Oxygen bomb calorimeter

Abstract

The invention relates to the technical field of calorific value detection, and particularly discloses an oxygen bomb calorimeter comprising a base which is divided into a first quadrant area, a second quadrant area, a third quadrant area and a fourth quadrant area by a rectangular coordinate system perpendicular to an edge; the liquid storage tank is arranged on the base, and more than 50% of the projection area of the projection of the liquid storage tank on the base is located in a first quadrant region; the measuring barrel is arranged on the base, more than 50% of the projection area of the measuring barrel on the base is located in a third quadrant area, and the projection area of the liquid storage tank and the measuring barrel projected to other quadrant areas respectively accounts for not more than 50% of the area of the quadrant area. The oxygen bomb calorimeter adopts an integrated design, does not need to be externally connected with a water pipe or a control circuit during use, and is convenient to use and carry. And the space utilization of the instrument is more compact, so that the occupied area of the instrument in a laboratory is smaller. The main parts of the projection of the measuring barrel and the liquid storage tank are arranged in the left front area and the right rear area respectively, the use habits of most people are better met, and the layout is more reasonable.

Description

Technical Field

[0001] The present application relates to the technical field of calorific value detection, and more specifically, to an oxygen bomb calorimeter. Background Art

[0002] Oxygen bomb calorimeter is an instrument used to measure the calorific value of a substance that can be completely burned in high-pressure oxygen. It mainly includes various types such as fully automatic oxygen bomb calorimeter, oxygen bomb calorimeter and oxygen bomb calorimeter. Its characteristics are that it uses oxygen as a combustion aid and evaluates the calorific value of a substance by measuring the heat released when the substance is completely burned in high-pressure oxygen.

[0003] The main body of a common oxygen bomb calorimeter includes a liquid storage tank and a test barrel, and the two are the components that account for a relatively large volume of the internal structure of the oxygen bomb calorimeter. The test barrel includes an inner barrel and an outer barrel that are nested, and uses water as the medium. The inner barrel and the outer barrel are the main parts of the measuring unit of the oxygen bomb calorimeter, which are filled with liquid, usually water, and the oxygen bomb (a sealed container that is resistant to high temperature, high pressure and high corrosion in the oxygen bomb calorimeter) is immersed in it. The combustion heat of the oxygen bomb is obtained by measuring the change in water temperature. The liquid storage tank is the main component of the pre-temperature control unit for the liquid in the inner barrel or the entire calorimeter.

[0004] Most of the pre-temperature control units of oxygen bomb calorimeters currently on the market use compressor refrigeration technology to control temperature. Since the compressor vibrates greatly when working, it is not suitable to be placed in the measuring unit of the oxygen bomb calorimeter. Therefore, the measuring unit and the pre-temperature control unit are mostly split structures, which are respectively arranged in independent boxes. When in use, the two units are connected by pipelines.

[0005] With the application and improvement of semiconductor refrigeration technology, there is no obvious interference such as vibration in refrigeration temperature control, so the pre-temperature control unit can be integrated with the measurement unit, that is, an integrated design of placing the test barrel and water tank in the same box becomes possible.

[0006] However, since the test barrel and the water tank occupy a large volume, how to arrange the two in the same outer box is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0007] In view of this, the purpose of the present application is to provide an oxygen bomb calorimeter, which can effectively solve the problem.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] An oxygen bomb calorimeter, comprising:

[0010] A base, the base is rectangular, and the base is divided into four quadrants by a rectangular coordinate system perpendicular to the sides, namely the first quadrant, the second quadrant, the third quadrant and the fourth quadrant;

[0011] A liquid storage tank is arranged on the base, wherein more than 50% of the projection area of ​​the liquid storage tank in the projection of the base is located in the first quadrant, and the projection area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant;

[0012] A measuring bucket is arranged on the base, wherein more than 50% of the projection area of ​​the measuring bucket in the projection of the base is located in the third quadrant, and the projection area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant.

[0013] Optionally, in the above oxygen bomb calorimeter, the first quadrant area and the second quadrant area are distributed along the length direction of the base, and the third quadrant area and the fourth quadrant area are distributed along the width direction of the base;

[0014] The projection of the measuring bucket on the base is entirely located in the first quadrant, or partially located in the first quadrant and partially located in the fourth quadrant; the projection of the liquid storage tank on the base is entirely located in the third quadrant, or partially located in the third quadrant and partially located in the second quadrant.

[0015] Optionally, in the above oxygen bomb calorimeter, at least 80% of the projection area of ​​the measurement barrel on the base is located in the first quadrant;

[0016] At least 80% of the projection area of ​​the liquid storage tank on the base is located in the third quadrant.

[0017] Optionally, in the above oxygen bomb calorimeter, an interface connecting the measuring barrel and the liquid storage tank is provided on a side of the measuring barrel facing the fourth quadrant;

[0018] The interface for communicating the liquid storage tank with the measuring barrel is arranged on a side of the liquid storage tank facing the second quadrant.

[0019] Optionally, in the above oxygen bomb calorimeter, the fourth quadrant is provided with a touch screen.

[0020] Optionally, the oxygen bomb calorimeter further comprises a measuring barrel cover provided on the measuring barrel and a liquid storage tank cover provided on the liquid storage tank, wherein the projection of the liquid storage tank cover on the base is at least located in the first quadrant;

[0021] The projection of the measuring barrel cover on the base is at least located in the third quadrant.

[0022] Optionally, the oxygen bomb calorimeter further comprises a first lifting drive device for driving the measuring barrel cover to lift up and down, and the first lifting drive device is arranged in the second quadrant;

[0023] and / or,

[0024] It also includes a second lifting drive device for driving the liquid storage barrel cover to rise and fall, and the second lifting drive device is arranged in the fourth quadrant.

[0025] Optionally, in the above oxygen bomb calorimeter, the measuring barrel comprises an outer barrel and an inner barrel which are nested with each other, and the oxygen bomb calorimeter comprises a measuring liquid circuit, and the measuring liquid circuit comprises:

[0026] A liquid storage tank self-circulation loop comprises the liquid storage tank, a first pump and a refrigerator, wherein the first pump and the refrigerator are connected between the outlet and the inlet of the liquid storage tank, and the refrigerator is used to cool the liquid in the liquid storage tank to below room temperature;

[0027] The outer barrel self-circulation loop comprises the outer barrel, a second pump and a heater, wherein the second pump and the heater are connected to the inlet and outlet of the outer barrel, and the heater is used to heat the liquid in the outer barrel to above room temperature;

[0028] The outer barrel liquid inlet liquid circuit comprises the first pump and a first valve connected between the first pump and the inlet of the outer barrel, wherein the first valve is used to connect or disconnect the first pump and the outer barrel, and when the first pump is connected to the outer barrel, the first pump is used to pump the liquid in the liquid storage tank into the outer barrel;

[0029] The inner barrel liquid inlet liquid circuit is used to add a fixed amount of liquid in the liquid storage tank into the inner barrel. The inner barrel liquid inlet liquid circuit includes the first pump and a second valve connected between the first pump and the inlet of the inner barrel. The second valve is used to connect or disconnect the first pump and the inner barrel. When the first pump is connected to the inner barrel, the first pump is used to pump the liquid in the liquid storage tank into the inner barrel.

[0030] Optionally, in the above oxygen bomb calorimeter, the inner barrel liquid inlet liquid path further includes a third valve and a measuring cup, and the third valve and the measuring cup are sequentially connected between the first pump and the second valve;

[0031] The first pump is used to pump the liquid in the liquid storage tank to the measuring cup when the second valve disconnects the measuring cup and the inner barrel and the third valve connects the first pump and the measuring cup. The measuring cup is used to measure a fixed amount of the liquid to add to the inner barrel.

[0032] Optionally, in the above-mentioned oxygen bomb calorimeter, a liquid level detection device is provided in the inner barrel, the liquid level detection device is used to detect the liquid level in the inner barrel, and the second valve is used to disconnect the first pump and the inner barrel when the liquid level detection device detects that the liquid level in the inner barrel reaches a preset liquid level.

[0033] The oxygen bomb calorimeter provided in the present application is applied, and the liquid storage tank and the measuring barrel are respectively arranged on the same base, and the base is divided into four quadrants by a rectangular coordinate system, namely, the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant. Since the liquid storage tank and the measuring barrel in the oxygen bomb calorimeter are the two larger components in the oxygen bomb calorimeter, and the volumes of the two are related to the volume of the inner barrel of the measuring barrel, and the volumes of the two are close, the main parts of the liquid storage tank and the measuring barrel are respectively arranged in the first quadrant and the third quadrant in the present application, and the projections of the measuring barrel and the liquid storage tank on the base are used for calculation and distribution. Specifically, more than 50% of the projection area of ​​the measuring barrel in the projection of the base is located in the first quadrant, and more than 50% of the projection area of ​​the liquid storage tank in the projection of the base is located in the third quadrant, and the projection area of ​​the liquid storage tank or the measuring barrel projected to other quadrants does not occupy more than 50% of the area of ​​the quadrant. The oxygen bomb calorimeter provided by the present application can be integrated into an integrated structure by arranging the liquid storage tank and the measuring barrel on the same base, so that no external liquid pipeline is required. In addition, the liquid storage tank and the measuring barrel are diagonally distributed, and the remaining smaller components can be arranged accordingly according to the positions of the liquid storage tank and the measuring barrel, so that the space is reasonably utilized and the space utilization rate is improved. In addition, when in use, one side of the third quadrant and the fourth quadrant can be placed forward, that is, one side of the third quadrant and the fourth quadrant is close to the operator, so that the measuring barrel is close to the operator, which conforms to the operating habits of most users. In addition, the liquid storage tank is placed on the rear side, which is conducive to the connection of the pipeline between the measuring barrel, and the second quadrant and the fourth quadrant can also facilitate the layout and installation of other components that cooperate with the liquid storage tank and the measuring barrel.

[0034] In summary, the oxygen bomb calorimeter provided in this application uses an integrated design. It does not require external water pipes or control lines when in use, and is easy to use and carry. The integrated design makes the instrument's space utilization more compact, making the instrument occupy a smaller area in the laboratory and meeting the needs of being placed on the desktop. The main parts of the projection of the measuring barrel and the liquid storage tank are set in the left front area and the right rear area respectively, which is more in line with the usage habits of most people and has a more reasonable layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of a split oxygen bomb calorimeter in the prior art;

[0037] Figure 2 It is a schematic diagram of an integrated oxygen bomb calorimeter in the prior art;

[0038] Figure 3 A schematic diagram of the layout of an oxygen bomb calorimeter according to a specific embodiment of the present application;

[0039] Figure 4 A schematic diagram of the layout of an oxygen bomb calorimeter according to another specific embodiment of the present application;

[0040] Figure 5 A schematic diagram of a measuring fluid circuit of an oxygen bomb calorimeter according to a specific embodiment of the present application.

[0041] Reference numerals:

[0042] 01- measuring barrel; 02- liquid storage tank; 03- connecting pipe;

[0043] 100-base; 110-first quadrant area; 120-second quadrant area; 130-third quadrant area; 140-fourth quadrant area; 200-measuring barrel; 210-inner barrel; 220-outer barrel; 300-liquid storage tank; 400-first pump; 500-refrigerator; 600-second pump; 700-heater; 800-first valve; 900-second valve; 910-discharge pump. DETAILED DESCRIPTION

[0044] The embodiment of the present application discloses an oxygen bomb calorimeter to reduce its volume and meet the requirement of being placed on a desktop for use.

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Figure 1 A split oxygen bomb calorimeter is shown, which includes a measuring unit and a temperature control unit. A measuring barrel 01 is placed in the measuring unit, and a liquid storage tank 02 and a compressor are placed in the temperature control unit. The measuring unit and the temperature control unit are set independently and connected by a connecting pipe 03 when in use. The two units are controlled and operated separately, which brings inconvenience to the user. At the same time, the split design generally occupies a large laboratory area.

[0047] Figure 2 An integrated oxygen bomb calorimeter is shown, with a measuring barrel 01 and a liquid storage tank 02 placed in two layers. This structure is suitable for a vertical oxygen bomb calorimeter. However, the placement of the measuring barrel 01 and the liquid storage tank 02 in two layers makes the oxygen bomb calorimeter too high, which limits its use.

[0048] In order to at least partially solve the above-mentioned defects, the present application provides an oxygen bomb calorimeter. Figure 3 and Figure 4 The preferred embodiments of the present application are described.

[0049] See also Figure 3 In some embodiments, the oxygen bomb calorimeter provided in the present application includes a base 100, a liquid storage tank 300 and a measuring barrel 200. Among them, the base 100 is used to install the liquid storage tank 300 and the measuring barrel 200. It can be understood that the base 100 can be the bottom plate of the outer box of the oxygen bomb calorimeter, or it can be a separately arranged support seat that can be placed in the outer box, etc. The shape of the base 100 can be plate-shaped or a frame structure, etc., which is not specifically limited here. The liquid storage tank 300 and the measuring barrel 200 are both integrated on the base 100 to form an integrated oxygen bomb calorimeter. That is, the liquid storage tank 300 and the measuring barrel 200 in the present application can be arranged in the same chassis of the oxygen bomb calorimeter. The base 100 is rectangular, and the base 100 is divided into a first quadrant area 110, a second quadrant area 120, a third quadrant area 130 and a fourth quadrant area 140 by a rectangular coordinate system perpendicular to the side. A rectangular coordinate system perpendicular to the side means that the X-axis and Y-axis of the rectangular coordinate system are perpendicular to the long side and short side of the base respectively. Figure 3 As shown, the base 100 is divided into four parts, i.e., four quadrants, by two mutually perpendicular straight lines (dashed lines in the figure), and the two straight lines are respectively perpendicular to the long side and the short side of the base. According to the orientation of the bottom plate, the four quadrants can be recorded as the first quadrant 110, the second quadrant 120, the third quadrant 130, and the fourth quadrant 140 in a counterclockwise direction.

[0050] Since the volume of the measuring barrel 200 is limited by the oxygen bomb, the volume of the barrel, etc., it cannot be arbitrarily small. The volume of the liquid storage tank 300 is also limited by the volume of the barrel, and cannot be arbitrarily small. The number and volume of other components are relatively flexible. Therefore, the layout of the oxygen bomb calorimeter can first determine the position layout of the measuring barrel 200 and the liquid storage tank 300, and then adjust the position layout of other components. According to the volume of the measuring barrel 200 and the liquid storage tank 300, the size of the four quadrants is adjusted accordingly. Exemplarily, the areas of the four quadrants can be all the same, two by two the same, or all different. The liquid storage tank 300 is arranged on the base 100, and more than 50% of the projection area of ​​the liquid storage tank 300 in the projection of the base 100 is located in the first quadrant 110, and the projection area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant. The measuring bucket 200 is disposed on the base 100, and more than 50% of the projection area of ​​the measuring bucket 200 in the projection of the base 100 is located in the third quadrant 130, and the projection area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant. Figure 3As shown, the volume of the measuring barrel 200 and the volume of the liquid storage tank 300 are both related to the volume of the inner barrel 210 of the measuring barrel 200, so the volumes of the two are close, and two figures with similar shadow areas are used as examples. In this application, the measuring barrel 200 and the liquid storage tank 300 are projected onto the base 100 from a top view, and the projection layout is that more than 50% of the projection area of ​​the measuring barrel 200 falls in the third area and more than 50% of the projection area of ​​the water storage tank falls in the first area, and the measuring barrel 200 and the liquid storage tank 300 form a diagonal layout relationship. Specifically, the projection area of ​​the measuring barrel 200 or the liquid storage tank 300 may span two quadrants, such as a portion of the projection of the measuring barrel 200 is located in the second quadrant 120, and the projection area in the second quadrant 120 occupies no more than 50% of the area of ​​the second quadrant 120; such as a portion of the projection of the liquid storage tank 300 is located in the fourth quadrant 140, and the projection area in the fourth quadrant 140 occupies no more than 50% of the area of ​​the fourth quadrant 140. That is, most of the projection areas of the measuring barrel 200 or the liquid storage tank 300 are in the first quadrant 110 and the third quadrant 130, respectively.

[0051] Using the oxygen bomb calorimeter provided in the present application, the liquid storage tank 300 and the measuring barrel 200 are respectively arranged on the same base 100, and the base 100 is divided into four quadrants by a rectangular coordinate system, namely, a first quadrant 110, a second quadrant 120, a third quadrant 130 and a fourth quadrant 140. Since the liquid storage tank 300 and the measuring barrel 200 in the oxygen bomb calorimeter are two components with larger volumes in the oxygen bomb calorimeter, and the volumes of the two are related to the volume of the inner barrel 210 of the measuring barrel 200, and the volumes of the two are close, the main parts of the liquid storage tank 300 and the measuring barrel 200 are respectively arranged in the first quadrant area 110 and the third quadrant area 130 in the present application, and the projections of the measuring barrel 200 and the liquid storage tank 300 on the base 100 are used for calculation and distribution. Specifically, more than 50% of the projection area of ​​the projection of the measuring barrel 200 on the base 100 is located in the first quadrant area 110, and more than 50% of the projection area of ​​the projection of the liquid storage tank 300 on the base 100 is located in the third quadrant area 130. The oxygen bomb calorimeter provided in the present application can be integrated into an integrated structure by arranging the liquid storage tank 300 and the measuring barrel 200 on the same base 100, so that no external liquid pipeline is required. The liquid storage tank 300 and the measuring barrel 200 are diagonally distributed, and the remaining smaller components can be arranged according to the positions of the liquid storage tank 300 and the measuring barrel 200, so that the space is reasonably used and the space utilization rate is improved. In addition, when in use, one side of the third quadrant and the fourth quadrant can be placed forward, that is, one side of the third quadrant and the fourth quadrant is close to the operator, so that the measuring barrel 200 is close to the operator, which conforms to the operating habits of most users. In addition, the liquid storage tank 300 is placed at the rear side, which is conducive to the connection of the pipeline between the measuring barrel 200, and the second quadrant and the fourth quadrant can also facilitate the layout and installation of other components that cooperate with the liquid storage tank 300 and the measuring barrel 200.

[0052] In summary, the oxygen bomb calorimeter provided by the present application adopts an integrated design, and does not require external water pipes or control lines when in use, and is convenient to use and carry. The integrated design makes the space utilization of the instrument more compact, so that the instrument occupies a smaller area in the laboratory and can meet the needs of being placed on the desktop for use. The main parts of the projection of the measuring barrel 200 and the liquid storage tank 300 are respectively set in the left front area and the right rear area, which is more in line with the usage habits of most people and has a more reasonable layout.

[0053] In some embodiments, the first quadrant area 110 and the second quadrant area 120 are distributed along the length direction of the base 100, and the third quadrant area 130 and the fourth quadrant area 140 are distributed along the width direction of the base 100. Using a rectangular base 100 and arranging the quadrants according to the above layout can make full use of space and better adapt to the platform of a conventional laboratory, so as to facilitate placement in the laboratory.

[0054] Further, the projection of the measuring barrel 200 on the base 100 is entirely located in the first quadrant 110, or partially located in the first quadrant 110 and partially located in the fourth quadrant 140; the projection of the liquid storage tank 300 on the base 100 is entirely located in the third quadrant 130, or partially located in the third quadrant 130 and partially located in the second quadrant 120. According to the volume of the measuring barrel 200 and the liquid storage tank 300, four quadrants can be divided accordingly. In one example, see Figure 4 , the projection of the measuring barrel 200 on the base 100 is entirely located in the first quadrant 110. In another example, the projection of the liquid storage tank 300 on the base 100 is entirely located in the third quadrant 130. In yet another example, since the volume of the measuring barrel 200 and the liquid storage tank 300 is relatively large, when both are difficult to install in one quadrant, the projection area of ​​the measuring barrel 200 or the liquid storage tank 300 can span two quadrants, see Figure 3 Specifically, the projection of the measuring barrel 200 on the base 100 is located in the first quadrant 110 and the fourth quadrant 140, and the projection of the liquid storage tank 300 on the base 100 is located in the third quadrant 130 and the second quadrant 120, that is, the main parts of the measuring barrel 200 and the liquid storage tank 300 are diagonally distributed, and both are arranged in the width direction of the base 100, which is more suitable for the layout of the liquid storage tank 300 and the measuring barrel 200 with a circular or positive cross-section, thereby achieving full utilization of the space and reserving a larger space for other components except for the whole block.

[0055] In some embodiments, at least 80% of the projection area of ​​the projection of the measuring barrel 200 on the base 100 is located in the first quadrant 110. At least 80% of the projection area of ​​the projection of the liquid storage tank 300 on the base 100 is located in the third quadrant 130. Most of the measuring barrel 200 and the liquid storage tank 300 are located in the corresponding first quadrant 110 and third quadrant 130, making the overall oxygen bomb calorimeter structure more compact. In other embodiments, according to space conditions, at least 60%, 70% or 90% of the projection area of ​​the measuring barrel 200 on the base 100 can also be set to be located in the first quadrant 110; at least 60%, 70% or 90% of the projection area of ​​the projection of the liquid storage tank 300 on the base 100 is located in the third quadrant 130.

[0056] In some embodiments, the interface for connecting the measuring barrel 200 with the liquid storage tank 300 is arranged on the side of the measuring barrel 200 facing the fourth quadrant 140; the interface for connecting the liquid storage tank 300 with the measuring barrel 200 is arranged on the side of the liquid storage tank 300 facing the second quadrant. That is, the interface on the measuring barrel 200 connecting with the liquid storage tank 300 is arranged toward the liquid storage tank 300, and the interface on the liquid storage tank 300 connecting with the measuring barrel 200 is arranged toward the measuring barrel 200, so that the measuring barrel 200 is connected with the liquid storage tank 300 through the pipeline, the path of the pipeline is relatively short, and the layout is convenient.

[0057] In some embodiments, the fourth quadrant area 140 is provided with a touch screen. The touch screen is used to control the oxygen bomb calorimeter. Its specific structure and control principle can refer to the corresponding settings on the conventional oxygen bomb calorimeter, and will not be repeated here. When in use, the third quadrant area 130 and the fourth quadrant area 140 of the oxygen bomb calorimeter are placed in front. During testing, the touch screen is located on the front right side of the oxygen bomb calorimeter, which conforms to the operating habits of most users, such as right-hand operation.

[0058] In some embodiments, the oxygen bomb calorimeter further includes a measuring barrel 200 cover provided on the measuring barrel 200 and a liquid storage tank 300 cover provided on the liquid storage tank 300. The measuring barrel 200 cover is used to cooperate with the measuring barrel 200, and it can cover the top of the measuring barrel 200; the liquid storage tank 300 cover cooperates with the liquid storage tank 300, and it can cover the top of the liquid storage tank 300. The specific structures of the measuring barrel 200 cover and the liquid storage tank 300 cover and the matching methods with the corresponding measuring barrel 200 and liquid storage tank 300 can refer to conventional oxygen bomb calorimeters, and will not be repeated here. The area of ​​the measuring barrel 200 cover can far exceed the measuring barrel 200. The projection of the measuring barrel 200 refers to the projection of the barrel body of the measuring barrel 200 as the boundary, and is not the projection of the measuring barrel 200 cover. Accordingly, the area of ​​the cover of the liquid storage tank 300 can be much larger than the liquid storage tank 300, and the top view projection of the liquid storage tank 300 is the projection of the barrel body of the liquid storage tank 300 as the boundary, rather than the projection of the cover of the liquid storage tank 300.

[0059] When a measuring bucket 200 cover is provided, the projection of the measuring bucket 200 cover on the base 100 is at least located in the first quadrant 110. If the projection area of ​​the measuring bucket 200 cover on the base 100 is larger, it can also extend to at least one of the second quadrant 120, the third quadrant 130 and the fourth quadrant 140.

[0060] When a liquid storage tank 300 cover is provided, the projection of the liquid storage tank 300 cover on the base 100 is at least located in the third quadrant 130. If the projection area of ​​the liquid storage tank 300 cover on the base 100 is larger, it may also extend to at least one of the first quadrant 110, the second quadrant 120 and the fourth quadrant 140.

[0061] In some embodiments, the oxygen bomb calorimeter further includes a first lifting drive device for driving the lid of the measuring barrel 200 to lift and lower. The specific structure of the first lifting drive device and the connection relationship with the measuring barrel 200 can refer to the setting of a conventional oxygen bomb calorimeter. The first lifting drive device is arranged in the second quadrant 120 to achieve full utilization of space.

[0062] In some embodiments, the oxygen bomb calorimeter further includes a second lifting drive device for driving the liquid storage tank cover to lift up and down, and the second lifting drive device is arranged in the fourth quadrant 140. The specific structure of the second lifting drive device and the connection relationship with the liquid storage tank 300 can refer to the setting of a conventional oxygen bomb calorimeter. The second lifting drive device is arranged in the second quadrant 120 to achieve full utilization of space.

[0063] In some instances, see Figure 5 The measuring barrel 200 includes an outer barrel 220 and an inner barrel 210 which are nested, and the oxygen bomb calorimeter includes a measuring liquid circuit, which includes a liquid storage tank self-circulation loop, an outer barrel self-circulation loop, an outer barrel liquid inlet liquid circuit, and an inner barrel liquid inlet liquid circuit. The liquid storage tank self-circulation loop includes a liquid storage tank 300, a first pump 400, and a refrigerator 500. The first pump 400 and the refrigerator 500 are connected between the outlet and the inlet of the liquid storage tank 300. The refrigerator 500 is used to cool the liquid in the liquid storage tank 300 to below room temperature. Specifically, the liquid storage tank 300, the first pump 400 and the refrigerator 500 can be connected by pipelines. For example, the first pump 400 and the refrigerator 500 are sequentially connected between the outlet and the inlet of the liquid storage tank 300. When the first pump 400 is started, the liquid in the liquid storage tank 300 can be discharged through the outlet of the liquid storage tank 300, flow through the refrigerator 500 for cooling, and then flow back to the liquid storage tank 300 through the inlet of the liquid storage tank 300, so as to realize the circulation of the liquid in the self-circulation loop of the liquid storage tank, so as to cool the liquid in the self-circulation loop of the liquid storage tank, thereby realizing the temperature control of the liquid in the liquid storage tank 300. The liquid in the liquid storage tank 300 is cooled to below the room temperature by the refrigerator 500, that is, the target setting temperature of the liquid storage tank 300 is lower than the room temperature, so that the temperature control process does not require heating. In some cases, if the temperature of the liquid in the liquid storage tank 300 needs to be increased, the first valve 800 can be opened, the first pump 12 can be turned on and the liquid with a higher temperature in the outer barrel 220 can be pumped into the liquid storage tank 300 to increase the temperature of the liquid in the liquid storage tank 300.

[0064] The outer barrel self-circulation loop includes an outer barrel 220, a second pump 600 and a heater 700. The second pump 600 and the heater 700 are connected to the inlet and outlet of the outer barrel 220 gradually, and the heater 700 is used to heat the liquid in the outer barrel 220 to above room temperature. Specifically, the outer barrel 220, the second pump 600 and the heater 700 can be connected by a pipeline. For example, the second pump 600 and the heater 700 are sequentially connected between the liquid outlet and the liquid inlet of the outer barrel 220. When the second pump 600 is started, the liquid in the outer barrel 220 can be discharged through the liquid outlet of the outer barrel 220, and after flowing through the heater 700, it flows back to the outer barrel 220 from the liquid inlet of the outer barrel 220, so as to realize the circulation of the liquid in the outer barrel self-circulation loop, so as to heat the liquid in the outer barrel self-circulation loop, thereby realizing the temperature control of the liquid in the outer barrel 220.

[0065] The outer barrel liquid inlet liquid path includes a first pump 400 and a first valve 800 connected between the first pump 400 and the inlet of the outer barrel 220. The first valve 800 is used to connect or disconnect the first pump 400 and the outer barrel 220. When the first pump 400 is connected to the outer barrel 220, the first pump 400 is used to pump the liquid in the liquid storage tank 300 to the outer barrel 220. The outer barrel liquid inlet liquid path is used to inject liquid into the outer barrel 220. It shares the first pump 400 with the liquid storage tank self-circulation loop. Specifically, the outlet of the liquid storage tank 300 is connected to one end of the first pump 400, and the other end of the first pump 400 is respectively connected to the first valve 800 and the inlet of the refrigerator 500. The first pump 400 is started, the first valve 800 is opened, and the liquid in the liquid storage tank 300 can enter the outer barrel 220 through the first pump 400. After the outer barrel 220 is filled with water, the first valve 800 is closed, and the liquid in the outer barrel 220 is isolated from the liquid in the liquid storage tank 300. At this time, the second pump 600 and the heater 700 can be turned on, and the outer barrel 220 is self-circulated and temperature controlled to heat the temperature of the liquid in the outer barrel 220 to a temperature higher than room temperature, that is, the set temperature of the outer barrel 220 is higher than room temperature, so that the temperature control process of the outer barrel 220 does not require refrigeration. In some cases, if the outer barrel 220 needs to be cooled, the first valve 800 can be opened, and the first pump 12 is started to pump the liquid with a lower temperature in the liquid storage tank 300 into the outer barrel 220 to reduce the temperature of the liquid in the outer barrel 220.

[0066] The inner barrel liquid inlet liquid path is used to add a fixed amount of liquid in the liquid storage tank 300 to the inner barrel 210. The inner barrel liquid inlet liquid path includes a first pump 400 and a second valve 900 connected between the first pump 400 and the inlet of the inner barrel 210. The second valve 900 is used to connect or disconnect the first pump 400 and the inner barrel 210. When the first pump 400 is connected to the inner barrel 210, the first pump 400 is used to pump the liquid in the liquid storage tank 300 to the inner barrel 210. The inner barrel liquid inlet liquid path is used to inject a fixed amount of liquid into the inner barrel 210. It shares the first pump 400 with the liquid storage tank self-circulation loop, that is, a liquid pump is provided for the self-circulation of the liquid storage tank 300, the liquid inlet of the outer barrel 220 and the liquid inlet of the inner barrel 210. Specifically, the outlet of the liquid storage tank 300 is connected to one end of the first pump 400, and the other end of the first pump 400 is respectively connected to the first valve 800, the second valve 900 and the inlet of the refrigerator 500. During the test, the first pump 400 is started, the second valve 900 is opened, and the liquid in the liquid storage tank 300 can enter the inner barrel 210 through the first pump 400. After the inner barrel 210 is filled with water, the second valve 900 is closed. After the test is completed, the liquid in the inner barrel 210 can be discharged, and the liquid can be refilled during the next measurement.

[0067] By setting the measuring liquid circuit, both the outer barrel 220 and the liquid storage tank 300 can be self-circulating and temperature controlled, that is, the two can realize independent temperature control, and can be controlled at different target temperatures respectively. During the test, the first valve 800 disconnects the connection between the first pump 400 and the outer barrel 220, that is, the outer barrel 220 is completely isolated from the inner barrel 210, and the outer barrel 220 does not participate in the liquid storage tank 300 and the inner barrel 210, realizing the isolation and independent temperature control of the liquid circuit of the outer barrel 220, so that it will not affect the test. After the test is completed, the liquid with the increased temperature of the inner barrel 210 only returns to the liquid storage tank 300, which does not affect the temperature control of the outer barrel 220, thereby improving the test efficiency. In addition, the liquid circuit structure is simple, and only one refrigerator 500 and one heater 700 are required to realize the independent temperature control of the outer barrel 220 and the liquid storage tank 300. The first valve 800 and the second valve 900 cooperate to realize the isolation of the outer barrel 220, with a small number of parts and a simple connection structure, thereby reducing the preparation and maintenance costs. In addition, the first valve 800 can be started and stopped in combination with the first pump 400 to replenish the low-temperature liquid in the liquid storage tank 300 into the outer barrel 220, or the higher-temperature liquid in the outer barrel 220 can be replenished into the liquid storage tank 11 to supplement the temperature control capabilities of the outer barrel 220 and the liquid storage tank 300.

[0068] Specifically, the target temperature of the outer barrel 220 can be set slightly higher than the ambient temperature according to the standard requirements, and the temperature is controlled by the heater 700 connected in series to the outer barrel self-circulation loop. When the controlled temperature is higher than the target temperature of the outer barrel 220, the first valve 800 is started and stopped to control the amount of water entering the outer barrel 14 from the liquid storage tank 11 so that the temperature of the outer barrel 220 returns to its target temperature. The target temperature of the liquid storage tank 300 can be set slightly lower than or approximately equal to the ambient temperature according to the standard requirements, and the temperature is controlled by the refrigerator 500 connected in series to the liquid storage tank self-circulation loop. When the controlled temperature is lower than the target temperature of the liquid storage tank 300, the first valve 800 is started and stopped to control the amount of water flowing back from the outer barrel 220 to the liquid storage tank 300 so that the temperature of the liquid storage tank 300 returns to its target temperature.

[0069] When the inner barrel 210 is filled with liquid, the amount of liquid in the inner barrel 210 needs to be controlled, that is, the inner barrel 210 is quantitatively filled with liquid. Specifically, quantitative liquid filling can be achieved by using a measuring cup or by setting a liquid level detection device in the inner barrel 210. When the measuring cup is used, the liquid in the inner barrel 210 can be the liquid in the liquid storage tank 300 passing through the measuring cup to fill the inner barrel 210. When the liquid level detection device is used, the liquid in the inner barrel 210 can be the liquid in the liquid storage tank 300 directly filling the inner barrel 210. The following is an explanation of two embodiments.

[0070] In one embodiment, quantitative liquid inlet is achieved by means of a measuring cup. The inner barrel liquid inlet liquid circuit also includes a third valve and a measuring cup, which are sequentially connected between the first pump 400 and the second valve 900. Specifically, a third valve and a measuring cup are also provided in the pipeline of the inner barrel liquid inlet liquid circuit, and the third valve is connected between the outlet of the first pump 400 and the inlet of the measuring cup, and the outlet of the measuring cup is connected to the inner barrel 210. The first pump 400 is used to pump the liquid in the liquid storage tank 300 to the measuring cup when the second valve 900 disconnects the measuring cup from the inner barrel 210 and the third valve connects the first pump 400 and the measuring cup. The measuring cup is used to measure a fixed amount of liquid to add to the inner barrel 210. Specifically, during the test, the first pump 400 and the third valve are first opened, and the first pump 400 pumps the liquid in the liquid storage tank 300 to the measuring cup, i.e., the measuring cup is filled with liquid, and the measuring cup is used to measure a fixed amount of liquid to be added to the inner barrel 210, i.e., when the liquid in the measuring cup reaches the target amount, the third valve is closed, and the second valve 900 is opened, and the liquid in the measuring cup flows into the inner barrel 210. The measuring cup can be used to conveniently measure a fixed amount of liquid, and the specific fixed amount value can be controlled accordingly according to the scale of the measuring cup, or can be adjusted by replacing measuring cups of different volumes.

[0071] In some embodiments, the height of the measuring cup is higher than the height of the inner barrel 210, so that when the second valve 900 connects the measuring cup with the inner barrel 210, a fixed amount of liquid in the measuring cup flows into the inner barrel 210. By arranging the measuring cup above the inner barrel 210, when the second valve 19 is opened to connect the measuring cup with the inner barrel 210, the liquid in the measuring cup can automatically flow into the inner barrel 210 under the action of its own gravity. As set above, the liquid in the measuring cup can be injected into the inner barrel 210 without setting a power component. In other embodiments, a liquid pump can also be set between the measuring cup and the inner barrel 210 to pump the liquid in the measuring cup to the inner barrel 210.

[0072] In some embodiments, the measuring cup is provided with an overflow port, and the overflow port of the measuring cup is connected to the liquid storage tank 300. During testing, the third valve is opened, and the liquid in the liquid storage tank 300 enters the measuring cup until the measuring cup is full, and the excess liquid overflows back to the liquid storage tank 300. At the same time, the first valve 800 can be controlled to open so that the liquid in the liquid storage tank 300 enters the outer barrel 220 to keep the outer barrel 220 full. By setting the overflow port, the measuring cup can directly realize quantitative control by overflowing the corresponding amount of liquid in the measuring cup when adding liquid.

[0073] In other embodiments, quantitative liquid inlet is achieved by providing a liquid level detection device in the inner barrel 210. This embodiment is different from the above-mentioned quantitative liquid inlet by means of a measuring cup. It does not need to provide a measuring cup in the inner barrel liquid inlet liquid path. Instead, a liquid level detection device is provided in the inner barrel 210. The liquid level detection device is used to detect the liquid level in the inner barrel 210. The second valve 900 is used to disconnect the first pump 400 from the inner barrel 210 when the liquid level detection device detects that the liquid level in the inner barrel 210 reaches a preset liquid level. That is, by providing a liquid level detection device, the liquid level in the inner barrel 210 can be detected. When the liquid level reaches the preset liquid level, it indicates that the amount of liquid in the inner barrel 210 reaches the corresponding quantitative amount, and the second valve 900 can be closed to stop the liquid inlet. The provision of the liquid level detection device further simplifies the structure of the inner barrel liquid inlet liquid path. The liquid level detection device can specifically be a probe.

[0074] In some embodiments, the outer barrel 220 is provided with an overflow port, and the overflow port of the outer barrel 220 is connected to the liquid storage tank 300. Specifically, the overflow port of the outer barrel 220 is connected to the liquid storage tank 300 through an overflow pipe. By setting the overflow port in the outer barrel 220, when the outer barrel 220 is filled with liquid, the liquid in the liquid storage tank 300 is pumped to the outer barrel 220 by the action of the first pump 400 until the outer barrel 220 is full of liquid and overflows back to the liquid storage tank 300. As set above, the outer barrel 220 can be directly filled with liquid when adding liquid. Specifically, the first valve 800 is used for the outer barrel 220 to fill with liquid, and the outer barrel 220 is returned to the liquid storage tank 300 through the overflow pipe of the outer barrel 220 after the liquid is full, and no other valves are set for the outer barrel 220 to fill with water.

[0075] In some embodiments, the inner barrel 210 is provided with a drain valve, which is connected to the liquid storage tank 300 through a drain pump 910. The drain valve is used to connect or disconnect the inner barrel 210 and the drain pump 910. The drain pump 910 is used to pump the liquid in the inner barrel 210 to the liquid storage tank 300 when the drain valve is opened. By setting the drain valve in the inner barrel 210 and cooperating with the drain pump 910 to drain the inner barrel 210, after the test is completed, the drain pump 910 can be turned on and the drain valve can be opened, so that the drain pump 910 pumps the liquid in the inner barrel 210 back to the liquid storage tank 300. The liquid in the liquid storage tank 300 can be temperature-controlled through the liquid storage tank self-circulation loop to meet the next test requirements. Specifically, the drain pump 910 can use a diaphragm pump, that is, the liquid cannot circulate when the diaphragm pump is not turned on, and the liquid can circulate from the inner barrel 210 to the liquid storage tank 300 after starting.

[0076] In some embodiments, the first valve 800 and the second valve 900 are both two-position two-way solenoid valves, and specifically can be normally closed two-position two-way solenoid valves. Taking the first valve 800 as an example, the two ports of the first valve 800 are connected to the first pump 400 and the outer barrel 220 respectively. When the first valve 800 is placed in the first position, the two ports of the first valve 800 are disconnected, so that the first pump 400 and the outer barrel 220 are disconnected; when the first valve 800 is placed in the second position, the two ports of the first valve 800 are connected, so that the first pump 400 and the outer barrel 220 are connected. The connection of the second valve 900 is similar to that of the first valve 800, and will not be repeated here. The two-position two-way solenoid valve is used, and the structure is simple, and one solenoid valve can realize on-off control. In addition, the solenoid valve can be connected to the controller to facilitate automatic control. In other embodiments, the first valve 800 and the second valve 900 can also use a solenoid valve group equivalent to the two-position two-way solenoid valve.

[0077] In some embodiments, the first pump 400 and the second pump 600 are both magnetic circulation pumps. When the magnetic circulation pump is not turned on, it can flow in both directions.

[0078] When the above oxygen bomb calorimeter is used, the temperature control method includes:

[0079] The first pump 400 and the refrigerator 500 are turned on to allow the liquid in the liquid storage tank 300 to circulate in the liquid storage tank self-circulation loop and be cooled to a first set temperature, wherein the first set temperature is lower than room temperature;

[0080] The first valve 800 connects the first pump 400 and the outer barrel 220. The first pump 400 is turned on to pump the liquid in the liquid storage tank 300 to the outer barrel 220. When the liquid in the outer barrel 220 reaches a preset amount, the first valve 800 disconnects the first pump 400 and the outer barrel 220 to isolate the outer barrel 220 from the liquid storage tank 300.

[0081] The heater 700 and the second pump 600 are turned on to allow the liquid in the outer barrel 220 to circulate in the outer barrel self-circulation loop and be heated to a second set temperature, wherein the second set temperature is higher than the room temperature;

[0082] The first pump 400 is turned on, the first valve 800 disconnects the first pump 400 from the outer barrel 220 , the second valve 900 connects the first pump 400 to the inner barrel 210 , and the first pump 400 pumps a fixed amount of liquid in the liquid storage tank 300 to the inner barrel 210 .

[0083] Before the test, when it is necessary to cool the liquid in the liquid storage tank 300, the refrigerator 500 is turned on, and the liquid storage tank self-circulation loop realizes temperature control of the liquid in the liquid storage tank 300, so that it is reduced to the first set temperature. The specific size of the first set temperature can be set as needed, and is not specifically limited here. Of course, when the temperature of the liquid storage tank 300 meets the first set temperature, the above temperature control step is not required. After the temperature of the liquid storage tank 300 reaches the first set temperature, the first valve 800 connects the liquid storage tank 300 and the outer barrel 220, and the liquid in the liquid storage tank 300 is pumped to the outer barrel 220 through the first pump 400. When the liquid in the outer barrel 220 reaches a preset amount, the first valve 800 disconnects the first pump 400 and the outer barrel 220, so that the liquid storage tank 300 is disconnected from the outer barrel 220. Specifically, the preset amount of liquid in the outer barrel 220 may be the amount of liquid in the outer barrel 220 corresponding to the height of the overflow port of the outer barrel 220, that is, the excess liquid in the outer barrel 220 flows back to the liquid storage tank 300 through the overflow port, so that the liquid in the outer barrel 220 is quantitative. After the outer barrel 220 is filled with liquid, when the liquid in the outer barrel 220 needs to be heated, the heater 700 is turned on, and the outer barrel self-circulation loop realizes temperature control of the liquid in the outer barrel 220, so that it rises to the second set temperature. The specific value of the second set temperature can be set as needed, and is not specifically limited here.

[0084] After the outer barrel 220 is filled with liquid or while the outer barrel 220 is filled with liquid, the inner barrel 210 can be filled with liquid, that is, the second valve 900 connects the liquid storage tank 300 and the inner barrel 210, and the liquid in the liquid storage tank 300 is pumped to the inner barrel 210 by the first pump 400, and the inner barrel 210 is quantitatively filled with liquid through the liquid level sensor provided in the inner barrel 210 or the measuring cup provided in conjunction with the inner barrel 210. After the inner barrel 210 is filled with liquid, the corresponding test can be performed.

[0085] After the test is completed, the liquid in the inner barrel 210 can flow back to the liquid storage tank 300 through the drain valve, and the temperature of the liquid in the liquid storage tank 300 increases accordingly. If necessary, the refrigerator 500 can be turned on to control the temperature of the liquid in the liquid storage tank 300 through the self-circulation loop of the liquid storage tank, so that it can be lowered to the first set temperature again for the next test.

[0086] In the liquid circuit temperature control method, both the outer barrel 220 and the liquid storage tank 300 can be self-circulating and temperature controlled, that is, the two can achieve independent temperature control and can be controlled at different target temperatures. During the test, the first valve 800 disconnects the connection between the first pump 400 and the outer barrel 220, that is, the outer barrel 220 is completely isolated from the inner barrel 210, and the outer barrel 220 does not participate in the liquid storage tank 300 and the inner barrel 210, so that the liquid circuit isolation and independent temperature control of the outer barrel 220 are achieved, so that the test will not be affected. After the test is completed, the liquid with the increased temperature of the inner barrel 210 only returns to the liquid storage tank 300, which does not affect the temperature control of the outer barrel 220, thereby improving the test efficiency. In addition, the liquid circuit structure is simple, and only one refrigerator 500 and one heater 700 are required to achieve independent temperature control of the outer barrel 220 and the liquid storage tank 300. The first valve 800 and the second valve 900 cooperate to achieve the isolation of the outer barrel 220, the number of parts is small, and the connection structure is simple, thereby reducing the preparation and maintenance costs. In addition, the first valve 800 can be started and stopped in combination with the first pump 400 to replenish the low-temperature liquid in the liquid storage tank 300 into the outer barrel 220, or the higher-temperature liquid in the outer barrel 220 can be replenished into the liquid storage tank 300 to supplement the temperature control capabilities of the outer barrel 220 and the liquid storage tank 300.

[0087] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oxygen bomb calorimeter, characterized in that include: A base (100), the base (100) being rectangular, and the base (100) being divided into four quadrants by a rectangular coordinate system perpendicular to the sides, namely, a first quadrant (110), a second quadrant (120), a third quadrant (130), and a fourth quadrant (140); A liquid storage tank (300) is disposed on the base (100), wherein more than 50% of the projected area of ​​the liquid storage tank (300) in the projection of the base (100) is located in the first quadrant (110), and the projected area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant; A measuring bucket (200) is arranged on the base (100); more than 50% of the projection area of ​​the measuring bucket (200) in the projection of the base (100) is located in the third quadrant (130), and the projection area projected to other quadrants occupies no more than 50% of the area of ​​the quadrant.

2. The oxygen bomb calorimeter according to claim 1, characterized in that: The first quadrant area (110) and the second quadrant area (120) are distributed along the length direction of the base (100), and the third quadrant area (130) and the fourth quadrant area (140) are distributed along the width direction of the base (100); The projection of the measuring bucket (200) on the base (100) is entirely located in the first quadrant (110), or is partially located in the first quadrant (110) and partially located in the fourth quadrant (140); The projection of the liquid storage tank (300) on the base (100) is located in the third quadrant area (130), or is partially located in the third quadrant area (130) and partially located in the second quadrant area (120).

3. The oxygen bomb calorimeter according to claim 2, characterized in that: At least 80% of the projection area of ​​the measuring bucket (200) on the base (100) is located in the first quadrant (110); At least 80% of the projection area of ​​the liquid storage tank (300) on the base (100) is located in the third quadrant (130).

4. The oxygen bomb calorimeter according to claim 1, characterized in that: An interface for communicating the measuring barrel (200) with the liquid storage tank (300) is arranged on a side of the measuring barrel (200) facing the fourth quadrant area (140); An interface for communicating the liquid storage tank (300) with the measuring barrel (200) is arranged on a side of the liquid storage tank (300) facing the second quadrant.

5. The oxygen bomb calorimeter according to claim 1, characterized in that: The fourth quadrant area (140) is provided with a touch screen.

6. The oxygen bomb calorimeter according to claim 1, characterized in that: It also includes a measuring barrel (200) cover provided on the measuring barrel (200) and a liquid storage tank (300) cover provided on the liquid storage tank (300), wherein a projection of the liquid storage tank (300) cover on the base (100) is at least located in the first quadrant (110); The projection of the measuring bucket (200) covered on the base (100) is at least located in the third quadrant (130).

7. The oxygen bomb calorimeter according to claim 6, characterized in that: It also includes a first lifting drive device for driving the lid of the measuring bucket (200) to lift up and down, the first lifting drive device being arranged in the second quadrant (120); and / or, It also includes a second lifting drive device for driving the liquid storage barrel cover to lift up and down, and the second lifting drive device is arranged in the fourth quadrant area (140).

8. The oxygen bomb calorimeter according to any one of claims 1 to 7, characterized in that: The measuring barrel (200) comprises an outer barrel (220) and an inner barrel (210) which are nested together. The oxygen bomb calorimeter comprises a measuring liquid circuit, and the measuring liquid circuit comprises: A liquid storage tank self-circulation loop comprises the liquid storage tank (300), a first pump (400) and a refrigerator (500), wherein the first pump (400) and the refrigerator (500) are connected between an outlet and an inlet of the liquid storage tank (300), and the refrigerator (500) is used to cool the liquid in the liquid storage tank (300) to below room temperature; The outer barrel self-circulation loop comprises the outer barrel (220), a second pump (600) and a heater (700), wherein the second pump (600) and the heater (700) are connected to the inlet and outlet of the outer barrel (220), and the heater (700) is used to heat the liquid in the outer barrel (220) to above room temperature; an outer barrel liquid inlet circuit, comprising the first pump (400) and a first valve (800) connected between the first pump (400) and an inlet of the outer barrel (220), wherein the first valve (800) is used to connect or disconnect the first pump (400) and the outer barrel (220), and when the first pump (400) is connected to the outer barrel (220), the first pump (400) is used to pump the liquid in the liquid storage tank (300) into the outer barrel (220); The inner barrel liquid inlet liquid circuit is used to add a fixed amount of liquid in the liquid storage tank (300) to the inner barrel (210), and the inner barrel liquid inlet liquid circuit comprises the first pump (400) and a second valve (900) connected between the first pump (400) and the inlet of the inner barrel (210), the second valve (900) is used to connect or disconnect the first pump (400) and the inner barrel (210), and when the first pump (400) is connected to the inner barrel (210), the first pump (400) is used to pump the liquid in the liquid storage tank (300) into the inner barrel (210).

9. The oxygen bomb calorimeter according to claim 8, characterized in that: The inner barrel liquid inlet path further comprises a third valve and a measuring cup, wherein the third valve and the measuring cup are sequentially connected between the first pump (400) and the second valve (900); The first pump (400) is used to pump the liquid in the liquid storage tank (300) to the measuring cup when the second valve (900) disconnects the measuring cup from the inner barrel (210) and the third valve connects the first pump (400) to the measuring cup, and the measuring cup is used to measure a fixed amount of the liquid to add to the inner barrel (210).

10. The oxygen bomb calorimeter according to claim 8, characterized in that: A liquid level detection device is provided in the inner barrel (210), the liquid level detection device being used to detect the liquid level in the inner barrel (210), and the second valve (900) being used to disconnect the first pump (400) from the inner barrel (210) when the liquid level detection device detects that the liquid level in the inner barrel (210) reaches a preset liquid level.

Images