Calibrating device capable of clamping radar liquid level meters of different models

Abstract

The utility model provides a calibrating device capable of clamping different types of radar liquid level meters, and belongs to the technical field of radar liquid level meter calibrating equipment. According to the device, the laser interferometer and the reflecting plate are arranged at the two ends of the displacement track, the radar liquid level meter is arranged between the laser interferometer and the reflecting plate and slides on the displacement track along with the displacement table, and the distance between the lower clamping block and the upper clamping block is adjustable, so that the problems that in the prior art, a calibrating device is low in efficiency and high in calibrating precision are solved. And when the same set of device is used for calibrating liquid level timing of radars of different models, adjustment is troublesome. The device comprises a displacement track, a laser interferometer, a reflecting plate and a displacement table sliding along the displacement track, the radar liquid level meter and the reflecting mirror group are both mounted on the displacement table and slide along with the displacement table, the radar liquid level meter is opposite to the reflecting plate, and the reflecting mirror group is opposite to the interference mirror group; a lifting seat is fixedly installed on the displacement table, a clamping seat is fixedly installed on the lifting seat, a radar liquid level meter is installed in the clamping seat, and the distance between two clamping blocks of the clamping seat is adjustable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the verification equipment of radar liquid level meter, especially relates to a kind of verification device capable of clamping different models radar liquid level meter. BACKGROUND

[0002] Radar liquid level meter is one of the automatic measuring instruments frequently used by military basic oil depot to measure the liquid level height of oil in tank, and is a kind of liquid level measuring instrument using microwave technology, with precision up to 1mm;It has the advantages of safety and reliability, high precision, no blind area, non-contact measurement, long service life and almost no influence on the change of physical characteristics of measured medium.

[0003] To ensure that radar liquid level meter meets the requirements of metrological verification, and to ensure that the measured data is effective and reliable, the radar liquid level meter used should be verified annually according to the requirements of JJG 971-2019 verification regulation. There are mainly two kinds of verification methods for radar liquid level meter inside and outside the army at present;One is to use artificial measuring rod to verify the liquid level meter;The other is to use length standard device with high accuracy for verification, that is, comparison method. These two methods need to use manual measurement method to measure the medium height in container, and use the measurement value as the standard value of liquid level, and use the measurement value of radar liquid level meter as test value, to judge whether radar liquid level meter meets the measurement performance requirements of metrological verification regulation by comparing the error between standard value and test value.

[0004] The verification task of each military branch metrological verification department is very heavy every year, and the existing force identification cycle is long using the above verification method, which is difficult to meet the cycle demand of army verification. At the same time, it is troublesome to adjust the same set of verification device when verifying different models of radar liquid level meter. Therefore, it is necessary to develop a set of radar liquid level meter verification device with high automation and adaptability to multiple models. INVENTION CONTENTS

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a kind of verification device capable of clamping different models radar liquid level meter, to solve the problems that the verification device efficiency of radar liquid level meter in prior art is low, the existing verification method is difficult to meet the cycle demand of army verification when facing the heavy verification task of each military branch metrological verification department every year, and it is troublesome to adjust the same set of verification device when verifying different models of radar liquid level meter.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a kind of verification device capable of clamping different models radar liquid level meter, comprising:

[0007] Displacement track, as horizontal reference surface;

[0008] The laser interferometer assembly comprises a laser interferometer, an interferometer mirror group and a mirror group, the laser interferometer is installed at the left end of the displacement track, the interferometer mirror group is relatively static with the laser interferometer;

[0009] The reflection plate assembly is installed at the right end of the displacement track;

[0010] The displacement table is installed between the laser interferometer and the reflection plate assembly and slides along the displacement track;

[0011] The power assembly drives the displacement table to slide on the displacement track;

[0012] The radar liquid level meter and the mirror group are installed on the displacement table and slide with the displacement table on the displacement track, the radar liquid level meter and the reflection plate assembly are opposite, and the mirror group and the interferometer mirror group are opposite;

[0013] The lifting seat is fixedly installed on the displacement table, the clamping seat is fixedly installed on the lifting seat, the radar liquid level meter is installed in the clamping seat, the clamping seat comprises a lower clamping block and an upper clamping block, and the distance between the lower clamping block and the upper clamping block is adjustable.

[0014] Optionally, the lower clamping block is fixedly installed on the lifting seat, clamping rods are fixedly installed on the upper end of the lower clamping block, clamping holes are formed in the two sides of the upper clamping block, the two clamping holes are matched with the two clamping rods respectively, the upper clamping block is connected to the lower clamping block, and the clamping bolt is screwed from the top of the clamping rod until the top of the upper clamping block is abutted after the upper clamping block and the lower clamping block clamp the radar liquid level meter.

[0015] Optionally, the opposite surfaces of the lower clamping block and the upper clamping block are arc-shaped and fixedly attached with rubber sleeves.

[0016] Optionally, the displacement track is a double-linear guide rail, which is composed of a plurality of granite guide rail segments, the granite guide rail segment is a convex structure, and the displacement table is made of granite and is a concave structure, and the displacement table and the guide rail segment form an air floating guide rail structure.

[0017] Optionally, the bottom of the guide rail segment is placed on a horizontal plane through a supporting seat, a side adjusting plate is arranged on the side surface of the supporting seat, the lower part of the side adjusting plate is detachably installed on the side surface of the supporting seat, and the top of the side adjusting plate is abutted against the bottom of the guide rail segment.

[0018] Optionally, the laser interferometer assembly further comprises a left positioning seat, a magnetic base, a first magnetic block and a second magnetic block; the left positioning seat is fixedly installed at the left end of the displacement track, the magnetic base is fixedly installed on the left positioning seat, the top of the magnetic base is provided with the first magnetic block, and the bottom of the laser interferometer is provided with the second magnetic block; the laser interferometer is installed on the magnetic base in cooperation with the first magnetic block and the second magnetic block; and the interferometer lens group is fixedly installed on the left positioning seat.

[0019] Optionally, the reflection plate assembly comprises a reflection plate and a right fixing seat; the right fixing seat is fixedly installed at the right end of the displacement track, and the reflection plate is fixedly installed on the right fixing seat in a plug-in manner.

[0020] Optionally, the reflection plate is made of carbon fiber composite material and has a circular shape with a diameter of 1000 mm.

[0021] As described above, the utility model discloses a kind of calibrating devices of transverse radar liquid level meter, at least with following beneficial effects:

[0022] The calibrating device of the transverse radar liquid level meter is designed by laser interferometer and reflection plate assembly at both ends of displacement track, and radar liquid level meter between the two, which slides along with displacement table on displacement track. After displacement table moves a distance, laser interferometer emits light beam, which passes through interferometer lens group to reach transmitting mirror lens group and then returns to interferometer lens group, thereby measuring the moving distance of displacement table. Radar liquid level meter measures the moving distance of displacement table by transmitting microwave to reflection plate assembly and then returning to radar liquid level meter. By comparing the measurement value of radar liquid level meter and the measurement value of laser interferometer, the calibration of radar liquid level meter is completed. Compared with the device used in manual caliper method, water tank method and water tower method in prior art, and other devices used in comparison method, the calibrating device has simple overall structure, and only one staff is needed in laboratory to complete the calibration of radar liquid level meter, which uses less personnel, has high degree of automation, effectively shortens the submission and inspection period of radar liquid level meter. Meanwhile, lifting seat is fixedly installed on displacement table, clamping seat is fixedly installed on lifting seat, radar liquid level meter is installed in clamping seat, and the distance between lower clamping block and upper clamping block in clamping seat is adjustable, which ensures the clamping reliability of the calibrating device for different radar liquid level meters. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Fig. 1 shows a schematic view of the calibrating device of the utility model.

[0024] Figure 2 Fig. 2 shows a schematic view of the principle of manual caliper in prior art.

[0025] Figure 3 A schematic diagram of a laser interferometer assembly of the present application is shown.

[0026] Figure 4 A schematic diagram of a magnetic base of the present application is shown.

[0027] Figure 5 A schematic diagram of a displacement table of the present application is shown.

[0028] Figure 6 A front view of a lifting seat of the present application is shown.

[0029] Element number explanation

[0030] Displacement track 1, guide rail segment 11, support seat 12, side surface adjusting plate 13;

[0031] Laser interferometer assembly 2, laser interferometer 21, interferometer mirror group 22, reflector mirror group 23, left positioning seat 24, magnetic base 25, transverse groove 251, first magnetic block 261, second magnetic block 262, knob seat 27, knob 28, pitch seat 29;

[0032] Reflective plate assembly 3, reflective plate 31, right fixed seat 32;

[0033] Displacement table 4, radar liquid level meter 5, lifting seat 6;

[0034] Clamping seat 7, lower clamping block 71, upper clamping block 72, clamping rod 73, clamping bolt 74. DETAILED DESCRIPTION

[0035] The implementation of the present application will be described by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0036] Please refer to Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions that the present application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application, the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0037] Before introducing the specific embodiment of the utility model, we make further introduction to the background of the calibrating device, calibrating system and calibrating method of the transverse radar liquid level meter.

[0038] The radar liquid level meter belongs to a general radar liquid level meter, which is a measuring instrument based on the time travel principle, radar waves run at the speed of light, and the running time can be converted into a material level signal through electronic components. The probe sends out high-frequency pulses in space at the speed of light, and when the pulse meets the material surface, it is reflected back and received by the receiver in the instrument, and the distance signal is converted into a material level signal.

[0039] At present, the calibration methods of liquid level meters at home and abroad mainly include manual scale method, water tank method, comparison method and water tower method.

[0040] The manual scale method uses a standard steel tape to measure the liquid level of the medium in the container by manual measurement, and uses the measurement value as the standard value of the liquid level. The measurement value of the liquid level meter is used as the test value, and the error between the standard value and the test value is compared to determine whether the liquid level meter meets the measurement performance requirements of the measurement calibration regulation. This method can realize online calibration, saving calibration time and not affecting the normal use of the liquid level meter. However, since the standard device selected by this method is a standard steel tape, its accuracy is not high, which affects the application range of this method. The working schematic diagram of this method is shown in Figure 2 .

[0041] The water tank method, which consists of a water tank, a liquid level meter pressure tank calibration device and a digital pressure calibrator, etc. The calibration of the liquid level meter is carried out by simulating the liquid tank with a water tank with a liquid level indicating device in the laboratory. The standard device used in the water tank method has high accuracy, so the accuracy level of the water tank method is high, and the range of the liquid level meter to be tested is wide. The water tank method is suitable for the calibration of various liquid level meters, and the reading accuracy is high and the operation process is simple. However, the water tank method has a large volume, and a large amount of water and electricity is required for calibration, which consumes a lot of resources in actual operation.

[0042] The water tower method, which is basically the same as the water tank method for calibrating the liquid level meter, has a wider calibration range than the water tank method, and is suitable for liquid level meters with a wider measurement range. The maximum calibration range of the water tower method depends on the height of the water tower. The higher the height of the water tower, the larger the range of the liquid level meter that can be calibrated. The water tower method can calibrate full-range liquid level meters, but the method requires a long time for calibration, and the labor intensity of the calibration operation is very high. In addition, a large amount of water resources is required for calibration, which causes serious waste of water resources, and it is difficult to discharge the wastewater after calibration.

[0043] The comparison method is to use a length measuring instrument with high accuracy as a standard device to calibrate and check a lower grade liquid level meter, to measure the same length value by the standard device and the instrument to be checked, to take the measurement data of the standard device as the true value and the measurement data of the instrument to be checked as the measured value, to investigate the error of the instrument to be checked, and to judge whether the instrument to be checked meets the requirements of the metrological verification regulation.

[0044] At present, there are mainly two methods for detecting the radar liquid level meter in China, one method is to use manual checking to calibrate the liquid level meter, and the other method is to use a length standard device with high accuracy to calibrate the radar liquid level meter to be checked, i.e. the comparison method.

[0045] After introducing different calibration methods of the radar liquid level meter, the calibration device, the calibration system and the calibration method of the utility model will be specifically introduced through different embodiments.

[0046] The following embodiments are only for illustration. The embodiments can be combined, and are not limited to the content shown in the following single embodiment.

[0047] Please refer to Figure 1 , the utility model provides a kind of calibration device of radar liquid level meter, comprising:

[0048] As shown in Figure 1 Displacement track 1 as horizontal reference surface;

[0049] As shown in Figure 1 And Figure 2 Laser interferometer assembly 2, including laser interferometer 21, interference mirror group 22 and mirror group 23, laser interferometer 21 is installed in the left end of displacement track 1, and interference mirror group 22 keeps relative static with laser interferometer 21;Laser interferometer 21 is based on the interference phenomenon of light, and laser beam is divided into two beams, one as reference beam, and the other is reflected to form measurement beam after being irradiated to measured object.When the displacement of measured object occurs, the optical path of measurement beam will change, and interference fringes are generated with reference beam. By detecting the change of interference fringes, the physical quantity such as small displacement and angle change of measured object can be accurately measured.

[0050] As shown in Figure 1 Reflection plate assembly 3 is installed in the right end of displacement track 1;

[0051] As shown in Figure 1 And Figure 5 Displacement table 4 is installed between laser interferometer 21 and reflection plate assembly 3, and slides along displacement track 1;

[0052] A power assembly drives the displacement table 4 to slide on the displacement track 1; the power assembly can be composed of a servo motor system and a drag chain mechanism, or composed of a servo motor system and a pulley, and the specific structure of the power assembly is not described here;

[0053] As shown in Figure 1 , Figure 3 and Figure 5 , the radar liquid level meter 5 and the reflecting mirror group 23 are both installed on the displacement table 4 and slide with the displacement table 4 on the displacement track 1, the radar liquid level meter 5 is opposite to the reflecting plate assembly 3, and the reflecting mirror group 23 is opposite to the interference mirror group 22; that is, the measuring device of the present transverse radar liquid level meter 5 is designed through the structure of the laser interferometer 21 and the reflecting plate assembly 3 at both ends of the displacement track 1, and the radar liquid level meter 5 between the two, which slides with the displacement table 4 on the displacement track 1; after the displacement table 4 moves a distance, the laser interferometer 21 emits a light beam, which passes through the interference mirror group 22 to the transmitting mirror group and then returns to the interference mirror group 22, thereby measuring the moving distance of the displacement table 4; the radar liquid level meter 5 measures the moving distance of the displacement table 4 by transmitting microwaves to the reflecting plate assembly 3 and then returning the microwaves to the radar liquid level meter 5; by comparing the measurement values of the radar liquid level meter 5 and the laser interferometer 21, the calibration of the radar liquid level meter 5 is completed; compared with the devices used in the manual measuring method, the water tank method and the water tower method in the prior art, and other devices used in the comparison method, the overall structure of the present calibration device is simple, and only one worker is needed in the laboratory to complete the calibration of the radar liquid level meter 5, which uses less personnel and has high automation degree, effectively shortening the submission and calibration period of the radar liquid level meter 5; thereby solving the problem that the calibration method of the radar liquid level meter 5 in the prior art is low in efficiency, and the existing calibration method is difficult to meet the cycle demand of the army calibration in the face of heavy calibration tasks of the measurement and calibration departments of various military branches every year.

[0054] In another embodiment, please refer to Figure 1 and Figure 5 , the displacement track 1 is a double linear guide rail composed of a plurality of granite guide rail segments 11; specifically, the displacement track 1 is composed of three 4-meter-long granite marble segments, and the granite guide rail segment 11 is a convex structure with two working planes, so it is called a double linear guide rail to better ensure accuracy; the displacement table 4 is also made of granite and has a concave structure, which forms an air-float guide rail structure with the guide rail segment 11; the displacement table 4 and the guide rail form a non-contact air film gap, thereby eliminating friction and wear, not only moving smoothly, but also having higher accuracy; at the same time, remote control automatic operation sliding or manual wireless semi-automatic operation sliding can be realized.

[0055] In another embodiment, please refer toFigure 1 The bottom of the guide rail section 11 is placed on a horizontal plane through a support base 12, the side of which is provided with a side adjusting plate 13, the lower part of which is detachably mounted on the side of the support base 12, and the top of the side adjusting plate 13 abuts against the bottom of the guide rail section 11. By mounting different adjusting plates, the levelness of the guide rail section 11 is finely adjusted, thereby ensuring the accuracy of the calibration of the calibration device.

[0056] In another embodiment, referring to Figure 1 and Figure 3 The laser interferometer assembly 2 further comprises a left positioning seat 24, a magnetic suction base 25, a first magnetic suction block 261 and a second magnetic suction block 262.

[0057] As shown in Figure 3 and Figure 4 , the left positioning seat 24 is fixedly installed at the left end of the displacement track 1, the magnetic suction base 25 is fixedly installed on the left positioning seat 24, the top of the magnetic suction base 25 is provided with the first magnetic suction block 261, and the bottom of the laser interferometer 21 is provided with the second magnetic suction block 262; the laser interferometer 21 is installed on the magnetic suction base 25 through the cooperation of the first magnetic suction block 261 and the second magnetic suction block 262; the interferometer lens group 22 is fixedly installed on the left positioning seat 24; because the laser interferometer 21 is expensive, this design enables the staff to conveniently and quickly remove the laser interferometer 21 when the calibration device is not in use, and to store it, thereby facilitating the management of valuable equipment.

[0058] In another embodiment, referring to Figure 1 The reflection plate assembly 3 comprises a reflection plate 31 and a right fixing seat 32; the right fixing seat 32 is fixedly installed at the right end of the displacement track 1, and the reflection plate 31 is fixedly installed on the right fixing seat 32 in a plug-in manner; after the reflection plate 31 is vertically plugged into the right fixing seat 32, threaded holes can be formed on the right fixing seat 32, and the reflection plate 31 and the right fixing seat 32 can be fixed from the horizontal direction, thereby ensuring the firmness of the installation of the reflection plate 31.

[0059] In another embodiment, referring to Figure 1 The reflection plate 31 is made of carbon fiber composite material, which uses high-quality carbon fiber raw materials and good basic resin. The carbon fiber plate has good properties such as high tensile strength, corrosion resistance, shock resistance and impact resistance. The reflection range of most radar level meters 5 is within ±50 mm. In order to ensure that the reflection plate 31 can cover the radar wave range of the radar level meter 5 and avoid echo attenuation and other false signals of obstacles, the reflection plate 31 of the project is designed as a circular plate with a diameter of 1000 mm.

[0060] In another embodiment, referring toFigure 5 and Figure 6 The lifting seat 6 is installed on the displacement table 4, and the radar liquid level meter 5 is fixedly installed on the lifting seat 6, so that different radar liquid level meters 5 can be aligned with the center of the reflecting plate 31, and it is ensured that the transmitting plate can cover the radar wave range of the radar liquid level meter 5; the lifting seat 6 can be a hand-operated scissor lifting seat 6 as shown in the figure, or an electric hydraulic telescopic cylinder can be used to realize the lifting function.

[0061] In another embodiment, please refer to Figure 3 and Figure 4 The laser interferometer 21 can be adjusted in pitch, and the specific implementation is that two symmetrical second magnetic blocks 262 are arranged at the bottom front end of the laser interferometer 21, and one second magnetic block 262 is arranged at the rear end of the laser interferometer 21 on the center line; the three second magnetic blocks 262 are arranged in this way to ensure that the laser interferometer 21 is placed stably; the bottom of the second magnetic block 262 is hemispherical; the front end of the magnetic base 25 is provided with two first magnetic blocks 261 to correspond to the two symmetrical second magnetic blocks 262 arranged at the bottom front end of the laser interferometer 21; and the position corresponding to the second magnetic block 262 arranged at the rear end of the laser interferometer 21 is not provided with a first magnetic block 261 at the rear end of the magnetic base 25, but a pitch seat 29 is arranged.

[0062] As shown in Figure 4 , a horizontal groove 251 is formed at the rear end of the magnetic base 25, a knob seat 27 is fixedly installed in the horizontal groove 251, the pitch seat 29 is slidingly installed on the knob seat 27, and a knob 28 is screwed into the knob seat 27 to push the pitch seat 29 to slide on the knob seat 27; as shown in Figure 4 , a recess is formed in the upper middle part of the pitch seat 29, which can be a trapezoidal shape as shown in Figure 4 , or a U shape; the staff drives the pitch seat 29 to slide by rotating the knob 28, so that the second magnetic block 262 is located in the recess of the pitch seat 29 or on the upper plane of the pitch seat 29, thereby realizing the pitch adjustment of the laser interferometer 21; at the same time, because the bottom of the second magnetic block 262 is designed to be hemispherical, it is also ensured that the entire laser interferometer 21 remains stable after the pitch adjustment; by adjusting the pitch angle of the laser interferometer 21, the laser light path is aligned with the pitch axis of the radar liquid level meter 5, thereby further improving the calibration accuracy of the calibration device.

[0063] In another embodiment, please refer to Figure 5The lifting seat 6 is further provided with a clamping seat 7, which comprises a lower clamping block 71 and an upper clamping block 72, the lower clamping block 71 is fixedly installed on the lifting seat 6, the upper ends of the lower clamping block 71 are respectively fixedly installed with clamping rods 73, and the two sides of the upper clamping block 72 are respectively provided with clamping holes; the two clamping holes are respectively matched with the two clamping rods 73, so that the upper clamping block 72 is connected to the lower clamping block 71; the opposite surfaces of the lower clamping block 71 and the upper clamping block 72 are arc-shaped, and are fixedly attached with rubber sleeves; after the upper clamping block 72 and the lower clamping block 71 clamp the radar liquid level meter 5, the clamping bolts 74 are screwed from the top of the clamping rods 73 until they abut against the top of the upper clamping block 72, so as to lock the radar liquid level meter 5; through the above structural design, the shape of the upper clamping block 72 or the rubber sleeve can be adjusted to ensure the clamping reliability of different radar liquid level meters 5 and the fine adjustment of the radar liquid level meter 5 in the pitch direction and the left-right direction.

[0064] In other embodiments, as shown in Figure 3 and Figure 5 A plurality of equidistant threaded holes are formed in the left positioning seat 24; the magnetic base 25 is screwed into the threaded holes and fixedly installed on the left positioning seat 24; a plurality of equidistant threaded holes are formed in the displacement table 4; the lifting seat 6 is screwed into the threaded holes and fixedly installed on the displacement table 4; the installation flexibility of the magnetic base 25 and the lifting seat 6 is increased, and the positions of the magnetic base 25 and the lifting seat 6 can be adjusted in time according to needs, and after adjustment, the bolts are screwed into different threaded holes to achieve the purpose of fixation.

[0065] In summary, the calibration device of the utility model through the structure design of the laser interferometer 21 and the reflection plate assembly 3 at both ends of the displacement track 1 and the radar liquid level meter 5 between the two which slides on the displacement track 1 makes the calibration staff use less and the degree of automation is high, effectively shortens the submission period of the radar liquid level meter 5; the calibration system of the utility model further collects the above-mentioned recorded parameters and calculates through the data processing and analysis module on the basis of the calibration device of the radar liquid level meter 5, compares the parameters measured by the laser interferometer 21 and the parameters measured by the radar liquid level meter 5, and judges the calibration result of the radar liquid level meter 5; the certificate generation module generates the corresponding certificate design according to the judgment result of the data processing and analysis module, reduces the calibration time, and further shortens the submission period of the radar liquid level meter 5; the calibration method of the utility model solves the problems in the prior art that the calibration method of the radar liquid level meter 5 is low in efficiency and the existing calibration method is difficult to meet the cycle demand of the army calibration, through the step design of using the foregoing calibration device and calibration system.

[0066] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A calibration device capable of clamping different types of radar level gauges, characterized in that, include: The displacement trajectory serves as a horizontal reference plane. The laser interferometer assembly includes a laser interferometer, an interferometer mirror group, and a reflector mirror group. The laser interferometer is mounted at the left end of the displacement track, and the interferometer mirror group remains relatively stationary with respect to the laser interferometer. A reflector assembly is installed at the right end of the displacement track; A displacement stage is installed between the laser interferometer and the reflector assembly, and slides along the displacement track; The power unit drives the displacement stage to slide on the displacement track; Both the radar level gauge and the reflector assembly are mounted on the displacement stage and slide on the displacement track as the displacement stage moves. The radar level gauge and the reflector assembly are opposite each other, and the reflector assembly and the interferometer assembly are opposite each other. A lifting seat is fixedly installed on the displacement platform, and a clamping seat is fixedly installed on the lifting seat. The radar level gauge is installed in the clamping seat. The clamping seat includes a lower clamping block and an upper clamping block, and the distance between the lower clamping block and the upper clamping block is adjustable.

2. The calibration device for mounting different types of radar level gauges according to claim 1, characterized in that: The lower clamping block is fixedly installed on the lifting seat, and clamping rods are fixedly installed on both sides of the upper end of the lower clamping block, and clamping holes are opened on both sides of the upper clamping block; The two clamping holes respectively cooperate with the two clamping rods to connect the upper clamping block to the lower clamping block; After the upper clamping block and the lower clamping block clamp the radar level gauge, the clamping bolts are screwed in from the top of the clamping rod until they abut against the top of the upper clamping block.

3. The calibration device capable of clamping different types of radar level gauges according to claim 2, characterized in that: The opposing surfaces of the lower clamping block and the upper clamping block are both arc-shaped and are fixedly fitted with rubber sleeves.

4. The calibration device capable of clamping different types of radar level gauges according to claim 1, characterized in that: The displacement track is a double linear guide rail, which is composed of multiple granite guide rail segments, and the granite guide rail segments have a convex structure. The displacement platform is made of granite and has an inverted concave structure, forming an air-floating guide rail structure with the guide rail section.

5. A calibration device capable of clamping different types of radar level gauges according to claim 4, characterized in that: The bottom of the guide rail section is placed on a horizontal surface by a support base. A side adjustment plate is provided on the side of the support base. The lower part of the side adjustment plate is detachably installed on the side of the support base. The top of the side adjustment plate abuts against the bottom of the guide rail section.

6. The calibration device capable of clamping different types of radar level gauges according to claim 1, characterized in that: The laser interferometer assembly also includes a left positioning base, a magnetic base, a first magnetic block, and a second magnetic block; The left positioning seat is fixedly installed at the left end of the displacement track, the magnetic base is fixedly installed on the left positioning seat, the top of the magnetic base is provided with a first magnetic block, and the bottom of the laser interferometer is provided with a second magnetic block. The laser interferometer is mounted on the magnetic base by the cooperation of the first magnetic block and the second magnetic block; The interference mirror assembly is fixedly mounted on the left positioning seat.

7. The calibration device capable of clamping different types of radar level gauges according to claim 1, characterized in that: The reflector assembly includes a reflector and a right mounting base; The right fixed base is fixedly installed at the right end of the displacement track, and the reflector is fixedly installed on the right fixed base by means of insertion.

8. The calibration device capable of clamping different types of radar level gauges according to claim 1, characterized in that: The reflector is made of carbon fiber composite material and is circular in shape with a diameter of 1000 mm.

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