A dedicated temperature measuring instrument for headspace-gas chromatography detection equipment

Abstract

This utility model relates to the field of analytical instrument auxiliary equipment technology, and in particular to a dedicated temperature measuring instrument for headspace-gas chromatography detection equipment. The technical solution is as follows: A dedicated temperature measuring instrument for headspace-gas chromatography detection equipment includes a stopper column. An elastic element is connected to the bottom end of the stopper column, and a temperature sensor probe is mounted on the bottom end of the elastic element. A sensor control box is mounted inside the stopper column, and a battery box is embedded in the upper part of the inner side of the stopper column. The lower side of the battery box is electrically connected to the sensor control box, and a wire is connected to the bottom end of the sensor control box. The wire passes through the bottom end of the stopper column and connects to the temperature sensor probe below. This design, with the upper end of the instrument resembling a stopper and a built-in battery compartment, creatively solves the industry problem that large-size high-temperature button batteries cannot be placed in standard headspace vials. This allows the temperature measuring instrument to work independently without external wiring, avoiding the hassle and safety risks of wiring in sample heating chambers or headspace furnaces.

Description

Technical Field

[0001] This utility model relates to the field of analytical instrument auxiliary equipment technology, and in particular to a temperature measuring instrument specifically for headspace-gas chromatography detection equipment. Background Technology

[0002] In headspace gas chromatography, the sample is sealed in a headspace vial and heated under isothermal conditions, causing volatile components to form an equilibrium vapor phase above the sample. Temperature control and measurement accuracy in this process are crucial for the reliability and reproducibility of the analytical results.

[0003] The following technical challenges are commonly encountered when measuring the temperature of samples inside headspace vials: 1. Power Supply Issues: Traditional wireless temperature probes typically use batteries for power. However, to meet the requirements for long-term operation at high temperatures, the necessary high-temperature batteries (button batteries resistant to temperatures above 125°C) are relatively large. Due to the standard and narrow opening of the headspace vial, compliant batteries cannot be inserted through the opening, making it difficult to implement an internal power supply solution.

[0004] 2. Adaptability Issues: Headspace vials on the market come in various sizes, with varying lengths (heights). Existing rigid temperature probes are ill-suited to accommodate different bottle depths. Customizing probes for each bottle type would be costly and inconvenient. Using rigid wires for connection could easily damage the bottle opening or the probe itself during insertion and removal due to stress, and it would also compromise the sensor's contact with the sample at the bottom of the bottle.

[0005] Therefore, there is an urgent need for a dedicated temperature measuring instrument that can have a built-in power supply and can flexibly adapt to headspace bottles of different specifications. Utility Model Content

[0006] This invention proposes a dedicated temperature measuring instrument for headspace-gas chromatography detection equipment, which solves the problem that traditional wireless temperature probes in the prior art cannot adapt to the headspace bottle opening.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A temperature measuring instrument for headspace gas chromatography detection equipment includes a plug column, an elastic element connected to the bottom end of the plug column, a temperature sensor probe mounted on the bottom end of the elastic element, a sensor control box mounted inside the plug column, a battery box embedded in the upper part of the inner side of the plug column, the lower side of the battery box being electrically connected to the sensor control box, and a wire connected to the bottom end of the sensor control box, the wire passing through the bottom end of the plug column and connecting to the temperature sensor probe below.

[0008] Furthermore, an openable top cover is installed on the top of the plunger.

[0009] Furthermore, the top of the sensor control box is provided with an embedding groove, and the bottom of the battery box is embedded into the embedding groove on the top of the sensor control box.

[0010] Furthermore, the bottom of the temperature sensor probe is ellipsoidal.

[0011] Furthermore, the wire is located inside the elastic element.

[0012] Furthermore, a sleeve is installed on the outer ring surface of the plunger, and the sleeve is made of an elastic compressible material.

[0013] Furthermore, the outer diameter of the plug sleeve gradually increases from bottom to top.

[0014] Furthermore, an outer sealing sleeve is installed on the top of the outer surface of the plug sleeve, the outer sealing sleeve comprising a horizontal first annular piece and a vertical second annular piece.

[0015] Furthermore, it also includes a clamping assembly, which includes a clamping ring and a screw assembly. The clamping ring is wrapped around the outer ring surface of the second annular piece. The clamping ring has a break, and two connecting pieces are symmetrically arranged at both ends of the break. Each connecting piece has a circular hole, and the screw assembly passes through the circular holes on the two connecting pieces.

[0016] Furthermore, it also includes a storage assembly, which includes a torsion spring pivot seat and clamping rollers. Two clamping rollers are symmetrically installed on the lower inner side of the plunger. The two ends of each clamping roller are connected to the inner wall of the plunger through the two torsion spring pivot seats. The wire is clamped between the two clamping rollers, and the two clamping rollers are located below the sensor control box.

[0017] The positive effects of this utility model are: (1) Successful implementation of built-in power supply: By designing the upper part of the instrument as a bottle stopper and incorporating a built-in battery compartment, the industry problem of large-sized high-temperature button batteries not being able to be placed in standard headspace vials is creatively solved. This allows the thermometer to work independently without external wiring, avoiding the hassle and safety risks of wiring in sample heating chambers or headspace furnaces.

[0018] (2) Excellent adaptability and reliability: The flexible connection method of "soft wire + spring" enables the temperature sensor to adapt to different manufacturers and different specifications (especially different heights), ensuring the best contact between the sensor and the sample, thereby improving the accuracy and consistency of temperature measurement. The spring structure also plays a buffering and protective role, preventing equipment damage caused by rigid connection.

[0019] Simple structure, low cost, and easy to use: This utility model has an ingenious structural design, is easy to process and manufacture, requires no modification to existing headspace vials or gas chromatographs, has strong versatility, and greatly improves user experience and detection efficiency. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of the special temperature measuring instrument for headspace-gas chromatography detection equipment of this utility model; Figure 2 This is a schematic diagram of the second-view structure of the special temperature measuring instrument for headspace-gas chromatography detection equipment of this utility model; Figure 3 This is a third-view structural diagram of the special temperature measuring instrument for headspace-gas chromatography detection equipment of this utility model; Figure 4 This is a schematic diagram of the fourth-view structure of the special temperature measuring instrument for headspace-gas chromatography detection equipment of this utility model; Figure 5 This is a schematic diagram of the structure of the wire, elastic element, and temperature sensor probe in this utility model; Figure 6 This is a schematic diagram of the fifth-angle structure of the special temperature measuring instrument for headspace-gas chromatography detection equipment of this utility model; Figure 7 This is a schematic diagram of the first structure of the headspace-gas chromatography detection equipment-specific temperature measuring instrument of this utility model, in Embodiment 2. Figure 8 This is a schematic diagram of the second structure of the headspace-gas chromatography detection device of this utility model, specifically the dedicated temperature measuring instrument. Figure 9 This is a schematic diagram of the third structure of the headspace-gas chromatography detection device of this utility model, in embodiment 2. Figure 10 This is a schematic diagram of the structure of the headspace-gas chromatography detection equipment special temperature measuring instrument of this utility model, embodiment 3; In the picture: 1. Plug; 2. Top cover; 3. Battery box; 4. Sensor control box; 5. Wire; 6. Elastic element; 7. Temperature sensor probe; 8. Plug sleeve; 9. First annular plate; 10. Second annular plate; 11. Tensioning ring; 12. Connecting plate; 13. Screw assembly; 14. Torsion spring shaft seat; 15. Clamping roller. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1 Combination Figure 1-5 As shown, a special temperature measuring instrument for headspace-gas chromatography detection equipment includes a plunger 1, and an elastic element 6 is connected to the bottom end of the plunger 1, wherein the elastic element can be selected as a spring. A temperature sensor probe 7 is installed at the bottom of the elastic element 6. A sensor control box 4 is installed inside the plunger 1. A battery box 3 is embedded in the upper part of the inner side of the plunger 1. The lower side of the battery box 3 is electrically connected to the sensor control box 4. A wire 5 is connected to the bottom of the sensor control box 4. The wire 5 passes through the bottom of the plunger 1 and connects to the temperature sensor probe 7 below. The wire 5 is located inside the elastic element 6.

[0023] A battery holder is created inside the stopper 1, and the battery box 3 is installed in this position. This design cleverly utilizes the space above the bottle opening, fixing batteries that were originally too large to fit inside the bottle at the bottle opening through an "integrated bottle and stopper" method, thus successfully achieving built-in power supply and solving the problem of placing high-temperature batteries.

[0024] The battery box 3 is embedded inside the stopper 1, which can match the standard headspace bottle opening and will not be larger than the bottle opening size, thus improving the accuracy and adaptability of the measurement and ensuring the sealing between the stopper 1 and the bottle opening.

[0025] In actual use, the plunger 1 serves as the main body and also as the bottle stopper. The elastic element 6 and the temperature sensor probe 7 are aligned with the bottle opening and inserted into the headspace vial. Then, the plunger 1 blocks the bottle opening of the headspace vial. At this time, the temperature sensor probe 7 can penetrate into the headspace vial, and the temperature-sensing part of the probe will contact the sample at the bottom of the vial to measure the temperature.

[0026] For bottles of different heights, after the temperature sensor probe 7 contacts the sample at the bottom of the bottle, the elastic element 6 can continue to compress or extend, ensuring that the temperature sensor probe 7 can fully contact the sample at the bottom of the bottle at any height, thus ensuring the accuracy of temperature measurement. It can adapt to bottles of various sizes. The wire 5 is located inside the elastic element 6. Therefore, with sufficient slack, the wire 5 can also maintain a stable connection between the sensor control box 4 and the temperature sensor probe 7 in bottles of various sizes, thereby ensuring excellent temperature measurement results.

[0027] When the thermometer is inserted into the headspace vial, the spring of the elastic element 6 can be compressed, and its elastic force gently pushes the temperature sensing part of the temperature sensor probe 7 towards the bottom of the vial, ensuring that it is in full contact with the sample. Meanwhile, due to the flexibility of the flexible wire 5 and the spring, the structure can adapt to headspace bottles of different lengths. Regardless of the length of the bottle, the sensor can stably contact the bottom area of ​​the bottle under the action of the spring.

[0028] To further ensure the sealing of the bottle opening, a stopper sleeve 8 is installed on the outer ring surface of the stopper 1. The stopper sleeve 8 is made of an elastic compressible material, such as silicone rubber. When the stopper 1 is inserted into the bottle opening, the stopper sleeve 8 fits against the inner edge of the bottle opening. As it continues to be inserted inward, the stopper sleeve 8 will be compressed, further improving the sealing performance.

[0029] The outer diameter of the stopper sleeve 8 gradually increases from bottom to top, thus adapting to headspace bottles of various neck sizes and further improving adaptability.

[0030] The plunger 1 is equipped with an openable top cover 2, which can be opened for maintenance and battery replacement.

[0031] The top of the sensor control box 4 is provided with an embedding groove, and the bottom of the battery box 3 is embedded into the embedding groove on the top of the sensor control box 4 to ensure the connection stability between the battery box 3 and the sensor control box 4.

[0032] The bottom of the temperature sensor probe 7 is ellipsoidal, which can prevent damage to the inner surface of the headspace vial.

[0033] Example 2 To further improve the adaptability and sealing of the thermometer, based on Example 1, such as... Figure 1-9 As shown: An outer sealing sleeve is installed on the top of the outer surface of the plug sleeve 8. The outer sealing sleeve includes a horizontal first annular piece 9 and a vertical second annular piece 10.

[0034] It also includes a clamping assembly, which includes a clamping ring 11 and a screw assembly 13. The clamping ring 11 surrounds the outer ring surface of the second annular piece 10. The clamping ring 11 has a break, and two connecting pieces 12 are symmetrically arranged at both ends of the break. Each connecting piece 12 has a round hole, and the screw assembly 13 passes through the round holes on the two connecting pieces 12.

[0035] After the plunger 1 and the sleeve 8 are inserted into the headspace vial, the sleeve 8 can be placed over the outside of the vial neck to achieve a second external seal. Then, the tightening ring 11 is placed over the outside of the second annular plate 10, the screw assembly 13 is inserted into the connecting plate 12, and the screw assembly 13 is tightened to further lock the second annular plate 10, further improving the sealing performance. Meanwhile, the sleeve 8 is also made of an elastic and deformable material, which can adapt to headspace vials of different diameters, and the screw assembly 13 can also fix and seal vials of different sizes.

[0036] Example 3 Combination Figure 1-10 As shown, the difference between this embodiment and embodiment 2 is that it also includes a storage component, which includes a torsion spring pivot seat 14 and a clamping roller 15. Two clamping rollers 15 are symmetrically installed on the lower inner side of the plunger 1. The two ends of each clamping roller 15 are connected to the inner wall of the plunger 1 through two torsion spring pivot seats 14. The wire 5 is clamped between the two clamping rollers 15. The two clamping rollers 15 are located below the sensor control box 4.

[0037] When the elastic element 6 is compressed, the wire 5 will be compressed. In order to prevent the wire from becoming messy and wrapped around the spring after being compressed inside the elastic element 6, when the spring is compressed, the torsion spring shaft seat 14 is in a stored state. The torsion spring shaft seat 14 will drive the clamping roller 15 to rotate. The rotation of the two clamping rollers 15 will pull the wire 5 upward, thereby preventing the lower wire 5 from bending and wrapping around the spring inside the spring, which would affect normal use.

[0038] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A temperature measuring instrument specifically for headspace-gas chromatography detection equipment, characterized in that, The device includes a plunger (1), with an elastic element (6) connected to the bottom end of the plunger (1). A temperature sensor probe (7) is installed at the bottom end of the elastic element (6). A sensor control box (4) is installed inside the plunger (1). A battery box (3) is embedded in the upper part of the inner side of the plunger (1). The lower side of the battery box (3) is electrically connected to the sensor control box (4). A wire (5) is connected to the bottom end of the sensor control box (4). The wire (5) passes through the bottom end of the plunger (1) and connects to the temperature sensor probe (7) below.

2. The temperature measuring instrument for a headspace-gas chromatography detection device according to claim 1, characterized in that, The plunger (1) is fitted with an openable top cover (2).

3. The temperature measuring instrument for a headspace-gas chromatography detection device according to claim 1, characterized in that, The top of the sensor control box (4) is provided with an embedding groove, and the bottom of the battery box (3) is embedded into the embedding groove on the top of the sensor control box (4).

4. The temperature measuring instrument for a headspace-gas chromatography detection device according to claim 1, characterized in that, The bottom of the temperature sensor probe (7) is ellipsoidal.

5. A temperature measuring instrument for a headspace-gas chromatography detection device according to claim 1, characterized in that, The conductor (5) is located inside the elastic element (6).

6. A dedicated temperature measuring instrument for headspace-gas chromatography detection equipment according to claim 1, characterized in that, A plug sleeve (8) is installed on the outer ring surface of the plug (1), and the plug sleeve (8) is made of an elastic compressible material.

7. A temperature measuring instrument for a headspace-gas chromatography detection device according to claim 6, characterized in that, The outer diameter of the plug sleeve (8) gradually increases from bottom to top.

8. A temperature measuring instrument for a headspace-gas chromatography detection device according to claim 7, characterized in that, The outer surface of the plug sleeve (8) is fitted with an outer sealing sleeve, which includes a horizontal first annular piece (9) and a vertical second annular piece (10).

9. A temperature measuring instrument for a headspace-gas chromatography detection device according to claim 8, characterized in that, It also includes a clamping assembly, which includes a clamping ring (11) and a screw assembly (13). The clamping ring (11) surrounds the outer ring surface of the second annular piece (10). The clamping ring (11) has a break, and two connecting pieces (12) are symmetrically arranged at both ends of the break. Each connecting piece (12) has a round hole, and the screw assembly (13) passes through the round holes on the two connecting pieces (12).

10. A dedicated temperature measuring instrument for headspace-gas chromatography detection equipment according to claim 1, characterized in that, It also includes a storage assembly, which includes a torsion spring pivot seat (14) and a clamping roller (15). Two clamping rollers (15) are symmetrically installed on the lower inner side of the plunger (1). The two ends of each clamping roller (15) are connected to the inner wall of the plunger (1) through the two torsion spring pivot seats (14). The wire (5) is clamped between the two clamping rollers (15). The two clamping rollers (15) are located below the sensor control box (4).

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