Azimuthal gamma test system

Abstract

The embodiment of the application provides a azimuth gamma test system, which comprises a rotating test device, a servo motor, a sector signal analyzer and a host computer. The servo motor is used to drive the rotating test device to rotate in a preset rotating mode. The sector signal analyzer is used to obtain a reference sector signal and a reference counting time according to an encoder disc, and obtain gamma counts detected in each sector in the rotating process of the tested device. The host computer is used to obtain the reference sector signal, the reference counting time and the gamma counts from the sector signal analyzer, and obtain sector signals generated in the rotating process of the tested device for representing all sectors and a duration of continuous rotation in each sector from the tested device and display. Finally, the reference sector signal and the sector signal, the reference counting time and the duration are compared respectively, and if they are consistent, it is determined that the tested device passes the verification.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of drilling engineering in oil, coal mine and geological exploration, and particularly relate to a directional gamma testing system. BACKGROUND

[0002] The while-drilling directional gamma measuring device is an important measuring instrument in directional well and horizontal well drilling. In the drilling process, the directional gamma logging device can identify the formation gamma value in a certain direction of the while-drilling instrument, quickly and accurately determine whether the while-drilling instrument is drilling out the target layer, master the formation information, identify thin oil layers, improve drilling efficiency, and enable engineering and technical personnel to timely understand the changes of the well trajectory and formation information, and better evaluate the formation. The accuracy of the while-drilling directional gamma measuring device will affect the efficiency of the while-drilling logging technology. At present, the directional gamma can only be calibrated for standard wells and mutually calibrated between instruments, and cannot realize simulation test calibration. SUMMARY

[0003] In order to realize the simulation test calibration of the directional gamma, embodiments of the present application provide a directional gamma testing system.

[0004] The directional gamma testing system provided by the embodiments of the present application comprises:

[0005] The rotating testing device, the servo motor, the sector signal analyzer and the upper computer are connected with each other, the servo motor is connected with the rotating testing device, and the rotating testing device is used for fixedly installing the measured device.

[0006] The servo motor is used for driving the rotating testing device to rotate in a preset rotating mode according to the control instruction of the upper computer.

[0007] The sector signal analyzer is used for obtaining the reference sector signal and the reference counting time according to the coded disc, and is also used for obtaining the gamma count detected in each sector in the rotating process of the measured device.

[0008] The upper computer is also used for obtaining the reference sector signal, the reference counting time and the gamma count from the sector signal analyzer, and obtaining the sector signal for characterizing all the sectors rotated by the measured device and the duration of each sector rotated by the measured device in the rotating process from the measured device, displaying the reference sector signal, the reference counting time, the gamma count, the sector signal and the duration, respectively comparing the reference sector signal with the sector signal and the reference counting time with the duration, and determining that the measured device passes the verification if the consistency requirements are met.

[0009] In a possible implementation, the sector signal analyzer is specifically used for:

[0010] According to the preset sector number, the angle range of each sector is determined;

[0011] In each rotation period, the reference sector signal is generated according to the angle information of the encoder disc, and the reference counting time is generated according to the angle information of the encoder disc and the angle range of each sector.

[0012] In a possible implementation, the rotation test device comprises a test platform and a slip ring assembly;

[0013] The test platform is connected with the servo motor and is used for fixedly installing the measured device;

[0014] The slip ring assembly is connected with the sector signal analyzer and the test platform respectively, and the slip ring assembly is further used for electrically connecting with the measured device.

[0015] In a possible implementation, the test platform comprises a first rotor side plate, a second rotor side plate, a wiring ring, a plurality of connecting rods and a plurality of clamps;

[0016] The first rotor side plate and the second rotor side plate are oppositely arranged, each connecting rod is fixedly connected with the first rotor side plate and the second rotor side plate respectively, and the clamp is detachably arranged between adjacent two connecting rods and connected with the first rotor side plate and the second rotor side plate respectively;

[0017] The wiring ring is arranged between the first rotor side plate and the second rotor side plate;

[0018] The first rotor side plate is connected with the servo motor, and the second rotor side plate is connected with the slip ring assembly.

[0019] In a possible implementation, the connecting rod is provided with a first power strip, the wiring ring is provided with a second power strip, and the first power strip and the second power strip are electrically connected.

[0020] In a possible implementation, the first rotor side plate has a first rotating shaft, and the second rotor side plate has a second rotating shaft;

[0021] The slip ring assembly comprises a slip ring, a slip ring adapter and a bearing slip ring seat;

[0022] The slip ring is connected with the slip ring adapter, and the slip ring is arranged in the bearing slip ring seat;

[0023] The first rotating shaft is connected with the servo motor;

[0024] The slip ring adapter is connected with the second rotating shaft and electrically connected with the second power strip.

[0025] In a possible implementation, the second rotating shaft is a hollow structure.

[0026] In a possible implementation, L-shaped grooves are formed on the first rotor side plate and / or the second rotor side plate, and the L-shaped grooves are distributed between adjacent two connecting rods.

[0027] The clamp is arranged in the L-shaped groove.

[0028] In a possible implementation, the rotating test device further comprises a bearing support, a first motor support and a second motor support.

[0029] The slip ring assembly is arranged on the bearing support, and the servo motor is arranged on the first motor support and the second motor support.

[0030] In a possible implementation, at least one counterweight is detachably arranged on the clamp.

[0031] In the azimuth gamma test system provided by the embodiment of the application, the device under test is installed on the rotating test device, the host computer controls the servo motor to drive the rotating test device to rotate in a preset rotating mode, in the rotating process, the sector signal analyzer obtains the reference sector signal and the reference counting time according to the encoder disc, and simultaneously obtains the gamma count detected in each sector in the rotating process of the device under test, the host computer obtains the reference sector signal, the reference counting time and the gamma count from the sector signal analyzer, and obtains the sector signal and the duration of each sector rotated by the device under test in the rotating process, the reference sector signal, the reference counting time, the gamma count, the sector signal and the duration are displayed on the host computer, and the reference sector signal and the sector signal, the reference counting time and the duration are compared respectively, if the reference sector signal and the sector signal, the reference counting time and the duration meet the preset requirements, the performance verification of the device under test is passed, and the simulation test calibration of the azimuth gamma is realized.

[0032] It should be understood that the content described in the summary section is not intended to limit the key or important features of the embodiments of the application, nor to limit the scope of the application. Other features of the application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and other features, aspects and advantages of the present application will become more apparent with reference to the following detailed description when taken in conjunction with the accompanying drawings in which:

[0034] Figure 1 A block diagram of an azimuth gamma test system according to an embodiment of the present application is shown.

[0035] Figure 2 A detailed block diagram of an azimuth gamma test system according to an embodiment of the present application is shown.

[0036] Figure 3 A structural diagram of a rotating test device according to an embodiment of the present application is shown.

[0037] Figure 4 A structural diagram of a first rotor side plate according to an embodiment of the present application is shown.

[0038] Figure 5 A structural diagram of a second rotor side plate according to an embodiment of the present application is shown.

[0039] Figure 6 A structural diagram of a wiring ring according to an embodiment of the present application is shown.

[0040] Figure 7 An azimuth sector signal diagram output by an azimuth sector measurement module is shown.

[0041] Wherein:

[0042] 100, host computer; 200, rotating test device; 210, rotating test platform; 211, first rotor side plate; 2111, first rotor shaft; 212, second rotor side plate; 2121, second rotor shaft; 213, wiring ring; 2131, second power strip; 214, connecting rod; 2141, first power strip; 215, clamp; 220, slip ring assembly; 221, slip ring; 222, slip ring adapter; 223, bearing slip ring seat; 300, sector signal analyzer; 400, servo motor. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application.

[0044] With the increasing degree of oilfield exploration and development, oil and gas development turns to some more difficult reservoirs. In the drilling process, directional wells and horizontal wells replace the traditional straight wells. During the drilling process, the formation parameters around the drill bit need to be understood in real time, and the well trajectory is adjusted to make the drill bit drill in the favorable oil and gas layer as much as possible, so as to improve the oil and gas recovery and the oil and gas production. At present, the azimuth gamma can only calibrate the standard well and calibrate the instruments, and cannot realize analog test calibration. To solve the above problems, an embodiment of the present application provides a kind of azimuth gamma test system.

[0045] Referring to Figure 1 and Figure 2 The azimuth gamma test system comprises a host computer 100, a rotating test device 200, a sector signal analyzer 300 and a servo motor 400. The host computer 100 is connected with the sector signal analyzer 300 and the servo motor 400 respectively, the servo motor 400 is connected with the rotating test device 200, and the rotating test device 200 is connected with the sector signal analyzer 300.

[0046] In the embodiment of the present application, the host computer 100 can control the servo motor 400 according to the pre-stored control software, so as to drive the rotating test device 200 to rotate through the servo motor 400. For example, the host computer 100 can set the parameters of the servo motor 400 to control the rotating mode of the servo motor 400 through the control software. Specifically, the host computer 100 can set the rotating speed and rotating direction of the servo motor 400 through the control software, and the servo motor 400 can rotate in response to the control instruction issued by the host computer 100 to ensure that the rotating test device is in a high-speed rotating test working condition, and to provide a test environment close to the actual working condition for the measured device.

[0047] In the embodiment of the present application, the host computer 100 can be a PC computer, a mobile terminal or a computing device such as a mobile phone, and the built-in control software includes rotating test device control software and measured device control software. The rotating test device control software is used to control the servo motor 400 by inputting the rotating speed, rotating time, starting, stopping and other parameters according to the pre-set time sequence, and the measured device control software is used to control the measured device according to the pre-set control logic.

[0048] In some optional embodiments, the host computer 100 and the servo motor 400 can communicate through the form of bus. For example, the host computer 100 and the servo motor 400 can communicate through the RS485 bus communication protocol.

[0049] In some optional embodiments, when the host computer 100 controls the rotating speed and rotating direction of the servo motor 400, the servo motor 400 is integrated with a motor controller, and the rotating speed and rotating direction of the servo motor 400 can be controlled by issuing instructions from the host computer 100 to the motor controller.

[0050] In the embodiment of the present application, the rotating test device 200 is used to fix the installation of the device under test. In the simulation test process, the device under test is installed on the rotating test device 200, and the rotating test device 200 rotates in a preset rotating mode under the driving of the servo motor 400.

[0051] It should be noted that the preset rotating mode includes a preset rotating speed and a preset rotating angle, and the specific parameters can be set by those skilled in the art as needed.

[0052] It should be further noted that the device under test in the embodiment of the present application includes a gamma probe, an azimuth sector measurement module, and an intermediate control module. The gamma probe is used to detect the gamma rays emitted when the radionuclide (mainly uranium, thorium, potassium, etc.) in the gamma radiation source undergoes nuclear decay. The azimuth sector measurement module is used to measure the current azimuth sector information of the device under test, which refers to the sector number information of the current sector in which the gamma probe is located. For example, if the whole 360 degrees is divided into 8 sectors, and the magnetic north direction is taken as the initial 0th sector, the probe will jump to the next sector every 45 degrees. The 8 sectors include 0th sector, 1st sector, 2nd sector, 3rd sector, 4th sector, 5th sector, 6th sector, and 7th sector. For another example, if 360 degrees is divided into 16 sectors, the sector signal includes 0th to 15th sectors. Depending on the number of sectors, the number of sector signals is different, and the sector numbers are sequentially similar, which will not be described here.

[0053] The intermediate control module is powered by an external power supply device. When receiving the control instruction for external power supply sent by the host computer, the external power supply switch is turned on to supply power to the azimuth sector module and the gamma probe. After the azimuth sector module and the gamma probe power supply module are powered, the current sector information and the gamma count in the sector in which the probe is located are collected. The intermediate control module receives the azimuth sector information and the gamma count information, and calculates the duration of the count of the probe in the sector. In the embodiment of the present application, in order to ensure the consistency of the comparison result in the subsequent comparison with the reference value, the intermediate control module also calculates the parameter: count rate. The calculation method of the count rate is the gamma count divided by the duration. After obtaining the parameters: sector signal, gamma count, duration, and count rate, the intermediate control module sends them to the host computer to draw a curve and display.

[0054] In the embodiment of the present application, when the azimuth gamma test system performs simulation test calibration on the device under test, a gamma radiation source needs to be placed at a preset position. After the gamma radiation source is placed, the host computer 100 sends a control instruction to the servo motor 400, so that the servo motor 400 drives the rotating test device 200 in a preset rotating manner. During the rotation of the rotating test device 200 and the device under test, the azimuth sector measurement module in the device under test can generate a sector signal for characterizing all sectors rotated by the device under test, the intermediate control module in the device under test can generate the time for rotating each sector, and the gamma probe in the device under test can detect the gamma count in each sector during the rotation.

[0055] The host computer 100 and the sector signal analyzer 300 can communicate through the form of a bus. For example, the host computer 100 and the sector signal analyzer 300 can communicate through the RS485 bus communication protocol. The host computer 100 obtains the sector signal for characterizing the sector and the duration for rotating each sector generated by the device under test during the rotation.

[0056] The azimuth sector signal of the azimuth sector measurement module and the duration are obtained in the following manner: according to the pre-designed sector number, the angle size of each sector is calculated; in each rotation period, when the gamma probe passes the first boundary of a sector, the first time is recorded and the sector signal is generated in the form of a pulse, when the gamma probe passes the second boundary of the sector, the second time is recorded, the first time is subtracted from the second time, and the duration is obtained. The logic and timing relationship of the sector angle measurement and the pulse signal output of the measurement module is shown in the following table. Figure 7 For example, taking 8 sectors as an example, the pulse signals IT0 and IT1 output by the two I / O ports of the single-chip microcomputer output the pulse signals for characterizing the azimuth sector information, wherein IT1 outputs the pulse signal for characterizing a specific sector (0 sector) and is used for marking the whole rotation period, and IT0 outputs the pulse signals for characterizing the other sectors (1-7).

[0057] The azimuth sector information measured by the azimuth sector measurement module is directly output in the form of a pulse and transmitted to the host computer for display, which is simple and easy to view, facilitates analysis and comparison with reference data, and improves the accuracy of verification.

[0058] In the embodiment of the present application, the servo motor 400 is integrated with an encoder disc, which is a device capable of recording the current rotation angle information of the motor rotor. The sector signal analyzer 300 calculates the reference sector signal and the reference counting time according to the angle information of the encoder disc, and the calculation method of the reference counting rate is the same as the above-mentioned counting rate calculation method, which will not be described herein. It should be noted that the reference sector signal is used as the reference of the sector signal measured by the azimuth sector measuring device, and the reference counting time is the reference time obtained by the gamma probe rotating through each sector. Since the encoder disc is directly fixed on the motor rotor and rotates with the motor rotor, the angle of the motor rotor and the angle of the encoder disc are often reliable and accurate, and the azimuth sector information calculated according to the angle information is also relatively accurate, so the sector information calculated from the angle information of the encoder disc as the reference sector information is also relatively accurate, which improves the accuracy of the subsequent system verification.

[0059] In order to further improve the accuracy of system verification, the host computer of the present application is further used to calculate the sector information from the angle information of the encoder disc as the reference sector information after obtaining the azimuth sector signal measured by the azimuth sector measuring device, determine the reference magnetic north direction of the encoder disc, and correct the azimuth sector information collected by the azimuth sector measuring device using the reference magnetic north direction of the encoder disc. The specific method is to start the rotating system to carry the measured azimuth sector measuring device to rotate at a preset rotating speed, obtain the azimuth sector signal collected by the azimuth sector measuring device in the rotating state, calculate the Gaussian distribution model of the collected azimuth sector signal, obtain the mean parameter of the Gaussian model, take the mean parameter as the measured magnetic north direction of the azimuth sector measuring device, calculate the difference between the reference magnetic north direction and the measured magnetic north direction, and correct the value of the measured magnetic north direction of the azimuth sector measuring device and the collected azimuth sector information with the difference, so as to ensure that the initial azimuth value of the collected azimuth sector information is consistent with the initial azimuth value of the reference azimuth sector, thereby ensuring the accuracy of the azimuth sector measurement and further improving the accuracy of the verification. The above-mentioned magnetic north direction refers to the direction pointing to the north, which is the reference direction of the initial value of the azimuth sector measurement of the azimuth sector measuring device.

[0060] The host computer 100 is also used to obtain the reference sector signal and the reference counting time from the sector signal analyzer 300, and display the above-mentioned sector signal, time, gamma counting, reference sector signal and reference counting time. For example, the sector signal, time, gamma counting, reference sector signal and reference counting time can be displayed on the host computer 100 in the form of pulse signals, and the host computer 100 is also used to compare the reference sector signal and the sector signal, the reference counting time and the duration time. If the reference sector signal and the sector signal, the reference counting time and the duration time all meet the consistency requirements set in advance, it is determined that the measured device passes the verification.

[0061] In the embodiment of the present application, the measured device is fixedly installed on the rotating test device, the host computer controls the servo motor to drive the rotating test device to rotate in a preset rotating mode, in the rotating process, the sector signal analyzer obtains the reference sector signal and the reference counting time according to the encoder disc in real time, and the gamma count detected by the measured device in each sector in the rotating process is obtained in real time, the host computer obtains the reference sector signal, the reference counting time and the gamma count from the sector signal analyzer in real time, and obtains the sector signal generated by the measured device in the rotating process for characterizing all the sectors rotated by the measured device and the time for rotating each sector from the measured device, the reference sector signal, the reference counting time, the gamma count, the sector signal and the time are displayed on the host computer, and the reference sector signal and the sector signal, the reference counting time and the time are compared respectively, so that the simulation test calibration of the azimuth gamma is realized.

[0062] In order to meet the power demand of each device, the azimuth gamma test system can include three power supply modules. The first power supply, the second power supply and the third power supply are connected to 220V alternating current. The first power supply can convert 220V alternating current into 48V output voltage to supply power to the measured device, the second power supply can convert 220V alternating current into the voltage required by the sector signal analyzer 300 to supply power to the sector signal analyzer 300, and the third power supply can convert 220V alternating current into the voltage required by the motor controller to supply power to the motor controller. In order to ensure the normal operation and safety of the measured device in special situations such as short circuit, serious overload and under-voltage, air switches can be respectively arranged between the first power supply module, the second power supply module and the third power supply module and the 220V alternating voltage.

[0063] In order to ensure that the measured device can be stably fixed on the rotating test device in the high-speed rotating environment to smoothly and efficiently complete the test of the measured device, the present application sets specific clamps and wiring channels for the measured device on the rotating test device to ensure that the measured device can be fixedly installed on the rotating test device while ensuring normal power supply. The specific clamps and wiring channels will be described in detail below. Figures 3 to 7

[0064] Figure 3 The structure schematic diagram of the rotating test device according to the embodiment of the present application is shown.

[0065] Referring to Figure 3 ​The rotating test device 200 comprises a test platform 210 and a slip ring assembly 220. The test platform 210 is used for fixedly mounting a device under test and is connected with the servo motor 400, and can rotate in a preset rotating mode under the driving of the servo motor 400. The slip ring assembly 220 is connected with the sector signal analyzer 300 and the test platform 210 respectively, and the slip ring assembly 220 is also used for electrical connection with the device under test, and the signal lead-out wire of the device under test is bundled through the slip ring assembly 220, so that the entanglement and confusion of the signal lead-out wire in the rotating process can be prevented.

[0066] In some embodiments, referring to Figure 3 and Figure 6 , the test platform 210 comprises a first rotor side plate 211, a second rotor side plate 212, a wire routing ring 213, a plurality of connecting rods 214 and a plurality of clamps 215. The first rotor side plate 211 has a first rotating shaft 2111, and the first rotating shaft 2111 is connectable with the output end of the servo motor 400 through a shaft coupling.

[0067] In the embodiments of the present application, the first rotor side plate 211 and the second rotor side plate 212 are oppositely arranged, each connecting rod 214 is connected with the first rotor side plate and the second rotor side plate 212 respectively, and the clamp 215 is detachably arranged between two adjacent connecting rods 214 and connected with the first rotor side plate 211 and the second rotor side plate 212 respectively.

[0068] In some optional implementations, the end faces of the first rotor side plate 211 and the second rotor side plate 212 can be octagonal, the connecting rod 214 is connected at the intersection of two adjacent edges of the octagon, and the clamp 215 is connected to the edge of the octagon. That is, the rotating test platform 210 formed by the first rotor side plate 211, the second rotor side plate 212, the connecting rod 214 and the clamp 215 is an octahedron. Of course, the rotating test platform 210 can also be a hexahedron, a dodecahedron, etc., which is not limited in the present application.

[0069] Further, referring to Figure 4 and Figure 5 , an L-shaped slot is formed on each end face of the first rotor side plate 211 and the second rotor side plate 212, one end of the clamp 215 is clamped in the L-shaped slot of the first rotor side plate 211, and the other end is clamped in the L-shaped slot of the second rotor side plate 212, which can prevent the clamp 215 from falling off during the rotation of the rotating test platform 210. For example, two L-shaped slots can be formed on each end face of the first rotor side plate 211 and the second rotor side plate 212. One end of the clamp 215 is clamped in the two L-shaped slots of the first rotor side plate 211, and the other end of the clamp 215 is clamped in the two L-shaped slots of the second rotor side plate 212, and a rectangular fixing space is formed by the four L-shaped slots, so that the clamp 215 can be more stably fixed.

[0070] In some optional embodiments, a hand screw can be arranged at the connection between the first rotor side plate 211 and the clamp 215 and the connection between the second rotor side plate 212 and the clamp 215, and the clamp 215 is further fixed by the hand screw after being clamped in the L-shaped slot, so that the clamp 215 can be further prevented from falling off during the rotation of the rotating test platform 210.

[0071] Moreover, when the device under test is tested, the device under test includes the gamma probe, the azimuth sector measurement module and the intermediate control module, the weights of the three devices under test are different, and the power imbalance problem can be caused during the rotation of the rotating test platform 210. In order to solve the problem of power balance, at least one counterweight is detachably arranged on each clamp 215, so that the weights of the devices under test installed on the test platform 210 are the same, and the problem of power imbalance is reduced. It should be noted that the weight and number of the counterweight are set according to the needs, and the present application does not make specific limitations.

[0072] In the embodiment of the present application, the clamp 215 is used to install the device under test, and since the device under test includes the gamma probe, the azimuth sector measurement module and the intermediate control module, the clamp 215 can include three kinds of clamps. Among them, one kind of clamp 215 is used to install the gamma probe, another kind of clamp 215 is used to install the azimuth sector measurement module, and the last kind of clamp 215 is used to install the intermediate control module.

[0073] In some optional embodiments, a fixing groove can be arranged on each clamp 215 to fix the device under test, that is, one kind of fixing groove is arranged on each clamp 215, and different fixing grooves are used to fix different devices under test. Since the design of the clamp takes into account that the circuit board in the oil logging industry has no fixing hole, only a region of one to two millimeters on both sides can be clamped, and the circuit board is embedded in the fixing groove to complete the fixing by designing the fixing groove. For different devices under test, the fixing grooves are different, the azimuth sector measurement module is embedded in the fixing groove of the clamp, and is fixed with the surrounding fixing hole through the screws or screws around the fixing groove.

[0074] It should be noted that the size, depth and the like of the fixing groove can be set according to the device under test, and the embodiment of the present application is not limited. It should be further noted that when the device under test is fixed in the fixing groove, the fixing manner of the device under test is not limited by the present application, as long as the device under test is not fallen off during the rotation.

[0075] In other embodiments, other ways can also be used to install the gamma probe, the azimuth sector measurement module and the intermediate control module, as long as the gamma probe, the azimuth sector measurement module and the intermediate control module are not fallen off with the rotation of the rotating test platform 210.

[0076] In the process of analog test calibration, the rotating test device 200 drives the device under test to rotate, and the signal leads among the device under test, the sector signal analyzer 300 and the host computer 100 will be entangled and confused due to the large number of signal leads among the host computer 100, the sector signal analyzer 300 and the device under test. To solve this problem, the wiring ring 213 and the slip ring assembly 220 can be arranged on the rotating test device 200, the signal leads are led out from the slip ring assembly 220 through the wiring ring 213 and are bundled to facilitate the connection of the signal leads to the host computer 100 or the sector signal analyzer 300.

[0077] In some embodiments, continuing to refer to Figure 1 The first power strip 2141 is arranged on the connecting rod 214, and the first power strip 2141 has a plurality of exposed connection terminals. The connection terminals can be used for connection among the gamma probe, the azimuth sector measurement module and the intermediate control module. There is a separate connection line for each connection terminal inside the first power strip 2141. As an optional implementation, a wire slot is formed on the back of the connecting rod 214, and the connection line can be arranged in the wire slot.

[0078] For example, one connecting rod 214 is arranged between each two adjacent clamps 215. When the device under test installed on the adjacent two clamps 215 needs to be connected, the lead can be connected to the connection terminal on the first power strip 2141 of the connecting rod 214, so as to prevent the lead from falling off or flying out when the rotating test platform 210 rotates at high speed.

[0079] In some embodiments, the wiring ring 213 is arranged between the first rotor side plate 211 and the second rotor side plate 212 and close to the second rotor side plate 212, continuing to refer to Figure 6 The wiring ring 213 has a center hole, and the wiring ring 213 is provided with a second power strip 2131. The second power strip 2131 has a plurality of exposed connection terminals. The connection line on the first power strip 2141 is connected to the connection terminal on the second power strip 2131. Each connection terminal on the second power strip 2131 also has a separate connection line, which is led out from the center hole of the wiring ring 213 after being bundled and connected to the slip ring assembly 220.

[0080] In some optional implementations, the wiring ring 213 can be fixedly connected with the second rotor side plate 212. In other optional implementations, the wiring ring 213 can also be connected with the second rotor side plate 212 through the bundled connection line thereof.

[0081] In the embodiment of the present application, the slip ring assembly 220 comprises a slip ring 221, a slip ring adapter 222 and a bearing slip ring seat 223. The slip ring 221 is connected with the slip ring adapter 222 and is arranged in the bearing slip ring seat 223.

[0082] Referring to Figure 5 The second rotor side plate 212 has a second rotating shaft 2121 which is a hollow structure. The connection wires bundled by the wire routing ring 213 pass through the second rotating shaft 2121 and are connected with the slip ring adapter 222, and are led out to the sector signal analyzer 300 through the slip ring 221, so that the entanglement and confusion of the connection wires can be prevented.

[0083] It can be seen that the wire routing channel on the rotating test device comprises in sequence the first power strip 2141, the second power strip 2131, the central through hole of the wire routing ring 213, the hollow structure of the second rotating shaft 2121 and the slip ring 221. Since the second power strip 2131, the central through hole of the wire routing ring 213 and the hollow structure of the second rotating shaft 2121 are all located inside the rotating test device, the first power strip 2141 is used for electrical connection between the gamma probe, the azimuth sector measurement module and the intermediate control module, the second power strip 2131 leads the connection wires on the first power strip 2141 into the interior of the rotating test device, and finally leads out to the slip ring 221 through the hollow structure of the second rotating shaft 2121, so that the measured device can work normally during rotation and the entanglement and confusion of the wires can be prevented.

[0084] In some embodiments, continuing to refer to Figure 1 The azimuth gamma test system further comprises a bearing support 231, a first motor support 232 and a second motor support 233. The bearing support 231 is arranged below the slip ring assembly 220 and is used for supporting the slip ring assembly 220. The first motor support 232 is arranged below the servo motor 400 and is used for supporting the servo motor 400. The second motor support 233 is arranged below the shaft coupling and is used for supporting the shaft coupling. In the embodiment of the present application, by arranging the bearing support 231, the first motor support 232 and the second motor support 233, the position of the rotating test device can be prevented from deviating during high-speed rotation.

[0085] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not described in detail in order not to obscure the understanding of the present specification.

[0086] Furthermore, those skilled in the art will recognize that, in keeping with the practice of the patent arts, unless otherwise indicated herein, the various embodiments described herein can be employed separately or in any combination thereof. For example, in the claims below, any of the claimed embodiments can be used in any combination.

[0087] As used herein, unless otherwise indicated, the use of the ordinal adjectives "first," "second," etc., are to add specificity and difference to material having same name but different characteristics. For example, a first and a second component can be composed of the same kind of material that is used to provide composition A and composition B.

[0088] While the application has been described in terms of several embodiments, those skilled in the art will recognize that the application can be practiced with modifications and alterations limited only by the spirit and scope of the claims. Additionally, although this description has used examples to disclose the principles of the application, a wide number of further modifications can be implemented in accordance with its scope. Accordingly, the disclosure of examples of implementation should not be deemed to limit the scope of the application set forth in the claims.

Claims

1. A directional gamma testing system, characterized by, The application relates to a rotating test device, a servo motor, a sector signal analyzer and a host computer, wherein the host computer is connected with the sector signal analyzer and the servo motor respectively, the servo motor is connected with the rotating test device, and the rotating test device is used for fixedly mounting a measured device. The servo motor is used for driving the rotating test device to rotate in a preset rotating mode according to a control instruction of the host computer. The sector signal analyzer is used for obtaining a reference sector signal and a reference counting time according to an encoding disc, and is also used for obtaining a gamma count detected by the measured device in each sector during rotation. The host computer is also used for obtaining the reference sector signal, the reference counting time and the gamma count from the sector signal analyzer, and obtaining a sector signal and a duration of each sector generated by the measured device during rotation, displaying the reference sector signal, the reference counting time, the gamma count, the sector signal and the duration, comparing the reference sector signal with the sector signal and the reference counting time with the duration respectively, and determining that the measured device passes the verification if the consistency meets a preset consistency requirement. The rotating test device comprises a test platform and a slip ring assembly. The test platform is connected with the servo motor and used for fixedly mounting the measured device. The slip ring assembly is connected with the sector signal analyzer and the test platform respectively, and is also used for electrically connecting with the measured device. The test platform comprises a first rotor side plate, a second rotor side plate, a wiring ring, a plurality of connecting rods and a plurality of clamps. The first rotor side plate and the second rotor side plate are oppositely arranged, each connecting rod is fixedly connected with the first rotor side plate and the second rotor side plate, and the clamps are detachably arranged between adjacent two connecting rods and connected with the first rotor side plate and the second rotor side plate respectively. The wiring ring is arranged between the first rotor side plate and the second rotor side plate. The first rotor side plate is connected with the servo motor, and the second rotor side plate is connected with the slip ring assembly. First plug strips are arranged on the connecting rods, second plug strips are arranged on the wiring ring, and the first plug strips and the second plug strips are electrically connected. The sector signal analyzer is specifically used for: determining an angle range of each sector according to a preset sector number; generating the reference sector signal according to angle information of the encoding disc and generating the reference counting time according to the angle information of the encoding disc and the angle range of each sector in each rotating period. The rotating test device further comprises a bearing support, a first motor support and a second motor support. The slip ring assembly is arranged on the bearing support, and the servo motor is arranged on the first motor support and the second motor support. At least one counterweight is detachably arranged on the clamp. ​ The host computer is further configured to obtain the azimuth sector signal measured by the azimuth sector measuring device, calculate the sector information as the reference sector information by using the angle information of the encoding disc, determine the reference magnetic north direction of the encoding disc, and correct the azimuth sector information collected by the azimuth sector measuring device by using the reference magnetic north direction of the encoding disc.

2. The azimuthal gamma testing system of claim 1, wherein, The first rotor side plate has a first rotating shaft, and the second rotor side plate has a second rotating shaft; The slip ring assembly comprises a slip ring, a slip ring adapter and a bearing slip ring seat; The slip ring is connected with the slip ring adapter and is arranged in the bearing slip ring seat; The first rotating shaft is connected with the servo motor; The slip ring adapter is connected with the second rotating shaft and is electrically connected with the second plug-in row, and the slip ring is electrically connected with the sector signal analyzer.

3. The azimuthal gamma test system of claim 2, wherein, The second rotating shaft is a hollow structure.

4. The azimuthal gamma test system of claim 1, wherein, An L-shaped slot is arranged on the first rotor side plate and / or the second rotor side plate, and the L-shaped slots are arranged between adjacent two connecting rods. The clamp is arranged in the L-shaped slot.

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