CN117741668A - Alkali metal detection device and detection method - Google Patents
Alkali metal detection device and detection method Download PDFInfo
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- CN117741668A CN117741668A CN202311815615.5A CN202311815615A CN117741668A CN 117741668 A CN117741668 A CN 117741668A CN 202311815615 A CN202311815615 A CN 202311815615A CN 117741668 A CN117741668 A CN 117741668A
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- alkali metal
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- end cover
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- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 103
- 150000001340 alkali metals Chemical class 0.000 title claims abstract description 103
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 26
- 229910052708 sodium Inorganic materials 0.000 description 26
- 239000011734 sodium Substances 0.000 description 26
- 238000002604 ultrasonography Methods 0.000 description 10
- 238000002592 echocardiography Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The embodiment of the application relates to the technical field of materials tested by utilizing ultrasonic waves, in particular to an alkali metal detection device and an alkali metal detection method. The device comprises: the ultrasonic wave processing device comprises a shell, a heating piece, an ultrasonic transmitting part, an ultrasonic receiving part and a processing part. The shell comprises a first end cover, a second end cover and a side wall, wherein the first end cover, the second end cover and the side wall define a containing cavity which is used for being communicated with a cavity to be tested, and when alkali metal exists in the cavity to be tested, the alkali metal can flow into the containing cavity; the heating piece is used for heating the shell so as to enable the alkali metal in the accommodating cavity to be in a liquid state; the ultrasonic transmitting part is used for transmitting ultrasonic signals to the direction of the first end cover; the ultrasonic receiving part is used for receiving the reflected ultrasonic signals; the processing part is configured to determine a plurality of echo times of the ultrasonic signal and determine whether alkali metal exists in the cavity to be tested according to the plurality of echo times. The embodiment of the application utilizes the ultrasonic signal to detect whether the liquid alkali metal exists in the cavity, and is simple to operate.
Description
Technical Field
The embodiment of the application relates to the technical field of materials tested by utilizing ultrasonic waves, in particular to an alkali metal detection device and an alkali metal detection method.
Background
The statements herein merely provide background information related to the present application and may not necessarily constitute prior art. Before the sodium system electromagnetic pump is put into operation, the existence of sodium in a pump groove of the electromagnetic pump is ensured, and the phenomenon of dry combustion of the electromagnetic pump is prevented from causing the burning of the electromagnetic pump. In addition, for the sodium sticking equipment to remove sodium, a set of effective devices are needed to detect and confirm whether the remaining sodium is completely removed.
Disclosure of Invention
The following presents a simplified summary of the application in order to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive overview of the application. It is not intended to identify key or critical elements of the application or to delineate the scope of the application. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
A first aspect of embodiments of the present application provides an alkali metal detection device for detecting the presence or absence of alkali metal in a cavity, the device comprising: the ultrasonic wave processing device comprises a shell, a heating piece, an ultrasonic transmitting part, an ultrasonic receiving part and a processing part. The shell comprises a first end cover, a second end cover and a side wall, wherein the first end cover, the second end cover and the side wall are opposite, the side wall is connected between the first end cover and the second end cover, the first end cover, the second end cover and the side wall define a containing cavity, the containing cavity is used for being communicated with a cavity to be tested, and when alkali metal exists in the cavity to be tested, the alkali metal can flow into the containing cavity; the heating piece is used for heating the shell so as to enable the alkali metal in the accommodating cavity to be in a liquid state; the ultrasonic transmitting part is arranged on the second end cover of the shell and is used for transmitting ultrasonic signals to the direction of the first end cover; the ultrasonic receiving part is arranged on the second end cover of the shell and is used for receiving the reflected ultrasonic signals; the processing part is configured to determine a plurality of echo times of the ultrasonic signal and determine whether alkali metal exists in the cavity to be tested according to the plurality of echo times.
A second aspect of embodiments of the present application provides an alkali metal detection method for detecting, with an apparatus provided in the first aspect of embodiments of the present application, whether an alkali metal is present in a cavity to be detected, the method including: heating the shell; transmitting an ultrasonic signal in the direction of the first end cap; receiving the reflected ultrasonic signals; and determining a plurality of echo times of the ultrasonic signal, and determining whether alkali metal exists in the cavity to be tested according to the echo times.
A third aspect of embodiments of the present application provides an alkali metal detection method for detecting the presence or absence of alkali metal in a container, the method comprising: the ultrasonic transmitting part and the ultrasonic receiving part are arranged at the bottom of the container; heating the vessel so that when alkali metal is present inside the vessel, the alkali metal can liquefy to liquid alkali metal; transmitting an ultrasonic signal to the top of the container by using an ultrasonic transmitting part; receiving the reflected ultrasonic signal by an ultrasonic receiving part; a plurality of echo times of the ultrasonic signal are determined and based on the plurality of echo times, whether an alkali metal is present within the container is determined.
According to the alkali metal detection device and the alkali metal detection method, whether liquid alkali metal exists in the cavity is detected by utilizing the ultrasonic signals, the operation is simple, and the measurement is accurate.
Drawings
To further clarify the above and other advantages and features of the present application, a more particular description of the invention will be rendered by reference to the appended drawings. The accompanying drawings are incorporated in and form a part of this specification, along with the detailed description that follows. Elements having the same function and structure are denoted by the same reference numerals. It is appreciated that these drawings depict only typical examples of the application and are not therefore to be considered limiting of its scope.
FIG. 1 is a schematic cross-sectional view of a detection device provided by an embodiment of the present application;
FIG. 2 is a schematic illustration of a sonde coupled to a pipeline as provided by an embodiment of the present application;
fig. 3 is a schematic view of a connection of a detection device with a container according to an embodiment of the present application.
It should be noted that the drawings are not necessarily to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.
Reference numerals illustrate:
10. a housing; 11. a first end cap; 12. a second end cap; 13. a sidewall; 14. a receiving chamber; 15. a housing;
20. a heating member; 30. an ultrasonic emission part; 40. an ultrasonic receiving section; 50. a processing section; 60. a container; 601. a cavity to be measured; 61. a through hole; 70. a pipe;
100. an alkali metal; 101. a first interface; 102. a second interface; 103. a third interface; 104. a fourth interface; 105. a liquid surface.
Detailed Description
Exemplary embodiments of the present application will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with system-and business-related constraints, and that these constraints will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
It should be noted here that, in order to avoid obscuring the present application due to unnecessary details, only the device structures and/or processing steps closely related to the solution according to the present application are shown in the drawings, while other details not greatly related to the present application are omitted.
The following disclosure provides many different embodiments or examples for implementing the present application. In order to simplify the disclosure of the present application, specific example components and methods are described below. Of course, they are merely examples and are not intended to limit the present application. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.
Before the sodium system electromagnetic pump is put into operation, the existence of sodium in a pump groove of the electromagnetic pump is ensured, and the phenomenon of dry combustion of the electromagnetic pump is prevented from causing the burning of the electromagnetic pump. In addition, for the sodium sticking equipment to remove sodium, whether the remaining sodium is completely removed or not, an effective device is needed for detection and confirmation.
In view of the foregoing, embodiments of the present application provide an alkali metal detection device for detecting whether an alkali metal exists in a cavity to be detected. As shown in fig. 1, fig. 1 shows a schematic cross-sectional view of a detection device provided in an embodiment of the present application. The detection device comprises: the ultrasonic wave generating device comprises a housing 10, a heating element 20, an ultrasonic wave transmitting part 30, an ultrasonic wave receiving part 40 and a processing part 50. The housing 10 comprises opposite first and second end caps 11, 12 and a side wall 13 connected between the first and second end caps 11, 12, the first and second end caps 11, 12 and the side wall 13 defining a receiving chamber 14, the receiving chamber 14 being adapted to communicate with a cavity 601 to be tested, the alkali metal 100 being able to flow into the receiving chamber 14 when the alkali metal 100 is present in the cavity 601 to be tested. The heating member 20 is used to heat the housing 10 so that the alkali metal 100 in the accommodating chamber 14 is in a liquid state. The ultrasonic transmitting part 30 is disposed at the second end cap 12 of the housing 10 for transmitting ultrasonic signals in the direction of the first end cap 11. The ultrasonic receiver 40 is disposed on the second end cap 12 of the housing 10, and is configured to receive the reflected ultrasonic signal. The processing section 50 is configured to determine a plurality of echo times of the ultrasonic signal and determine whether the alkali metal 100 is present in the cavity 601 to be measured according to the plurality of echo times.
The alkali metal detection device provided by the embodiment of the application can detect whether the liquid alkali metal 100 exists in the cavity by utilizing the ultrasonic signal, and is simple to operate and accurate in measurement.
Referring to fig. 1, when the alkali metal 100 is present in the accommodating chamber 14, after the ultrasonic transmitting part 30 transmits the ultrasonic signal to the second end cap 12, the ultrasonic signal propagates toward the second interface 102 (the inner surface of the second end cap 12), and part of the signal is reflected at the second interface 102 to form an echo, and transmitted to the ultrasonic receiving part 40, and the acoustic wave is transmitted to the echo receiving time t1. The rest of the signal passes through the second interface 102 and enters the alkali metal 100, and is reflected at the liquid surface 105 (when the accommodating cavity is full of alkali metal, the liquid surface 105 coincides with the third interface 103 to form 1 reflecting surface) to form an echo, the echo is transmitted to the ultrasonic receiving part 40, and the acoustic wave is emitted to the echo receiving time t2. The level of alkali metal 100 determines the time difference between t2 and t1.
When the alkali metal 100 is not present in the interior of the accommodating chamber 14, after the ultrasonic signal passes through the second interface 102, the signal cannot propagate to the third interface 103, the fourth interface 104 and be reflected back to the ultrasonic receiving part 40 in the gas atmosphere due to scattering or the like. The ultrasonic receiving unit 40 receives only the transmission echo of the second interface 102, and the time from the transmission of the acoustic wave to the reception of the echo is t1.
The processing portion 50 may determine whether there is a corresponding ultrasonic echo returned from the liquid surface of the alkali metal 100 based on the received plurality of ultrasonic echo times.
The inventors of the present application found that the returned ultrasonic signals also include signals received by the ultrasonic receiving unit 40 after being reflected between the first interface 101 and the second interface 102 a plurality of times, and that the echo time of these ultrasonic signals may coincide with the echo time reflected from the liquid surface 105, resulting in a case where it is impossible to accurately determine whether the alkali metal 100 is present.
The inventors of the present application have further found that the amplitude of these echoes formed after a number of reflections between the first interface 101 and the second interface 102 is different from the amplitude of the wave reflected directly from the liquid surface 105, and that by comparing the amplitudes it is possible to determine whether the echoes are reflected directly from the liquid surface 105. It is to be readily understood that "a wave reflected directly from the liquid surface 105" herein means a wave that is reflected from the liquid surface 105 back to be received by the ultrasonic receiving portion 40 after an ultrasonic signal emitted from the ultrasonic transmitting portion 30 propagates to the liquid surface 105 without undergoing any reflection.
Thus, in some embodiments, the processing portion 50 may be configured to determine whether the alkali metal 100 is present in the cavity to be measured 601 according to the amplitude and the time difference between t2 and t1 when there is an echo time within the preset interval among the plurality of echo times. The preset interval may be, for example, a time greater than t1.
In some embodiments, when the processing portion 50 determines that there is one of the echo times corresponding to a wave reflected directly from the liquid surface 105, the height of the liquid surface 105 may be determined based on the reflection time.
In some embodiments, when the liquid level of the alkali metal 100 determined by the processing portion 50 reaches a preset height, the alkali metal may be considered to be present in the cavity 601 to be measured.
In some embodiments, the material of the housing 10 may be 304 stainless steel, for example, which may be connected to the cavity 601 to be tested by welding. The processing unit 50 may be, for example, a single-chip microcomputer. The alkali metal 100 may be, for example, liquid sodium. The frequency of the ultrasound may be, for example, 1MHz and the voltage may be 100V.
Ultrasonic propagation speed v of ultrasonic wave at 304 stainless steel 1 About 5800m/s, and ultrasonic propagation velocity v in liquid sodium at 150 DEG C 2 About 2500m/s. Since the probe and the bottom material of the workpiece have known compositions and dimensions, the time t required for the sound wave emission of the sound wave emitting part to be reflected to the sound wave receiving part for receiving the sound wave can be obtained through calculation or actual measurement. The thickness of the liquid sodium can be calculated from formula (1).
H＝(t 2 -t 1 )÷v 2 ÷2 (1)
T is in 1 For the time taken for the sound wave emitted from the sound wave emitting portion 30 to be reflected to the ultrasonic receiving portion 40 through the second interface 102, t2 is the time taken for the sound wave emitted from the sound wave emitting portion 30 to penetrate the alkali metal 100 through the second interface 102 and to be reflected to the ultrasonic receiving portion 40 through the alkali metal liquid surface 105. And t1 and t2 can be calculated to obtain theoretical data through the workpiece size and the material acoustic data, and whether alkali metal exists or not is judged through comparison between the detected data and the theoretical data. In some embodiments, sodium may be determined to be present when the calculated alkali metal 100 height is greater than 80% of the holding chamber 14 height.
In a specific embodiment, the spacing between the first end cap 11 and the second end cap 12 is10cm, assuming that the temperature of the liquid sodium 100 is 300 ℃, the liquid sodium 100 fills the whole accommodating cavity 14, and at this time, the height H of the liquid sodium 100 is 10cm, the ultrasonic echo time t in sodium can be obtained 1 83 mus. When the temperature of the liquid sodium 100 changes to 100 ℃, the ultrasonic echo time t is corresponding to 1 79 mus. When the temperature of the liquid sodium 100 changes to 500 ℃, the ultrasonic echo time t is corresponding 1 86 mus. It can be seen that the influence of the liquid sodium temperature on the echo time is less than 10% of the total time influence of sodium in the receiving space.
To ensure the reliability of the operation of the detection device, the detection result is determined to be valid when the liquid sodium 100 is filled with 80%, at which time the height H of the liquid sodium 100 (referred to as the effective height) is 8cm and its echo time at 300 ℃ is 66 μs. When the sodium temperature was lowered to 100 ℃, the flow channel height corresponding to 66. Mu.s was 8.4cm, which was considered to be in the sodium-present state. Namely, the condition for judging the existence of the sodium in the workpiece is that the echo time is more than or equal to 66 mu s.
It follows that the effective height of the liquid surface 105 can be determined from the distance between the first end cap 11 and the second end cap 12, and the lower limit value of the echo time of the ultrasound reflected at the liquid surface 105 can be determined from the effective height, and from the lower limit value of the echo time, it is determined whether sufficient liquid alkali metal is present in the cavity 601 to be measured. By using the method, more interference signals can be eliminated, and a detection result can be obtained rapidly.
In some embodiments, the detection device concentrates the ultrasound transmitting portion 30 and the ultrasound receiving portion 40 on one probe.
In some embodiments, the detection device may further include a housing 15, where the housing 15 is disposed on the second end cap 12 to house the ultrasound transmitting portion 30 and the ultrasound receiving portion 40.
In some embodiments, the inner wall of the first end cap 11 and the inner wall of the second end cap 12 are planes parallel to each other so that echoes are received by the ultrasound receiving part 40.
In some embodiments, the cavity 601 to be tested is a cavity of the conduit 70. At this time, the detecting means is used to detect whether the alkali metal 100 is present in the pipe 70. The probe is open at both axial ends and is connected as a pipe section in the pipe 70.
Referring to fig. 2, the receiving chamber 14 is provided as part of a conduit 70 through which liquid alkali metal 100 may flow from the receiving chamber 14. By detecting the receiving chamber 14, it can be determined whether the alkali metal 100 is present in the pipe 70.
In some embodiments, the cross-section of the housing 10 may be an isosceles trapezoid, wherein the second end cap 12 has a size larger than the first end cap 11, and the ultrasound emitting portion 30 and the ultrasound receiving portion 40 are located at a lower side of the isosceles trapezoid. In such an embodiment, the isosceles trapezoid shape facilitates adapting the cross section of the housing 10 to a small-sized conduit cross section, while also facilitating receipt of echoes reflected from the liquid surface 105 by the ultrasound receiver 40. Moreover, the waist trapezium is also beneficial to rapidly eliminating interference signals.
Referring to fig. 3, in some embodiments, the cavity 601 to be measured may be a cavity of a container. The detection means may be used to detect the presence or absence of alkali metal 100 in vessel 60. At this time, the accommodating chamber 14 is a sealed chamber, the accommodating chamber 14 is for connection with the container 60, the accommodating chamber 14 is provided with a through hole 61 communicating with the bottom of the container 60, and when the alkali metal 100 exists in the container 60, the alkali metal 100 can flow into the accommodating chamber 14.
The second aspect of the embodiments of the present application further provides an alkali metal detection method for detecting whether an alkali metal exists in the cavity 601 to be detected by using the detection device of any of the embodiments, where the method includes steps S10 to S40.
S10: the housing 10 is heated.
S20: an ultrasonic signal is emitted in the direction of the first end cap 11.
S30: the reflected ultrasonic signal is received.
S40: a plurality of echo times of the ultrasonic signal are determined, and whether an alkali metal exists in the cavity 601 to be measured is determined according to the plurality of echo times.
The alkali metal detection method provided by the embodiment of the application can detect whether the liquid alkali metal 100 exists in the cavity 601 to be detected by utilizing the ultrasonic signal, and is simple to operate and accurate in measurement.
In some embodiments, the step of determining whether an alkali metal is present in the cavity 601 to be measured based on the plurality of echo times comprises: when the echo time within the preset interval exists in the echo times, whether alkali metal exists in the cavity 601 to be tested is determined according to the amplitude.
As mentioned above, the received ultrasonic signal may also include ultrasonic signals reflected by other interfaces, and the amplitude can determine which interface the received ultrasonic signal is reflected by.
In some embodiments, the step of determining whether an alkali metal is present in the cavity 601 to be measured based on the plurality of echo times comprises: the effective height of the alkali metal liquid surface 105 is determined according to the distance between the first end cover 11 and the second end cover 12, the lower limit value of the echo time of the ultrasonic wave reflected at the alkali metal liquid surface is determined according to the effective height, and whether the liquid alkali metal exists in the cavity 601 to be tested is determined according to the lower limit value.
A third aspect of the embodiments of the present application is also an alkali metal detection method for detecting the presence or absence of an alkali metal in a container, the detection method including steps S11 to S51.
S11: the ultrasonic transmitting part and the ultrasonic receiving part are arranged at the bottom of the container.
S21: the vessel is heated so that when alkali metal is present inside the vessel, the alkali metal can liquefy to liquid alkali metal.
S31: an ultrasonic signal is transmitted to the top of the container using an ultrasonic transmitting part.
S41: the reflected ultrasonic signal is received by the ultrasonic receiving part.
S51: a plurality of echo times of the ultrasonic signal are determined and based on the plurality of echo times, whether an alkali metal is present within the container is determined.
During actual use, the container may be inconvenient to install the alkali metal detecting device provided by the embodiments of the present application, or the container may be inconvenient to open. In this case, the container can be directly detected after heating the container, without the need for containing alkali metal by means of the containing chamber. When measured using this method, the echo time t resulting from the reflection at the bottom wall of the container can be determined 2 。
In step S21, the container is heated at a temperature generally not exceeding 200 ℃, which is to prevent the ultrasonic transmitting portion and the ultrasonic receiving portion from being affected by high temperature.
It should also be noted that, in the embodiments of the present application, the features of the embodiments and the embodiments of the present application may be combined with each other to obtain new embodiments without conflict.
The above is only a specific embodiment of the present application, but the scope of the present application should not be limited thereto, and the scope of the present application should be determined by the scope of the claims.
Claims (11)
1. An alkali metal detection device for detecting the presence or absence of alkali metal in a cavity, the device comprising:
the device comprises a shell, a first cover, a second cover and a first cover, wherein the shell comprises a first end cover, a second end cover and a side wall, the first end cover, the second end cover and the side wall are opposite, the side wall is connected between the first end cover and the second end cover, the first end cover, the second end cover and the side wall define a containing cavity, the containing cavity is used for being communicated with a cavity to be tested, and when alkali metal exists in the cavity to be tested, the alkali metal can flow into the containing cavity;
a heating element for heating the housing so that the alkali metal in the accommodating chamber is in a liquid state;
the ultrasonic transmitting part is arranged on the second end cover of the shell and is used for transmitting ultrasonic signals to the direction of the first end cover;
the ultrasonic receiving part is arranged on the second end cover of the shell and is used for receiving the reflected ultrasonic signals; and
and the processing part is configured to determine a plurality of echo times of the ultrasonic signal and determine whether alkali metal exists in the cavity to be tested according to the echo times.
2. The apparatus according to claim 1, wherein the processing section is configured to determine whether an alkali metal is present in the cavity to be measured according to an amplitude when there is an echo time within a preset interval among the plurality of echo times.
3. The apparatus of claim 1, further comprising:
and the housing is arranged on the second end cover so as to cover the ultrasonic transmitting part and the ultrasonic receiving part.
4. The device of claim 1, wherein the inner wall of the first end cap and the inner wall of the second end cap are planar surfaces that are parallel to each other.
5. The device according to claim 1, wherein the cavity to be measured is a cavity of a pipeline,
the device is open at both axial ends and is connected as a tube section in the pipe.
6. The device of claim 5, wherein the housing is isosceles trapezoid in cross-section, and the second end cap has a size that is larger than the size of the first end cap.
7. The device according to claim 1, wherein the cavity to be measured is a cavity of a container,
the accommodating cavity is a sealing cavity and is connected with the container, a through hole communicated with the bottom of the container is formed in the accommodating cavity, and when alkali metal exists in the container, the alkali metal can flow into the accommodating cavity.
8. An alkali metal detection method for detecting the presence or absence of alkali metal in a cavity to be measured using the apparatus of any one of claims 1 to 7, the method comprising:
heating the shell;
transmitting an ultrasonic signal in the direction of the first end cap;
receiving the reflected ultrasonic signals;
and determining a plurality of echo times of the ultrasonic signal, and determining whether alkali metal exists in the cavity to be tested according to the echo times.
9. The method of claim 8, wherein the determining whether alkali metal is present in the cavity to be measured from the plurality of echo times comprises:
and when the echo time within the preset interval exists in the echo times, determining whether alkali metal exists in the cavity to be detected according to the amplitude.
10. The method of claim 8, wherein the determining whether alkali metal is present in the cavity to be measured from the plurality of echo times comprises:
and determining the effective height of the alkali metal liquid level according to the distance between the first end cover and the second end cover, determining the lower limit value of the echo time of the ultrasonic wave reflected at the alkali metal liquid level according to the effective height, and determining whether liquid alkali metal exists in the cavity to be detected according to the lower limit value.
11. An alkali metal detection method for detecting the presence or absence of alkali metal in a container, the method comprising:
an ultrasonic transmitting part and an ultrasonic receiving part are arranged at the bottom of the container;
heating the vessel so that when an alkali metal is present inside the vessel, the alkali metal can liquefy to a liquid alkali metal;
transmitting an ultrasonic signal to the top of the container by using an ultrasonic transmitting part;
receiving the reflected ultrasonic signal by an ultrasonic receiving part;
a plurality of echo times of the ultrasonic signal are determined and based on the plurality of echo times, whether an alkali metal is present within the vessel is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311815615.5A CN117741668A (en) | 2023-12-26 | 2023-12-26 | Alkali metal detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311815615.5A CN117741668A (en) | 2023-12-26 | 2023-12-26 | Alkali metal detection device and detection method |
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| Publication Number | Publication Date |
|---|---|
| CN117741668A true CN117741668A (en) | 2024-03-22 |
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| CN202311815615.5A Pending CN117741668A (en) | 2023-12-26 | 2023-12-26 | Alkali metal detection device and detection method |
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| Country | Link |
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| CN (1) | CN117741668A (en) |
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