration ring 65 promotes the filling of high-purity alumina powder or particles through vibration; the vibration ring 65 moves upward as the high-purity alumina is filled.

[0054] like Figure 6 As shown, in order to achieve simultaneous multi-point vibration, the vibration ring 65 includes a ring body 651, a plurality of vibration bodies 652 arranged on the inner wall of the ring body 651, and an elastic member 653 connecting the vibration body 652 and the ring body 651. The inner diameter of the ring body 651 is much larger than the outer diameter of the collecting body 2. After the vibration body 652 compresses the elastic member 653, it contacts the outer wall of the collecting body 2, and the vibration body 652 vibrates by itself.

[0055] like Figure 6As shown, in order to ensure vibration while facilitating the up and down movement of the vibration ring 65, an adjustment hole 654 is further provided on the inner wall of the ring body 651, and a telescopic strip 655 is provided in the adjustment hole 654. The two ends of the telescopic strip 655 are respectively connected to the bottom of the adjustment hole 654 and one end of the elastic member 653. The inner diameter of the adjustment hole 654 is larger than the outer diameter of the elastic member 653. The position of the vibration body 652 is changed by the self-expansion of the telescopic strip 655, thereby limiting the pressure value between the vibration body 652 and the outer wall of the collecting body 2.

[0056] like Figure 2 and Figure 3 As shown, in order to further increase the vibration effect, a vibration unit is provided inside the guide sinker 63, and the vibration promotes the pulling out of the guide sinker 63 and the filling of high-purity alumina powder or particles.

[0057] like Figure 4 and Figure 5 As shown, in order to keep the collector 2 stable throughout the whole process, the base mounting seat 51 is further provided with more than three stable countersunk holes 511, and the stable countersunk holes 511 are evenly distributed on a circumference. A vertical telescopic rod 512 is provided inside the stable countersunk hole 511, and a stable column 513 is provided at the upper end of the vertical telescopic rod 512, and the stable column 513 is in clearance fit with the stable countersunk hole 511.

[0058] like Figure 3 and Figure 5 As shown, when the bottom of the collecting body 2 is placed on the mounting groove 52, the vertical telescopic rod 512 is in the shortest state, and the stabilizing column 513 is completely retracted in the stabilizing countersunk hole 511. As the vibration ring 65 is lifted, the vertical telescopic rod 512 is synchronously extended, and the long end side of the stabilizing column 513 contacts the bottom side of the collecting body 2. There is a gap directly between the top of the stabilizing column 513 and the bottom of the vibration ring 65, and the stabilizing column 513 stably supports the collecting body 2.

[0059] like Figure 4 and Figure 5 As shown, in order to guide the collecting body 2 to accurately fall onto the mounting groove 52 , the manufacturing device is further provided with a guiding device, including a trigger unit arranged at the bottom of the mounting groove 52 and an action unit arranged at the top of the stabilizing column 513 .

[0060] The trigger unit includes a trigger hole 71 arranged at the bottom of the mounting groove 52, a trigger block 72 arranged in the trigger hole 71, a trigger spring 73 arranged in the trigger hole 71, a control hole 74 arranged on the side wall of the trigger hole 71, a control rod 75 arranged in the control hole 74 and a control spring 76 arranged in the control hole 74; the control spring 76 controls the control rod 75 to have a tendency to move from the control hole 74 to the trigger block 72; a control accommodating groove 77 is provided on the side of the trigger block 72.

[0061] The action unit includes a guide groove 81 arranged at the top of the stabilizing column 513, a rocking arm 82 arranged in the guide groove 81, a guide roller 83 arranged at the top of the rocking arm, and a torsion spring arranged on the rocking arm 82; the lower part of the rocking arm 82 is arranged on the guide groove 81 through an ear shaft 84, the side wall of the guide groove 81 is provided with an ear shaft hole, the ear shaft 84 is inserted into the ear shaft hole, the torsion spring is arranged on the ear shaft 84, the two ends of the torsion spring are respectively connected to the rocking arm 82 and the ear shaft hole, and the torsion spring makes the rocking arm 82 tend to swing toward the trigger block 72; the control rod 75 passes through the control hole 74 and enters the guide groove 81 to resist the rocking arm 82.

[0062] When the collecting body 2 presses down the trigger block 72, the trigger block 72 moves downward, and when the control accommodating groove 77 faces the control rod 75, under the action of the control spring 76, the control rod 75 partially enters the control accommodating groove 77 and completely exits the guide groove 81. Under the action of the torsion spring, the rocking arm 82 swings toward the trigger block 72, and the guide roller 83 contacts the outer wall of the collecting body 2 to preliminarily stabilize the collecting body 2.

[0063] In order to enable resetting, the end of the control rod 75 close to the trigger block 72 is a downward slope. When the collecting body 2 is taken away, the trigger block 72 remains stationary because the stabilizing column 513 is not fully retracted. When the stabilizing column 513 is retracted, the trigger block 72 rises under the action of the trigger spring 73, and the control accommodating groove 77 squeezes the control rod 75, pushing the control rod 75 into the guide groove 81 and supporting the rocking bar 82 to complete the resetting.

[0064] In order to maintain good contact, the generatrix of the guide roller 83 is in an arc shape, and the radius of the arc is equal to the outer radius of the collector 2. In order to protect the outer surface of the collector 2 and avoid scratches, the guide roller 83 is made of rubber material.

[0065] like Figure 7As shown, in order to realize the movement of the movable blocking block 631, a laterally arranged blocking block adjustment hole 634 is provided at the lower part of the guide immersed tube 63, a power groove 635 is provided at the bottom of the blocking block adjustment hole 634, and a swing motor 636 is provided in the power groove 635; the movable blocking block 631 is cylindrical, arranged in the power groove 635, and a vertical adjustment groove 637 is provided on the side; a swing rod 638 is provided on the output shaft of the swing motor 636, and a swing block 639 is provided at the free end of the swing rod 638, and the swing block 639 is inserted into the adjustment groove 637.

[0066] The swing motor 636 drives the swing rod 638 to swing, and the swing rod 638 pushes the movable blocking block 631 to move back and forth in the blocking block adjustment hole 634 through the swing block 639, so that the blocking block adjustment hole 634 blocks or releases the lower end of the launcher 4.

[0067] The manufacturing process of the self-powered neutron detector manufacturing device is as follows:

[0068] Step 100, placing the collecting body 2 on the mounting groove 52 along the guidance of the guide roller 83, and tightening the guide device;

[0069] Step 101, electrically connecting the emitter 4 to the core of the wire 1;

[0070] Step 102, start the swing motor 636 to push the blocking block adjustment hole 634 into the inner hole at the bottom of the guide sinker 63;

[0071] Step 103, placing the emitter 4 together with the wire 1 into the guide immersed tube 63;

[0072] Step 104, extend the telescopic probe 632, unfold the transverse probe 633, and place the guide immersed tube 63 together with the emitter 4 and the conductor 1 into a set position in the collector 2;

[0073] Step 105, adjusting the position of the vibrating body 652 according to the outer diameter of the collecting body 2;

[0074] Step 106, lowering the vibration ring 65 to the lower end of the collecting body 2;

[0075] Step 200, start the vibrating body 652, and put high-purity aluminum oxide powder or particles into the collecting body 2;

[0076] Step 201, as the upper surface of the high-purity aluminum oxide powder or particles is lifted, the vibration ring 65 is lifted, and the vibration ring 65 is kept at a position 1-3 cm below the upper surface of the high-purity aluminum oxide powder or particles;

[0077] Step 202, as the vibration ring 65 is lifted, the vertical telescopic rod 512 is extended synchronously, and the gap between the top of the stabilizing column 513 and the bottom of the vibration ring 65 is kept stable in size;

[0078] Step 203, when the upper surface of the high-purity aluminum oxide powder or particles is lifted to the lower end surface of the guide sinker 63, the telescopic probe 632 is retracted into the stop block adjustment hole 634, the projectile 4 and the wire 1 fall down, and the lower surface of the projectile 4 contacts the high-purity aluminum oxide powder or particles;

[0079] Step 204, continue filling with high-purity alumina powder or particles. As the upper surface of the high-purity alumina powder or particles rises, lift the guide sinker 63 and the vibration ring 65, and keep the transverse probe 633 at a certain distance from the upper surface until the guide sinker 63 is completely separated from the collecting body 2, and the filling of high-purity alumina powder or particles is completed; when the guide sinker 63 is lifted, the vibration unit inside the guide sinker 63 is started;

[0080] Step 205, taking away the filled collector 2, shrinking the stabilizing column 513 into the stabilizing countersunk hole 511, and waiting for the placement and filling of the collector 2 of the next self-powered neutron detector.

[0081] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0082] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 self-powered neutron detector, characterized in that: include The collecting body (2) is in the shape of a test tube with one end closed and the other end open and hollow inside; An emitter (4) is arranged inside the collecting body (2) and is completely separated from the collecting body (2); An insulator (3) is arranged inside the collector (2), fills the gap between the emitter (4) and the inner wall of the collector (2), and has electrical insulation properties; The wire (1) has one end arranged on the open end of the collector (2), and has two wire cores inside, one of which passes through the insulator (3) to be electrically connected to the emitter (4), and the other serves as a background signal core wire, and the two wire cores are intertwined to form a twisted wire structure.

2. The self-powered neutron detector according to claim 1, characterized in that: The insulator (3) is high-purity aluminum oxide.

3. A manufacturing device for a self-powered neutron detector, used for manufacturing the self-powered neutron detector according to claim 2, characterized in that: include A basic mounting seat (51) is provided with a mounting groove (52) at the bottom, and the bottom of the collector (2) is placed on the mounting groove (52) to wait for the emitter (4) and the insulator (3) to be installed; A crane (61) is arranged above the base mounting seat (51); A first hanging motor (62) is arranged on the crane (61); The guide immersed tube (63) is suspended below the first suspension motor (62) via a suspension rope (64), and the first suspension motor (62) drives the guide immersed tube (63) to move up and down; The guide immersed tube (63) is a tubular structure, a movable blocking block (631) is provided at the lower end thereof, and the launcher (4) is placed inside the guide immersed tube (63); The guide sinker (63) carries the emitter (4) into the collecting body (2), and high-purity alumina powder or granules are filled into the collecting body (2). After the filling reaches the height of the bottom of the guide sinker (63), the movable blocking block (631) is opened, so that the bottom of the emitter (4) drops onto the high-purity alumina, and the high-purity alumina is continued to be filled. The guide sinker (63) is pulled upward while filling, and finally the guide sinker (63) is completely removed, and the emitter (4) is fixed at a set position in the collecting body (2) to compact the high-purity alumina powder or granules.

4. The manufacturing device of the self-powered neutron detector according to claim 3, characterized in that: A telescopic probe (632) is provided at the bottom of the guide immersed tube (63), and the bottom of the telescopic probe (632) contacts the bottom of the collecting body (2), thereby limiting the height of the guide immersed tube (63) in the collecting body (2); The side of the guide sunken tube (63) is provided with more than three transverse probe rods (633), one end of the transverse probe rod (633) is connected to the side of the guide sunken tube (63) through a pin shaft, and the other end is in contact with the inner wall of the collecting body (2), so as to limit the horizontal position of the guide sunken tube (63) in the collecting body (2); a torsion spring is also provided on the pin shaft, and the two ends of the torsion spring are respectively connected to the transverse probe rod (633) and the side of the guide sunken tube (63).

5. The manufacturing device of the self-powered neutron detector according to claim 3, characterized in that: The crane (61) is also provided with a second suspension motor (66), and the manufacturing device also includes a vibration ring (65). The vibration ring (65) is sleeved on the outside of the collecting body (2) and is suspended below the second suspension motor (66) by a suspension rope (64). The vibration ring (65) promotes the filling of high-purity alumina powder or particles through vibration; the vibration ring (65) moves upward as the high-purity alumina is filled.

6. The manufacturing device of the self-powered neutron detector according to claim 5, characterized in that: The vibration ring (65) comprises a ring body (651), a plurality of vibration bodies (652) arranged on the inner wall of the ring body (651), and an elastic member (653) connecting the vibration body (652) and the ring body (651). The inner diameter of the ring body (651) is much larger than the outer diameter of the collecting body (2). After the vibration body (652) compresses the elastic member (653), it contacts the outer wall of the collecting body (2), and the vibration body (652) vibrates by itself.

7. The manufacturing device of the self-powered neutron detector according to claim 5, characterized in that: The basic mounting seat (51) is also provided with more than three stabilizing countersunk holes (511), and the stabilizing countersunk holes (511) are evenly distributed on a circumference; A vertical telescopic rod (512) is provided inside the stabilizing countersunk hole (511), a stabilizing column (513) is provided at the upper end of the vertical telescopic rod (512), and the stabilizing column (513) is clearance-matched with the stabilizing countersunk hole (511); When the bottom of the collecting body (2) is placed on the mounting groove (52), the vertical telescopic rod (512) is in the shortest state, and the stabilizing column (513) is completely retracted in the stabilizing countersunk hole (511). As the vibration ring (65) is lifted, the vertical telescopic rod (512) is synchronously extended, and the long end side of the stabilizing column (513) contacts the bottom side of the collecting body (2). There is a gap between the top of the stabilizing column (513) and the bottom of the vibration ring (65), and the stabilizing column (513) stably supports the collecting body (2).

8. The manufacturing device of the self-powered neutron detector according to claim 7, characterized in that: The manufacturing device is also provided with a guiding device, comprising a trigger unit arranged at the bottom of the mounting groove (52) and an action unit arranged at the top of the stabilizing column (513); The trigger unit comprises a trigger hole (71) arranged at the bottom of the mounting groove (52), a trigger block (72) arranged in the trigger hole (71), a trigger spring (73) arranged in the trigger hole (71), a control hole (74) arranged on a side wall of the trigger hole (71), a control rod (75) arranged in the control hole (74) and a control spring (76) arranged in the control hole (74); the control spring (76) controls the control rod (75) to have a tendency to move from the control hole (74) to the trigger block (72); a control accommodating groove (77) is arranged on the side of the trigger block (72); The action unit comprises a guide groove (81) arranged at the top of the stabilizing column (513), a rocking arm (82) arranged in the guide groove (81), a guide roller (83) arranged at the top of the rocking arm, and a torsion spring arranged on the rocking arm (82); the lower part of the rocking arm (82) is arranged on the guide groove (81) through an ear shaft (84), the side wall of the guide groove (81) is provided with an ear shaft hole, the ear shaft (84) is inserted into the ear shaft hole, the torsion spring is arranged on the ear shaft (84), the two ends of the torsion spring are respectively connected to the rocking arm (82) and the ear shaft hole, and the torsion spring makes the rocking arm (82) tend to swing toward the trigger block (72); the control rod (75) passes through the control hole (74) and enters the guide groove (81) to resist the rocking arm (82); When the collecting body (2) presses down the trigger block (72), the trigger block (72) moves downward, and when the control receiving groove (77) faces the control rod (75), under the action of the control spring (76), the control rod (75) partially enters the control receiving groove (77) and completely exits the guide groove (81). Under the action of the torsion spring, the rocking arm (82) swings toward the trigger block (72), and the guide roller (83) contacts the outer wall of the collecting body (2), thereby preliminarily stabilizing the collecting body (2).

9. The manufacturing device of the self-powered neutron detector according to claim 3, characterized in that: A transversely arranged blocking block adjustment hole (634) is provided at the lower part of the guide sinker (63), a power groove (635) is provided at the bottom of the blocking block adjustment hole (634), and a swing motor (636) is provided in the power groove (635); The movable blocking block (631) is cylindrical, arranged in the power slot (635), and has a vertical adjustment slot (637) on its side; A swing rod (638) is provided on the output shaft of the swing motor (636), a swing block (639) is provided at the free end of the swing rod (638), and the swing block (639) is inserted into the adjustment slot (637).

10. The manufacturing process of the self-powered neutron detector manufacturing device according to any one of claims 3 to 9, characterized in that: Step 100, placing the collecting body (2) on the mounting groove (52) along the guidance of the guide roller (83), and tightening the guide device; Step 101, electrically connecting the emitter (4) to the core of the wire (1); Step 102, start the swing motor (636) to push the blocking block adjustment hole (634) into the inner hole at the bottom of the guide sinker (63); Step 103, placing the emitter (4) together with the conductor (1) into the guide immersed tube (63); Step 104, extending the telescopic probe (632), unfolding the transverse probe (633), and placing the guide immersed tube (63) together with the launcher (4) and the conductor (1) into a set position in the collecting body (2); Step 105, adjusting the position of the vibrating body (652) according to the outer diameter of the collecting body (2); Step 106, lowering the vibration ring (65) to the lower end of the collecting body (2); Step 200, start the vibrating body (652) and put high-purity aluminum oxide powder or particles into the collecting body (2); Step 201, as the upper surface of the high-purity aluminum oxide powder or particles is lifted, the vibration ring (65) is lifted, and the vibration ring (65) is kept at a position 1-3 cm below the upper surface of the high-purity aluminum oxide powder or particles; Step 202, as the vibration ring (65) is lifted, the vertical telescopic rod (512) is synchronously extended, and the gap between the top of the stabilizing column (513) and the bottom of the vibration ring (65) remains stable in size; Step 203, when the upper surface of the high-purity aluminum oxide powder or particles is lifted to the lower end surface of the guide sinker (63), the telescopic probe (632) is retracted into the blocking block adjustment hole (634), the projectile (4) and the wire (1) fall down, and the lower surface of the projectile (4) contacts the high-purity aluminum oxide powder or particles; Step 204, continue filling with high-purity alumina powder or particles, as the upper surface of the high-purity alumina powder or particles rises, lift the guide sinker tube (63) and the vibration ring (65), keep the transverse probe rod (633) at a certain distance from the upper surface, until the guide sinker tube (63) is completely separated from the collecting body (2), and the filling of the high-purity alumina powder or particles is completed; Step 205, taking away the filled collection body (2), retracting the stabilizing column (513) into the stabilizing sink hole (511), and waiting for the placement and filling of the collection body (2) of the next self-powered neutron detector.

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