A zero drift test sealed box

Abstract

The utility model relates to instrument detection technical field especially, it relates to a zero drift test seal box, the utility model discloses zero drift test seal box's box and lid adopt the design of can separate, it is convenient for staff to dismouting ultrasonic measurement module later period, the box is provided with suction integrated hole, like this can fill in inert gas or vacuum extraction to the box, adapts two different detection environment needs. The lid can be closed box body simultaneously still can with ultrasonic measurement module and press tightly on detection station, can avoid ultrasonic measurement module loose in the process of detection, influence detection result. Besides, the power module is provided on the both sides of the box, and it is convenient to power supply to ultrasonic measurement module, provides normal detection basis for ultrasonic measurement module.

Description

Technical Field

[0001] This utility model relates to the field of instrument testing technology, and in particular to a zero-drift test sealed box. Background Technology

[0002] Zero drift refers to the slow shift in output signal in a measurement or control system when the input signal is zero, due to changes in time or environmental conditions (such as temperature, humidity, power supply voltage, etc.). This phenomenon can lead to measurement errors; the system may output a non-zero value even without an input signal. Therefore, measuring instruments are generally tested for zero drift before leaving the factory, and then corrected through calibration or hardware adjustments to improve the measurement accuracy.

[0003] Currently, ultrasonic metrology modules need to be tested for zero drift using specialized testing equipment before leaving the factory. This equipment is complex, bulky, and capable of testing multiple modules simultaneously. When workers need to install ultrasonic metrology modules outdoors, although the modules have been calibrated before leaving the factory, changing environmental factors during transportation and storage may cause zero drift to reappear. Therefore, to protect the accuracy of subsequent metrology results, workers typically perform a secondary test on-site to ensure the accuracy of the ultrasonic metrology modules. However, there is currently no relatively simple and portable testing equipment available on the market; therefore, this application addresses this issue. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a zero-drift test sealed box for testing ultrasonic metering modules, comprising: The housing has several testing stations inside for installing ultrasonic metering modules, and the housing has a suction port. The lid is capable of sealing the box body and pressing the ultrasonic metering module against the testing station. A power supply module, which is installed on the enclosure, is used to supply power to the ultrasonic metering module.

[0005] In some possible embodiments, one side of the lid is hinged to one side of the box body, and the lid is provided with a plurality of buckles on its periphery, and the box body is provided with a plurality of pull tabs that cooperate with the buckles one by one on its periphery.

[0006] In some possible embodiments, a fitting edge is provided on one side of the opening of the box, an annular groove is provided on the fitting edge, and a sealing element is provided in the annular groove, so that the box cover can abut against the sealing element when it is closed on the box.

[0007] In some possible embodiments, at least one push handle is provided on the side of the lid away from the hinge.

[0008] In some possible embodiments, the housing is provided with mounting holes that connect to a connecting pipe, and the connecting pipe is sealed with a sealing head.

[0009] In some possible embodiments, the cover is provided with a plurality of fixing holes at the corresponding positions of the testing station, and each fixing hole is provided with an elastic clamping post, the outward end of the elastic clamping post being able to press the ultrasonic metering module against the corresponding testing station.

[0010] In some possible embodiments, each of the testing stations is provided with a plurality of support platforms, and each of the support platforms is provided with a locking position. The ultrasonic metering module is locked in the locking position of all the support platforms, and the two support platforms at both ends of each testing station can restrict the two ends of the ultrasonic metering module.

[0011] In some possible embodiments, the box is provided with a handle.

[0012] In some possible embodiments, the housing is integrally cast from aluminum alloy.

[0013] Compared to existing technologies, the advantages of this invention are as follows: The zero-drift test sealing box of this invention features a detachable design for its body and lid, facilitating the disassembly and assembly of the ultrasonic metrology module. The body is equipped with an integrated suction port, allowing for the filling of the box with inert gas or the creation of a vacuum, adapting to two different testing environment requirements. The lid, while sealing the box, also secures the ultrasonic metrology module firmly against the testing station, preventing it from loosening during testing and affecting the results. Furthermore, power supply modules are located on both sides of the box, facilitating power supply to the ultrasonic metrology module and providing a foundation for normal testing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ; Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure after removing the lid in an embodiment of the present invention.

[0016] Reference numerals in the attached drawings: Ultrasonic metering module 10, including housing 20, detection station 21, suction integrated hole 22, pull buckle 23, fitting edge 24, annular groove 25, sealing element 26, connecting pipe 27, sealing head 28, support platform 29, housing cover 30, hinge 31, buckle 32, push handle 33, elastic clamping column 34, power supply module 40. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0018] Reference Figures 1 to 4 The zero-drift test sealed box shown is used to test an ultrasonic metering module 10. It includes a box body 20, a box cover 30, and a power supply module 40. The box body 20 is provided with several testing stations 21 for installing the ultrasonic metering module 10. The box body 20 is provided with a suction integrated hole 22. The box cover 30 can seal the box body 20 and press the ultrasonic metering module 10 against the testing station 21. The power supply module 40 is installed on the box body 20 and is used to supply power to the ultrasonic metering module 10.

[0019] Specifically, the housing 20 and / or the cover 30 are integrally cast from aluminum alloy. The suction port 22 can be directly connected to an external vacuum equipment or a methane supply tank. A connecting pipe is connected to the suction port 22 for easy connection to external equipment. In this application, the power supply module 40 can be implemented with a cable tray structure, which is provided with several quick connectors for quick connection to the connectors on the ultrasonic metering module 10.

[0020] The zero-drift test sealed box features a detachable body 20 and lid 30, facilitating the disassembly and assembly of the ultrasonic metering module 10. The body 20 has an integrated suction port 22, allowing for the filling of the body with inert gas or the creation of a vacuum, adapting to two different testing environments. The lid 30, while sealing the body 20, also secures the ultrasonic metering module 10 firmly against the testing station 21, preventing it from loosening during testing and affecting the results. Furthermore, power supply modules 40 are located on both sides of the body 20, providing power to the ultrasonic metering module 10 and ensuring its proper operation.

[0021] In some possible embodiments, one side of the lid 30 is hinged to one side of the body 20 via a hinge 31. The lid 30 has several buckles 32 around its periphery, and the body 20 has several pull tabs 23 that engage with the buckles 32 one by one. Since the body 20 is square, the lid 30 is also square, and each side of the body 20 has a pull tab 23. Furthermore, to improve sealing, two pull tabs 23 are provided on the side of the lid 30 with the longer side.

[0022] Reference Figure 3 As shown, a fitting edge 24 is provided on one side of the opening of the box body 20, and an annular groove 25 is provided on the fitting edge 24. A sealing element 26 is provided in the annular groove 25, and the box cover 30 can abut against the sealing element 26 when it is closed on the box body 20. There can be multiple annular grooves 25, and multiple sealing elements 26 can be provided to improve the sealing between the box cover 30 and the box body 20.

[0023] In addition, since the lid 30 is relatively thick and heavy, at least one push handle 33 is provided on the side of the lid 30 away from the hinge 31 in order to open the lid 30. In order to facilitate carrying this sealed case later, a handle 2a is provided on the case body 20.

[0024] join Figure 2 As shown, the housing 20 has mounting holes that connect to a connecting pipe 27. A sealing head 28 is attached to the connecting pipe 27, and the sealing head 28 and the connecting pipe 27 are connected by a threaded connection. When it is necessary to vent the air from the housing 20, simply open the sealing head 28 to release the air. After the entire sealed housing is filled with methane, the connecting pipe 27 is then sealed again with the sealing head 28. This design is simple and convenient, and adaptable to two different test conditions.

[0025] Reference Figure 3As shown, in order to restrict the position of the ultrasonic metering module 10 on the testing station 21 during the testing process and to prevent the ultrasonic metering module 10 from becoming loose and affecting the measurement results, the cover 30 is provided with several fixing holes at the corresponding positions of the testing station 21. Each fixing hole is provided with an elastic clamping post 34. The outward end of the elastic clamping post 34 can press the ultrasonic metering module 10 against the corresponding testing station 21. One end of the elastic clamping post 34 is screwed into the fixing hole by a stud. When the cover 30 is closed on the housing 20, the elastic clamping post 34 can press against the side of the ultrasonic metering module 10 on the corresponding side.

[0026] Refer to 3 and Figure 4 As shown, to improve the stability of the ultrasonic metering module 10 on the testing station 21, each testing station 21 is provided with several support platforms 29, and each support platform 29 is provided with a locking position. The ultrasonic metering module 10 is locked onto the locking positions of all the support platforms 29. The two support platforms 29 at both ends of each testing station 21 can restrict the two ends of the ultrasonic metering module 10. In fact, each testing station 21 is provided with three support platforms 29. The middle support platform 29 is used to support the middle part of the ultrasonic metering module 10, and the remaining two support and lock the two ends of the ultrasonic metering module 10 respectively.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A zero-drift test sealed box for testing ultrasonic metering modules, characterized in that, include: The housing has several testing stations inside for installing ultrasonic metering modules, and the housing has a suction port. The lid is capable of sealing the box body and pressing the ultrasonic metering module against the testing station. A power supply module, which is installed on the enclosure, is used to supply power to the ultrasonic metering module.

2. The zero-drift test sealed box according to claim 1, characterized in that, One side of the box lid is hinged to one side of the box body via a hinge. Several buckles are provided around the box lid, and several pull buckles that cooperate with the buckles are provided around the box body.

3. A zero-drift test sealed box according to claim 1 or 2, characterized in that, A fitting edge is provided on one side of the opening of the box, and an annular groove is provided on the fitting edge. A sealing element is provided in the annular groove, and the box cover can abut against the sealing element when it is closed on the box.

4. The zero-drift test sealed box according to claim 2, characterized in that, At least one push handle is provided on the side of the box cover away from the hinge.

5. A zero-drift test sealing box according to claim 1, characterized in that, The housing is provided with mounting holes, which are connected to a connecting pipe, and a sealing head is provided on the connecting pipe.

6. The zero-drift test sealed box according to claim 1, characterized in that, The cover has several fixing holes at the corresponding positions of the testing station. Each fixing hole has an elastic clamping post, and the outward end of the elastic clamping post can press the ultrasonic metering module against the corresponding testing station.

7. A zero-drift test sealed box according to claim 1, characterized in that, Each of the testing stations is provided with several support platforms, and each support platform is provided with a locking position. The ultrasonic metering module is locked in the locking position of all the support platforms. The two support platforms at both ends of each testing station can restrict the two ends of the ultrasonic metering module.

8. A zero-drift test sealed box according to claim 1, characterized in that, The box is equipped with a handle.

9. A zero-drift test sealed box according to claim 1, characterized in that, The enclosure is integrally cast from aluminum alloy.

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