Sample container system

Abstract

The invention relates to a sample container system (1) for a pressure container (100), comprising: a sample container (2) having a sample container cavity (3) for accommodating a sample (P) and an edge (21) delimiting an opening (22); and a lid (4) for closing the opening (22). The lid (4) in turn comprises: an insertion portion (41) which can be inserted into the sample container (2) through the opening (22) and by means of which the lid (4) can be moved axially relative to the sample container (2); a flange (43) extending radially outward from the insertion portion (41), which flange can rest on the edge (21) by means of a support surface (44) when the insertion portion (41) is inserted into the sample container (2); and a groove (46) extending axially on an outer surface (42) of the insertion portion (41) and then radially outwardly on a support surface (44) of the flange such that the sample container cavity (3) is in fluid communication with the surroundings (U) of the sample container system (1) via the groove (46) when the insertion portion (41) is inserted into the sample container (2) and the flange (43) rests on the edge (21) via the support surface (44). The invention also relates to a pressure vessel (100) equipped with a sample vessel system (1) according to the invention.

Description

Technical Field

[0001] The present invention relates to a sample container system for use in a pressure vessel, and a pressure vessel equipped with such a sample container system. Background Art

[0002] For purposes such as analyzing a sample, it is necessary to subject the sample to a pressure reaction. To this end, the sample is placed in a sample container, which is then placed in a pressure vessel to subject it to a chemical and / or physical pressure reaction. The sample container makes it easy to place the sample in the pressure vessel and then remove it easily.

[0003] When a sample is subjected to pressure reaction, the pressure in the sample container may increase, for example due to an exothermic reaction in the sample container. The pressure increase may have adverse effects. For example, a too rapid pressure increase may damage the sample container or lead to other undesirable consequences (such as damage to the sample, distortion of the analysis results, etc.). Summary of the invention

[0004] It is therefore an object of the present invention to overcome the above-mentioned disadvantages and in particular to better regulate the pressure in the sample container.

[0005] This object is achieved by the subject matter of the independent claim. Advantageous developments are the subject matter of the dependent claims.

[0006] According to a first aspect, the present invention relates to a sample container system for use in a pressure vessel. The sample container system comprises: a sample container having a sample container cavity for accommodating a sample and an edge defining an opening; and a cover for closing the opening. The cover comprises: an insertion portion, which can be inserted into the sample container through the opening and through which the cover can be axially moved relative to the sample container; a flange, which extends radially outward from the insertion portion and can rest on the edge through a support surface when the insertion portion is inserted into the sample container; and a groove, which extends axially on the outer surface of the insertion portion and then extends radially outward on the support surface of the flange, so that when the insertion portion is inserted into the sample container and the flange rests on the edge through the support surface, the sample container cavity is in fluid communication with the surrounding environment of the sample container system through the groove.

[0007] With the aid of the sample container system, the pressure in the sample container cavity can be particularly easily adjusted. On the one hand, in the state where the cover is inserted into the sample container via its insertion part, the fluid communication between the sample container system's surroundings (e.g., the gas in the pressure vessel reaction chamber surrounding the sample container system, or the ambient air) and the sample container cavity provided by the groove can supply gas to the sample container cavity (e.g., gas required for the reaction in the sample container cavity, for example, for establishing a predetermined pressure in the sample container cavity, preferably in the range of 10 to 60 bar) or can also discharge gas (e.g., gas generated by the reaction in the sample container cavity) from the sample container. On the other hand, due to the overpressure in the sample container cavity, the insertion part inserted into the sample container can be moved axially through the opening, thereby achieving pressure balance with the surrounding environment. When the insertion part is moved axially through the opening, the groove is also moved through the opening at the same time, thereby at least partially exposing the groove, thereby expanding the opening, through which gas can flow out of the groove. Therefore, if the cover is lifted due to the increased overpressure in the sample container cavity, a larger gas flow can flow out of the sample container cavity through the expanded opening, so that unfavorable pressure changes and / or undesirable high pressures in the sample container cavity can be prevented.

[0008] Thus, there is in particular no risk of damaging components of the sample container system (in particular the sample container and / or the cover) due to a pressure difference between the surroundings of the sample container system and the sample container cavity. Furthermore, by means of such a design of the cover, the pressure in the sample container cavity can be easily adjusted, in particular without adjusting parameters of the pressure vessel in which the sample container system is used (e.g. regulating the pressure in the reaction chamber and / or supplying reaction gases). The cover thus constitutes a so-called self-regulating cover, in other words, a container closure having a valve effect.

[0009] When the insertion part is inserted into the sample container, the cover is preferably movable by axial movement relative to the sample container, at least between a first position and a second position, wherein in the first position at least a part of the recess is covered by the sample container, and in the second position the recess protrudes beyond the edge and is exposed. For example, the cover can be moved from the first position to the second position due to an increase in pressure in the sample container cavity. In the first position, gas preferably flows into the sample container cavity through the recess, in particular in order to achieve a pressure balance between the surrounding environment and the sample container cavity, thereby preventing pressure deformation of the container. In the second position, through the exposed recess part, in particular a larger gas flow can leave the sample container cavity through the recess compared to the first position, so that a pressure balance can also be achieved between the surrounding environment and the sample container cavity, in particular when the pressure in the latter increases (for example due to a chemical reaction). In this way, pressure regulation in the sample container cavity is particularly easy to achieve.

[0010] The sample container preferably extends along the longitudinal axis, and when the insertion part is inserted into the sample container, the part of the groove extending on the outer surface of the insertion part is at least partially parallel to the longitudinal axis. In this way, the groove can be particularly advantageously moved relative to the edge of the sample container, for example essentially vertically. This is particularly advantageous for regulating the pressure in the sample container cavity. In addition, the groove can be arranged particularly easily on the outer surface of the insertion part in this way. The part of the groove extending on the flange support surface is preferably perpendicular to the longitudinal axis of the sample container.

[0011] The groove is preferably designed as a slit. That is, the groove preferably has an elongated shape. The groove is preferably composed of only one or more straight segments. For example, the groove may consist of only two straight segments, wherein the first segment is arranged on the supporting surface of the flange and the second segment is arranged on the outer surface of the insert part.

[0012] The insert part preferably has a bottom surface (ie the side opposite to the top surface of the cover) which defines the sample container cavity when the insert part is inserted into the sample container, and the groove extends from and / or starts from the bottom surface.

[0013] The insert portion may be at least partially cylindrical and / or conical. The insert portion may have a circular (preferably a perfect circular) cross section. Thus, the insert portion preferably has a perimeter defining the cross section, seen in cross section (i.e. a section perpendicular to the longitudinal axis of the insert portion), which perimeter corresponds to a circular (preferably a perfect circular) shape except for the location where the recess is provided.

[0014] The cover can be made at least partially of plastic, which preferably includes PTFE, quartz and / or glass. In this way, the cover is easy to manufacture on the one hand and can withstand the conditions in the sample container cavity (especially physical and / or chemical conditions, such as pressure, chemicals, reactions) well on the other hand.

[0015] When the insertion part is inserted into the sample container and the support surface rests on the edge, the flange is preferably flush with the edge. In other words, the flange preferably does not extend beyond the edge when viewed along the longitudinal axis of the sample container. In this way, the sample container system is particularly compact.

[0016] When the insertion part is inserted into the sample container and the support surface rests on the edge, the portion of the groove extending on the support surface can protrude beyond the edge. In other words, in this inserted state, the groove can extend radially outward more than the edge. Therefore, the groove can easily achieve fluid communication with the surrounding environment.

[0017] The sample container system can be equipped with a covering element (e.g., a covering plate or a lid) which is designed to prevent condensate, in particular condensate in the form of droplets, from entering the groove. For example, a flange (seen from a side view or in a radial direction) can be arranged between the covering element and the edge of the sample container. The covering element can be integrally formed with the lid or can be made separately. In one embodiment, the covering element can be placed on the lid. In addition, the covering element can be designed to prevent condensate from entering the groove of at least another sample container system such as the above structure. The covering element is preferably designed to allow the condensate to flow (e.g., due to gravity) to the edge of the covering element and then flow down at a certain distance from the sample container system (e.g., near the reactor or reactor wall). The covering element can especially prevent the condensate from bringing impurities into the sample container cavity, thereby adversely affecting the sample contained therein. Therefore, the analysis effect of the sample can also be improved by the covering element.

[0018] The sample container system may also be provided with a limiting element, which is used to limit the travel of the cover inserted into the sample container. In other words, the limiting element can be used to ensure that the cover can only be lifted along a defined maximum travel relative to the edge of the sample container. The limiting element can in particular prevent the cover from falling off or getting stuck in the sample container. In addition, the limiting element can be used to define a maximum gap between the flange support surface and the edge of the sample container, thereby determining the maximum opening of the recess.

[0019] According to a second aspect, the present invention relates to a pressure vessel. The pressure vessel is equipped with a sample container system as described above. For example, the pressure vessel can have a reaction chamber as a pressure space for initiating and / or promoting a chemical and / or physical pressure reaction, and the sample container system is arranged in the reaction chamber. One or more sample container systems can be arranged in the pressure vessel, preferably in the reaction chamber. Multiple sample container systems can be placed in a sample container holder (e.g., in the form of a basket). BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described exemplarily below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0021] in:

[0022] Figure 1 is a schematic cross-sectional view of a preferred embodiment of a sample container system according to the present invention, wherein the cover is in a first position;

[0023] Figure 2 yes Figure 1 a schematic cross-sectional view of the illustrated embodiment with the cover in a second position;

[0024] Figure 3is a schematic cross-sectional view of a preferred embodiment of a pressure vessel according to the present invention, wherein a plurality of sample container systems are provided, each sample container system being arranged according to Figure 1 and Figure 2 The preferred embodiment is constituted by. DETAILED DESCRIPTION

[0025] Figure 1 and Figure 2 A sample container system 1 of a preferred embodiment is shown. The sample container system 1 comprises a sample container 2 having a sample container cavity 3 for accommodating a sample P. Optionally, a liquid F (e.g., a solvent) may also be provided in the sample container cavity 3, in which the sample P is dissolved, for example. The sample container cavity 3 may accommodate the sample P and / or the liquid F, and the remaining space of the sample container cavity 3 may be used, for example, to accommodate a gas (e.g., a gas supplied to the sample container cavity 3 and / or a gas generated when a reaction occurs in the sample container cavity 3).

[0026] The sample container 2 has an edge 21 which defines an opening 22. The edge 21 and the opening 22 may be circular. The sample P and / or the liquid F may be delivered into the sample container cavity 3 through the opening 22. Preferably, the sample container 2 has a side wall 23 which defines the sample container cavity 3 and has the edge 21. The sample container 2 may have a bottom 24 from which the side wall 23 extends. The sample container 2 is preferably elongated and therefore preferably extends axially along the longitudinal axis. From a cross section (i.e. a cross section perpendicular to the longitudinal axis of the sample container 2), the sample container 2 may have a circular cross section. The sample container 2 is preferably a reagent bottle.

[0027] The sample container system 1 further comprises a cover 4, which is designed to close the opening 22. The cover 4 has an insertion portion 41 with an outer surface 42. The cover can be inserted into the sample container 2 by means of the insertion portion 41, in particular through the opening 22, in particular inserted therein. In this inserted state, at least a portion of the outer surface 42 is in contact with the sample container 2, in particular with the inner surface of the sample container 2. The insertion portion 41 and the sample container 2 preferably form an interference fit. That is, in the state where the insertion portion 41 is inserted into the sample container 2, due to the elastic restoring force of the insertion portion 41, at least a portion of the outer surface 42 will be pressed toward or pressed against the wall portion of the sample container 2. In other words, the outer surface 42 constitutes a pressing surface for the interaction between the insertion portion 41 and the sample container 2. When the insertion portion 41 is inserted into the sample container 2, it is preferably held fixed, in particular pressed, by friction between the wall portions, for example with the side wall 23.

[0028] In addition, the cover 4 can be axially moved relative to the sample container 2 through the insertion portion 41. In other words, the sample container 2 guides the axial movement (i.e., displacement) of the insertion portion 41 relative to the sample container 2. With this axial movement characteristic, the cover 4 can be moved in a direction away from the bottom 24 or toward the bottom 24, or in a direction away from the sample P or toward the sample P when the sample P is present. The axial movement of the cover 4 is preferably performed along a movement axis parallel to the longitudinal axis of the sample container 2. The shape of the insertion portion 41 is not particularly limited. Figure 1 and Figure 2 As shown, preferably the insert part 41 is at least partially cylindrical and thus has a substantially circular cross section. As an alternative or in addition, the insert part 41 can also be arranged to be conical.

[0029] The cover 4 further comprises a flange 43 which extends radially outward from the insertion portion 41, as seen from a top view (e.g., equivalent to viewing along the axis (e.g., axis of symmetry) of the insertion portion 41). Thus, for example, the diameter of the flange 43 may be greater than the diameter of the insertion portion 41. When the insertion portion 41 is inserted into the sample container 2, the flange 43 is preferably flush with the edge 21. The diameter of the flange 43 may be substantially consistent with the diameter of the sample container 2. In other embodiments, the flange 43 may also extend beyond the edge 21. Furthermore, the diameter of the flange 43 may be greater than the diameter of the sample container 2. The diameter of the sample container 2 is defined as the diameter defining the radially outermost end of the outer surface and / or edge 21 of the sample container 2 facing away from the sample container cavity 3.

[0030] The flange 43 has a support surface 44, by which the flange 43 and the lid 4 can rest on the edge 21. The support surface 44 preferably has a support surface, which is oriented in the direction of the edge 21 and can contact (surface contact) with the edge 21 when the lid 4 is inserted into the sample container 2. The maximum depth of the insertion part 41 into the sample container 2 is determined by the flange 43. The flange 43 can especially prevent the lid 4 from being inserted too far into the sample container 2 and / or prevent the lid 4 from being located entirely below the edge 21, i.e. between the edge 21 and the bottom 24.

[0031] The cover 4 may have a bottom surface 45, which is preferably opposite to the top surface of the cover 4, for example, the top surface of the cover 4 is provided with a flange 43. In particular, the insertion part 41 may have a bottom surface 45. In the state where the insertion part 41 is inserted into the sample container 2, the bottom surface 45 is configured to (from above) define the sample container cavity 3. Therefore, it can be configured that the sample container cavity 3 is defined by the bottom surface 45 at the top, by the side walls 23 at the sides, and by the bottom 24 at the bottom.

[0032] The cover 4 also has a groove 46, which first extends axially on the outer surface 42 of the insertion part 41 and then extends radially outward on the support surface 44 of the flange 43. That is, the groove 46 extends outward from the outer surface 42 of the insertion part 41 in the direction toward the flange 43 and / or from the bottom surface 45. The groove 46 can extend outward from the bottom surface 45. The groove 46 extends all the way to the flange 43, then transitions to the support surface 44 at the flange 43, and then extends radially outward on the support surface 44. Therefore, the groove 46 extends at least along the parts 461, 462 that are connected to each other and preferably cross each other (for example, perpendicular). Among them, the first part 461 is the part where the groove 46 extends on the outer surface 42 of the insertion part 41, and the second part 462 is the part where the groove 46 extends on the support surface 44. Preferably, when the cover 4 is inserted into the sample container 2, a part of the groove 46 (for example, the part 461) is parallel to the longitudinal axis of the sample container 2. The portion of the groove 46 extending on the support surface 44 (ie, the portion 462 ) preferably intersects the longitudinal axis of the sample container 2 , and is particularly preferably perpendicular to the longitudinal axis of the sample container 2 .

[0033] When the insertion part 41 is inserted into the sample container 2 and the flange 43 rests on the edge 21 with its support surface 44, the sample container cavity 3 can be fluidically connected to the surrounding environment U of the sample container system 1 through the groove 46. The surrounding environment U can, for example, include the reaction chamber and / or the gas in the reaction chamber (the gas is not arranged in the sample container cavity 3). The surrounding environment U can also be ambient air. In particular, there may be a pressure different from that in the sample container cavity 3 in the surrounding environment U. The groove 46 can have an opening 47, through which the gas can flow into the groove 46 and then into the sample container cavity 3. As an alternative or in addition, it can also be provided that the gas flows from the sample container cavity 3 into the groove 46 and then is discharged into the surrounding environment U through the opening 47. For example, the groove 46 can extend on the support surface 44 to the radially outermost end of the flange 43, where the opening 47 is formed. However, this is not absolutely necessary, because for example the portion of the groove 46 extending on the support surface 44 may also extend beyond the edge 21, but does not have to extend to the radially outermost end of the flange 43 to achieve air intake from the surrounding environment U to the groove 46 and / or exhaust from the groove 46 to the surrounding environment U.

[0034] At least part of the groove 46 can be formed as a slit (or a groove, a groove, or the like). At least the part of the groove 46 extending from the outer surface 42 of the insert portion 41 and / or the support surface 44 can be configured as a slit. The groove 46 can be obtained by removing material from the outer surface 42 and / or the support surface 44. Therefore, for example, the groove 46 can also be subsequently processed and provided on a cover that does not yet have the groove.

[0035] The sample container system 1 and / or the cover 4 may have further elements, in particular elements that can interact with the fluid connection provided by the recess 46. For example, the sample container system 1 (e.g. above the cover 4) may have a cover disc (not shown) which is designed to prevent condensate, in particular condensate in the form of droplets falling due to gravity, from entering the recess 46. To this end, the cover disc may be arranged such that it extends radially outwards for a greater distance than the portion of the recess 46 extending in the support surface 44. The cover disc is preferably arranged in such a way that, viewed from the side, at least an opening 47 is provided between the cover disc and the edge 21. Preferably, the outer end of the cover disc is arranged radially outwards than the exhaust opening 47.

[0036] The material of the cover 4 is not subject to specific restrictions. The cover 4 can be made of a single material or different materials. The cover 4 is preferably at least partially made of plastic. The plastic may include PTFE, quartz and / or glass. For example, it can be provided that only the insertion portion 41 is made of plastic, and this plastic gives the insertion portion 41 a certain elasticity, which is preferably greater than the elasticity of the flange 43. The insertion portion 41 having a certain elasticity is particularly beneficial for inserting the cover 4 into the sample container 2, especially plugging or pressing. In other embodiments, the cover 4 may also be at least partially (or completely) made of other materials such as cork.

[0037] The sample container system 1 may further comprise a limiting element 5, which is arranged to limit the travel of the lid 4 inserted into the sample container 2. When the lid 4 rests on the edge 21 with its support surface 44, the limiting element 5 preferably maintains a certain distance from the lid 4. The distance preferably measures the distance between the limiting element 5 and the top surface of the lid 4 (e.g. the top surface with the flange 43). By means of the limiting element 5, in particular, it is prevented that the lid 4 falls off from the sample container 2 or that the lid 4 gets stuck (e.g. with the sample container 2 and / or other components, such as components of a pressure vessel). In other words, when the lid 4 rests on the limiting element 5, its insertion part 41 remains inserted in the sample container 2.

[0038] like Figure 1 and Figure 2 As shown, the cover 4 can be moved between the first position and the second position by moving axially relative to the sample container 2 (ie, along the longitudinal axis of the sample container 2 ). Figure 1The first position is shown by way of example. In the first position (when the sample container 2 or the side wall 23 is viewed from the side), at least a portion 48 of the recess 46 (which preferably has a first section 461) is covered by the sample container 2, in particular by the side wall 23. Therefore, the gas can basically only leave the recess 46 through the opening 47. In other words, the recess 46 and the portion of the sample container 2 covering the recess 26 define a fluid channel. The gas can then enter the fluid channel formed in this way (in the direction of the sample container cavity 3) and / or flow out of the channel (in the direction of the surrounding environment U) through the opening 47. In the first position, the support surface 44 preferably rests on the edge 21, so that there is preferably no gap between them except for the recess 46 (including the optional opening 47) extending on the support surface 44. The first position preferably represents a (pressureless) state, i.e. there is no pressure difference between the sample container cavity 3 and the surrounding environment U.

[0039] Figure 2 The second position of the cover 4 is shown by way of example. In this position, the portion 48 of the recess 46 which was covered by the sample container 2 in the first position moves out of the opening 22 and protrudes above the edge 21. In this way, the portion 48 is exposed. The now exposed portion 48 thus enlarges the venting opening of the recess 46, so that more gas can flow from the recess 46 into the surrounding environment U. Figure 1 and Figure 2 In the exemplary preferred embodiment shown, the vent of the groove 46 is then formed at least by the opening 47 and the exposed portion 48 of the groove 46. In the second position, the support surface 44 is preferably spaced apart from the edge 21, so that a gap is formed between the support surface 44 and the edge 21, through which the fluid can flow from the groove 46 into the surrounding environment U. In the second position, a portion of the groove 46 is still preferably covered by the sample container 2 or the side wall 23.

[0040] Cover 4 from Figure 1 The first position shown moves to Figure 2This characteristic of the second position shown is particularly advantageous for regulating the pressure (overpressure) in the sample container cavity 3. For example, if a reaction occurs in the sample container cavity 3, resulting in the generation and / or expansion of a fluid (gas, liquid, etc.) in the sample container cavity 3, the cover 4 is axially moved from the first position to the second position, which can in particular prevent an undesirable or at least undesirably rapid pressure increase in the sample container cavity 3. Therefore, there is no risk that the overpressure in the sample container cavity 3 will lead to a rupture of the sample container 2 or damage other components of the sample container system 2 (such as the cover 4). At the same time, by the axial movement (i.e. lifting) of the cover 4 to the second position, the fluid-connected vent (e.g. in the form of a slit) provided by the groove 46 will be enlarged, thereby automatically adapting to the fluid generation in the sample container cavity 3. In particular, the gas generated in the sample container cavity 3 during the reaction can therefore quickly escape from the sample container cavity 3 into the surrounding environment U.

[0041] Figure 3 A preferred application of the sample container system 1 is shown, namely in a pressure vessel 100, which is, for example, a pressure reactor. Therefore, the pressure vessel 100 is equipped with the sample container system 1. The pressure vessel 100 is configured to accommodate one or more sample container systems 1 and to initiate and / or promote a chemical and / or physical pressure reaction (directly and / or indirectly) of one or more samples P by heating (e.g., by means of microwaves).

[0042] The pressure vessel 100 may be a (high-pressure) reactor. The pressure vessel 100 is preferably made of a pressure-resistant material, such as a metal, preferably a steel material, particularly preferably a corrosion-resistant stainless steel alloy. The pressure vessel 100 is preferably designed to be able to be used at a pressure of at least 200 bar, preferably at a pressure of at least 500 bar, and at a temperature of up to 300° C. and above.

[0043] The pressure vessel 100 may have a reaction chamber or pressure space 122 for initiating and / or promoting a chemical and / or physical pressure reaction to the sample P. The reaction chamber 122 is preferably a so-called fluid or gas space. The pressure vessel 100 may surround the reaction chamber 122 from all sides. One or more sample container systems 1 are arranged in the reaction chamber 122 for sample processing and can preferably be removed from the reaction chamber through an opening.

[0044] The pressure vessel 100 may have a (pot-shaped) lower part 120 and a lid 124 (also referred to as a "lid"), which may be closed to each other and surround the reaction chamber 122 from all directions in a mutually closed state. The lid 124 closes the pressure vessel 100, i.e., the opening on the lower part 120 of the pressure vessel 100 for inserting and removing the sample P. Therefore, the pressure vessel 100 and / or the reaction chamber 122 may be opened and closed by the lid 124. The pressure vessel 100 may have a fixing element 128, such as a clamp, which fixes the lid 124 to the lower part 120 in a mutually closed state, in particular so that they will not separate from each other during the pressure reaction in the reaction chamber 122.

[0045] The reaction chamber 122 can be designed to contain a liquid or a basic load. The liquid is preferably water, but can also be any other liquid that strongly absorbs microwaves or contains such a liquid. The liquid is particularly used to heat or increase the temperature of the sample P located in at least one sample container system 1. For example, this can be achieved by making the sample P at least partially surrounded by a liquid, and the microwave generator heats the liquid by microwave absorption.

[0046] The pressure vessel 100 can also be equipped with a sample holder 108, by which one or more sample container systems 1 can be fixed in the reaction chamber 122. The sample holder 108 is preferably designed as a basket for accommodating a plurality of sample container systems 1. The sample holder 108 is particularly designed to insert at least one sample container system 1 into the reaction chamber 122 and remove it again by means of a rod-shaped handling structure (sample holder) 106 (for example, with a handle and / or a flange area, so as to be fixed in a preferably suspended manner in the reaction chamber 122). The sample holder 108 can be suspended on the cover 124 and / or another cover 142 described below.

[0047] The pressure vessel 100 may have another cover (so-called "liner") 142, which is preferably made of plastic, such as PTFE. This additional cover 142 is preferably part of a liner and is used to at least partially cover a part of the cover 124, such as its back side. The further cover 142 delimits the reaction chamber 122, preferably so that the fluid in the reaction chamber 122 is in contact with the further cover 142, and thus preferably not in contact with the cover 124. This prevents the cover 124 from being corroded in an undesirable manner by the fluid in the reaction chamber 122.

[0048] In particular, in order to protect the inner wall of the lower part 120, a sleeve 121 can be arranged therein, which is preferably made of plastic, for example PTFE, and which at least partially delimits the reaction chamber 122. The sleeve 121 thus preferably forms an inner lining, in particular in the form of a container. The sleeve 121 is preferably arranged to surround the reaction chamber 122 from all sides together with the further cover 142. Preferably, at least a part of the further cover 142, for example a flange area, is arranged between the sleeve 121 and the cover 124 and / or is sandwiched therebetween.

[0049] The pressure vessel 100 may have a fluid conduit 114 through which a carrier gas may enter the reaction chamber 122 to increase the pressure in the reaction chamber (pressurization). The fluid conduit 114 preferably extends through the lid 124 and / or the further lid 142.

[0050] Figure 3 Show that combined Figure 1 and Figure 2 The described function of the sample container system 1 for regulating the pressure in the sample container cavity 3 can be applied to the pressure container 100. In particular, it is not necessary for the pressure container 100 to be equipped with a device for regulating the pressure in the sample container cavity 3. Instead, the regulation of the pressure in the sample container cavity 3 can be simply achieved by the design of the cover 4. In this way, the pressure regulation process is simplified without having to adjust the pressure container 100.

[0051] Specifically, through the fluid communication provided by at least the groove 46 of the sample container system 1, the gas flowing out of the fluid conduit 114 can flow into the sample container cavity 3. In addition, through the fluid communication of the sample container system 1, the gas (for example, the reaction gas generated during the reaction process in the sample container cavity 3) can escape to the reaction chamber 122, and then be discharged from the pressure container 100 through the exhaust conduit (not shown) equipped with the pressure container 100.

[0052] When the sample container system 1 is disposed in the pressure container 100, the limiting element 5 may be formed by a part of the pressure container 100. For example, the lid 124 or another lid 142 may be provided with or constitute the limiting element 5. For example, the limiting element 5 may be formed integrally with the lid 124 or another lid 142. As an alternative or in addition, the sample holder 108 and / or the operating structure 106 may also be provided with the limiting element 5. For example, the limiting element 5 may be detachably disposed on the operating structure 106 or may be formed integrally with the operating structure 106.

[0053] The invention is not restricted to the features described above; in particular, the features described above can be combined with one another in any desired manner.

Claims

1. A sample container system (1) for use in a pressure container (100), the sample container system (1) comprising: A sample container (2), wherein the sample container (2) comprises: - a sample container cavity (3) for receiving a sample (P); as well as - an edge (21) which delimits an opening (22); as well as A cover (4) for closing the opening (22), wherein the cover (4) comprises: - an insertion portion (41), which can be inserted into the sample container (2) through the opening (22), and the cover (4) can be axially moved relative to the sample container (2) by means of the insertion portion (41); a flange (43) which extends radially outwards from the insert part (41) and which can rest on the edge (21) via a support surface (44) when the insert part (41) is inserted into the sample container (2); and - a groove (46) extending axially on the outer surface (42) of the insert part (41) and subsequently extending radially outwards on the support surface (44) of the flange, so that when the insert part (41) is inserted into the sample container (2) and the flange (43) rests on the edge (21) via the support surface (44), the sample container cavity (3) is in fluid communication with the surrounding environment (U) of the sample container system (1) via the groove (46).

2. The sample container system (1) according to claim 1, wherein: When the insertion portion (41) is inserted into the sample container (2), the cover (4) can be moved at least between a first position and a second position by axial movement relative to the sample container (2), wherein in the first position, at least a portion (48) of the groove (46) is covered by the sample container (2), and in the second position, the portion protrudes beyond the edge (21) and is exposed.

3. The sample container system (1) according to claim 1 or 2, wherein: The sample container (2) extends axially along a longitudinal axis, and when the insertion portion (41) is inserted into the sample container (2), the portion of the groove (46) extending on the outer surface (42) is at least partially parallel to the longitudinal axis.

4. The sample container system (1) according to any one of the preceding claims, wherein: The groove (46) is designed in a slit shape.

5. The sample container system (1) according to any one of the preceding claims, wherein: The insertion part (41) has a bottom surface (45) which defines the sample container cavity (3) when the insertion part (41) is inserted into the sample container (2), wherein the groove (46) extends outwardly from the bottom surface (45) and / or extends starting from the bottom surface (45).

6. The sample container system (1) according to any one of the preceding claims, wherein: The insert part (41) is designed to be cylindrical and / or conical, and / or the insert part (41) has a circular, preferably a perfectly circular, cross section.

7. The sample container system (1) according to any one of the preceding claims, wherein: The cover (4) is at least partially made of plastic.

8. The sample container system (1) according to claim 7, wherein: The plastics include: PTFE, quartz and / or glass.

9. The sample container system (1) according to any one of the preceding claims, wherein: When the insertion portion (41) is inserted into the sample container (2) and the support surface (44) rests on the edge (21), the flange (43) is flush with the edge (21).

10. The sample container system (1) according to any one of the preceding claims, wherein: When the insertion portion (41) is inserted into the sample container (2) and the support surface (44) rests on the edge (21), the portion of the groove (46) extending from the support surface (44) protrudes beyond the edge (21).

11. The sample container system (1) according to any one of the preceding claims, further comprising a covering element, which is designed to prevent condensation, in particular condensation in the form of droplets, from entering the recess (46), wherein: The covering element is preferably a lid or a covering disk.

12. The sample container system (1) according to any one of the preceding claims, further comprising a limiting element (5), which is configured to limit the movement stroke of the cover (4) inserted into the sample container (2), in particular to prevent the cover (4) from falling off from the sample container (2).

13. A pressure vessel (100) comprising the sample container system (1) according to any one of the preceding claims.

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