A sample introduction device for an oxygen bomb calorimeter used to measure the heat of combustion of aerosols.

Abstract

This invention provides a sample introduction device for an oxygen bomb calorimeter used to measure the heat of combustion of aerosols, relating to the technical field. It includes an inlet pipe, an outlet pipe, an exhaust pipe, a first three-way valve, a second three-way valve, and a third three-way valve. The inlet pipe is connected to the first port of the first three-way valve; the second port of the first three-way valve is connected to the first port of the second three-way valve via a first connecting pipe; the third port of the first three-way valve is connected to the third port of the third three-way valve via a second connecting pipe; the third port of the second three-way valve is connected to the outlet pipe; the second port of the second three-way valve is connected to the second port of the third three-way valve via a first connecting pipe; and the first port of the third three-way valve is connected to the exhaust pipe. This invention allows for better gas introduction and avoids leakage, thus solving the problem of sample introduction for aerosol contents. It can also be used for liquid sample introduction.

Description

Technical Field

[0001] This utility model relates to the field of fluid sample introduction technology, and in particular to a sample introduction device for an oxygen bomb calorimeter used to measure the heat of combustion of aerosols. Background Technology

[0002] An oxygen bomb calorimeter is used to measure the heat released or absorbed during the combustion or reaction of a substance. In use, it needs to be filled with oxygen at 30 atmospheres to ensure sufficient oxygen levels. With adequate oxygen, the fuel inside is ignited by controlling an electric current. The fuel burns completely under high pressure, and the calorific value of the fuel is measured by the heat released from the oxygen bomb after combustion.

[0003] Currently, when the substance to be measured is solid, it is usually placed directly into the oxygen bomb calorimeter. When the substance is liquid, it is placed in a capsule or glass container before being placed into the oxygen bomb calorimeter for testing. However, when the substance to be measured is gaseous, such as aerosols, there is a lack of suitable sample introduction devices on the market. If the sample is directly introduced through the oxygen bomb calorimeter's inlet, leakage of the contents is likely. Therefore, there is an urgent need for a sample introduction device to solve the problem of sample introduction for aerosols. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols. It can better introduce gas and avoid leakage, thus solving the problem of sample introduction of aerosol contents. At the same time, it can also introduce liquid samples.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, comprising:

[0007] Sample inlet pipe, sample outlet pipe, exhaust pipe, first three-way valve, second three-way valve, and third three-way valve;

[0008] The intake pipe is connected to the first port of the first three-way valve, the second port of the first three-way valve is connected to the first port of the second three-way valve via a first connecting pipe, the third port of the first three-way valve is connected to the third port of the third three-way valve via a second connecting pipe, the third port of the second three-way valve is connected to the outlet pipe, the second port of the second three-way valve is connected to the second port of the third three-way valve via a first connecting pipe, and the first port of the third three-way valve is connected to the exhaust pipe.

[0009] The oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, as described above, further includes a housing, in which the oxygen bomb calorimeter sample introduction device is disposed. The housing has an inlet, an outlet, and an exhaust port. The inlet is connected to the inlet pipe, the outlet is connected to the outlet pipe, and the exhaust port is connected to the exhaust pipe.

[0010] The oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, as described above, further includes a remote control terminal. The first three-way valve, the second three-way valve, and the third three-way valve are all wireless solenoid valves. The remote terminal is connected to the wireless communication module of the first three-way valve, the second three-way valve, and the third three-way valve.

[0011] The oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, as described above, further includes gaskets, and the gaskets are provided at the connection between the sample inlet and the sample inlet pipe, the connection between the sample outlet and the sample outlet pipe, and the connection between the exhaust port and the exhaust pipe.

[0012] As described above, in the oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, the first connecting tube is further described as a straight tube or a bent tube.

[0013] As described above, in the oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, the second connecting tube is further described as a spiral tube.

[0014] As described above, the sample introduction device for an oxygen bomb calorimeter used to measure the heat of combustion of aerosols is further provided that the shell is made of stainless steel, titanium alloy, or nickel-chromium-molybdenum alloy steel.

[0015] As described above, the sample introduction device for the oxygen bomb calorimeter used to measure the heat of combustion of aerosols further comprises, in which both the first connecting tube and the second connecting tube are made of stainless steel.

[0016] As described above, in the oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, the gasket is further made of perfluororubber.

[0017] Compared with the prior art, the advantages of this utility model are as follows:

[0018] 1. This utility model can better introduce gas and avoid leakage, so as to solve the problem of sample introduction of aerosol contents. At the same time, it can also introduce liquid samples.

[0019] 2. The housing of this utility model can isolate the influence of the external environment on the internal pipes and valves, and the airtightness is further improved by the setting of gaskets. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view of the internal structure of the sample introduction device of the oxygen bomb calorimeter according to an embodiment of this utility model.

[0022] Figure 2 This is a schematic diagram of the sample introduction device of the oxygen bomb calorimeter according to an embodiment of the present invention;

[0023] In the diagram: 1. Sample inlet pipe; 2. Sample outlet pipe; 3. Exhaust pipe; 4. First three-way valve; 5. Second three-way valve; 6. Third three-way valve; 7. First connecting pipe; 8. Second connecting pipe; 9. Shell; 10. Sample inlet; 11. Exhaust outlet; 12. Sample outlet. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Example:

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0027] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this utility model, unless otherwise explicitly 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.

[0030] This utility model provides a technical solution: an oxygen bomb calorimeter sample introduction device for measuring the heat of combustion of aerosols, comprising an inlet pipe 1, an outlet pipe 2, an exhaust pipe 3, a first three-way valve 4, a second three-way valve 5, and a third three-way valve 6; wherein, the inlet pipe 1 is connected to the first port of the first three-way valve 4, the second port of the first three-way valve 4 is connected to the first port of the second three-way valve 5 via a first connecting pipe 7, the third port of the first three-way valve 4 is connected to the third port of the third three-way valve 5 via a second connecting pipe 8, the third port of the second three-way valve 5 is connected to the outlet pipe 2, the second port of the second three-way valve 5 is connected to the second port of the third three-way valve 6 via the first connecting pipe 7, and the first port of the third three-way valve 6 is connected to the exhaust pipe 3.

[0031] Specifically, see Figure 1 It should be noted that, with Figure 1 From this perspective, the upper ports of the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are all first ports; the lower ports of the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are all second ports; and the left / right ports of the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are third ports. When using this sample introduction device, the corresponding valves can be controlled to open according to the type of sample, thereby better introducing the sample into the bomb calorimeter.

[0032] Its working principle is as follows: When the sample is a gas, the gas to be tested is first introduced through the inlet 10, and the outlet 12 is connected to the oxygen bomb calorimeter. At this time, the second and third ports of the first three-way valve 4 are controlled to be open, while the first port is closed; the first and second ports of the third three-way valve 6 are controlled to be closed, while the third port is open, so that the gas to be tested is stored in the second connecting tube 8. Then, oxygen is introduced into the inlet 10. At the same time, the first port of the third three-way valve 6 is controlled to be open, and the first and third ports of the second three-way valve 5 are controlled to be open, while the second port is closed. Finally, the pressure of the introduced oxygen is used to force the gas to be tested to enter the oxygen bomb calorimeter together. This can effectively prevent the gas to be tested from leaking. When the gas to be tested is introduced, the first port of the third three-way valve 6 is controlled to be closed, while the second port is opened, and oxygen continues to be introduced through the inlet 10. The pressure of the oxygen is used to completely expel the gas to be tested remaining in the second connecting tube 7 from the exhaust port 11. When the sample is liquid, the liquid is introduced through the inlet 10 and the outlet 12 is connected to the oxygen bomb calorimeter. At this time, the first and second ports of the first three-way valve 4 are open, while the third port is closed. Similarly, the second and third ports of the second three-way valve 5 are open, while the first port is closed. This allows for rapid liquid sample introduction, eliminating the need to store the sample in the second connecting tube 7 as with gas sample introduction. This sample introduction device allows for seamless switching between gas and liquid sample introduction, greatly improving flexibility.

[0033] As an optional implementation, in some embodiments, a housing 9 is further included. The housing 9 houses the sample introduction device for the oxygen bomb calorimeter. The housing 9 has a sample inlet 10, a sample outlet 12, and an exhaust port 11. The sample inlet 10 is connected to the sample inlet pipe 1, the sample outlet 12 is connected to the sample outlet pipe 2, and the exhaust port 11 is connected to the exhaust pipe 3. See also... Figure 2 The housing 9 can isolate the external environment from the internal pipes and valves, such as temperature, humidity, corrosion, etc., thereby extending the service life of the sample injection device.

[0034] In the above embodiments, furthermore, in some embodiments, gaskets (not shown in the figures) are also included. Gaskets are provided at the connection between the sample inlet 10 and the sample inlet pipe 1, the connection between the sample outlet 12 and the sample outlet pipe 2, and the connection between the exhaust port 11 and the exhaust pipe 3. The gaskets can improve the sealing between the pipes (sample inlet pipe 1, sample outlet pipe 2, exhaust pipe 3) and the openings (sample inlet 10, sample outlet 12, exhaust port 11), effectively preventing sample leakage during the inlet and outlet processes.

[0035] As an optional implementation, in some embodiments, a remote control terminal (not shown) is also included. The first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are all wireless solenoid valves. The remote terminal is signal-connected to the wireless communication module of the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6. To facilitate sample injection control, this sample injection device uses solenoid valves. Furthermore, utilizing wireless communication technology, control commands can be sent from the remote control terminal (e.g., a mobile app or computer software) to the wireless communication module of the corresponding solenoid valve to control its opening or closing.

[0036] As an optional implementation, in some embodiments, the first connecting pipe 7 is a straight pipe or a bend. Depending on the shape of the actual housing 9 (with a housing) or the usage environment (without a housing), the first connecting pipe 7 can be selected to be either a straight pipe or a bend for adaptation.

[0037] As an optional implementation, in some embodiments, the second connecting pipe 8 is a spiral pipe. Compared to a regular straight pipe, a spiral pipe can increase the residence time of the gas to a certain extent, which helps the gas to fully enter the pipe.

[0038] As an optional implementation, in some embodiments, the housing 9 is made of stainless steel, titanium alloy, or nickel-chromium-molybdenum alloy steel. All three materials possess good pressure resistance and sealing performance, providing better protection for the sample introduction device.

[0039] As an optional implementation, in some embodiments, both the first connecting pipe 7 and the second connecting pipe 8 are made of stainless steel. Stainless steel has good pressure resistance and can withstand strong pressure when gas or liquid is introduced.

[0040] As an optional implementation, in some embodiments, the gasket is made of perfluororubber. Perfluororubber has extremely low permeability, effectively preventing gas and liquid leakage, and also possesses high elasticity, allowing it to fit tightly against the sealing surface and improve the sealing effect.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A sample introduction device for an oxygen bomb calorimeter used to measure the heat of combustion of aerosols, characterized in that, include: Sample inlet pipe, sample outlet pipe, exhaust pipe, first three-way valve, second three-way valve, and third three-way valve; The sample inlet pipe is connected to the first port of the first three-way valve, the second port of the first three-way valve is connected to the first port of the second three-way valve via a first connecting pipe, the third port of the first three-way valve is connected to the third port of the third three-way valve via a second connecting pipe, the third port of the second three-way valve is connected to the sample outlet pipe, the second port of the second three-way valve is connected to the second port of the third three-way valve via a first connecting pipe, and the first port of the third three-way valve is connected to the exhaust pipe.

2. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 1, characterized in that, It also includes a housing, in which the oxygen bomb calorimeter sample inlet is provided. The housing has an inlet, an outlet and an exhaust port. The inlet is connected to the inlet pipe, the outlet is connected to the outlet pipe and the exhaust port is connected to the exhaust pipe.

3. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 1, characterized in that, It also includes a remote control terminal, wherein the first three-way valve, the second three-way valve and the third three-way valve are all wireless solenoid valves, and the remote control terminal is connected to the wireless communication module of the first three-way valve, the second three-way valve and the third three-way valve.

4. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 2, characterized in that, It also includes gaskets, which are provided at the connection between the sample inlet and the sample inlet pipe, the connection between the sample outlet and the sample outlet pipe, and the connection between the exhaust port and the exhaust pipe.

5. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 1, characterized in that, The first connecting pipe is a straight pipe or a bent pipe.

6. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 1, characterized in that, The second connecting pipe is a spiral pipe.

7. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 2, characterized in that, The shell is made of stainless steel, titanium alloy, or nickel-chromium-molybdenum alloy steel.

8. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 1, characterized in that, Both the first connecting pipe and the second connecting pipe are made of stainless steel.

9. The sample introduction device for an oxygen bomb calorimeter for measuring the heat of combustion of aerosols according to claim 4, characterized in that, The gasket is made of perfluororubber.

Images