CN212557485U - High-pressure container sealing cover and true density instrument using same - Google Patents

Abstract

The utility model provides a sealed lid of high-pressure vessel and use its true density appearance belongs to the experimental facilities field, lid including coaxial setting, guide body and sealed welt, the guide body is established and is set up at the protruding lid of inner circle and the lower extreme of lid, guide body and lid fixed connection, be equipped with the guide way that at least one spiral upwards set up on the guide body, be equipped with the guide pillar that corresponds with the guide way by the outer lane of seal, the lower extreme of guide way is equipped with the introducing port, the inner circle of guide body is equipped with sealed welt, sealed welt relative guide body up-and-down motion, sealed welt includes the sealed face of first sealed face and second, the protruding setting that corresponds of first sealed face and the inside location of guide body, the sealed face of second corresponds the setting and is equipped with the sealing washer between the two. The operation of the sealing cover of the utility model reduces the difficulty of personnel operation, thereby ensuring the reliability of operation; the abrasion of the sealing ring is greatly reduced, and the service life of the sealing ring is prolonged.

Description

High-pressure container sealing cover and true density instrument using same

Technical Field

The utility model belongs to the experimental facilities field relates to the measurement of the real density of material (or called skeleton density), especially relates to the sealed lid of high-pressure vessel and uses its real density appearance.

Background

The density of a substance, which is one of the most frequently tested items in a testing laboratory as a basic physical property parameter, is defined as the density of a substance, i.e., the mass divided by the volume. The mass of a substance can be accurately obtained using a balance, and therefore, density measurement is often a problem of how to accurately measure the volume of a sample.

For liquids and solids with regular shapes, the test volume is relatively simple. However, the volume measurement of the powder material has certain difficulties, and at present, the following two solutions are mainly available.

One solution is to pour the powder directly into a container of a fixed volume and weigh its mass to obtain the so-called bulk density. The value has certain significance for the packaging industry (such as washing powder). However, in the testing process, the test results are affected by different toppling heights and angle changes, so that the repeatability and stability of the test results are poor.

One solution is to directly pour the powder into a measuring cylinder and vibrate the powder on an instrument according to fixed fall, frequency and times, and the volume of the powder after being vibrated is measured to obtain the tap density, wherein the numerical precision is higher than the loose density.

The best solution is to put the powder into a closed cavity with known volume, test the volume of the cavity after putting the sample by a gas diffusion method, compare with the known value, then obtain the volume of the gas discharged by the put sample, the volume measured in this way is the skeleton volume of the material, the corresponding density is called the skeleton density of the sample, because it represents the real characteristic of the sample, and the obtained data has good accuracy and repeatability, therefore, the density value is also called the true density of the sample, and the used testing instrument is called the true density instrument.

Therefore, how to design the sealing scheme of the sample bin becomes a difficult point of designing the true density instrument, the sealing scheme is convenient for users to use, enough sealing performance can be generated, the relative constancy of the size of the inner space of the cavity can be easily kept in repeated operation, the sealing of the vacuum density instrument needs to be realized by a sealing cover, and the sealing cover with the structure has good sealing effect and is also suitable for sealing other high-pressure containers.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing a sealing cover of a high-pressure container and a true density instrument using the sealing cover, the operation of the sealing cover reduces the difficulty of the operation of personnel, thereby ensuring the reliability of the operation; there is not sliding friction between sealing washer and the sealed face, the wearing and tearing of the sealing washer that has significantly reduced have prolonged the life of sealing washer, have promoted the convenience of whole true density appearance operation, promote work efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme is: the high-pressure container sealing cover comprises a cover body, a guide body and a sealing lining plate which are coaxially arranged, wherein the guide body is arranged on the inner ring of the cover body, the lower end of the cover body protrudes out of the cover body, the guide body is fixedly connected with the cover body, at least one guide groove which is spirally upwards arranged is arranged on the guide body, a guide pillar corresponding to the guide groove is arranged on the outer ring of a sealed body, an introducing port is arranged at the lower end of the guide groove, the sealing lining plate is arranged on the inner ring of the guide body, the sealing lining plate moves up and down relative to the guide body, the sealing lining plate comprises a first sealing surface and a second sealing surface, the first sealing surface corresponds to a positioning bulge in the guide body, the second sealing surface corresponds to the upper end of the sealed body, and.

Furthermore, the positioning bulge is arranged on the inner ring of the guide body and is arranged in a bulging mode, the upper end face of the positioning bulge is lower than the upper end face of the guide body, and the upper limit position of the sealing lining plate is lower than the upper end face of the guide body.

Further, the lower extreme of sealed welt stretches into by the seal setting, and the outer lane of stretching into the part is equipped with at least one outside bellied spacing post, by the seal with the position that spacing post corresponds is equipped with the spacing groove, spacing post with the spacing groove corresponds the setting and sliding connection from top to bottom of the two, the up end equipartition of sealed welt has a plurality of spring bulb posts, the inside top of lid is equipped with the antifriction plate, the up end of spring bulb post with the antifriction plate contact sets up.

Furthermore, the middle part of the upper end of the sealing lining plate is provided with a guide post, the outer ring of the guide post is provided with at least one spring disc, the spring disc and the guide post are coaxially arranged, the upper end of the spring disc is provided with a plurality of adjusting circular plates with different thicknesses, the top end inside the cover body is provided with a position avoiding groove, and the position avoiding groove corresponds to the guide post and is coaxially arranged with the guide post.

Furthermore, the sealing ring is embedded into the second sealing surface of the sealing lining plate or the upper end surface of the sealed body, and the lower end surface of the sealing ring protrudes out of the sealing lining plate or the upper end surface of the sealing ring protrudes out of the upper end surface of the sealed body.

Further, the outer lane of lid is equipped with the swivelling chute of a plurality of indents, the guide body passes through a plurality of screw fixed connection of axial equipartition with the lid, the quantity of guide chute is two and the equipartition setting, the guide chute includes terminal straightway cecum, the lower extreme outer lane of guide body is equipped with the strengthening rib.

The guide post is of a bearing structure and is fixed on the outer ring of the sealing body, one guide groove is matched with one guide post, and the outer end face of the guide post is smaller than the inner diameter of the cover body.

Furthermore, a positioning cavity is arranged in the sealing body, and an inner lining block or an inner lining cup for fixing the measured object is arranged in the positioning cavity.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model discloses in the in-process of installation, utilize the structure of guide pillar and guide way, realized the conversion of rotatory action to sealed welt lift action, and the precision is higher, set up the sealing washer between second sealed face and seal simultaneously, avoided the process that traditional structure sealing washer rubs repeatedly, prolonged the life of sealing washer, the operation of the sealed lid of this structure has reduced the degree of difficulty of personnel's operation, and then has ensured the reliability of operation; sliding friction does not exist between the sealing ring and the sealing surface, so that the abrasion of the sealing ring is greatly reduced, the service life of the sealing ring is prolonged, the convenience of the operation of the whole true density instrument is improved, and the working efficiency is improved;

2. the guide groove comprises a tail end straight line section blind end, so that positioning after screwing is guaranteed, loosening is avoided, an inwards concave positioning groove can be arranged at the rear end of the straight line section blind end, so that loosening after the guide pillar enters is guaranteed, the guide groove is arranged according to actual conditions, a reinforcing rib is arranged on the outer ring of the lower end of the guide body, strength is improved, and the guide groove is prevented from being damaged due to repeated use;

3. set up the spring dish piece and adjust the plectane disk piece between sealed welt and the lid, the elasticity size that the adjustment plectane is used for adjusting the spring dish piece, compensate machining error, guarantee the deflection of sealing washer between sealed welt and the seal, thereby guarantee good leakproofness, the inside top of lid is equipped with keeps away the groove, it corresponds and the two coaxial settings with the guide post to keep away the groove, reduce occupation space, make the structure compacter, the high reduction of whole lid, the material consumption reduces, the cost is reduced, and light in weight, it is more convenient to take, because be used for the sealed of high-pressure container, except the sealing washer, other parts all adopt metal material such as stainless steel to make, because weight also considers the factor, weight is influential to the cost, secondly, the influence is twisted repeatedly, it is better to use hard more.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic structural view of embodiment 1 of a sealing cap for a high-pressure container according to the present invention;

fig. 2 is a sectional view of embodiment 1 of the sealing cap for a high-pressure container according to the present invention;

figure 3 is a detailed view of section a of figure 2 of the present invention;

figure 4 is a detailed view of section B of figure 2 of the present invention;

FIG. 5 is a schematic structural view of embodiment 2 of the sealing cap for a high-pressure container according to the present invention;

fig. 6 is a sectional view of embodiment 2 of the sealing cap for a high-pressure container according to the present invention;

fig. 7 is a detailed view of the portion C of fig. 6 according to the present invention.

Reference numerals:

11. a cover body; 111. a rotating tank; 112. a position avoiding groove; 12. a guide body; 121. a guide groove; 122. an inlet port; 1211. a blind end of the straight line segment; 124. reinforcing ribs; 125. positioning the projection; 13. sealing the lining plate; 131. a guide post; 132. a spring disc; 133. adjusting the circular plate; 134. a limiting column; 135. a first sealing surface; 136. a second sealing surface; 30. a seal ring; 137. a spring ball stud; 138. a wear plate; 40. and a sealing body.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

A true densitometer generally comprises two connected, sealable chambers, one for holding a sample and the other for measuring the volume during the test, the pressure variation of the gas that diffuses between the two chambers according to the boehler equation:

P1V1＝P2(V1+V2)。

after the instrument is produced, the volumes of the two cavities are calibrated, so that the volumes of the extended bin and the blank sample bin are known values. After the sample was placed in the sample chamber, the chamber was pressurized to the target value and the pressure was read as P1. The electromagnetic valve separating the two cavities is opened to connect the two cavities, and the gas is diffused from the sample bin to the expanding bin, and the pressure is P2 after the gas is stabilized. In the process:

P1×(V₁-V_sample)＝P2×(V₁-V_5ample+V₂)

since both V1 and V2 are known, the sample volume can be accurately measured by this procedure, and the test procedure shows that the chamber in which the sample is placed must have reliable sealing properties, and accurate data cannot be obtained if a leak occurs during the pressurization process. Meanwhile, the volume of the cavity for placing the sample cannot be obviously changed in the process of repeated opening and closing, and any deviation from the volume in calibration is counted into the sample volume value in the testing process.

Common sealed lid design, it adopts the radial sealed mode of rubber seal, in the recess of sealing washer embedding cylindricality body position under one's side, the tight in-process of sealed lid, promote the cylinder and crowd into columniform sample storehouse downwards, because great resistance need be overcome with the process of crowded sample storehouse of sealing washer, consequently the process of screwing of sealed lid is designed into the mode that many rings were screwed up, the user need rotate the sealed lid of major diameter many rings just can lock sealed lid completely, accomplish the closed operation of sealed lid. This kind of sealed mode, the user need confirm sealed lid and screwed completely, in order to ensure the sealed perfect in sample storehouse, and sealed position can not produce the change, the advantage lies in that the inside volume in repeated operation in-process sample storehouse can not produce the change, but user operation difficulty (need rotatory many rings just can screw completely, and the dynamics that the in-process of screwing up needs is great), there is more serious friction in sealing washer and the sample bulkhead, the sealing washer is worn and torn easily, often need to be changed, because the sealing washer is placed the position and is taken more difficultly, consequently, it is comparatively difficult to change the sealing washer.

Example 1: as shown in fig. 1 to 4, the high-pressure container sealing cover includes a cover 11, a guide 12 and a sealing liner 13 coaxially disposed, the guide 12 is disposed on an inner ring of the cover 11 and the lower end of the guide protrudes from the cover 11, the guide 12 is fixedly connected to the cover 11, the guide 12 is provided with at least one guide groove 121 spirally and upwardly disposed, an outer ring of the sealed body 40 is provided with a guide post corresponding to the guide groove 121, the lower end of the guide groove 121 is provided with an introduction port 122, the sealing liner 13 is disposed on an inner ring of the guide 12, the sealing liner 13 moves up and down relative to the guide 12, the sealing liner 13 includes a first sealing surface 135 and a second sealing surface 136, the first sealing surface 135 is disposed corresponding to a positioning protrusion 125 inside the guide 12, the second sealing surface 136 is disposed corresponding to an upper end surface of the sealed body 40, and a sealing ring 30.

Furthermore, the positioning protrusion 125 is disposed at the inner ring of the guide body 12 and protrudes inward, the upper end surface of the positioning protrusion 125 is lower than the upper end surface of the guide body 12, the upper limit position of the sealing liner 13 is lower than the upper end surface of the guide body 12, the sealing liner 13 moves downward under the action of gravity when not being screwed, the upper end surface of the positioning protrusion 125 is in contact with the first sealing surface 135, when being installed, the first sealing surface 135 rises along with the screwing process, the sealing ring 30 is screwed to the second sealing surface 136 to be attached to the upper end surface of the sealing body 40, and the sealing ring 30 deforms under force to form a tight sealing structure.

Further, the seal ring 30 is embedded into the second sealing surface 136 of the sealing liner 13 or arranged on the upper end surface of the sealed body 40, the lower end surface of the seal ring 30 protrudes out of the sealing liner 13 or the upper end surface of the seal ring 30 protrudes out of the upper end surface of the sealed body 40, the cross section of the seal ring 30 is a star-shaped seal ring 30, and the seal ring is in an X shape, so that sufficient deformation is guaranteed, and the seal effect is good.

Further, the outer lane of lid 11 is equipped with the swivelling chute 111 of a plurality of indents, when rotatory, the strength is conveniently applyed to the finger, increase frictional force, promote the convenience of operation, guide 12 and lid 11 are through a plurality of screw fixed connection of axial equipartition, adopt four stop screw fixation in this structure, do not stand out the outer lane setting of lid 11, the appearance is more pleasing to the eye, the quantity of guide way 121 is two and the equipartition setting, the symmetry sets up, the atress is balanced, conveniently screw fast, guide way 121 includes terminal straightway blind end 1211, guarantee the location after screwing, avoid not hard up, also can set up the positioning groove of indent at the rear end of straightway blind end 1211, it is not hard up after guaranteeing that the guide pillar gets into, set up according to actual conditions, the lower extreme of guide 12 is equipped with strengthening rib 124 in the outer lane, promote intensity, avoid guide way 121 to use repeatedly and destroyed.

Further, a guide post 131 is provided in the middle of the upper end of the sealing liner 13, at least one spring disc 132 is provided on the outer ring of the guide post 131, the spring disc 132 and the guide post 131 are coaxially disposed to ensure the positional accuracy of the spring disc 132 and to apply force in the vertical direction, a plurality of adjustment discs 133 having different thicknesses are provided on the upper end of the spring disc 132 to adjust the elastic force of the spring disc 132 to compensate for processing errors and to ensure the deformation of the sealing ring 30 between the sealing liner 13 and the sealing body 40, thereby ensuring good sealing performance, a clearance groove 112 is provided on the top end of the inside of the cover 11, the clearance groove 112 and the guide post 131 are coaxially disposed to reduce the occupied space, thereby making the structure more compact, reducing the height of the entire cover 11, reducing the material usage, reducing the cost, and making the weight lighter, and more convenient to take, because the sealing is easy for high pressure, except for the sealing ring 30 made of metal materials such as stainless steel, because weight is also a factor, weight has an impact on cost and labor intensity, and repeated screwing is better when the force is smaller.

Example 2: as shown in fig. 5-7, the lower end of the sealing liner 13 extends into the sealed body 40, and the outer ring of the extending portion is provided with at least one outwardly protruding limiting post 134, the sealed body 40 is provided with a limiting groove at a position corresponding to the limiting post 134, the limiting post 134 is arranged corresponding to the limiting groove and is slidably connected with the limiting groove up and down, after the limiting post 134 and the limiting groove are arranged, the mounting and positioning accuracy and the up-and-down movement accuracy of the sealing liner 13 can be ensured, the sealing accuracy and the sealing stability can be improved, the upper end surface of the sealing liner 13 is uniformly provided with a plurality of spring ball head posts 137, the top end inside the cover 11 is provided with a wear plate 138, the upper end surface of the spring ball head posts is arranged in contact with the wear plate, the spring ball head post structure is arranged to ensure that the wear plate constantly contacts with the spring ball head posts during the downward movement of the cover 11, the pre-pressing effect is, the replacement is convenient, and the maintenance cost is reduced.

The vacuum densimeter using the high-pressure container sealing cover is characterized in that guide pillars are of a bearing structure and are fixed on the outer ring of the sealing body 40, one guide groove 121 is matched with one guide pillar, the outer end face of each guide pillar is smaller than the inner diameter of the cover body 11, the bearing structure is adopted, the friction coefficient of the guide pillar and the guide groove 121 is small, force application is small, and operation convenience is further improved; further, a positioning cavity is arranged in the sealing body 40, and an inner lining block or an inner lining cup for fixing the measured object is arranged in the positioning cavity and used for placing the measured sample.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (8)

1. The sealed lid of high-pressure vessel, its characterized in that: the sealing lining plate comprises a cover body, a guide body and a sealing lining plate which are coaxially arranged, wherein the guide body is arranged on the inner ring of the cover body, the lower end of the guide body is protruded, the cover body is arranged, the guide body is fixedly connected with the cover body, at least one guide groove which is spirally upwards arranged is arranged on the guide body, a guide pillar corresponding to the guide groove is arranged on the outer ring of a sealed body, an introducing port is arranged at the lower end of the guide groove, the sealing lining plate is arranged on the inner ring of the guide body, the sealing lining plate moves up and down relative to the guide body, the sealing lining plate comprises a first sealing surface and a second sealing surface, the first sealing surface corresponds to a positioning bulge in the guide body, the second sealing surface corresponds to the upper end face of the.

2. The seal cap for high-pressure vessels according to claim 1, wherein: the positioning bulge is arranged on the inner ring of the guide body and is arranged in a bulging mode, the upper end face of the positioning bulge is lower than the upper end face of the guide body, and the upper limit position of the sealing lining plate is lower than the upper end face of the guide body.

3. The seal cap for high-pressure vessels according to claim 1, wherein: the lower extreme of sealed welt stretches into by the seal setting, and stretches into partial outer lane and be equipped with at least one outside bellied spacing post, by the seal with the position that spacing post corresponds is equipped with the spacing groove, spacing post with sliding connection about the spacing groove corresponds setting and the two, the up end equipartition of sealed welt has a plurality of spring bulb posts, the inside top of lid is equipped with the antifriction plate, the up end of spring bulb post with the antifriction plate contact sets up.

4. The seal cap for high-pressure vessels according to claim 1, wherein: the middle part of sealed welt upper end is equipped with the guide post, the outer lane of guide post is equipped with at least one spring video disc, the spring video disc with the coaxial setting of guide post, the upper end of spring video disc is equipped with the unequal adjustment plectane of a plurality of thicknesses, the inside top of lid is equipped with keeps away the position groove, keep away the position groove with the guide post corresponds and the two coaxial setting.

5. The seal cap for high-pressure vessels according to claim 1, wherein: the sealing ring is embedded into the second sealing surface of the sealing lining plate or the upper end surface of the sealed body, and the lower end surface of the sealing ring protrudes out of the sealing lining plate or the upper end surface of the sealing ring protrudes out of the upper end surface of the sealed body.

6. The seal cap for high-pressure vessels according to claim 1, wherein: the outer lane of lid is equipped with the swivelling chute of a plurality of indents, a plurality of screw fixed connection of guide body and lid through the axial equipartition, the quantity of guide groove is two and the equipartition setting, the guide groove includes terminal straightway cecum, the lower extreme outer lane of guide body is equipped with the strengthening rib.

7. A true density instrument using the sealing cap for high-pressure vessels according to any one of claims 1 to 6, wherein: the guide posts are of a bearing structure and fixed on the outer ring of the sealing body, one guide groove is matched with one guide post, and the outer end face of each guide post is smaller than the inner diameter of the cover body.

8. The true density instrument using the sealing cover for a high pressure vessel according to claim 7, wherein: the sealing device is characterized in that a positioning cavity is arranged in the sealing body, and an inner lining block or an inner lining cup for fixing a measured object is arranged in the positioning cavity.

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