Difluoroethane product evaporation residue detection device
By incorporating a double-layer structure of an inner sleeve and a capture strip inside the gas bag, the problem of difluoroethane residue affecting detection accuracy is solved, achieving higher precision detection and convenient gas bag cleaning.
Patent Information
- Application Number
- CN202422950611.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-02
AI Technical Summary
In existing technologies, difluoroethane tends to remain in the gas bag after evaporation, affecting the purity of air samples and reducing detection accuracy.
The gas bag features a double-layer structure design, combining an inner sleeve and trapping strips. The trapping strips inside the inner sleeve adsorb difluoroethane, and the gas bag's opening structure facilitates the evaporation of residual difluoroethane and cleaning of the gas bag.
It improves the accuracy of difluoroethane residue detection and facilitates the cleaning and reuse of gas bags.
Smart Images
Figure CN223692337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of difluoroethane detection technology, specifically to a device for detecting the evaporation residue of difluoroethane products. Background Technology
[0002] Product evaporation residue testing for difluoroethane is typically conducted to ensure that no harmful residues are left after use. This testing usually includes analysis of any impurities, unreacted raw materials, and decomposition products that may form during evaporation. Difluoroethane is a widely used refrigerant and fire extinguishing agent, but it does leave residues after use.
[0003] However, current technologies for detecting residual difluoroethane after product evaporation require collecting air samples from the product or environment being tested. Sampling gas bags are commonly used, but due to the strong polarity and long carbon chain of difluoroethane, it is easily adsorbed. This means that although difluoroethane evaporates, some remains in the gas bag, affecting the purity of the air sample upon subsequent use and thus impacting the accuracy of the detection. Utility Model Content
[0004] The purpose of this invention is to provide a device for detecting the evaporation residue of difluoroethane products, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A device for detecting the evaporation residue of difluoroethane products includes a chromatograph and a gas bag. The gas bag is equipped with an auxiliary component for capturing difluoroethane and assisting in cleaning the gas bag. The auxiliary component includes two connectors located at the top of the gas bag. One end of the gas bag is equipped with a sealing strip. An inner sleeve is provided inside the gas bag. Two elastic ropes are provided on the outer wall of the inner sleeve near one end of the gas bag. A capture strip is provided inside the inner sleeve, and a pull rope is provided at the other end of the capture strip.
[0007] As a preferred embodiment of this utility model, both connectors are embedded and connected to the outer wall of the gas bag, and extend through the gas bag into the inner sleeve inside the gas bag. The connectors of the gas bag are connected to the air inlet of the chromatograph through the gas tube.
[0008] As a preferred embodiment of this utility model, one end of the air bag is an open structure, and the sealing strip is connected to the edge of the opening of the air bag by adhesion, and the sealing strip structures on both sides of the opening can be inserted and connected to each other.
[0009] As the preferred scheme of the utility model, the inner sleeve is located in the air bag, and is adhered and connected with the inner wall of the air bag near the air bag connector, one end of the inner sleeve is an open structure corresponding to the opening direction of the air bag, and extends out through the opening of the air bag.
[0010] As the preferred scheme of the utility model, the sealing rubber strip is in abutment with the extended inner sleeve when being closed, and presses and seals the opening end of the inner sleeve, and the other end of the inner sleeve is connected with the inner wall of the air bag through the elastic rope.
[0011] As the preferred scheme of the utility model, one end of the capturing strip is located in the inner sleeve and connected with the inner wall of the inner sleeve, and the other end extends to the outside from the opening end of the inner sleeve, the outer wall of the capturing strip is provided with a plurality of holes, and the pulling rope pulls the capturing strip to drive the inner sleeve to fold and extend out of the air bag.
[0012] Compared with the prior art, the utility model has the beneficial effects that: aiming at the problems in the background art, the application adopts an auxiliary assembly, increases a double-layer design in the air bag, stores and captures the air sample through the inner sleeve, and can adsorb difluoroethane in the air through the holes on the surface of the capturing strip in the inner sleeve, so that the difluoroethane is captured, the air in the air bag is first extracted and injected into the chromatograph for detection when detecting, then the inner sleeve in the air bag extends out through the opening on one side of the air bag and analyzes and detects the molecules in the capturing strip, so that the residual detection accuracy of difluoroethane is improved, and the opening design of the air bag is convenient for volatilization of the residual air and difluoroethane in the air bag after use, and convenient for secondary use after cleaning the air bag.
[0013] The utility model stores the air sample through the double-layer structure of the air bag, improves the accuracy of detection through the content detection of the air sample and difluoroethane in the capturing strip, and cooperates with the opening structure of the air bag to facilitate volatilization of the residual difluoroethane and cleaning of the air bag. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the overall structure perspective drawing of the utility model.
[0015] Figure 2 It is the appearance structure drawing of the air bag of the utility model.
[0016] Figure 3 It is the air bag sectional view of the utility model.
[0017] Figure 4 It is the air bag and inner sleeve separation structure sectional view of the utility model.
[0018] Mark: 1, chromatograph;2, air bag;201, connector;3, sealing rubber strip;4, inner sleeve;5, elastic rope;6, capturing strip;601, pulling rope. DETAILED DESCRIPTION
[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described in connection with the embodiments of the utility model. Embodiment
[0020] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a difluoroethane product evaporation residual detection device, including chromatograph 1 and gas bag 2, the auxiliary assembly for capturing difluoroethane and assisting the cleaning of gas bag 2 is provided in the gas bag 2, the auxiliary assembly includes two connecting heads 201 being arranged at the top of gas bag 2, for connecting air pump or chromatograph 1 (connecting air pump can inject gas into gas bag 2 to carry out using to air, after sampling, connect chromatograph 1 by air pump can inject gas into chromatograph 1 and carry out detection);
[0021] The gas bag 2 one end is provided with sealing rubber strip 3, sealing rubber strip 3 can extrude and insert locking to the inner sleeve 4 and capture strip 6 that extend, to close the open end of inner sleeve 4, the inner sleeve 4 is provided in the gas bag 2, for storing air sample, the outer wall of the inner sleeve 4 is provided with two elastic ropes 5 close to one end of gas bag 2, and the elastic rope 5 is used to connect one end of the inner sleeve 4 and the inner wall of the gas bag 2, so that the inner sleeve 4 is pulled into the inside of the gas bag 2 and resets, the inner sleeve 4 is provided with capture strip 6, and there are many holes on the surface of the capture strip 6, these holes can absorb gas difluoroethane is volatile organic compounds, which exists in gaseous state at normal temperature, so it can be absorbed and captured by the holes of capture strip 6, the other end of the capture strip 6 is provided with a pull rope 601, and the sealing rubber strip 3 is opened by pulling when gas is extracted and injected into chromatograph 1, and the pull rope 601 is pulled to cooperate with the capture strip 6 to drive one end of the inner sleeve 4 to be folded and extracted from the gas bag 2 to the outside of the gas bag 2, and the pull rope 601 is hooked and fixed with the outer wall of the gas bag 2 through the clamping hole at one end, so that the inner sleeve 4 and the capture strip 6 are exposed, and the difluoroethane on the capture strip 6 is detected by chromatograph 1, the precision of detection is improved by twice detection, and the inner sleeve 4 and the capture strip 6 exposed outside are convenient for residual difluoroethane to volatilize, and convenient for cleaning.
[0022] All electrical elements in the embodiment are controlled by a conventional controller.
[0023] Embodiment, please refer to Figures 1-4, both the connecting heads 201 are embeddedly connected with the outer wall of the air bag 2, and extend through the air bag 2 to the inner sleeve 4 inside the air bag 2, the connecting head 201 of the air bag 2 is communicated with the air inlet hole of the chromatograph 1 through the air pipe, one end of the air bag 2 is an open structure, the sealing rubber strip 3 is connected with the edge of the opening of the air bag 2 through adhesion, and the structures of the sealing rubber strips 3 on both sides of the opening correspond to each other and can be mutually inserted and docked, the inner sleeve 4 is located inside the air bag 2 and is adhesively connected with the inner wall of the air bag 2 near the connecting head 201 of the air bag 2, one end of the inner sleeve 4 is an open structure and corresponds to the opening direction of the air bag 2, and the inner sleeve 4 extends out through the opening of the air bag 2, the sealing rubber strip 3 is in abutment with the extended inner sleeve 4 when closed, and the opening end of the inner sleeve 4 is extruded and closed, the other end of the inner sleeve 4 is connected with the inner wall of the air bag 2 through the elastic rope 5, one end of the capturing strip 6 is located inside the inner sleeve 4 and is connected with the inner wall of the inner sleeve 4, and the other end extends to the outside from the opening end of the inner sleeve 4, a plurality of holes are formed in the outer wall of the capturing strip 6, and the pulling rope 601 pulls the capturing strip 6 to drive the inner sleeve 4 to fold and extend out of the air bag 2. In use, first, connect the air pump with one of the connecting heads 201, then inject air into the air bag 2 for sampling, after sampling, connect the other connecting head 201 with the air pipe and the inlet of the chromatograph 1, inject the sampled air into the chromatograph 1 for detection, then disassemble the air bag 2, open the sealing rubber strip 3 on one side and pull the pulling rope 601 to drive the inner sleeve 4 to fold and extend out of the air bag 2 to the outside of the air bag 2, and at the same time, detect the capturing strip 6 through the chromatograph 1; after the detection is completed, place the air bag 2 in an oven and heat it to eliminate liquid drops to clean it.
[0024] The working process of the utility model: in use, first, connect the air pump with one of the connecting heads 201, then inject air into the air bag 2 for sampling, after sampling, connect the other connecting head 201 with the air pipe and the inlet of the chromatograph 1, inject the sampled air into the chromatograph 1 for detection, then disassemble the air bag 2, open the sealing rubber strip 3 on one side and pull the pulling rope 601 to drive the inner sleeve 4 to fold and extend out of the air bag 2 to the outside of the air bag 2, and at the same time, detect the capturing strip 6 through the chromatograph 1; after the detection is completed, place the air bag 2 in an oven and heat it to eliminate liquid drops to clean it. The utility model stores air samples through the double-layer structure of the air bag, improves the accuracy of detection through the detection of the content of difluoroethane in the air sample and the capturing strip, and facilitates the volatilization of residual difluoroethane and the cleaning of the air bag.
[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A kind of difluoroethane product evaporation residual detection device, including chromatograph (1) and gas bag (2), the inside of the gas bag (2) is provided with the auxiliary assembly for capturing difluoroethane and assisting the cleaning of gas bag (2), it is characterized by: The auxiliary assembly includes two connecting heads (201) arranged at the top of the air bag (2), one end of the air bag (2) is provided with a sealing rubber strip (3), the air bag (2) is internally provided with an inner sleeve (4), the outer wall of the inner sleeve (4) is provided with two elastic ropes (5) near one end of the air bag (2), the inner sleeve (4) is internally provided with a capture strip (6), the other end of the capture strip (6) is provided with a pull rope (601).
2. A device for detecting the evaporation of difluoroethane product residue according to claim 1, characterized in that: Both of the connecting heads (201) are inlayed and connected with the outer wall of the air bag (2) and extend through the air bag (2) to the inner sleeve (4) in the air bag (2), the connecting head (201) of the air bag (2) is communicated with the air inlet hole of the chromatograph (1) through the air pipe.
3. A device for detecting the presence of a DFE product vapor residue according to claim 1, wherein: The air bag (2) is open at one end, the sealing rubber strip (3) is connected with the edge of the opening of the air bag (2) by adhesion, and the sealing rubber strips (3) on both sides of the opening are correspondingly inserted and docked.
4. A device for detecting the presence of a DFE product vapor residue according to claim 1, wherein: The inner sleeve (4) is located in the air bag (2) and is adhesively connected with the inner wall of the air bag (2) near the connecting head (201) of the air bag (2), one end of the inner sleeve (4) is open and corresponds to the opening direction of the air bag (2) and extends out through the opening of the air bag (2).
5. A device for detecting the presence of vapourised difluoroethane product residues according to claim 4, characterised in that: The sealing rubber strip (3) abuts against the extended inner sleeve (4) when it is closed and extrudes the opening end of the inner sleeve (4) to be closed, the other end of the inner sleeve (4) is connected with the inner wall of the air bag (2) through the elastic rope (5).
6. A device for detecting the presence of a DFE product vapor residue according to claim 1, wherein: One end of the capture strip (6) is located in the inner sleeve (4) and connected with the inner wall of the inner sleeve (4), the other end extends to the outside from the opening end of the inner sleeve (4), the outer wall of the capture strip (6) is provided with a plurality of holes, the pull rope (601) pulls the capture strip (6) to drive the inner sleeve (4) to be folded and extended out of the air bag (2).