Flexible communicating vessel

Abstract

The invention relates to the technical field of chemical production, in particular to a flexible communicating vessel which comprises a middle connecting body provided with a hole, and an end face sealing ring is arranged in the hole. The fixing assembly is connected with the middle connecting body, and a movable cavity is formed between the fixing assembly and the middle connecting body; the movable connecting end comprises a movable part and a connecting part, the movable part is movably connected into the movable cavity, the end face sealing ring abuts against the movable part to achieve sealing, and the connecting part is communicated with the hole. 2, the pressure resistance limit is relatively higher, and the problems of internal fatigue damage, cracks, delamination and the like in the use process of the hose are avoided; 3, compared with a hose with a large drift diameter, when the hose is used on a weighing metering device, the interference on a metering result is small, and errors are reduced; and 4, the generated flow resistance is small, the occupied mounting space is small, and deposited dirt cannot be generated.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical production, and particularly relates to a flexible connector. Background Art

[0002] A flexible connector is a connecting component, often applied in the fields related to fluid transmission. There are mainly the following three application scenarios for flexible connectors:

[0003] 1. Weighing and metering device: Generally composed of a container and a weighing sensor, etc., the legs at the bottom of the container are installed on the weighing sensor. When the medium enters and exits the container, the liquid level will change, and accordingly the weight of the device will also change. In order to enable the weight to be fully transmitted to the weighing sensor, the inlet and outlet of the container need to be flexibly connected, that is, the connection at the inlet and outlet can adapt to the displacement change in the vertical direction of the container, and this requires a flexible connector.

[0004] 2. Reaction tower: In the process of chemical production, the reaction tower is a key device. The internal chemical reaction will cause energy changes, resulting in phenomena such as thermal expansion and contraction and vibration of the tower body. In addition, for heavy reaction devices and surrounding facilities, the problem of foundation settlement also needs to be considered. If these phenomena are not effectively addressed, they will pose a serious threat to the stability and safety of the entire pipeline system. The application of a flexible connector becomes the key to solving this problem. By connecting the flexible connector between the reaction tower and the upstream and downstream pipelines, it can skillfully and efficiently adapt to the thermal deformation and vibration of the tower body. While the flexible connector absorbs the stress generated by thermal expansion and contraction, it can also effectively buffer the impact caused by vibration. This not only ensures the tightness of the pipeline system and avoids material leakage, but also greatly enhances the stability of the entire pipeline system, provides a solid guarantee for the safe and continuous operation of chemical production, and effectively promotes the efficiency and safety of the chemical production process.

[0005] 3. Large chemical storage tank: When storing different media and affected by the ambient temperature, the liquid level and the tank size will change. The flexible connector is installed at the inlet and outlet of the storage tank. When the tank body has a small displacement or deformation, it can still maintain a good connection state, enabling the material to enter and exit smoothly and avoiding problems such as pipeline rupture or leakage caused by rigid connection.

[0006] A flexible connector is made of flexible materials or structures, used to connect the pipelines of different devices, play a role in buffering the displacement and vibration between devices, prevent pipeline or equipment rupture and leakage, and ensure production continuity and safety.

[0007] Traditional flexible connectors generally adopt the form of hoses (such as metal bellows, composite hoses), and sometimes also adopt the form of a combination of a hollow rotary joint or a hollow spherical joint and a bent pipe.

[0008] Although the communicating vessel in the form of a hose has a certain pressure resistance to a certain extent, compared with a rigid pipe, its pressure resistance limit is relatively low. Under some high-pressure media, such as liquefied gas, steam, etc., the hose may be difficult to withstand, and there is a risk of rupture or leakage. And if the hose is frequently subjected to external forces such as stretching, compression, bending, vibration, etc. during use, the internal material structure is prone to fatigue damage, and problems such as cracks and delamination may also occur.

[0009] In addition, due to its own flexibility, especially for large-diameter hoses, when used in a weighing and metering device, it will cause great interference to the metering result and generate a large error.

[0010] For the communicating vessel in the form of a hollow rotary joint or a spherical joint, as Figure 1 shown, at least 3 combinations are required to achieve multi-directional degrees of freedom. And due to the need to add multiple elbow bends, a large flow resistance will be generated as a whole, and the installation space occupied is large, and dirt is likely to accumulate at the elbow bends during long-term use. Summary of the Invention

[0011] The purpose of the present invention is to provide a flexible communicating vessel, which has the characteristics of being able to adapt to the displacement and deformation of the device, small installation space occupation, and high pressure resistance limit.

[0012] The above technical purpose of the present invention is achieved through the following technical solutions: A flexible communicating vessel, comprising:

[0013] An intermediate connecting body, provided with a hole, and an end face sealing ring is arranged in the hole;

[0014] A fixing component, connected to the intermediate connecting body, and an activity cavity is formed between the fixing component and the intermediate connecting body;

[0015] An active connecting end, including an active part and a connecting part, the active part is movably connected in the activity cavity, and the end face sealing ring abuts against the active part to achieve sealing, and the connecting part communicates with the hole.

[0016] Preferably, the number of the fixing components, the active connecting ends, and the activity cavities are two respectively, and are arranged on both sides of the intermediate connecting body.

[0017] Preferably, the intermediate connecting body is annular, the fixing component includes a gland and a fixing bolt, the gland is arranged along the edge of the intermediate connecting body, and the fixing bolt fixes the gland on the intermediate connecting body.

[0018] Preferably, rolling ball receiving grooves are respectively arranged on one side of the intermediate connecting body and the gland facing the activity cavity, and rolling balls for reducing the friction force received by the active part are arranged in the rolling ball receiving grooves.

[0019] Preferably, the rolling ball receiving groove is annular, and the number of the rolling balls is multiple, and they are distributed along the rolling ball receiving groove.

[0020] Preferably, the intermediate connector and the gland near the outer edge of the movable cavity protrude into the movable cavity. The movable part has a sliding sealing surface and a sliding support surface. The sliding support surface is recessed inward, and the two sliding support surfaces are respectively in contact with the rolling balls.

[0021] Preferably, the cross-section of the end face sealing ring is U-shaped, including an annular sealing body. The inner wall of the sealing body is connected with two sealing strips, and the outer sides of the sealing strips have sealing surfaces in contact with the intermediate connector and the movable part.

[0022] Preferably, an elastic inner support skeleton is arranged inside the end face sealing ring. The cross-section of the elastic sealing skeleton is U-shaped. The elastic sealing skeleton abuts against the two sealing strips, making the sealing strips have a tendency to deflect outward.

[0023] Preferably, sealing ring accommodation grooves are formed along the inner walls on both sides of the hole. The number of end face sealing rings is two, which are respectively arranged in the sealing ring accommodation grooves.

[0024] A flexible connector assembly uses two flexible connectors as described in any one of the above. One is installed vertically and the other is installed horizontally, and the two are connected by a right-angle elbow pipe.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. It can skillfully and efficiently adapt to the vibration and deformation of the container device, maintain a good connection state, make the material flow in and out smoothly, and avoid pipeline rupture or leakage problems caused by rigid connection. This not only ensures the sealing performance of the pipeline system and avoids material leakage, but also greatly enhances the stability of the entire pipeline system, provides a solid guarantee for the safe and continuous operation of chemical production, and effectively promotes the efficiency and safety of the chemical production process;

[0027] 2. Compared with the general flexible hose-type connectors, the pressure resistance limit is relatively higher. In some high-pressure media, such as liquefied gas, steam, etc., this flexible connector can withstand, reducing the risk of rupture or leakage, and avoiding problems such as internal fatigue damage, crack appearance, and delamination existing in the flexible hose during use;

[0028] 3. Compared with large-diameter flexible hoses, when used in weighing and metering devices, the interference to the metering result is small, reducing the error;

[0029] 4. Compared with the traditional hollow rotary joint or spherical joint-type connectors, it does not require multiple elbow bends, has a small flow resistance, occupies a small installation space, and does not generate deposited dirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the prior art;

[0031] Figure 2 is the external view schematic diagram of the flexible connector of the present invention;

[0032] Figure 3 is the external view schematic diagram of the intermediate connecting body;

[0033] Figure 4 is the sectional view of the intermediate connecting body;

[0034] Figure 5 is the shape schematic diagram of the ball receiving groove;

[0035] Figure 6 is the external view schematic diagram and sectional view of the movable connection end;

[0036] Figure 7 is the external view schematic diagram and sectional view of the gland;

[0037] Figure 8 is the sectional view of the flexible connector of the present invention;

[0038] Figure 9 is the external view schematic diagram and sectional view of the end face sealing ring;

[0039] Figure 10 is Figure 9 the enlarged schematic diagram of part A in;

[0040] Figure 11 is the connection relationship schematic diagram of the flexible connector of the present invention and the weighing and metering device;

[0041] Figure 12 is the connection relationship schematic diagram of the flexible connector of the present invention and the reaction tower;

[0042] Figure 13 is the connection relationship schematic diagram of the flexible connector of the present invention and the large chemical storage tank.

[0043] In the figure, 1 is the intermediate connecting body; 11 is the hole; 12 is the sealing ring receiving groove; 13 is the static sealing surface; 14 is the annular protrusion; 2 is the fixing assembly; 21 is the gland; 22 is the fixing bolt; 23 is the fixing hole; 3 is the movable connection end; 31 is the movable part; 32 is the connecting part; 33 is the sliding sealing surface; 34 is the sliding support surface; 4 is the ball; 5 is the ball receiving groove; 6 is the end face sealing ring; 61 is the sealing body; 62 is the sealing strip; 63 is the sealing surface; 64 is the elastic sealing skeleton; 7 is the movable cavity. Specific embodiments

[0044] The present invention will be further described in detail below with reference to the accompanying drawings.

[0045] This specific embodiment is only an interpretation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art may make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0046] Embodiment: A flexible connector.

[0047] As Figure 2 shown, it includes an intermediate connecting body 1, and fixing components 2 and movable connection ends 3 are respectively connected to both sides of the intermediate connecting body 1. The fixing component 2 includes a gland 21 and a fixing bolt 22, and is used to connect the movable connection end 3 to the intermediate connecting body 1.

[0048] As Figure 3 and Figure 4 shown, the intermediate connecting body 1 is in a circular ring shape, and a hole 11 for the passage of materials is provided at its central part. Two annular seal ring accommodation grooves 12 are provided along the circumferential direction of the inner wall on both sides of the hole 11, and the bottom surface of the seal ring accommodation groove 12 is a static sealing surface 13. Annular protrusions 14 are provided at the edges on both sides of the intermediate connecting body 1. Annular ball accommodation grooves 5 are respectively provided along the circumferential direction on both sides of the intermediate connecting body 1.

[0049] As Figure 5 shown, a plurality of balls 4 are installed in the ball accommodation groove 5, and the plurality of balls 4 are arranged in a ring along the ball accommodation groove 5.

[0050] As Figure 6 shown, the movable connection end 3 includes a circular ring-shaped movable part 31 and a cylindrical connecting part 32, and the connecting part 32 is used to connect various pipelines. The connecting part 32 can be connected to the pipeline in the form of direct welding, or a flange or thread can be reserved. The two sides of the movable part 31 have a sliding sealing surface 33 and a sliding support surface 34 from the inside to the outside, and the sliding support surface 34 is recessed inward.

[0051] As Figure 7 shown, the gland 21 is also in a circular ring shape, and fixing holes 23 for connecting the fixing bolt 22 are provided along the circumferential direction of its edge. A ball accommodation groove 5 is also provided along the circumferential direction on the side of the gland 21 facing the intermediate connecting body 1.

[0052] As Figure 8As shown in the figure, movable connection ends 3 and fixed components 2 are connected to both sides of the intermediate connector 1. The gland 21 of the fixed component 2 is fixedly connected to both sides of the intermediate connector 1 through fixing bolts 22. An activity cavity 7 is formed between the gland 21 and the intermediate connector 1, and the movable part 31 of the movable connection end 3 is connected in the activity cavity 7. The intermediate connector 1 and the gland 21 bulge outward on the side facing the activity cavity 7 and located between the annular protrusion 14 and the rolling ball 4. Rolling balls 4 are installed in the rolling ball receiving grooves 5 on the intermediate connector 1 and the gland 21, and the rolling balls 4 are in contact with the sliding support surface 34 to reduce the frictional force when the movable connection end 3 moves. When the movable connection end 3 is displaced, the connecting part 32 is always in communication with the hole 11. End face sealing rings 6 are respectively installed in each sealing ring receiving groove 12.

[0053] As Figure 9 shown, the end face sealing ring 6 is in a ring shape.

[0054] As Figure 10 shown, the cross-section of the end face sealing ring 6 is U-shaped, including a sealing body 61. Sealing strips 62 are connected to both sides of the sealing body 61, and a sealing surface 63 is provided on the outer side of the sealing strips 62. After the end face sealing ring 6 is installed, the sealing surface 63 abuts against the static sealing surface 13 and the sliding sealing surface 33. An elastic sealing skeleton 64 is installed inside the end face sealing ring 6, and the cross-section of the elastic sealing skeleton 64 is also U-shaped and abuts against the two sealing strips 62, so that the sealing strips 62 have a tendency to deflect outward.

[0055] Usage method:

[0056] As Figure 11 shown, when applying the flexible connector of the present invention to a weighing and metering device, a flexible connector is vertically installed at the top inlet and the bottom outlet of the weighing and metering device respectively. One ends of the two flexible connectors are respectively connected to the inlet and outlet of the metering tank of the weighing and metering device through right-angle elbows, and the other ends are respectively connected to the inlet pipe and the outlet pipe. The metering tank used in the weighing and metering device only generates displacement in the up and down directions. When it floats up and down, it drives the right-angle elbow to float up and down, and the movable connection end 3 floats up and down at the same time, thereby keeping the straight pipe stationary and not affecting the feeding and discharging.

[0057] As Figure 12As shown in the figure, when the flexible connector of the present invention is applied to a reaction tower, two flexible connectors are respectively installed at the top feed inlet, the side feed inlet, and the bottom discharge outlet of each reaction tower, one of which is installed vertically and the other horizontally. The two flexible connectors are connected by a right-angle elbow pipe, one of the flexible connectors is connected to the reaction tower, and the other is connected to a straight pipe. When the reaction tower is in use, the flexible connector can cleverly and efficiently adapt to the thermal deformation and vibration of the tower body. While absorbing the stress generated by thermal expansion and contraction, the flexible connector can also effectively buffer the impact caused by vibration. This not only ensures the tightness of the pipeline system and avoids material leakage, but also greatly enhances the stability of the entire pipeline system, provides a solid guarantee for the safe and continuous operation of chemical production, and effectively promotes the efficiency and safety of the chemical production process.

[0058] As Figure 13 shown in the figure, when the flexible connector of the present invention is applied to a large chemical storage tank, two flexible connectors are respectively installed on the inlet and outlet pipelines, one of which is installed vertically and the other horizontally. The two flexible connectors are connected by a right-angle elbow pipe, one of the flexible connectors is connected to the large chemical storage tank, and the other is respectively connected to the feed pipe and the discharge pipe. When the large chemical storage tank stores different media and is affected by the ambient temperature, the liquid level and the tank body size will change, generating two displacements in the vertical and horizontal directions. The first flexible connector is used to overcome the displacement in the horizontal direction, and the second flexible connector is used to overcome the displacement in the vertical direction to ensure that the feed pipe and the discharge pipe do not shake during use.

Claims

1. A flexible communicating vessel, characterized in that: include: The intermediate connecting body (1) is provided with a hole (11), and an end face sealing ring (6) is arranged in the hole (11); A fixed component (2) is connected to the intermediate connecting body (1), and an active cavity (7) is formed between the fixed component (2) and the intermediate connecting body (1); The movable connection end (3) comprises a movable part (31) and a connecting part (32); the movable part (31) is movably connected in the movable cavity (7); an end face sealing ring (6) abuts against the movable part (31) to achieve sealing; and the connecting part (32) is connected to the hole (11).

2. A flexible communicating vessel according to claim 1, characterized in that: The number of the fixed component (2), the movable connection end (3) and the movable cavity (7) are respectively two, and they are arranged on both sides of the middle connecting body (1).

3. A flexible communicating vessel according to claim 1, characterized in that: The intermediate connector (1) is annular, and the fixing assembly (2) comprises a pressure cover (21) and a fixing bolt (22). The pressure cover (21) is arranged along the edge of the intermediate connector (1), and the fixing bolt (22) fixes the pressure cover (21) on the intermediate connector (1).

4. A flexible communicating vessel according to claim 3, characterized in that: The intermediate connecting body (1) and the pressure cover (21) are respectively provided with a ball receiving groove (5) on one side facing the movable cavity (7), and a ball (4) is arranged in the ball receiving groove (5) for reducing the friction force on the movable part (31).

5. A flexible communicating vessel according to claim 4, characterized in that: The rolling ball receiving groove (5) is annular, and the number of the rolling balls (4) is multiple and distributed along the rolling ball receiving groove (5).

6. A flexible communicating vessel according to claim 3, characterized in that: The intermediate connecting body (1) and the pressure cover (21) near the outer edge of the movable cavity (7) protrude into the movable cavity (7), and the movable part (31) has a sliding sealing surface (63) (33) and a sliding support surface (34), the sliding support surface (34) is recessed inward, and the two sliding support surfaces (34) are in contact with the rolling balls (4) respectively.

7. A flexible communicating vessel according to claim 1, characterized in that: The cross section of the end face sealing ring (6) is U-shaped and comprises an annular sealing body (61). The inner wall of the sealing body (61) is connected to two sealing strips (62). The outer side of the sealing strip (62) has a sealing surface (63) in contact with the intermediate connecting body (1) and the movable part (31).

8. A flexible communicating vessel according to claim 7, characterized in that: An elastic inner support frame is arranged inside the end face sealing ring (6). The cross section of the elastic sealing frame (64) is U-shaped. The elastic sealing frame (64) abuts against the two sealing strips (62), so that the sealing strips (62) have a tendency to deviate outwards.

9. A flexible communicating vessel according to claim 8, characterized in that: Sealing ring accommodating grooves (12) are provided along the inner wall of both sides of the hole (11), and two end face sealing rings (6) are respectively disposed in the sealing ring accommodating grooves (12).

10. A flexible communicating vessel assembly, characterized in that: Two flexible communicating vessels as described in any one of claims 1 to 9 are used, one of which is installed vertically and the other is installed horizontally, and the two are connected by a right-angle elbow.

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