CN213957197U

CN213957197U - Portable building wall connection neutron scattering imaging system for quality detection

Info

Publication number: CN213957197U
Application number: CN202022750815.5U
Authority: CN
Inventors: 廖旭涛; 吴东彪; 孟玉; 曹光暄; 徐文华; 万富; 李天宝
Original assignee: Anhui Urban Construction Design Research Institute Co ltd
Current assignee: Anhui Urban Construction Design Research Institute Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-13
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a neutron scattering imaging system for portable building wall connection quality testing, relate to nondestructive test technical field, which comprises a bracket, the support specifically comprises two Y-axis bidirectional drive assemblies and two crossbars, still include an X-axis bidirectional drive assembly, still install Z-axis bidirectional drive assembly on the drive platform of X-axis bidirectional drive assembly, the drive platform of Z-axis bidirectional drive assembly is fixed with neutron detector, the tip of each Y-axis bidirectional drive assembly is all fixed with props the wall support, a lateral wall at the top of each Y-axis bidirectional drive assembly is all rotationally connected with a vaulting pole, be provided with the main control unit that is connected with neutron detector between two vaulting poles, each Y-axis bidirectional drive assembly bottom lateral wall is rotationally connected with the bracing respectively, the main control unit is still signal connected with the remote control end; the utility model discloses can effectively detect building type connection quality, the credibility is high, can realize remote operation, and need not external circuit, and the suitability is strong.

Description

Portable building wall connection neutron scattering imaging system for quality detection

Technical Field

The utility model relates to a nondestructive test field specifically is a neutron transmission imaging system for detecting assembled building wall.

Background

The grouting saturation of the fabricated concrete wall structure and the connection quality between walls thereof, such as sleeve connection and grout anchor connection, directly affects the safety of the structure. At present, the quality of the connection node of the prefabricated concrete structure lacks of an effective detection means. In recent years, more and more attention is paid to methods for detecting grouting fullness of connecting joints of sleeves of prefabricated concrete structures, and various methods and patents are shown in the eight figures and appear in the eight hundreds of thousands of stories, but a reliable and effective detection method cannot be achieved. The problems of lacking of ribs, cavities, unqualified concrete marks and the like exist in the wall structure.

The mainstream detection methods available in the literature currently include: ultrasonic flaw detection, electromagnetic wave (radar), impact echo, and X-ray. When the ultrasonic flaw detection method is used for detecting the internal structure of the concrete, the detection result is greatly influenced by the coupling of the transducer, and the diffraction and scattering of ultrasonic waves in the internal structure of the concrete cause the result to have high multiplicity. When the electromagnetic wave method (radar method) is used for detecting the grouting saturation of the concrete inner sleeve, the inner condition cannot be detected due to the shielding of the metal material of the sleeve. The mechanism of the impulse echo method is to use pulse mechanical wave to impact a detection point and measure the echo. Similar to the ultrasonic method, the echo of the impact echo method has great ambiguity, and the conclusion of the grouting quality of the sleeve cannot be reliably obtained. The X-ray method is a new method applied to the detection of construction engineering in recent years, and is characterized in that imaging is performed by transmitting a subject. However, the X-ray method has the problem of limited depth of penetration into the metal object, and has a general effect of imaging the detail difference inside the metal tube, and specific element components cannot be respectively extracted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a neutron scattering imaging system for portable building wall connection quality testing to there is not the technical problem who utilizes the equipment of neutron transmission technology detection wall body quality among the solution prior art.

The utility model discloses a realize through following technical scheme:

the utility model provides a neutron scattering imaging system for portable building wall connection quality testing, which comprises a bracket, the support specifically comprises two Y axle bidirectional drive assemblies and two whippletrees that are parallel to each other and vertical setting, two respectively through one between the top of Y axle bidirectional drive assembly and the bottom the whippletree is connected, still includes an X axle bidirectional drive assembly, fixed mounting is on the drive platform of a Y axle bidirectional drive assembly respectively at the both ends of X axle bidirectional drive assembly, still install Z axle bidirectional drive assembly on the drive platform of X axle bidirectional drive assembly, fixed mounting has neutron detector on the drive platform of Z axle bidirectional drive assembly, every equal fixed mounting has the wall support, every in the Y axle bidirectional drive assembly both ends end with on the lateral wall of neutron detector homonymy in the Y axle bidirectional drive assembly top all rotate on the lateral wall that deviates from neutron detector and be connected with one and prop a support The pole, two be provided with the main control system who is connected with neutron detector between the vaulting pole, main control system and two vaulting poles are respectively through connecting piece fixed connection, every rotate respectively on the lateral wall that Y axle bidirectional drive assembly bottom deviates from neutron detector and be connected with the bracing, every the other end of bracing rotates with the vaulting pole middle part of homonymy respectively and is connected, main control system still signal connection has the remote control end.

Furthermore, the neutron detector comprises a detector mainboard, and a neutron source module and a thermal neutron detection module which are respectively connected with the detector mainboard, wherein the detector mainboard is connected with the control host through a 485 bus.

Further, the control host comprises a first lithium battery power supply, a motor driving module, a first wireless transceiver module and an embedded core mainboard, wherein the first lithium battery power supply, the motor driving module and the first wireless transceiver module are respectively connected with the embedded core mainboard, and the detector mainboard is connected with the embedded core mainboard through a 485 bus.

Furthermore, the remote control end comprises a control mainboard, a display, a second wireless transceiver module and a second lithium battery power supply, wherein the display, the second wireless transceiver module and the second lithium battery power supply are respectively connected with the control mainboard.

Furthermore, a pointed grabbing foot is fixedly installed at the bottom end of each support rod.

Furthermore, the middle part of each scattering brace rod is provided with a waist-shaped groove used for adjusting the connecting position of the corresponding inclined strut, and each inclined strut is rotatably installed in the corresponding waist-shaped groove through an adjusting piece and is adjusted in the position of the waist-shaped groove through the adjusting piece.

Furthermore, each supporting wall support is composed of a connecting bolt and a supporting seat, one end of the connecting bolt is in threaded connection with the corresponding Y-axis bidirectional driving assembly, and the other end of the connecting bolt is in threaded connection with the corresponding supporting seat.

Further, the stay bar is of a telescopic structure.

Compared with the prior art, the utility model has the following advantages:

1) compared with the equipment using the ultrasonic method and the impulse echo method, the utility model adopts the neutron transmission technology, thereby avoiding the defects of the traditional X-ray technology;

2) the utility model does not need other pre-buried sensors and auxiliary processes, does not interfere with the construction process, and has good applicability;

3) this practical equipment simple structure can realize the multizone and detect, and it is convenient to remove simultaneously, the remote control of being convenient for.

Drawings

FIG. 1 is a schematic view of the structure of an apparatus in embodiment 1;

fig. 2 is a schematic diagram of connection of circuit elements in the system according to embodiment 1;

fig. 3 is a schematic structural diagram of a detected building wall.

In the figure: 1. a Y-axis bidirectional drive assembly; 2. horizontal bars; 3. an X-axis bidirectional drive assembly; 4. a Z-axis bidirectional drive assembly; 5. a neutron detector; 6. a wall bracing support; 7. a stay bar; 8. a control host; 9. bracing; 10. a remote control end; 11. a detector main board; 12. a neutron source module; 13. a thermal neutron detection module; 14. a first lithium battery power supply; 15. a motor drive module; 16. a first wireless transceiving module; 17. an embedded core motherboard; 18. a control main board; 19. a display; 20. a second wireless transceiver module; 21. a second lithium battery power supply; 22. a sharp-end claw; 23. a waist-shaped groove; 24. an adjustment member; 25. a connecting bolt; 26. and (4) supporting the base.

Detailed Description

The technical solution of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 3, the grouting saturation in the inner sleeve of the detected wall body can not be accurately detected by using electromagnetic waves in the prior art, in this embodiment, fast neutrons emitted by a neutron source collide with nuclei of sensitive elements such as hydrogen and boron in materials, the energy of the fast neutrons is gradually lost, the fast neutrons are finally moderated into thermal neutrons, the thermal neutrons are scattered all around, and a detector of the system receives the scattered thermal neutrons to feed back the internal situation of the structure.

Examples

With reference to fig. 1, this embodiment provides a neutron scattering imaging system for connection quality detection of portable building wall, including a support, for the convenience of equipment transportation and attached on the wall that is surveyed, for the convenience of equipment's removal simultaneously, in this embodiment, the support specifically comprises two Y axle bidirectional drive assemblies 1 that are parallel to each other and vertical setting (also can set up two Y axle bidirectional drive assemblies 1 to one, another is the slide bar alright, can set up as required) and two whippletrees 2, connect through a whippletree 2 respectively between the top of two Y axle bidirectional drive assemblies 1 and the bottom (namely two Y axle bidirectional drive assemblies 1 and two whippletrees 2 constitute a rectangle stable structure), still include an X axle bidirectional drive assembly 3, the both ends of X axle bidirectional drive assembly 3 are fixed mounting respectively on the drive platform of a Y axle bidirectional drive assembly 1 (thereby two or a Y axle bidirectional drive assembly 1 can effectively drive The X-axis bidirectional assembly 3 moves up and down in the whole, specifically 1Y-axis bidirectional drive assembly 1 in the embodiment, and the other is replaced by a slide bar), a Z-axis bidirectional drive assembly 4 is further installed on a drive platform of the X-axis bidirectional drive assembly 3, and a neutron detector 5 is fixedly installed on the drive platform of the Z-axis bidirectional drive assembly 4, namely, the neutron detector 5 can effectively realize limited motion in a three-dimensional space through the arrangement; in order to keep the formed rectangular stable structure parallel to the measured wall and thus to keep the neutron detector 5 stable, in this embodiment, the side walls of the two end parts of each Y-axis bidirectional driving assembly 1 on the same side as the neutron detector 5 are fixedly provided with the support wall supports 6, by which the rectangular structure can be effectively kept parallel to the measured wall, so that the neutron detector 5 can be always kept parallel to the measured wall when the vertical surface reciprocates, and simultaneously, in order to be stable when the rectangular structure is vertically arranged, in this embodiment, the side wall of the top end of each Y-axis bidirectional driving assembly 1 away from the neutron detector 5 is rotatably connected with one support rod 7, the side wall of the bottom end of each Y-axis bidirectional driving assembly 1 away from the neutron detector 5 is respectively rotatably connected with the inclined strut 9, and the other end of each inclined strut 9 is respectively rotatably connected with the middle part of the support rod 7 on the same side, therefore, after the rectangular structure is adjusted, the whole rectangular structure can be effectively supported through the support rods 7 and the inclined supports 9, and the purpose of stabilizing equipment is achieved; meanwhile, in order to facilitate later-stage carrying and transferring of equipment, a control host 8 connected with the neutron detector 5 is arranged between the two support rods 7, the control host 8 and the two support rods 7 are fixedly connected through connecting pieces respectively, and the control host 8 is further connected with a remote control end 10 in a signal mode; through the arrangement, the neutron detector 5 can be effectively controlled through the remote control end 10 through the control host 8, and meanwhile, the acquired data can be effectively acquired.

The working principle is as follows:

before the equipment works, firstly, a rectangular structure formed by a Y-axis bidirectional driving assembly 1 and a cross bar 2 is vertically placed, then, after a wall supporting support 6 is attached to a tested wall body, a support rod 7 is opened to move to a position capable of stably supporting the rectangular structure and then be fixed, a support rod 7 can be effectively supported by an inclined support 9, after the equipment is installed, a remote control end 10 controls the actions of a neutron detector 5, the Y-axis bidirectional driving assembly 1, an X-axis bidirectional driving assembly 3 and a Z-axis bidirectional driving assembly 4 through a control host 8, and meanwhile, feedback information is received; all the driving assemblies are set as synchronous belt linear module sliding tables in the embodiment;

after the equipment is installed, firstly, the control host 8 controls the Z-axis bidirectional driving assembly 4 to drive the neutron detector 5 to move to a set distance from a measured wall body, then the control host 8 controls the Y-axis bidirectional driving assembly 1 and the X-axis bidirectional driving assembly 3 to drive the neutron detector 5 to move on a two-position vertical surface according to the setting, neutron emission and thermal neutron receiving are carried out by the neutron detector 5 to obtain corresponding neutron distribution density and feed back to the remote control end 10, through continuous scanning, the remote control end 10 can carry out corresponding judgment according to the comparison of the received information and standard data (namely, data obtained by detecting grouting saturated materials), and can also make the detected data into neutron distribution images, when the neutron image distribution density detected at a certain position is obviously lower than the neutron density under the same condition, the unsaturated problem in the region can be judged, and the unsaturation degree is given, so that the effective detection of the building connection quality is realized.

The utility model discloses a principle for detecting is that the neutron is not electrified nature, can pierce through the electron layer easily, so the neutron when shining the inside precast concrete panel that contains reinforcing bar and reinforcing bar sleeve (as shown in fig. 3), can pierce through reinforcing bar sleeve easily, collide with the hydrogen atom that the slip casting material contains in the sleeve and form the scattering, finally slow down to the thermal neutron, the thermal neutron is to scattering all around, through receiving the thermal neutron of scattering, can acquire its distribution density; under automatic and continuous emission and reception, a neutron scattering image of the detection area can be formed, and the quality of the interior of the structure can be obtained according to comparison with a standard component.

Particularly, in this embodiment, the neutron detector 5 includes a detector motherboard 11, and a neutron source module 12 and a thermal neutron detection module 13 respectively connected to the detector motherboard 11, where the detector motherboard 11 is connected to the control host 8 through a 485 bus;

specifically, in this embodiment, the control host 8 includes a first lithium battery power supply 14, a motor driving module 15, a first wireless transceiver module 16, and an embedded core motherboard 17, the first lithium battery power supply 14, the motor driving module 15, and the first wireless transceiver module 16 are respectively connected to the embedded core motherboard 17, and the detector motherboard 11 is connected to the embedded core motherboard 17 through a 485 bus.

Specifically, in the present embodiment, the remote control terminal 10 includes a control main board 18, a display 19, a second wireless transceiver module 20, and a second lithium battery power supply 21, and the display 19, the second wireless transceiver module 20, and the second lithium battery power supply 21 are respectively connected to the control main board 18.

In particular, in order to be able to stably fix the struts 7, a pointed catch foot 22 is fixedly mounted at the bottom end of each strut 7 in the present embodiment.

In particular, in order to avoid that the struts 7 cannot accurately support the rectangular structure when being unfolded at a fixed angle, in this embodiment, a waist-shaped groove 23 for adjusting the connection position of the corresponding strut 9 and the corresponding strut 7 is formed in the middle of each strut 7, each strut 9 is rotatably installed in the corresponding waist-shaped groove 23 through an adjusting piece 24, and the position of each strut in the corresponding waist-shaped groove 23 is adjusted through the adjusting piece 24, the adjusting piece 24 can be a combination of a bolt and a butterfly nut, and the support point of the strut 9 can be adjusted through the waist-shaped groove 23 and the adjusting piece 24, so that the unfolding angle of the strut 7 can be conveniently adjusted, and the defects are avoided.

In particular, in order to avoid the detection process error caused by uneven wall, in this embodiment, each supporting wall support 6 is composed of a connecting bolt 25 and a supporting seat 26, one end of the connecting bolt 25 is in threaded connection with the corresponding Y-axis bidirectional driving assembly 1, the other end of the connecting bolt is in threaded connection with the corresponding supporting seat 26, the distance between the corresponding supporting seat 26 and the rectangular structure can be effectively adjusted by adjusting the connecting bolt 25, so that the supporting wall can be adapted to, and the rectangular frame can be always kept vertical or kept on one surface when the neutron detector 5 moves in two dimensions.

In particular, in order to further improve the adjustability of the stay 7, in the present embodiment the stay 7 is embodied as a telescopic structure.

Particularly, all the motherboards in this embodiment are STM32F103 embedded ARM main control units, and all the wireless transceiver modules are 433MHz wireless transceiver units.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a neutron scattering imaging system for quality testing is connected to portable building wall, includes the support, its characterized in that, the support specifically comprises two Y axle bidirectional drive assembly (1) and two whippletree (2) that are parallel to each other and vertical setting respectively through one between the top of Y axle bidirectional drive assembly (1) and the bottom whippletree (2) are connected, still include an X axle bidirectional drive assembly (3), fixed mounting is on the drive platform of a Y axle bidirectional drive assembly (1) respectively at the both ends of X axle bidirectional drive assembly (3), still install Z axle bidirectional drive assembly (4) on the drive platform of X axle bidirectional drive assembly (3), fixed mounting has neutron detector (5) on the drive platform of Z axle bidirectional drive assembly (4), every equal fixed mounting has the wall that props on the lateral wall of neutron detector (5) homonymy in Y axle bidirectional drive assembly (1) both ends tip and the lateral wall Support (6), every all rotate on the lateral wall that deviates from neutron detector (5) in Y axle bidirectional drive assembly (1) top and be connected with a vaulting pole (7), two be provided with host computer (8) of being connected with neutron detector (5) between vaulting pole (7), host computer (8) and two vaulting poles (7) are respectively through connecting piece fixed connection, every Y axle bidirectional drive assembly (1) bottom rotates respectively on deviating from the lateral wall of neutron detector (5) and is connected with bracing (9), every the other end of bracing (9) rotates with vaulting pole (7) middle part of homonymy respectively and is connected, host computer (8) signal connection still has remote control end (10).

2. The neutron scattering imaging system for the convenient building wall connection quality detection according to claim 1, wherein the neutron detector (5) comprises a detector main board (11), and a neutron source module (12) and a thermal neutron detection module (13) which are respectively connected with the detector main board (11), and the detector main board (11) is connected with the control host (8) through a 485 bus.

3. The neutron scattering imaging system for the connection quality detection of the portable building wall according to claim 2, wherein the control host (8) comprises a first lithium battery power supply (14), a motor driving module (15), a first wireless transceiver module (16) and an embedded core motherboard (17), the first lithium battery power supply (14), the motor driving module (15) and the first wireless transceiver module (16) are respectively connected with the embedded core motherboard (17), and the detector motherboard (11) is connected with the embedded core motherboard (17) through a 485 bus.

4. The neutron scattering imaging system for the connection quality detection of the portable building wall according to claim 3, wherein the remote control terminal (10) comprises a control main board (18), a display (19), a second wireless transceiver module (20) and a second lithium battery power supply (21), and the display (19), the second wireless transceiver module (20) and the second lithium battery power supply (21) are respectively connected with the control main board (18).

5. The neutron scattering imaging system for the connection quality detection of the portable building walls as claimed in claim 4, wherein a pointed grabbing foot is fixedly installed at the bottom end of each supporting rod (7).

6. The neutron scattering imaging system for the connection quality detection of the portable building wall according to claim 5, wherein a waist-shaped groove (23) for adjusting the connection position of the corresponding inclined strut (9) is formed in the middle of each scattering strut (7), each inclined strut (9) is rotatably installed in the corresponding waist-shaped groove (23) through an adjusting piece (24), and the position of each inclined strut in the waist-shaped groove (23) is adjusted through the adjusting piece (24).

7. The neutron scattering imaging system for the connection quality detection of the portable building walls as claimed in claim 6, wherein each of the supporting wall supports (6) is composed of a connecting bolt (25) and a supporting seat (26), one end of the connecting bolt (25) is in threaded connection with the corresponding Y-axis bidirectional driving assembly (1), and the other end of the connecting bolt is in threaded connection with the corresponding supporting seat (26).

8. The neutron scattering imaging system for the connection quality detection of the portable building walls according to claim 7, characterized in that the brace rod (7) is a telescopic structure.