A leakage detection alarm device

Abstract

The application provides a liquid leakage detection alarm device, which comprises a sample inlet head, a film assembly, a leakage pipe and a pressure transmitter. The sample inlet head is provided with an input channel, an output channel and a sample inlet; the film assembly is provided with a sample film and a protective film, and the sample film is exposed on one side of the sample inlet. The film assembly forms a sealed cavity between the sample film and the protective film and a groove in communication with the cavity, and the groove is in communication with the leakage channel. The leakage pipe is installed on one side of the sample inlet head, one end of the leakage pipe is in communication with the leakage channel, and the other end is connected with the pressure transmitter. When the sample film of the film assembly is damaged, the liquid sample will flow into the leakage channel through the sample film, the pressure transmitter receives the signal and outputs an alarm signal, reminding the user that the sample film has been damaged and the film assembly needs to be replaced in time.

Description

Technical Field

[0001] This application relates to a leakage detection alarm device. Background Technology

[0002] Fluid leaks are inevitable during online fluid testing. In the event of a leak, an alarm signal must be issued promptly to prevent erroneous results and further damage. Current fluid leak detection methods primarily utilize sensor detection. The fluid being tested flows within a specific enclosed space, passing a fixed detection position on the instrument, where the sensor directly contacts the fluid for detection. However, this method is not well-suited for X-ray fluorescence analyzers because the detection position is precisely where leaks are most likely to occur, and the space at this position is confined. To avoid affecting the performance of the X-ray fluorescence analyzer, existing sensors cannot simply be directly installed at the instrument's detection position.

[0003] Therefore, existing leak detection and alarm devices need to be improved. Summary of the Invention

[0004] This application provides a leakage detection alarm device that can promptly issue an alarm when a liquid sample leaks due to damage to the sample membrane of a thin-film assembly.

[0005] Specifically, this application is achieved through the following technical solution: a leakage detection alarm device, comprising: a sample inlet head, having an input channel, an output channel, and a sample inlet, the sample inlet being located at the intersection of the input channel and the output channel; the sample inlet head also having a leakage channel separated from the input channel and the output channel; a thin film assembly, having a sample film and a protective film spaced apart, the sample film being exposed on one side of the sample inlet; the thin film assembly forming a sealed cavity and a groove communicating with the cavity between the sample film and the protective film, the groove communicating with the leakage channel; a leakage tube installed on one side of the sample inlet head, one end of the leakage tube communicating with the leakage channel; and a pressure transmitter connected to the other end of the leakage tube. When the sample film of the thin film assembly is damaged, the liquid sample passes through the sample film, enters the cavity, flows through the groove, and flows into the leakage channel. The pressure transmitter receives the pressure change signal of the leakage channel and outputs an alarm signal, which can remind the user that the thin film assembly has been damaged and needs to be replaced in time.

[0006] According to one embodiment of this application, the leakage detection alarm device further includes a sealing ring, which is sandwiched between the injection head and the thin film assembly. The sealing ring has a through hole corresponding to the injection port and a clearance hole corresponding to the leakage channel. The sealing ring prevents leakage from occurring at the gap between the injection head and the thin film assembly.

[0007] According to one embodiment of this application, the thin film assembly includes an outer ring, an inner ring, and a middle ring. The outer ring has a receiving cavity, the inner ring is placed in the receiving cavity, and the middle ring is placed in the receiving cavity surrounding the inner ring. The sample film and the protective film respectively cover the top and bottom surfaces of the inner ring, and the sample film, the protective film, and the inner ring together form the cavity. The cavity is formed by the sample film and the protective film, resulting in a simple structure that is easy to manufacture.

[0008] According to one embodiment of this application, the inner ring is provided with a first top wall and a first side wall extending downward from the first top wall, the middle ring is provided with a second top wall and a second side wall extending downward from the second top wall, the second top wall abuts against the first top wall, and the second side wall and the first side wall clamp the edge of the sample membrane.

[0009] According to one embodiment of this application, the outer ring has a stepped hole at its bottom, the stepped hole having a stepped surface and an inner wall surface; the inner ring has a boss at its bottom, the boss pressing against the stepped surface and clamping the edge of the protective film with the inner wall surface.

[0010] According to one embodiment of this application, the groove is formed between the second sidewall of the middle ring and the outer ring, and the first sidewall is provided with a plurality of through grooves connecting the groove and the cavity, and the cavity can be connected to a leakage channel through the through grooves.

[0011] According to one embodiment of this application, the receiving cavity has a bottom wall, and the groove includes a first gap formed between the bottom surface of the second side wall and the bottom wall, and a second gap formed between the second side wall and the inner side wall surface of the receiving cavity. The groove is formed using the assembly gap between the middle ring and the outer ring, which simplifies the structure of the thin film assembly.

[0012] According to one embodiment of this application, the injection head is further provided with a leakage connector, the leakage connector connecting the leakage channel and the leakage tube.

[0013] According to one embodiment of this application, the injection head is further provided with a heating connector for connecting a heating device.

[0014] According to one embodiment of this application, the leakage detection alarm device further includes an analyzer that provides X-rays that penetrate the protective membrane and the sample membrane.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] Figure 1This is a perspective view of a leak detection alarm device and analyzer according to one embodiment of this application.

[0017] Figure 2 A three-dimensional composite diagram showing a partial cross-section of a leak detection alarm device.

[0018] Figure 3 for Figure 2 Longitudinal cross-sectional view of the leakage detection alarm device in the middle.

[0019] Figure 4 for Figure 2 A partial cross-sectional top view of the leakage detection alarm device in the middle.

[0020] Figure 5 for Figure 4 Enlarged view of the circled area.

[0021] Figure 6 This is a cross-sectional view of the thin-film assembly of the leak detection alarm device.

[0022] Figure 7 This is a cross-sectional view of the outer ring of the thin-film module.

[0023] Figure 8 This is a cross-sectional perspective view of the outer ring of the thin-film module.

[0024] Explanation of reference numerals in the attached figures:

[0025] Sample inlet 1, input channel 11, output channel 12, sample inlet 13, leakage channel 14, leakage connector 15, heating connector 16, pressure transmitter 3, leakage tube 2, analyzer 4, thin film assembly 5, sample membrane 51, protective membrane 52, cavity 53, groove 54, first gap 541, second gap 542, outer ring 55, receiving cavity 551, bottom wall 552, stepped hole 553, stepped surface 554, inner wall surface 555, inner ring 56, first top wall 561, first side wall 562, boss 563, through groove 564, middle ring 57, second top wall 571, second side wall 572, sealing ring 6, through hole 61, clearance hole 62. Detailed Implementation

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses, systems, devices, and methods consistent with some aspects of this application.

[0027] refer to Figure 1As shown, this application relates to a leak detection alarm device suitable for use in detecting fluid composition. The leak detection alarm device includes a sample inlet 1, a leak tube 2, a pressure transmitter 3, and an analyzer 4. One end of the leak tube 2 is connected to the side of the sample inlet 1, and the pressure transmitter 3 is located at the other end of the leak tube 2 to detect pressure changes within the leak tube 2. The sample inlet 1 is fixed to the front of the analyzer 4 by screws. In this embodiment, the analyzer 4 is an X-ray fluorescence analyzer. The leak detection alarm device also includes a thin-film assembly 5, which is mounted on the rear side of the sample inlet 1 near the analyzer 4 by screws.

[0028] Figures 2 to 5 All images show the assembly of the injection head 1 and the thin film module 5. Figure 2 This is a partial sectional 3D view. Figure 3 This is a longitudinal cross-sectional view. Figure 4 This is a top view showing a partial section. Figure 5 for Figure 4 A partial enlarged view. The injection head 1 has an input channel 11 located on the upper side and an output channel 12 located on the lower side. An inlet 13 is located at the intersection of the input channel 11 and the output channel 12. The liquid sample flows into the inlet 13 through the input channel 11 and then flows out of the injection head 1 through the output channel 12 in a continuously flowing manner.

[0029] The thin-film assembly 5 includes a sample membrane 51, which is exposed behind the inlet 13. The sample membrane 51 is a water-impermeable membrane but allows X-rays to pass through it. When the liquid sample passes through the inlet 13, it flows over the surface of the sample membrane 51. The thin-film assembly 5 also includes a protective membrane 52 located behind the sample membrane 51. The protective membrane 52 is also a water-impermeable membrane but allows X-rays to pass through. The function of the protective membrane 52 is to seal the liquid sample in the event of damage to the sample membrane 51, preventing the liquid sample from flowing out of the thin-film assembly 5 and contaminating the detector head (not shown) of the analyzer 4.

[0030] The X-rays from the analyzer 4 pass through the protective membrane 52 and sample membrane 51 of the thin-film assembly 5 to irradiate the liquid sample, detecting the composition and content of the liquid sample. A sealing ring 6 is sandwiched between the injection head 1 and the thin-film assembly 5 to prevent leakage at the gap between them. The sealing ring 6 has a through hole 61 corresponding to the injection port 13, which does not affect the contact between the liquid sample and the sample membrane 51.

[0031] The injection head 1 has a leakage channel 14 inside, which extends approximately horizontally and then penetrates the injection head 1. A leakage connector 15, communicating with the leakage channel 14, is provided at the penetration point of the injection head 1. The leakage channel 14 is separated from both the input channel 11 and the output channel 12. The leakage connector 15 connects the leakage pipe 2 and the leakage channel 14. The sealing ring 6 forms a through clearance hole 62 corresponding to the end of the leakage channel 14 (see reference). Figure 5The thin film assembly 5 forms a sealed cavity 53 and a groove 54 communicating with the cavity 53 between the sample film 51 and the protective film 52. The leakage channel 14 communicates with the cavity 53 through the clearance hole 62 of the sealing ring 6 and the groove 54.

[0032] During normal use, the sample membrane 51 of the membrane assembly 5 prevents sample liquid from entering the cavity 53, and no liquid sample enters the leakage channel 14. The pressure remains constant, and the pressure transmitter 3 has no signal output. When the sample membrane 51 is damaged, the liquid sample passes through the sample membrane 51 into the cavity 53, passes through the groove 54 and the clearance hole 62, and flows into the leakage channel 14. The pressure in the leakage channel 14 changes, and the pressure transmitter 3 receives the signal and outputs an alarm signal to remind the user that the membrane assembly 5 has been damaged and needs to be replaced in time. In this embodiment, the liquid sample is paraffin liquid, and a heating connector 16 is also installed on one side of the injection head 1 for connecting a heating device (not shown) to keep the paraffin in the injection head 1 flowing.

[0033] The following will combine Figures 6 to 8 The thin film assembly 5 is described in detail. For ease of observation and description, the thin film assembly 5 is placed with the sample film 51 facing upwards in the figure.

[0034] The thin film assembly 5 includes an outer ring 55, an inner ring 56 and a middle ring 57. The outer ring 55 is an annular hollow structure with a receiving cavity 551. The inner ring 56 is placed in the receiving cavity 551, and the middle ring 57 is placed in the receiving cavity 551 in a manner that surrounds the inner ring 56.

[0035] The inner ring 56 has a first top wall 561 and a first side wall 562 extending downward from the first top wall 561. A boss 563 is provided along the inner edge of the bottom of the first side wall 562. The receiving cavity 551 of the outer ring 55 has a bottom wall 552 and a ring of stepped holes 553 recessed downward from the bottom wall 552. The stepped holes 553 have a stepped surface 554 and an inner wall surface 555. The inner ring 56 is assembled into the outer ring 55. First, a protective film 53 is laid on the bottom surface of the inner ring 56. Then, the inner ring 56 is placed inside the outer ring 55. The bottom surface of the boss 563 presses against the stepped surface 554. The outer surface of the boss 563 and the inner wall surface 555 of the stepped hole 553 clamp the edge of the protective film 52, thus fixing the inner ring 56 and the protective film 52 inside the outer ring 55. The protective film 52 forms a sealing surface, preventing liquid samples from flowing out of the membrane assembly 5.

[0036] The middle ring 57 includes a second top wall 571 and a second side wall 572 extending downward from the second top wall 571. When the middle ring 57 is assembled into the outer ring 55, the sample membrane 51 is first laid on the top surface of the first top wall 561. The second top wall 571 presses against the first top wall 561 of the inner ring 56. The second side wall 572 covers the outside of the first side wall 562 of the inner ring 56 and clamps the edge of the sample membrane 51 with the first side wall 562 to fix the middle ring 57 and the sample membrane 51 onto the inner ring 56. Then, the sample membrane 51, the protective membrane 52, the outer ring 55, the inner ring 56, and the middle ring 57 are assembled into a thin film assembly 5. The first top wall 561 has an opening (unlabeled) corresponding to the sample inlet 13 to expose the sample membrane 51, so that the liquid sample can contact the sample membrane 51. The second top wall 572 has another opening (unlabeled) to allow X-rays to pass through and irradiate the sample membrane 51.

[0037] The sample membrane 51 and the protective membrane 52 respectively cover the top and bottom surfaces of the inner ring 56, forming the aforementioned sealed cavity 53 together with the inner ring 56. The structure is simple and easy to manufacture. Figure 8 As shown, the first sidewall 562 of the inner ring 56 is provided with several transversely extending through grooves 564, and the through grooves 564 also penetrate downward through the first sidewall 562. A first gap 541 is provided between the bottom surface of the second sidewall 572 of the middle ring 57 and the bottom wall 552 of the outer ring 55, and a second gap 542 is provided between the outer surface of the second sidewall 572 and the inner wall of the receiving cavity 551. The first gap 541 and the second gap 542 together form the aforementioned groove 54, that is, a groove 54 is formed between the middle ring 57 and the outer ring 55. The through grooves 564 connect the cavity 53 and the groove 54. The groove 54 is formed using the assembly gap between the middle ring 57 and the outer ring 55, which simplifies the structure of the thin film assembly 5.

[0038] Combination Figure 5 As shown, the groove 54 connects the cavity 53 with the leakage channel 14. When the sample membrane 51 is damaged, the liquid sample enters the cavity 53 and connects with the leakage channel 14 through the through groove 564, the first gap 541, the second gap 542 and the clearance hole 62, causing the pressure in the leakage channel 14 to change. The pressure transmitter 3 receives the signal and outputs an alarm signal.

[0039] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0040] The terms used in this document, such as "up," "down," "left," "right," "front," "back," "thickness," "radial," and "axial," to describe spatial relative positions are for illustrative purposes and to describe the relationship of one feature relative to another, as shown in the accompanying drawings, and are not limited to a single location or spatial orientation. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures and should not be construed as limiting. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity; a certain angle of inclination is permissible.

[0041] The word "includes" or similar terms means that the elements or objects preceding "includes" cover the elements or objects listed after "includes" or "includes" and their equivalents, but do not exclude other elements or objects.

[0042] It should be noted that when a component is referred to as being "fixed to..." another component, it can be directly on the surface of the other component or at a distance from the surface of the other component. The terms "mounted," "connected," "linked," and "fixed" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the components; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components, unless otherwise explicitly defined.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be understood that the terms "first," "second," and similar terms used in this application specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. "Multiple" or "multi-layered" indicates two or more quantities.

[0045] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A leakage detection and alarm device, characterized in that, It includes: The injection head (1) is provided with an input channel (11), an output channel (12) and an injection port (13). The injection port (13) is located at the intersection of the input channel (11) and the output channel (12). The liquid sample flows into the injection port from the input channel and then flows out of the injection head from the output channel in a flowing manner. The injection head (1) is also provided with a leakage channel (14) that is separated from the input channel (11) and the output channel (12). The thin film assembly (5) is provided with a sample membrane (51) and a protective membrane (52) spaced apart. The sample membrane (51) is exposed on one side of the sample inlet (13). Both the sample membrane (51) and the protective membrane (52) are waterproof membranes. The thin film assembly (5) forms a sealed cavity (53) and a groove (54) communicating with the cavity (53) between the sample membrane (51) and the protective membrane (52). The groove (54) is communicating with the leakage channel (14). A sealing ring (6) is sandwiched between the injection head (1) and the thin film assembly (5). The sealing ring (6) has a through hole (61) corresponding to the injection port (13) and a clearance hole (62) corresponding to the leakage channel (14). The analyzer (4) emits X-rays that pass through the protective membrane (52) and the sample membrane (51) to irradiate the liquid sample. A leakage tube (2) is installed on one side of the injection head (1), and one end of the leakage tube (2) is connected to the leakage channel (14); and pressure transmitter (3), which is connected to the other end of the leakage pipe (2); During normal use, the sample membrane (51) of the thin film assembly (5) prevents the sample liquid from entering the cavity (53), and the pressure remains constant in the leakage channel (14) as no liquid sample enters. The pressure transmitter (3) has no signal output. When the sample membrane (51) is damaged, the liquid sample passes through the sample membrane (51) into the cavity (53), passes through the groove (54), passes through the clearance hole (62), and flows into the leakage channel (14). The pressure in the leakage channel (14) changes, and the pressure transmitter (3) receives the signal and outputs an alarm signal.

2. The leakage detection and alarm device according to claim 1, characterized in that: The thin film assembly (5) includes an outer ring (55), an inner ring (56), and a middle ring (57). The outer ring (55) has a receiving cavity (551). The inner ring (56) is placed in the receiving cavity (551). The middle ring (57) is placed in the receiving cavity (551) in a manner that surrounds the inner ring (56). The sample film (51) and the protective film (52) respectively cover the top and bottom surfaces of the inner ring (56). The sample film (51), the protective film (52), and the inner ring (56) together form the cavity (53).

3. The leakage detection and alarm device according to claim 2, characterized in that: The inner ring (56) has a first top wall (561) and a first side wall (562) extending downward from the first top wall (561). The middle ring (57) has a second top wall (571) and a second side wall (572) extending downward from the second top wall (571). The second top wall (571) presses against the first top wall (561), and the second side wall (572) and the first side wall (562) clamp the edge of the sample membrane (51).

4. The leakage detection and alarm device according to claim 3, characterized in that: The outer ring (55) has a stepped hole (553) at the bottom, the stepped hole (553) has a stepped surface (554) and an inner wall surface (555); the inner ring (56) has a boss (563) at the bottom, the boss (563) abuts against the stepped surface (554) and clamps the edge of the protective film (52) with the inner wall surface (555).

5. The leakage detection and alarm device according to claim 3, characterized in that: The groove (54) is formed between the second sidewall (572) of the middle ring (57) and the outer ring (55), and the first sidewall (562) is provided with a plurality of through grooves (564) connecting the groove (54) and the cavity (53).

6. The leakage detection and alarm device according to claim 3, characterized in that: The receiving cavity (551) is provided with a bottom wall (552), and the groove (54) includes a first gap (541) formed between the bottom surface of the second side wall (572) and the bottom wall (552), and a second gap (542) formed between the second side wall (572) and the inner side wall surface of the receiving cavity (551).

7. The leakage detection and alarm device according to claim 1, characterized in that: The injection head (1) is also provided with a leakage connector (15), which connects the leakage channel (14) and the leakage tube (2).

8. The leakage detection and alarm device according to claim 1, characterized in that: The injection head (1) is also provided with a heating connector (16) for connecting to the heating device.

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