Sealing ring air tightness testing device

Abstract

The utility model relates to the technical field of sealing ring air tightness testing, in particular to a sealing ring air tightness testing device. The sealing ring air tightness testing device comprises a first module, a second module, a driving mechanism and an argon cylinder, one of the first module and the second module is provided with a mounting groove, the first module and the second module jointly form a sealing cavity, a sealing ring is arranged in the mounting groove to seal the sealing cavity, the second module is provided with a guide groove, and the guide groove is provided with an air inlet. The first module is arranged in the guide groove in a sliding mode, the driving mechanism enables the first module and the second module to be close to each other so as to compress the sealing ring, and the argon cylinder is communicated with the sealing cavity. According to the invention, loading of the sealing ring at the tail part of the stopper rod can be simulated, and different loading forces are applied through the driving mechanism to deform the sealing ring and obtain different sealing effects, so that the airtightness of the sealing ring is quantified, and meanwhile, a loading force range required by a client application end can be better guided, so that the airtightness of the sealing ring is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness test technical field especially relates to a sealing ring airtightness testing device. BACKGROUND

[0002] Continuous casting is a kind of production process that the ladle containing refined molten steel is transported to the rotary table, and after the rotary table is rotated to the pouring position, the molten steel is poured into the tundish, and the molten steel is distributed to each crystallizer through the upper nozzle of the tundish. Stopper is a kind of refractory material for continuous casting, and the stopper is hollow. In the casting process, the stopper cooperates with the upper nozzle of the tundish, which can play a good role in controlling the flow of steel, and at the same time, argon can be blown into the molten steel through the head of the stopper to improve the flow field, relieve nodulation and promote the floating of inclusions in the molten steel.

[0003] In order to make the argon blow into the molten steel more, the sealing ring must be used for sealing at the tail of the stopper to ensure the air tightness. Therefore, the air tightness of the sealing ring is an important performance index.

[0004] At present, the sealing effect of the sealing ring at the tail of the stopper can only be installed on the stopper product and verified in the application site, and the process is more complicated, and the air tightness of the sealing ring cannot be quantified.

[0005] Therefore, there is an urgent need for a sealing ring airtightness testing device to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of sealing ring airtightness testing device, can simulate the loading of sealing ring at the tail of stopper, and different loading force is applied to make sealing ring deform by driving mechanism, and different sealing effect is obtained, so as to quantify the air tightness of sealing ring, simplify the steps of sealing ring airtightness test.

[0007] To achieve the above object, the following technical scheme is provided:

[0008] A kind of sealing ring airtightness testing device, comprising:

[0009] Argon gas cylinder;

[0010] First module;

[0011] Second module, one of the first module and the second module is provided with mounting groove, and the first module and the second module form sealing cavity in common, sealing ring is arranged in the mounting groove, to seal the sealing cavity, argon gas cylinder is communicated with the sealing cavity, the second module is provided with guide slot, and the first module is slidably arranged in the guide slot;

[0012] A driving mechanism is configured to drive at least one of the first module and the second module to move so as to make the first module and the second module close to each other to compress the sealing ring.

[0013] As an option, the outer side wall of the sealing ring abuts against the inner wall of the other one of the first module and the second module.

[0014] As an option, the sealing ring is made of fire-resistant elastic material, and the number of the sealing ring is at least one.

[0015] As an option, the material of the sealing ring is graphite.

[0016] As an option, the number of the sealing ring is at least two, and the at least two sealing rings are arranged in an axial direction.

[0017] As an option, a first air passage is arranged on the first module, and the first air passage is in communication with the sealing cavity.

[0018] The first air passage is in communication with an argon tank through an argon pipe, the argon tank is connected with an argon cylinder, the argon cylinder provides a preset flow of argon to the first air passage through the argon tank, and the argon tank can detect and display the flow and back pressure of the argon flowing through the argon tank.

[0019] As an option, the first air passage comprises:

[0020] A first sub-air passage;

[0021] A second sub-air passage in communication with the first sub-air passage, and the first sub-air passage and the second sub-air passage are arranged at an angle.

[0022] As an option, the driving mechanism comprises:

[0023] A driving member, an output end of the driving member is connected with the first module;

[0024] A first pressure detection member arranged on the driving member and configured to detect the pressure applied by the driving member on the first module.

[0025] As an option, the first pressure detection member is any one of a pressure gauge, a pressure sensor and a pressure meter.

[0026] Compared with the prior art, the utility model has the beneficial effects that:

[0027] The sealing ring air tightness testing device provided by the utility model installs the sealing ring in the installation groove, guarantees the installation stability of the sealing ring, drives at least one of the first module and the second module to move through the driving mechanism, and realizes the guidance of the moving process of the first module through the guide groove, so that the first module and the second module are close to each other, the sealing ring is compressed, and the argon gas cylinder is used to introduce gas with a certain pressure into the sealing cavity, so that different sealing effects are obtained, the air tightness of the sealing ring under different deformation amounts is judged, the use effect of the sealing ring loaded on the tail of the stopper is simulated, the air tightness of the sealing ring is quantified, the testing device is simple in structure and convenient to use, and the steps of the sealing ring air tightness testing are simplified. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings without the creative labor of the person skilled in the art.

[0029] Figure 1 The structural schematic diagram of the sealing ring air tightness testing device provided by the embodiments of the utility model.

[0030] Reference signs:

[0031] 100, first module; 101, first air duct; 1011, first sub-air duct; 1012, second sub-air duct; 102, installation groove;

[0032] 200, second module; 201, sealing cavity; 202, guide groove;

[0033] 300, sealing ring;

[0034] 400, driving mechanism; 410, driving piece; 420, first pressure detection piece;

[0035] 500, argon tank; 510, argon pipe;

[0036] 600, argon gas cylinder. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the application, so the application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, if there are terms such as "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, if the first feature appears "on" or "under" the second feature and the like, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It is to be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are used for explanation only and are not intended to be limiting.

[0043] As shown in the Figure 1 The sealing ring air tightness testing device provided by the embodiment includes a first module 100, a second module 200, a driving mechanism 400, and an argon gas cylinder 600. The first module 100 is provided with a mounting groove 102, and the first module 100 and the second module 200 jointly form a sealed cavity 201. A sealing ring 300 is arranged in the mounting groove 102 to seal the sealed cavity 201. The second module 200 is provided with a guide groove 202, and the first module 100 is slidingly arranged in the guide groove 202. The driving mechanism 400 is configured to drive at least one of the first module 100 and the second module 200 to move, so that the first module 100 and the second module 200 are close to each other to compress the sealing ring 300. The argon gas cylinder 600 is in communication with the sealed cavity 201.

[0044] During measurement, the sealing ring 300 is installed in the mounting groove 102 to ensure the installation stability of the sealing ring 300. The driving mechanism 400 drives at least one of the first module 100 and the second module 200 to move, and guides the movement of the first module 100 through the guide groove 202, so that the first module 100 and the second module 200 are close to each other to compress the sealing ring 300. At the same time, the argon gas cylinder 600 introduces a certain pressure gas into the sealed cavity 201 to obtain different sealing effects, so as to judge the air tightness of the sealing ring 300 under different deformation amounts. The use effect of the sealing ring 300 loaded on the tail of the stopper rod is simulated, so as to quantify the air tightness of the sealing ring 300. The testing device has simple structure and is convenient to use, and thus the steps of the sealing ring 300 air tightness test are simplified.

[0045] In this embodiment, the driving mechanism 400 includes a driving member 410 and a first pressure detecting member 420. The first module 100 is connected to the output end of the driving member 410, and the driving member 410 is configured to provide a certain pressure to the first module 100. The first pressure detecting member 420 is arranged on the driving member 410 and is configured to detect the pressure applied by the driving member 410 to the first module 100. The driving member 410 can drive the first module 100 to move close to or away from the second module 200, so as to change the compression amount of the sealing ring 300. In other embodiments, the second module 200 is connected to the output end of the driving member 410, and the driving member 410 can drive the second module 200 to move close to or away from the first module 100, so as to change the compression amount of the sealing ring 300.

[0046] Optionally, the sealing ring air tightness testing device further includes an argon tank 500 connected to the argon cylinder 600 and in communication with the sealing cavity 201. In the argon tank 500, the argon inlet is connected to the argon cylinder 600. The flow rate and the back pressure can be measured from the argon tank 500 connected to the "argon port". At the argon outlet, the argon pipe 510 is connected to the first module 100 for argon supply. When the argon cylinder 600 provides a stable flow rate of argon to the argon tank 500, and the driving mechanism 400 provides a certain pressure to the first module 100, if the air tightness of the sealing ring 300 is good, the argon tank 500 can measure a higher and stable back pressure, and if the air tightness of the sealing ring 300 is not good, the back pressure measured by the argon tank 500 is unstable or lower. At this time, when the pressure provided by the driving mechanism 400 to the first module 100 is increased, the sealing ring 300 is pressed and better seals the gap between the first module 100 and the second module 200, so that the air tightness is improved, and the back pressure measured by the argon tank 500 is correspondingly increased. When the back pressure reaches a certain stable value, the pressure value measured by the first pressure detecting member 420 is the required loading force of the customer application end.

[0047] In some embodiments, the driving member 410 can be a cylinder, a hydraulic cylinder or a linear motor, and can also be a lead screw nut driving structure or a gear rack driving structure, as long as it can realize the mutual approach or separation of the first module 100 and the second module 200.

[0048] In this embodiment, the outer side wall of the sealing ring 300 abuts against the inner wall of the second module 200, so as to realize the radial limiting of the sealing ring 300 by the second module 200. In other embodiments, the mounting groove 102 can also be arranged on the second module 200, and the outer side wall of the sealing ring 300 abuts against the inner wall of the first module 100.

[0049] Optionally, the first module 100 is provided with a first air passage 101, the argon cylinder 600 is communicated with the sealed cavity 201 through the first air passage 101, the first air passage 101 is communicated with the argon tank 500 through the argon pipe 510, the argon tank 500 is connected with the argon cylinder 600, the argon cylinder 600 provides the first air passage 101 with a preset flow of argon through the argon tank 500, and the argon tank 500 can detect and display the argon flow and back pressure flowing through the argon tank 500.

[0050] Optionally, the first air passage 101 comprises a first sub-air passage 1011 and a second sub-air passage 1012, the second sub-air passage 1012 is communicated with the first sub-air passage 1011, and the first sub-air passage 1011 and the second sub-air passage 1012 are arranged at an angle, which facilitates the processing of the first sub-air passage 1011 and the second sub-air passage 1012 and helps to improve the processing efficiency of the first air passage 101. Preferably, the first sub-air passage 1011 and the second sub-air passage 1012 are perpendicular, that is, the angle between the first sub-air passage 1011 and the second sub-air passage 1012 is 90°.

[0051] In the embodiment, the first pressure detection member 420 is a pressure gauge, which has high measurement accuracy and is easy and intuitive to operate. Of course, in other embodiments, the first pressure detection member 420 can also be a pressure meter, a pressure sensor or a gas flow meter, and the present embodiment is not limited thereto.

[0052] Optionally, the sealing ring 300 is made of a fire-resistant elastic material, and the number of the sealing ring 300 is at least one.

[0053] Optionally, the number of the sealing ring 300 is at least two, and the at least two sealing rings 300 are arranged in an axial direction to meet the air tightness test when multiple sealing rings 300 are used at the same time.

[0054] Optionally, the material of the sealing ring 300 is graphite.

[0055] It should be noted that, in the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above are only the preferred embodiments of the present application and the technical principles applied by the present application. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A seal ring air tightness testing device, characterized in that, The application relates to an argon gas cylinder (600), a first module (100), a second module (200), a sealing groove (102) arranged on one of the first module (100) and the second module (200), a sealing cavity (201) formed by the first module (100) and the second module (200), a sealing ring (300) arranged in the sealing groove (102) to seal the sealing cavity (201), the sealing cavity (201) being connected with the argon gas cylinder (600), a guide groove (202) arranged on the second module (200), the first module (100) being slidably arranged in the guide groove (202), a driving mechanism (400) configured to drive at least one of the first module (100) and the second module (200) to move, so that the first module (100) and the second module (200) are close to each other to compress the sealing ring (300). An outer side wall of the sealing ring (300) abuts against an inner wall of the other one of the first module (100) and the second module (200). The sealing ring (300) is made of a fire-resistant elastic material, and the number of the sealing ring (300) is at least one. The material of the sealing ring (300) is graphite. The number of the sealing ring (300) is at least two, and the at least two sealing rings (300) are arranged in an axial direction.

2. The seal ring air tightness testing device of claim 1, wherein, A first gas channel (101) is arranged on the first module (100) and connected with the sealing cavity (201).

3. The seal ring air tightness testing device of claim 1, wherein, The first gas channel (101) is connected with an argon tank (500) through an argon pipe (510), the argon tank (500) is connected with the argon gas cylinder (600), the argon gas cylinder (600) provides a preset flow of argon to the first gas channel (101) through the argon tank (500), and the argon tank (500) can detect and display the flow and back pressure of argon flowing through the argon tank (500).

4. The seal ring air tightness testing device of claim 3, wherein, The first gas channel (101) comprises:

5. The seal ring air tightness testing device of claim 4, wherein, A first sub-gas channel (1011); 6. The seal ring air tightness testing device of claim 1, wherein, A second sub-gas channel (1012) connected with the first sub-gas channel (1011), and the first sub-gas channel (1011) and the second sub-gas channel (1012) are arranged at an angle. The driving mechanism (400) comprises:

7. The seal ring air tightness testing device of claim 6, wherein, A driving member (410), an output end of the driving member (410) being connected with the first module (100); A first pressure detection member (420) arranged on the driving member (410) and configured to detect the pressure applied by the driving member (410) on the first module (100). The first pressure detection member (420) is any one of a pressure gauge, a pressure sensor and a pressure meter.

8. The seal integrity testing apparatus of any one of claims 1-7, wherein, ​ ​ ​ 9. The seal ring air tightness testing device of claim 8, wherein, ​

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