Search

CN-115683477-B - Leakage detection alarm device

CN115683477BCN 115683477 BCN115683477 BCN 115683477BCN-115683477-B

Abstract

The application provides a leakage detection alarm device which comprises a sample injection head, a film component, a leakage pipe and a pressure transmitter. The sample injection head is provided with an input channel, an output channel and a sample injection port, the film component is provided with a sample film and a protective film, and the sample film is exposed at one side of the sample injection port. The membrane component forms a sealed cavity between the sample membrane and the protective membrane and a groove communicated with the cavity, and the groove is communicated with the leakage channel. The leakage pipe is installed in one side of sampling head, and leakage pipe one end communicates with leakage channel, and the other end is connected with pressure transmitter. When the sample film of the film component is damaged, the liquid sample can flow into the leakage channel through the sample film, the pressure transmitter receives the signal and outputs an alarm signal to remind a user that the sample film is damaged, and the film component needs to be replaced in time.

Inventors

  • LI BOLUN
  • TAN ZHIYONG
  • JIA SHAOPENG
  • LIU XIAOJING

Assignees

  • 北京安科慧生科技有限公司

Dates

Publication Date
20260508
Application Date
20210722

Claims (8)

  1. 1. The utility model provides a weeping detects alarm device which characterized in that, it includes: The sample injection head (1) is provided with an input channel (11), an output channel (12) and a sample injection port (13), wherein the sample injection port (13) is positioned at the junction of the input channel (11) and the output channel (12), a liquid sample flows into the sample injection port from the input channel in a flow maintaining manner and flows out of the sample injection head from the output channel, and the sample injection head (1) is also provided with a leakage channel (14) which is arranged at a distance from the input channel (11) and the output channel (12); The thin film assembly (5) is provided with a sample film (51) and a protective film (52) which are arranged at intervals, the sample film (51) is exposed to one side of the sample inlet (13), the sample film (51) and the protective film (52) are waterproof films, a sealed cavity (53) and a groove (54) communicated with the cavity (53) are formed between the sample film (51) and the protective film (52) by the thin film assembly (5), and the groove (54) is communicated with the leakage channel (14); the sealing ring (6) is clamped between the sample injection head (1) and the film assembly (5), and the sealing ring (6) is provided with a through hole (61) corresponding to the sample injection port (13) and an avoidance hole (62) corresponding to the leakage channel (14); an analyzer (4), wherein the liquid sample is irradiated by X-rays of the analyzer (4) through the protective film (52) and the sample film (51); a leakage pipe (2) is arranged at one side of the sample introduction head (1), and one end of the leakage pipe (2) is communicated with the leakage channel (14); And a pressure transmitter (3) connected to the other end of the leakage pipe (2); When the sample film (51) is damaged, the liquid sample enters the cavity (53) through the sample film (51) and passes through the groove (54) to flow into the leakage channel (14) through the avoidance hole (62), the pressure in the leakage channel (14) is changed, and the pressure transmitter (3) receives a signal and outputs an alarm signal.
  2. 2. The leakage detection alarm device according to claim 1, wherein the film assembly (5) comprises an outer ring (55), an inner ring (56) and a middle ring (57), the outer ring (55) is provided with a containing cavity (551), the inner ring (56) is placed in the containing cavity (551), the middle ring (57) is placed in the containing cavity (551) in a mode of encircling the inner ring (56), the sample film (51) and the protective film (52) are respectively coated on the top surface and the bottom surface of the inner ring (56), and the sample film (51), the protective film (52) and the inner ring (56) jointly form the cavity (53).
  3. 3. The leakage detection alarm device according to claim 2, wherein the inner ring (56) is provided with a first top wall (561) and a first side wall (562) extending downward from the first top wall (561), the middle ring (57) is provided with a second top wall (571) and a second side wall (572) extending downward from the second top wall (571), the second top wall (571) is pressed 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. 4. The leakage detection alarm device according to claim 3, wherein the outer ring (55) is provided with a stepped hole (553) at the bottom, the stepped hole (553) is provided with a stepped surface (554) and an inner wall surface (555), the inner ring (56) is provided with a boss (563) at the bottom, and the boss (563) is pressed against the stepped surface (554) and clamps the edge of the protective film (52) with the inner wall surface (555).
  5. 5. The leakage detection alarm device according to claim 3, wherein the groove (54) is formed between the second side wall (572) of the middle ring (57) and the outer ring (55), and the first side wall (562) is provided with a plurality of through grooves (564) communicating the groove (54) with the cavity (53).
  6. 6. The leakage detection alarm device according to claim 3, wherein the housing chamber (551) is provided with a bottom wall (552), and the groove (54) includes a first gap (541) formed between a 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 an inner side wall surface of the housing chamber (551).
  7. 7. The leakage detection alarm device according to claim 1, wherein the sample introduction head (1) is further provided with a leakage joint (15), and the leakage joint (15) is communicated with the leakage channel (14) and the leakage pipe (2).
  8. 8. The leakage detection alarm device according to claim 1, wherein the sample introduction head (1) is further provided with a heating joint (16) for connecting with a heating device.

Description

Leakage detection alarm device Technical Field The application relates to a leakage detection alarm device. Background Fluid leakage is inevitably generated in the process of testing the fluid by the on-line detection instrument, and an alarm signal can be timely sent out once leakage occurs, so that an error result and further loss of the instrument are avoided. Current methods of fluid leak detection use sensors for detection. The fluid to be detected flows in a specific closed space, and flows through a fixed detection position of the instrument in the flowing process, and the sensor is in direct contact with the fluid for detection. However, this method is not suitable for the X-ray fluorescence analyzer because the detection position is the place where leakage is most likely to occur, and the detection position is narrow in space, and the existing sensor cannot be simply and directly installed at the detection position of the instrument for not affecting the performance of the X-ray fluorescence analyzer. Therefore, improvements to existing leak detection alarm devices are needed. Disclosure of Invention The application provides a liquid leakage detection alarm device which can alarm in time when a liquid sample leaks due to the breakage of a sample film of a film assembly. The leakage detection alarm device comprises a sample introduction head, a thin film component and a pressure transmitter, wherein the sample introduction head is provided with an input channel, an output channel and a sample introduction port, the sample introduction port is positioned at the junction of the input channel and the output channel, the sample introduction head is also provided with a leakage channel which is arranged at a distance from the input channel and the output channel, the thin film component is provided with a sample film and a protective film which are arranged at a distance from each other, the sample film is exposed at one side of the sample introduction port, the thin film component forms a sealed cavity between the sample film and the protective film and a groove communicated with the cavity, the groove is communicated with the leakage channel, the leakage pipe is arranged at one side of the sample introduction head, one end of the leakage pipe is communicated with the leakage channel, and the pressure transmitter is connected with the other end of the leakage pipe. When the sample film of the thin film component is damaged, the liquid sample passes through the sample film, enters the cavity, flows into the leakage channel through the groove, the pressure transmitter receives the signal of pressure change of the leakage channel, outputs an alarm signal, and can remind a user that the thin film component is damaged and needs to be replaced in time. According to one embodiment of the application, the leakage detection alarm device is further provided with a sealing ring, the sealing ring is clamped between the sample injection head and the film component, and the sealing ring is provided with a through hole corresponding to the sample injection port and an avoidance hole corresponding to the leakage channel. The sealing ring prevents liquid leakage at the gap between the sample injection head and the film component. According to one embodiment of the application, the membrane assembly comprises an outer ring, an inner ring and a middle ring, wherein the outer ring is provided with a containing cavity, the inner ring is placed in the containing cavity, the middle ring is placed in the containing cavity in a mode of encircling the inner ring, the sample membrane and the protective membrane are respectively coated on the top surface and the bottom surface of the inner ring, and the sample membrane, the protective membrane and the inner ring jointly form the cavity. The cavity is surrounded by the sample film and the protective film, so that the structure is simple and the manufacturing is convenient. According to one embodiment of the application, the inner ring is provided with a first top wall and a first side wall extending downwards from the first top wall, the middle ring is provided with a second top wall and a second side wall extending downwards from the second top wall, the second top wall is pressed against the first top wall, and the second side wall and the first side wall clamp the edge of the sample membrane. According to one embodiment of the application, the bottom of the outer ring is provided with a step hole, the step hole is provided with a step surface and an inner wall surface, the bottom of the inner ring is provided with a boss, and the boss is propped against the step surface and clamps the edge of the protective film with the inner wall surface. According to one embodiment of the application, the groove is formed between the second side wall of the middle ring and the outer ring, the first side wall is provided with a plurality of through grooves which are communicated with the groov