CN218674814U - Sample pool for adiabatic calorimetry - Google Patents

Abstract

The utility model relates to a sample cell for adiabatic calorimetry, this sample cell for adiabatic calorimetry includes cell body, mixing control pole, guiding tube and ventilation assembly, and the cell body has reaction chamber, the sample that is located the reaction chamber top bears the weight of the chamber and sets up the sample supporting part between reaction chamber and sample bearing the weight of the chamber, and the sample supporting part is provided with the intercommunicating pore that communicates reaction chamber and sample bearing the weight of the chamber, and the top of cell body is provided with the getting and putting mouth that communicates with sample bearing the weight of the chamber, gets and puts the mouth department and is provided with seal assembly; the bottom of the mixing control rod extends into the tank body, and a sealing part is arranged at the bottom of the mixing control rod and used for controlling the opening and closing of the communicating hole; the guide tube runs through the sample supporting part, and the subassembly of ventilating includes bears the breather pipe of chamber intercommunication and sets up the valve on the breather pipe with the sample, and this a sample cell for adiabatic calorimetric can change the gaseous environment that the material mixes, guarantees reaction system gaseous environment's stability, improves the reliability in utilization.

Description

Sample pool for adiabatic calorimetry

Technical Field

The utility model relates to an adiabatic calorimetric technical field especially relates to a sample cell for adiabatic calorimetric.

Background

At higher temperature, the anode and cathode materials of the lithium ion battery can be decomposed, and the battery can generate heat automatically, so that thermal runaway is caused. For the thermal stability evaluation of lithium ion battery materials, a differential scanning calorimeter is generally used, but the differential scanning calorimeter has less material consumption, the test result is used for reaction amplification, and the deviation is larger. The adiabatic acceleration calorimeter has more samples for testing, but the testing process cannot realize mixing of positive and negative electrode materials at a specified temperature, cannot adjust the internal atmosphere of the reaction tank, and has great instability of a reaction system, so that the use reliability is low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a be used for adiabatic calorimetric sample cell, this be used for adiabatic calorimetric sample cell can change the gaseous environment that the material mixes, guarantees reaction system gaseous environment's stability, improves the reliability of using.

(II) technical scheme

To achieve the above object, an embodiment of the present application provides a sample cell for adiabatic calorimetry, including: the cell body is provided with a reaction cavity, a sample bearing cavity positioned above the reaction cavity and a sample supporting part arranged between the reaction cavity and the sample bearing cavity, the sample supporting part is provided with a communicating hole communicated with the reaction cavity and the sample bearing cavity, the top of the cell body is provided with a taking and placing opening communicated with the sample bearing cavity, and the taking and placing opening is provided with a sealing component; the bottom of the mixing control rod extends into the tank body, and a sealing part is arranged at the bottom of the mixing control rod and used for controlling the opening and closing of the communication hole; a guide tube penetrating the sample support part to communicate the reaction chamber with the sample-carrying chamber; and the ventilation assembly comprises a ventilation pipe communicated with the sample bearing cavity and a valve arranged on the ventilation pipe.

In a possible implementation manner, the vent assembly further includes a pressure gauge disposed on the vent pipe.

In a possible implementation manner, one end of the vent pipe, which is far away from the tank body, is provided with a vent hole for connecting an external air source or a negative pressure pump.

In a possible implementation manner, the cell body comprises a spherical part and a straight pipe part, the spherical part is connected with the straight pipe part through a thread, the reaction cavity is arranged inside the spherical part, and the sample bearing cavity is arranged inside the straight pipe part; the sample supporting part is located in the straight tube part, the lower half area of the communicating hole is of a conical structure with a small upper part and a large lower part, and the sealing part is of a circular truncated cone structure with a small upper part and a large lower part.

In a possible implementation manner, the upper half area of the communication hole is a funnel structure with a large upper part and a small lower part, and the bottom of the funnel structure is connected with the top of the conical structure.

In one possible implementation, the sample cell for adiabatic calorimetry further comprises a thermocouple penetrating through the sealing assembly and the guide tube, and a sensing end of the thermocouple protrudes into the reaction chamber.

In one possible implementation, the sample cell for adiabatic calorimetry further comprises an agitation assembly, the agitation assembly comprising: the stirring rod is connected with the bottom of the mixing control rod; and the foldable stirring paddle is arranged at the bottom of the stirring rod and is positioned in the reaction cavity.

In one possible implementation, the seal assembly includes: a bottom nut provided on an outer peripheral side of the straight tube portion; the top nut is covered at the taking and placing opening and is connected with the bottom nut through threads; the sealing gasket is arranged in the top nut and is abutted against the top of the straight pipe part; and the sealing ring is arranged in the bottom nut and is abutted against the bottom of the top nut.

In a possible implementation, the diameter of the inner ring of the sealing ring is matched with the outer diameter of the straight pipe part, and the diameter of the outer ring of the sealing ring is matched with the inner diameter of the bottom nut side.

In a possible implementation manner, the inner diameter of the guide tube is larger than the diameter of the thermocouple, and a buckle is arranged on the outer side of the thermocouple and is abutted against the top of the sample support part.

(III) advantageous effects

Compared with the prior art, the utility model provides a sample cell for adiabatic calorimetric possesses following beneficial effect: this a sample cell for adiabatic calorimetry, cathode material and anode material deposit respectively with reaction chamber and sample bear the weight of the chamber in, and reaction chamber and sample bear the weight of the chamber and keep the intercommunication through the guiding tube, it is sealed to get the mouth of putting through seal assembly with the cell body, make the inside of cell body form a relatively inclosed space, can realize mixing the sample under appointed temperature, through connecting negative pressure equipment with the breather pipe, open the valve, can take away the air in reaction chamber and sample bear the weight of the intracavity, close the valve, communicate outside air supply with the breather pipe, open the valve, can fill specific gas into reaction chamber and sample and bear the weight of the intracavity, thereby change the gaseous environment that the material mixes, guarantee the stability of reaction system gaseous environment, and the reliability of use is improved.

Drawings

Fig. 1 is a schematic structural diagram of a sample cell for adiabatic calorimetry provided in an embodiment of the present application;

FIG. 2 illustrates a partially enlarged schematic structural view of a seal assembly and a vent assembly provided in an embodiment of the present application;

FIG. 3 is a partial enlarged schematic structural view of a communication hole and a sealing part provided in an embodiment of the present application;

in the drawings, the reference numbers:

1. a tank body; 11. a reaction chamber; 12. a sample-bearing chamber; 13. a sample support; 14. a communicating hole; 141. a tapered structure; 142. a funnel structure; 15. a seal assembly; 151. a bottom nut; 152. a top nut; 153. a gasket; 154. a seal ring; 16. a spherical portion; 17. A straight tube portion;

2. a mixing control lever; 21. a sealing part;

3. a guide tube;

4. a vent assembly; 41. a breather pipe; 42. a valve; 43. a pressure gauge; 44. a vent;

5. a thermocouple;

6. a stirring assembly; 61. a stirring rod; 62. the stirring paddle can be folded;

7. and (5) buckling.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present application provides a sample cell for adiabatic heat measurement, including:

the cell body 1 is provided with a reaction cavity 11, a sample bearing cavity 12 positioned above the reaction cavity 11 and a sample supporting part 13 arranged between the reaction cavity 11 and the sample bearing cavity 12, the sample supporting part 13 is provided with a communicating hole 14 communicating the reaction cavity 11 and the sample bearing cavity 12, the top of the cell body 1 is provided with a taking and placing opening communicated with the sample bearing cavity 12, and the taking and placing opening is provided with a sealing component 15;

the bottom of the mixing control rod 2 extends into the tank body 1, and a sealing part 21 is arranged at the bottom of the mixing control rod 2 and used for controlling the opening and closing of the communicating hole 14;

a guide tube 3 penetrating the sample support part 13 to communicate the reaction chamber 11 with the sample-holding chamber 12; and

vent assembly 4, vent assembly 4 includes a vent tube 41 in communication with sample-holding chamber 12 and a valve 42 disposed on vent tube 41.

In this application, cathode material and anode material deposit respectively with reaction chamber 11 and sample bear the weight of in the chamber 12, and reaction chamber 11 and sample bear the weight of the chamber 12 and keep the intercommunication through guide tube 3, it is sealed to get the mouth of putting through seal assembly 15 with cell body 1, make the inside of cell body 1 form a relatively inclosed space, through connecting negative pressure equipment with breather pipe 41, open valve 42, can take away the air in reaction chamber 11 and sample bear the weight of the chamber 12, close valve 42, communicate outside air supply with breather pipe 41, open valve 42, can fill specific gas in reaction chamber 11 and sample bear the weight of the chamber 12, thereby change the gaseous environment of material mixture, guarantee reaction system gaseous environment's stability, improve the reliability of use.

Specifically, the whole reaction process can be kept from contacting with air, and the stability of a reaction system is ensured.

In some embodiments, vent assembly 4 further includes a pressure gauge 43 disposed on vent tube 41.

In this application, can monitor the atmospheric pressure in the cell body 1 through manometer 43 to the stability of material gas mixture environment is guaranteed to the gas volume that lets in the control cell body 1.

In some embodiments, the end of the vent pipe 41 away from the tank body 1 is provided with a vent 44 for connecting an external air source or a negative pressure pump.

Specifically, the vent 44 is connected to a negative pressure pump for pumping away air in the tank body 1, and the vent 44 is connected to an external air source for introducing air into the tank body 1. The external gas source can be Ar, N2, CO2, H2, O2, etc.

In some embodiments, the cell body 1 comprises a spherical part 16 and a straight pipe part 17, the spherical part 16 is connected with the straight pipe part 17 through a screw thread, the spherical part 16 is internally provided with a reaction cavity 11, and the straight pipe part 17 is internally provided with a sample bearing cavity 12; the sample support portion 13 is positioned in the straight tube portion 17, the lower half region of the communication hole 14 has a tapered structure 141 having a small top and a large bottom, and the seal portion 21 has a circular truncated cone structure having a small top and a large bottom.

In this application, the top of spherical portion 16 is provided with the connecting pipe that is used for connecting straight tube portion 17, is connected with straight tube portion 17 through the connecting pipe, sets up cell body 1 into split type structure for assemble mixing control rod 2 with straight tube portion 17, because the sealing 21 of mixing control rod 2 is the round platform structure, and the intercommunication hole 14 that realizes closing with the intercommunication hole 14 butt of big end down, sealing 21 is located the below of intercommunication hole 14 and is greater than the minimum internal diameter of intercommunication hole 14.

In some embodiments, the upper half area of the communication hole 14 is a funnel structure 142 with a large top and a small bottom, and the bottom of the funnel structure 142 is connected with the top of the cone structure 141.

In this application, the first half region of intercommunicating pore 14 is funnel structure 142 for bear the sample, funnel structure 142 is convenient to support the sample, and makes things convenient for the sample to bear the material in chamber 12 and fully slides in reaction chamber 11 through intercommunicating pore 14, avoids the material to bear the interior residue of chamber 12 at the sample, and then guarantees the accuracy of experiment.

In some embodiments, the sample cell for adiabatic calorimetry further comprises a thermocouple 5 extending through the seal assembly 15 and the guide tube 3, the sensing end of the thermocouple 5 extending into the reaction chamber 11.

In this application, thermocouple 5 stretches into reaction chamber 11 through guide tube 3 in, and is concrete, and sample supporting part 13 has certain height, and guide tube 3 is vertical setting, conveniently passes guide tube 3 with thermocouple 5 for guide tube 3 can effectively communicate reaction chamber 11 and sample and bear chamber 12, can prevent that the sample from bearing the material in the chamber 12 and getting into in the guide tube 3 simultaneously.

In some embodiments, the sample cell for adiabatic calorimetry further comprises an agitation assembly 6, the agitation assembly 6 comprising: a stirring rod 61 and a foldable stirring paddle 62, wherein:

the stirring rod 61 is connected to the bottom of the mixing control rod 2.

The foldable stirring paddle 62 is disposed at the bottom of the stirring rod 61, and the foldable stirring paddle 62 is located in the reaction chamber 11.

In this application, can drive puddler 61 and collapsible stirring rake 62 through rotating mixing control pole 2 and rotate to can stir the material in the reaction chamber 11, make anodal material and negative electrode material fully contact, guarantee to measure the thermal-generating precision of adiabatic contact.

Specifically, the stirring rod 61 is provided with a mounting hole for fixing the foldable stirring paddle 62, the foldable stirring paddle 62 is foldable with a torsion spring through a fixing screw, or the foldable stirring paddle 62 is foldable through adopting an elastic material.

In some embodiments, the seal assembly 15 includes: bottom nut 151, top nut 152, gasket 153 and sealing ring 154, wherein:

the bottom nut 151 is provided on the outer peripheral side of the straight tube portion 17.

The top nut 152 is mounted at the access opening and is threadedly engaged with the bottom nut 151.

The packing 153 is disposed in the top nut 152 and abuts against the top of the straight tube portion 17.

The sealing ring 154 is disposed within the bottom nut 151 and abuts the bottom of the top nut 152.

In the application, bottom nut 151 is fixed to be set up in the periphery side of straight tube portion 17, internal thread structure is provided with at the internal surface of bottom nut 151, top nut 152 lid dress is in the top of getting put the mouth, top nut 152 inserts in bottom nut 151, and the periphery side of top nut 152 sets up in the external thread structure with internal thread structure screw-thread fit, through rotatory top nut 152, make the both sides of sealed pad 153 respectively with the interior roof of top nut 152 and the top butt of straight tube portion 17, carry out first sealed, simultaneously the both sides of sealing ring 154 respectively with the interior diapire of bottom nut 151 and the bottom butt of top nut 152, carry out the second and seal, guarantee to get the sealed effect of putting the mouth department, and easy and simple to handle.

In some embodiments, the inner ring diameter of the sealing ring 154 matches the outer diameter of the straight tube portion 17, and the outer ring diameter of the sealing ring 154 matches the inner diameter of the bottom nut 151 side.

In this application, when carrying out the evacuation to cell body 1 inside, get and put the mouth and have great pressure difference, sealing ring 154 can be paved with the interior diapire of whole bottom nut 151, and sealing ring 154's inner circle and straight tube portion 17's external diameter butt further guarantee sealed effect moreover.

In some embodiments, the inner diameter of the guide tube 3 is larger than the diameter of the thermocouple 5, and the outer side of the thermocouple 5 is provided with a catch 7, the catch 7 abutting the top of the sample support 13.

In this application, thermocouple 5's diameter is less than guide tube 3's internal diameter, conveniently pass guide tube 3 with thermocouple 5, guarantee simultaneously that guide tube 3 can effectively communicate reaction chamber 11 and sample and bear chamber 12, block at the top of sample supporting part 13 through buckle 7, fix thermocouple 5, guarantee that thermocouple 5 inserts reaction chamber 11 fixed depth, it is specific, buckle 7 slides and sets up in thermocouple 5's periphery side, and have certain frictional force between thermocouple 5, can slide along thermocouple 5's length direction buckle 7, and then adjust the degree of depth that thermocouple 5 inserted in reaction chamber 11.

This a sample cell for adiabatic calorimetry, cathode material and anode material deposit respectively with reaction chamber 11 and sample bear the weight of in the chamber 12, and reaction chamber 11 and sample bear the weight of the chamber 12 and keep the intercommunication through guide tube 3, get the mouth through seal assembly 15 with getting of cell body 1 and seal, make the inside of cell body 1 form a relatively inclosed space, through connecting negative pressure equipment with breather pipe 41, open valve 42, can take away the air in reaction chamber 11 and sample bear the weight of the chamber 12, close valve 42, communicate outside air supply with breather pipe 41, open valve 42, can fill specific gas in reaction chamber 11 and sample bear the weight of the chamber 12, thereby change the gaseous environment of material mixture, guarantee the stability of reaction system gaseous environment, improve the reliability of use.

In this application, can mix the material and go on in the negative pressure state, also can go on in specific gas environment, there is not pressure difference moreover between reaction chamber 11 and the sample bearing cavity 12, can guarantee that reaction chamber 11 and sample bearing cavity 12 interior material temperature, pressure are unanimous for mixing control rod 2 can not receive extra pressure and take place uncontrollable displacement. Through stirring the sample after mixing for the sample misce bene, the reaction is more homogeneous, not only can measure the temperature variation in the reaction, can also detect the atmospheric pressure change in the reaction process through manometer 43.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "on 8230" \ 8230on "," on 82303030, and "on 82308230; \ 8230on" \ 8230, and "on 8230;" on 8230, should be interpreted in the broadest sense in this disclosure, such that "on 8230;" on not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above 8230or" above 8230 "\8230"; not only includes the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A sample cell for adiabatic calorimetry, comprising:

the cell body (1) is provided with a reaction cavity (11), a sample bearing cavity (12) positioned above the reaction cavity (11) and a sample supporting part (13) arranged between the reaction cavity (11) and the sample bearing cavity (12), the sample supporting part (13) is provided with a communication hole (14) for communicating the reaction cavity (11) and the sample bearing cavity (12), the top of the cell body (1) is provided with a taking and placing opening communicated with the sample bearing cavity (12), and the taking and placing opening is provided with a sealing component (15);

the bottom of the mixing control rod (2) extends into the tank body (1), and a sealing part (21) is arranged at the bottom of the mixing control rod (2) and used for controlling the opening and closing of the communication hole (14);

a guide tube (3) penetrating the sample support part (13) to communicate the reaction chamber (11) with the sample-carrying chamber (12); and

a vent assembly (4), the vent assembly (4) comprising a vent tube (41) in communication with the sample-carrying chamber (12) and a valve (42) disposed on the vent tube (41).

2. A sample cell for adiabatic calorimetry according to claim 1, characterized in that the vent assembly (4) further comprises a pressure gauge (43) arranged on the vent tube (41).

3. A sample cell for adiabatic calorimetry according to claim 1, characterized in that an end of the vent pipe (41) remote from the cell body (1) is provided with a vent port (44) for connecting an external gas source or a negative pressure pump.

4. A sample cell for adiabatic calorimetry according to claim 1, wherein the cell body (1) comprises a spherical portion (16) and a straight tube portion (17), the spherical portion (16) is in threaded connection with the straight tube portion (17), the interior of the spherical portion (16) is provided with the reaction chamber (11), and the interior of the straight tube portion (17) is provided with the sample-carrying chamber (12);

the sample support part (13) is positioned in the straight pipe part (17), the lower half area of the communication hole (14) is a conical structure (141) with a small upper part and a large lower part, and the sealing part (21) is a circular truncated cone structure with a small upper part and a large lower part.

5. A sample cell for adiabatic calorimetry according to claim 4, characterized in that the upper half area of the communication hole (14) is a funnel structure (142) with a large top and a small bottom, and the bottom of the funnel structure (142) is connected with the top of the cone structure (141).

6. A sample cell for adiabatic calorimetry according to claim 1, characterized in that it further comprises a thermocouple (5) extending through the sealing assembly (15) and the guide tube (3), the sensing end of the thermocouple (5) protruding into the reaction chamber (11).

7. A sample cell for adiabatic calorimetry according to claim 1, characterized in that it further comprises an agitation assembly (6), the agitation assembly (6) comprising:

a stirring rod (61) connected with the bottom of the mixing control rod (2); and

the foldable stirring paddle (62) is arranged at the bottom of the stirring rod (61), and the foldable stirring paddle (62) is positioned in the reaction cavity (11).

8. A sample cell for adiabatic calorimetry according to claim 4, characterized in that the sealing assembly (15) comprises:

a bottom nut (151) provided on the outer peripheral side of the straight tube portion (17);

the top nut (152) is covered at the taking and placing opening and is connected with the bottom nut (151) through threads;

a gasket (153) disposed in the top nut (152) and abutting against the top of the straight tube portion (17); and

and the sealing ring (154) is arranged in the bottom nut (151) and is abutted against the bottom of the top nut (152).

9. A cuvette for adiabatic calorimetry according to claim 8, wherein an inner ring diameter of the sealing ring (154) is matched with an outer diameter of the straight tube portion (17), and an outer ring diameter of the sealing ring (154) is matched with an inner diameter of the bottom nut (151) side.

10. A sample cell for adiabatic calorimetry according to claim 6, characterized in that the inner diameter of the guide tube (3) is larger than the diameter of the thermocouple (5), and that the outer side of the thermocouple (5) is provided with a catch (7), which catch (7) abuts the top of the sample support (13).

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