An ultrasonic vacuum measuring device

Abstract

The utility model provides a kind of ultrasonic vacuum measuring device, for measuring the vacuum degree of the cavity for medium flowing in measured object, including ultrasonic emission probe, ultrasonic receiving probe and secondary transmitter, ultrasonic emission probe and ultrasonic receiving probe are all arranged in the outer lateral wall of measured object, ultrasonic receiving probe can receive the ultrasonic wave signal emitted by ultrasonic emission probe, secondary transmitter is connected with ultrasonic emission probe by first measurement cable, secondary transmitter is connected with ultrasonic receiving probe by second measurement cable.Compared with prior art, the ultrasonic vacuum measuring device disclosed in the utility model not only has simple structure, easy to assemble and disassemble, but also the device does not contact with the medium in the cavity, so it is not affected by the pressure of the medium, stable and reliable during use, and has wider applicability.

Description

Technical Field

[0001] This utility model belongs to the field of nuclear industry measurement technology, and specifically relates to an ultrasonic vacuum measuring device. Background Technology

[0002] In the nuclear industry, vacuum measurement is of paramount importance due to various considerations, including ensuring the safe operation of nuclear facilities, improving the quality of nuclear fuel production, and meeting the high-precision requirements of scientific research experiments.

[0003] Currently, nuclear industry measurements are typically performed using contact methods, such as pressure-sensitive diaphragm vacuum gauges or thermocouple vacuum gauges. However, pressure-sensitive diaphragm vacuum gauges cannot withstand large pressure ranges, as excessive pressure can damage the diaphragm. While thermocouple vacuum gauges can withstand high static pressure, they cannot operate with electricity, as this can also easily damage the vacuum gauge equipment. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an ultrasonic vacuum measuring device that is not affected by pressure, and is not only simple in structure, stable and reliable, but also widely applicable.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An ultrasonic vacuum measuring device is used to measure the vacuum degree of a cavity through which a medium flows within a test object. It is characterized by comprising an ultrasonic transmitting probe, an ultrasonic receiving probe, and a secondary transmitter. Both the ultrasonic transmitting probe and the ultrasonic receiving probe are disposed on the outer wall of the test object, and the ultrasonic receiving probe is capable of receiving ultrasonic signals emitted by the ultrasonic transmitting probe.

[0007] The secondary transmitter is connected to the ultrasonic transmitting probe via a first measuring cable, and the secondary transmitter is connected to the ultrasonic receiving probe via a second measuring cable.

[0008] Preferably, there is one ultrasonic transmitting probe and one ultrasonic receiving probe, and the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively disposed opposite to each other on the two outer side walls of the object being tested.

[0009] Preferably, there is one ultrasonic transmitting probe and at least two ultrasonic receiving probes;

[0010] At least one of the ultrasonic receiving probes is disposed on the opposite side of the ultrasonic transmitting probe, and at least one of the ultrasonic receiving probes is disposed on the same side of the ultrasonic transmitting probe.

[0011] Preferred options also include:

[0012] A first adjustment compensation plate is disposed between the object under test and the ultrasonic transmitting probe;

[0013] The second adjustment compensation plate is disposed between the object under test and the ultrasonic receiving probe.

[0014] Preferably, the first adjustment compensation plate includes a first adjustment compensation plate body, and a first mounting surface and a second mounting surface disposed on both sides of the first adjustment compensation plate body. The contact portion of the first mounting surface with the object under test is configured to conform to the shape of the object under test, and the contact portion of the second mounting surface with the ultrasonic transmitting probe is configured to conform to the shape of the ultrasonic transmitting probe.

[0015] Preferably, the ultrasonic transmitting probe, the first adjustment compensation plate, and the outer wall surface of the object being tested are arranged perpendicularly in sequence.

[0016] Preferably, the width of the first adjustment compensation plate is greater than the width of the ultrasonic transmitting probe.

[0017] Preferably, the second adjustment compensation plate includes a second adjustment compensation plate body, and a third mounting surface and a fourth mounting surface disposed on both sides of the second adjustment compensation plate body. The third mounting surface is configured to conform to the contact portion of the object being tested, and the fourth mounting surface is configured to conform to the contact portion of the ultrasonic receiving probe.

[0018] Preferably, the ultrasonic receiving probe, the second adjustment compensation plate, and the side wall of the object being tested are arranged perpendicularly in sequence.

[0019] Preferably, the width of the second adjustment compensation plate is greater than the width of the ultrasonic receiving probe.

[0020] As can be seen from the above technical solution, when measuring the vacuum degree of the cavity through which the medium flows within the object under test, the secondary transmitter excites and monitors the ultrasonic transmitting probe in real time through the first measuring cable, and excites and monitors the ultrasonic receiving probe in real time through the second measuring cable. After being excited, the ultrasonic transmitting probe converts the command into an ultrasonic signal and sends it out. If the ultrasonic receiving probe can receive the ultrasonic signal, it proves that the cavity of the object under test is not a vacuum; if the ultrasonic receiving probe cannot receive the ultrasonic signal, it proves that the cavity of the object under test is a vacuum. At the same time, the ultrasonic receiving probe can transmit the ultrasonic signal to the secondary transmitter through the second measuring cable. In this way, it can be analyzed whether the inability to receive the signal is due to damage to the ultrasonic receiving probe itself.

[0021] Compared with the prior art, the ultrasonic vacuum measuring device disclosed in this utility model embodiment is not only simple in structure and easy to install and remove, but also does not come into contact with the medium in the cavity, so it is not affected by the medium pressure, is stable and reliable in use, and has a wider range of applications. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the ultrasonic vacuum measuring device disclosed in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of an ultrasonic vacuum measuring device disclosed in another embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100 - the object being tested

[0027] 200-Ultrasonic Emission Probe

[0028] 300-Ultrasonic receiving probe,

[0029] 400 - First Adjustment Compensation Plate

[0030] 500 - Second Adjustment Compensation Plate

[0031] 600-Secondary Transmitter

[0032] 700 - First measuring cable,

[0033] 800 - Second measuring cable,

[0034] 900 - Foreign object. Detailed Implementation

[0035] In view of this, the purpose of this utility model is to provide an ultrasonic vacuum measuring device that is not only simple in structure and easy to install and remove, but also unaffected by pressure, stable and reliable, and widely applicable.

[0036] 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. Please refer to... Figures 1 to 2 .

[0037] Please refer to Figure 1The ultrasonic vacuum measuring device disclosed in this embodiment of the present invention is used to measure the vacuum degree of a cavity for medium flow within a test object 100. It includes an ultrasonic transmitting probe 200, an ultrasonic receiving probe 300, and a secondary transmitter 600. The ultrasonic transmitting probe 200 and the ultrasonic receiving probe 300 are both disposed on the outer side wall of the test object 100. The ultrasonic receiving probe 300 can receive the ultrasonic signal emitted by the ultrasonic transmitting probe 200. The secondary transmitter 600 is connected to the ultrasonic transmitting probe 200 through a first measuring cable 700, and the secondary transmitter 600 is connected to the ultrasonic receiving probe 300 through a second measuring cable 800.

[0038] When measuring the vacuum level of the cavity through which the medium flows within the test object 100, the secondary transmitter 600 excites and monitors the ultrasonic transmitting probe 200 in real time via the first measuring cable 700, and the secondary transmitter 600 excites and monitors the ultrasonic receiving probe 300 in real time via the second measuring cable 800. After being excited, the ultrasonic transmitting probe 200 converts the command into an ultrasonic signal and sends it out. If the ultrasonic receiving probe 300 can receive the ultrasonic signal, it proves that the cavity of the test object 100 is not a vacuum; if the ultrasonic receiving probe 300 cannot receive the ultrasonic signal, it proves that the cavity of the test object 100 is a vacuum. At the same time, the ultrasonic receiving probe 300 can transmit the ultrasonic signal to the secondary transmitter 600 via the second measuring cable 800. In this way, it can be analyzed whether the inability to receive the signal is due to damage to the ultrasonic receiving probe 300 itself.

[0039] Compared with the prior art, the ultrasonic vacuum measuring device disclosed in this utility model embodiment is not only simple in structure and easy to install and remove, but also does not come into contact with the medium in the cavity, so it is not affected by the medium pressure, is stable and reliable in use, and has a wider range of applications.

[0040] It should be noted that the object being tested usually refers to a container or pipe.

[0041] In this invention, the ultrasonic transmitting probe 200 and the ultrasonic receiving probe 300 can simultaneously transmit and receive ultrasonic waves.

[0042] Among them, the ultrasonic transmitting probe 200 and the ultrasonic receiving probe 300 can also withstand high radiation doses in nuclear facilities.

[0043] It should be explained that the inner wall of the test object 100 refers to the side wall that is in contact with the medium, and the outer wall refers to the side wall that is not in contact with the medium.

[0044] This embodiment of the invention does not specifically limit the number or arrangement of the ultrasonic transmitting probe 200 and the ultrasonic receiving probe 300. Any structure that meets the requirements of this invention is within the protection scope of this invention. The ultrasonic transmitting probe 200 can be one, and the ultrasonic receiving probe 300 can be one or more.

[0045] As one embodiment of this utility model, please refer to the following for details. Figure 1 In this embodiment of the invention, both the ultrasonic transmitting probe 200 and the ultrasonic receiving probe 300 are single units, and are respectively disposed opposite to each other on the two outer side walls of the object under test 100. This arrangement makes it easier for the ultrasonic signal emitted by the ultrasonic transmitting probe 200 to be received by the ultrasonic receiving probe 300.

[0046] Since the medium inside the cavity of the object being tested 100 may contain a large number of impurities or foreign objects 900 when it flows, the ultrasonic receiving probe 300 may be blocked by foreign objects 900 when receiving signals during vacuum measurement, resulting in an incorrect determination of the vacuum state.

[0047] As another embodiment of this utility model, please refer to Figure 2 The ultrasonic transmitting probe 200 disclosed in this embodiment of the invention comprises one ultrasonic transmitting probe 200 and at least two ultrasonic receiving probes 300. At least one ultrasonic receiving probe 300 is located on the opposite side of the ultrasonic transmitting probe 200, and at least one ultrasonic receiving probe 300 is located on the same side of the ultrasonic transmitting probe 200. When the ultrasonic transmitting probe 200 emits an ultrasonic signal, it strikes the foreign object 900 and is reflected by the foreign object 900. The reflected signal is then received by the ultrasonic receiving probe 300 located on the same side of the ultrasonic transmitting probe 200, thereby establishing a vacuum measurement. This structure can adapt to complex working conditions of the measured medium and can still achieve vacuum measurement even in the presence of foreign object interference, avoiding erroneous measurements.

[0048] As a further embodiment, the ultrasonic vacuum measuring device disclosed in this utility model embodiment also includes a first adjustment compensation plate 400 and a second adjustment compensation plate 500, wherein the first adjustment compensation plate 400 is disposed between the object under test 100 and the ultrasonic transmitting probe 200, and the second adjustment compensation plate 500 is disposed between the object under test 100 and the ultrasonic receiving probe 300.

[0049] The first adjustment compensation plate 400 includes a first adjustment compensation plate body and a first mounting surface and a second mounting surface disposed on both sides of the first adjustment compensation plate body. The contact portion of the first mounting surface with the object under test 100 is contoured, and the contact portion of the second mounting surface with the ultrasonic transmitting probe 200 is contoured. This configuration ensures that the outer walls of the first adjustment compensation plate 400, the ultrasonic transmitting probe 200, and the object under test 100 are in close contact, which is more conducive to the transmission of ultrasonic signals.

[0050] To ensure that the ultrasonic signal is transmitted and received perpendicularly to the wall surface, the ultrasonic transmitting probe 200, the first adjustment compensation plate 400, and the outer wall surface of the object under test 100 disclosed in this embodiment are sequentially and perpendicularly arranged. The ultrasonic transmitting probe 200, through the first adjustment compensation plate 400, ensures that the signal transmitted within the medium is not refracted by the container or pipe wall and is perpendicular to the medium flow direction, thus preventing the medium flow velocity from being applied to the ultrasonic signal and causing interference.

[0051] As a specific embodiment, when the outer wall of the object being measured 100 is a plane, the first mounting surface can be set as a plane; when the outer wall of the object being measured 100 is an arc surface, for example, when the object being measured 100 is a pipe, the first mounting surface can be set as an arc surface.

[0052] In order to facilitate the installation of the ultrasonic transmitting probe 200 and to enable the ultrasonic transmitting probe 200 to transmit ultrasonic signals vertically, the width of the first adjustment compensation plate 400 disclosed in this embodiment of the present invention is greater than the width of the ultrasonic transmitting probe 200.

[0053] Similarly, the second adjustment compensation plate 500 includes a second adjustment compensation plate body and a third mounting surface and a fourth mounting surface disposed on both sides of the second adjustment compensation plate body. The contact portion of the third mounting surface with the object under test 100 is contoured, and the contact portion of the fourth mounting surface with the ultrasonic receiving probe 300 is contoured. With this configuration, the outer walls of the second adjustment compensation plate 500, the ultrasonic receiving probe 300, and the object under test 100 fit together, which is more conducive to the reception of ultrasonic signals.

[0054] To ensure that the ultrasonic signal is transmitted and received perpendicular to the wall surface, the ultrasonic receiving probe 300, the second adjustment compensation plate 500, and the outer wall surface of the object under test 100 disclosed in this embodiment are sequentially and perpendicularly arranged. The ultrasonic receiving probe 300, through the second adjustment compensation plate 500, ensures that the signal transmitted within the medium is not refracted by the container or pipe wall and is perpendicular to the medium flow direction, thus preventing the medium flow velocity from being applied to the ultrasonic signal and causing interference.

[0055] As a specific embodiment, when the outer wall of the object being measured 100 is a plane, the third mounting surface can be set as a plane; when the outer wall of the object being measured 100 is an arc surface, for example, when the object being measured 100 is a pipe, the third mounting surface can be set as an arc surface.

[0056] In order to facilitate the installation of the ultrasonic transmitting probe 200 and to enable the ultrasonic receiving probe 300 to transmit ultrasonic signals vertically, the width of the second adjustment compensation plate 500 disclosed in this embodiment of the present invention is greater than the width of the ultrasonic receiving probe 300.

[0057] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic vacuum measuring device for measuring the vacuum level of a cavity within an object through which a medium flows, characterized in that, It includes an ultrasonic transmitting probe, an ultrasonic receiving probe, and a secondary transmitter. The ultrasonic transmitting probe and the ultrasonic receiving probe are both disposed on the outer wall of the object being measured. The ultrasonic receiving probe is capable of receiving the ultrasonic signal emitted by the ultrasonic transmitting probe. The secondary transmitter is connected to the ultrasonic transmitting probe via a first measuring cable, and the secondary transmitter is connected to the ultrasonic receiving probe via a second measuring cable.

2. The ultrasonic vacuum measuring device according to claim 1, characterized in that, The ultrasonic transmitting probe and the ultrasonic receiving probe are both one, and the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively disposed opposite to each other on the two outer side walls of the object being tested.

3. The ultrasonic vacuum measuring device according to claim 1, characterized in that, The ultrasonic transmitting probe is one, and the ultrasonic receiving probe is at least two; At least one of the ultrasonic receiving probes is disposed on the opposite side of the ultrasonic transmitting probe, and at least one of the ultrasonic receiving probes is disposed on the same side of the ultrasonic transmitting probe.

4. The ultrasonic vacuum measuring device according to claim 1, characterized in that, Also includes: A first adjustment compensation plate is disposed between the object under test and the ultrasonic transmitting probe; The second adjustment compensation plate is disposed between the object under test and the ultrasonic receiving probe.

5. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The first adjustment compensation plate includes a first adjustment compensation plate body, and a first mounting surface and a second mounting surface disposed on both sides of the first adjustment compensation plate body. The contact portion of the first mounting surface with the object under test is configured to conform to the shape of the object under test, and the contact portion of the second mounting surface with the ultrasonic transmitting probe is configured to conform to the shape of the ultrasonic transmitting probe.

6. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The ultrasonic transmitting probe, the first adjustment compensation plate, and the outer wall of the object being tested are arranged perpendicularly to each other.

7. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The width of the first adjustment compensation plate is greater than the width of the ultrasonic transmitting probe.

8. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The second adjustment compensation plate includes a second adjustment compensation plate body, and a third mounting surface and a fourth mounting surface disposed on both sides of the second adjustment compensation plate body. The third mounting surface is configured to conform to the contact portion of the object being tested, and the fourth mounting surface is configured to conform to the contact portion of the ultrasonic receiving probe.

9. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The ultrasonic receiving probe, the second adjustment compensation plate, and the side wall of the object being tested are arranged perpendicularly in sequence.

10. The ultrasonic vacuum measuring device according to claim 4, characterized in that, The width of the second adjustment compensation plate is greater than the width of the ultrasonic receiving probe.

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