Pretreatment system for measuring hydrogen content in water

Abstract

The utility model relates to the technical field of hydrogen content measurement in water, and solves the problems that a probe is easy to damage and the service life of an instrument is seriously shortened because airflow at the top of a circulating water cooling tower contains a large amount of water vapor. The utility model particularly relates to a pretreatment system for measuring the hydrogen content in water. A pretreatment system for measuring the hydrogen content in water comprises a sampling module for treating a sample for detection in the first stage of the pretreatment system, a water removal module arranged at the rear end of the sampling module and used for receiving the treated sample and providing a drying medium for a subsequent treatment module, and a detection module arranged at the rear end of the sampling module and used for detecting the hydrogen content in the water. The water removal module is a final stage of the pretreatment system and is used for receiving the drying medium and providing detection data, the water removal module comprises a gas catcher for containing a clean water sample, a medium overflow track of the gas catcher is communicated with a condensation dehydrator, and the drying medium output from the condensation dehydrator is output to the detection module through a sampling pump.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen content measurement in water, in particular to a pretreatment system for measuring the hydrogen content in water. Background Art

[0002] At present, the method of installing a diffusion-type hydrogen alarm on the top of the cooling tower of the circulating water plant is mostly used to measure the hydrogen content in the water. After the circulating water enters the cooling tower, it is sprayed on the glass fiber filler in a spray manner, and the purpose of heat exchange is achieved through the contact between water and air. Then, the fan drives the air flow in the tower to circulate, and the hot air flow after heat exchange with water is taken out to achieve cooling. In this process, the air flow at the top of the circulating water cooling tower will contain a large amount of water vapor, which is easy to cause damage to the probe and seriously shorten the service life of the instrument. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a pretreatment system for measuring the hydrogen content in water, which solves the problem that the top airflow of the circulating water cooling tower contains a large amount of water vapor, which easily causes damage to the probe and seriously shortens the service life of the instrument.

[0004] To achieve the above object, the utility model provides the following technical solution: a pretreatment system for measuring hydrogen content in water, comprising:

[0005] The sampling module is the first stage of the pre-processing system and is used to process the sample for testing;

[0006] A water removal module, which is arranged at the rear end of the sampling module to receive the processed samples and provide a drying medium to the subsequent processing module;

[0007] The detection module is the final stage of the pretreatment system, which is used to receive the drying medium and provide detection data;

[0008] The dehydration module includes a gas trap for holding clean water samples. The medium overflow track of the gas trap is connected to the condensation dehydrator. The dry medium output from the condensation dehydrator is output to the detection module through a sampling pump.

[0009] In one embodiment, the sampling module includes a sampling probe for continuously extracting water samples from the process pipeline, and a self-cleaning filter for providing clean water samples to the water removal module is provided at the rear end of the sampling probe in communication with the sampling probe;

[0010] The sampling probe includes a probe and a sampling ball valve connected to the probe for establishing or releasing a sample inflow channel;

[0011] The self-cleaning filter includes a filter body and a metal filter installed in the filter body. The metal filter is installed symmetrically and horizontally in the upper and lower parts. The filter body is provided with an inlet for providing sample inflow and an outlet for impurities to flow out after filtration. An overflow port is provided at the upper end of the metal filter between the inlet and the outlet for overflowing clean water samples to the water removal module.

[0012] In one embodiment, the gas capture device includes an outer shell and a water inlet opened on the outer shell, the water inlet is connected to a pipe extending longitudinally inward, a liquid spray hole is provided on the side wall of the pipe to spray clean water samples into the outer shell, a clear water barrier tube is provided on the opposite side of the outer shell from the pipe, a plurality of glass beads are provided inside the clear water barrier tube for preventing clear water from entering the rear pipeline, and an air outlet is provided at the upper end of the clear water barrier tube for transmitting humid medium outward.

[0013] In one embodiment, the condensate dehumidifier includes a shell having a medium inlet, a coil connected to the medium inlet is arranged inside the shell for guiding the flow of the medium inlet, and a liquid outlet is opened on the shell at the coil outlet position for the outflow of condensed water.

[0014] In one embodiment, a vortex cooler is provided on the right side of the shell for blowing cold air into the inner cavity of the shell, and an air outlet is provided on the left end of the shell.

[0015] In one embodiment, the detection module includes a coalescer for medium filtration, and the medium overflowing from the coalescer is adjusted to a suitable flow rate by a flow meter and then sent to a hydrogen analyzer for measurement and detection.

[0016] Compared with the prior art, the utility model provides a pretreatment system for measuring the hydrogen content in water, which has the following beneficial effects:

[0017] The technical solution disclosed by the utility model can effectively remove water vapor in the sample, reduce the sample humidity from 80% to 15%, and effectively extend the service life of the instrument.

[0018] In the technical solution disclosed by the utility model, hydrogen in the water sample can be effectively precipitated and collected, ensuring that the measuring process of the analyzer is not affected by the external environment and the accuracy of the instrument measurement is guaranteed.

[0019] In the technical solution disclosed by the utility model, the installation location can be selected according to the actual environment, and there is no requirement for a specific installation position, so as to achieve the characteristics of easy maintenance and convenient operation in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the sampling module of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the water removal module of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the detection module of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the sampling probe of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the self-cleaning filter of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the gas capture device of the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the condensation water remover of the utility model.

[0029] In the figure: 1. Sampling module; 11. Sampling probe; 111. Probe; 112. Sampling ball valve; 12. Self-cleaning filter; 121. Filter body; 122. Metal filter; 123. Overflow; 2. Water removal module; 21. Gas capture; 211. Shell; 212. Pipeline; 213. Spray hole; 214. Open water barrier tube; 215. Glass beads; 22. Condensation dehydrator; 221. Shell; 222. Coil; 223. Air outlet; 23. Sampling pump; 3. Detection module; 31. Coalescer; 32. Hydrogen analyzer; 4. Process pipeline. DETAILED DESCRIPTION

[0030] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Figure 1-Figure 8 This is an embodiment of the utility model. The specific problem addressed by this specific embodiment is that currently, the hydrogen content in water is measured by installing a diffusion-type hydrogen alarm on the top of the cooling tower of a circulating water plant. After the circulating water enters the cooling tower, the circulating water is sprayed onto the glass fiber filler in a spray manner, and the purpose of heat exchange is achieved through the contact between water and air. Subsequently, a fan drives the air flow in the tower to circulate, and the hot air flow after heat exchange with the water is brought out, thereby achieving cooling. In this process, the air flow at the top of the circulating water cooling tower will contain a large amount of water vapor, which can easily cause damage to the probe and seriously shorten the service life of the instrument. This solution specifically solves the above-mentioned problems through a pretreatment system for measuring the hydrogen content in water.

[0033] A pretreatment system for measuring hydrogen content in water is specifically provided with a sampling module 1 for processing samples for detection in the first stage of the pretreatment system and a dewatering module 2 arranged at the rear end of the sampling module 1 for receiving the processed samples for providing a drying medium to a subsequent processing module. The final stage of the pretreatment system is a detection module 3 for receiving the drying medium and providing detection data. The detection module 3 includes a coalescer 31 for medium filtration. The coalescer is an existing commonly used equipment. In this specific embodiment, a coalescer of model SS-2T, PTFE is used. The medium overflowing from the coalescer 31 is adjusted to a suitable flow rate by a flowmeter and then sent to a hydrogen analyzer 32 for measurement and detection. In this specific embodiment, a hydrogen analyzer of model SNE4100B is used. In specific production and application, the specific selection can be made according to needs and customer requirements.

[0034] like Figure 2 , Figure 5-Figure 6 As shown, the sampling module 1 includes a sampling probe 11 for continuously extracting water samples from the process pipeline 4. The rear end of the sampling probe 11 is connected to a self-cleaning filter 12 for providing clean water samples to the water removal module 2. The sampling probe 11 includes a probe 111 and a sampling ball valve 112 connected to the probe 111 for establishing or releasing the sample inflow channel. The probe 111 is made of a hollow steel pipe made of 316 stainless steel, and its length is the length of a short pipe plus 1 / 3 of the length of the process main pipe. The inserted probe 111 causes water flow disturbance to ensure that the hydrogen dissolved in the water can enter the measurement system.

[0035] The self-cleaning filter 12 includes a filter body 121 and a metal filter 122 installed in the filter body 121. The metal filter 122 is used to filter impurities and particulate matter in the water sample to ensure that the dirt in the water sample will not enter the post-processing. The size of this equipment can be adjusted accordingly according to the actual cleanliness of the water sample on site. The metal filter 122 is symmetrical and installed horizontally. The filter body 121 is provided with an inlet for providing sample inflow and an outlet for impurities to flow out after filtration. When the metal filter 122 needs to be cleaned later, running water is connected from the inlet and discharged from the outlet. In this process, running water continuously flushes the metal filter 122 to achieve the purpose of self-cleaning. An overflow port 123 is provided at the upper end of the metal filter 122 between the inlet and the outlet for overflowing clean water samples to the dewatering module 2. The sample overflowing from the overflow port 123 is filtered by the metal filter 122, thereby becoming a clean water sample without impurities.

[0036] like Figure 3 , Figure 7-Figure 8 As shown, the dehydration module 2 includes a gas capturer 21 for holding clean water samples. The medium overflow track of the gas capturer 21 is connected to the condensation dehydrator 22. The dry medium output from the condensation dehydrator 22 is output to the detection module 3 through a sampling pump 23 of model P1.3.

[0037] like Figure 7 As shown, the gas capture device 21 includes a shell 211 and a water inlet opened on the shell 211, and a pipe 212 extending longitudinally inward is connected to the water inlet. The lower end port of the pipe 212 is sealed, and a liquid spray hole 213 is arranged on the side wall of the pipe 212. The clean water sample entering will be sprayed out from the liquid spray hole 213, and the hydrogen dissolved in the clean water sample will be rapidly precipitated at this time. A clear water barrier tube 214 is arranged on the opposite side of the shell 211 and the pipe 212, and a plurality of glass beads 215 are arranged inside the clear water barrier tube 214 for preventing clear water from entering the rear pipeline. The hydrogen passes through the glass beads 215 inside the clear water barrier tube 214 to reach the top position, and an air outlet is opened at the upper end of the clear water barrier tube 214 to transmit a humid medium outward. The medium described in this scheme is hydrogen, and the water sample after the hydrogen is precipitated is discharged to the collection tank through the lower outlet and returned to the process pipeline 4 through the delivery pump.

[0038] like Figure 8As shown, the condensation dehumidifier 22 includes a shell 221, a medium inlet is provided on the shell 221, a coil 222 connected to the medium inlet is provided in the shell 221 for guiding the flow of the medium inlet, and a channel pipe connected to the three-way connection to transport the medium outward, and a liquid outlet is provided on the shell 221 at the three-way liquid outlet position connected to the coil 222 for the outflow of condensed water, and a vortex refrigerator is provided on the right side of the shell 211 for blowing cold air into the inner cavity of the shell 211, and an air outlet 223 is provided at the left end of the shell 211. The hot air generated after the instrument air enters the vortex refrigerator is discharged from the right outlet, and the generated cold air moves to the left side and enters the inside of the vortex refrigerator to exchange heat with the coil 222, so as to achieve the purpose of cooling the hydrogen, and the cold air after heat exchange is discharged from the left outlet of the condensation dehumidifier 22. At this time, the hydrogen flowing in the coil 222 will condense the water vapor in the hydrogen due to the effect of the cold air outside the coil 222, so as to achieve the purpose of dehydrating and drying the hydrogen.

[0039] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0040] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment system for measuring hydrogen content in water, characterized in that: Said: The sampling module (1) is the first stage of the pre-processing system and is used to process the sample for testing; A water removal module (2) is arranged at the rear end of the sampling module (1) to receive the processed sample and provide a drying medium to a subsequent processing module; The detection module (3) is the final stage of the pretreatment system and is used to receive the drying medium and provide detection data; The dehydration module (2) comprises a gas trap (21) for containing clean water samples, the medium overflow track of the gas trap (21) is connected to a condensation dehydrator (22), and the dry medium output from the condensation dehydrator (22) is output to the detection module (3) through a sampling pump (23).

2. A pretreatment system for measuring hydrogen content in water according to claim 1, characterized in that: The sampling module (1) comprises a sampling probe (11) for continuously extracting water samples from the process pipeline (4); a self-cleaning filter (12) is provided at the rear end of the sampling probe (11) and is connected thereto, and is used to provide clean water samples to the water removal module (2); The sampling probe (11) comprises a probe (111) and a sampling ball valve (112) connected to the probe (111) for establishing or releasing a sample inflow channel; The self-cleaning filter (12) comprises a filter body (121) and a metal filter screen (122) installed in the filter body (121); the metal filter screen (122) is installed symmetrically in a horizontal position, and the filter body (121) is provided with an inlet for providing sample inflow and an outlet for impurities to flow out after filtration; an overflow port (123) for overflowing clean water sample to the dewatering module (2) is provided at the upper end of the metal filter screen (122) between the inlet and the outlet.

3. A pretreatment system for measuring hydrogen content in water according to claim 1, characterized in that: The gas trap (21) comprises an outer shell (211) and a water inlet opened on the outer shell (211), the water inlet is connected to a pipe (212) extending longitudinally inward, a liquid spray hole (213) is arranged on the side wall of the pipe (212) to spray clean water sample into the outer shell (211), a clear water barrier tube (214) is arranged on the opposite side of the outer shell (211) from the pipe (212), a plurality of glass beads (215) are arranged inside the clear water barrier tube (214) for preventing clear water from entering the rear pipeline, and an air outlet is opened at the upper end of the clear water barrier tube (214) to transmit the moist medium outward.

4. A pretreatment system for measuring hydrogen content in water according to claim 3, characterized in that: The condensate dehydrator (22) comprises a shell (221), a medium inlet is arranged on the shell (221), a coil (222) connected to the medium inlet is arranged in the shell (221) for guiding the flow of the medium inlet, and a liquid outlet is opened on the shell (221) at the outlet position of the coil (222) for the outflow of condensed water.

5. A pretreatment system for measuring hydrogen content in water according to claim 3, characterized in that: A vortex cooler is arranged on the right side of the shell (211) for blowing cold air into the inner cavity of the shell (211), and an air outlet (223) is arranged on the left end of the shell (211).

6. A pretreatment system for measuring hydrogen content in water according to claim 1, characterized in that: The detection module (3) comprises a coalescer (31) for medium filtering. The medium overflowing from the coalescer (31) is adjusted to a suitable flow rate by a flow meter and then sent to a hydrogen analyzer (32) for measurement and detection.

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