High-temperature and high-pressure container and rotary sealing device thereof

Abstract

The utility model discloses a high-temperature and high-pressure container and a rotary sealing device thereof. The rotary sealing device comprises a motor mounting base, a flange sealing disc fixedly arranged at one end of the motor mounting base, a rotating shaft with one end penetrating through the flange sealing disc and extending into the motor mounting base, and a magnetic fluid sealing assembly arranged in the motor mounting base and fixedly connected with the flange sealing disc. The magnetofluid sealing assembly comprises magnetofluid rotationally arranged on the rotating shaft in a sleeving mode and a cooling ring fixedly arranged at one end of the magnetofluid, and magnetic force generated by the magnetofluid can resist the pressure difference between the two sides of the flange sealing disc and is used for sealing a gap between the rotating shaft and the flange sealing disc so as to achieve high-pressure sealing. And the cooling medium in the cooling ring is used for cooling the magnetofluid, so that the influence of temperature on the magnetofluid sealing effect is reduced. Therefore, the sealing effect of the rotary sealing device can be improved in a high-pressure environment.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature and high-pressure containers, in particular to a high-temperature and high-pressure container and a rotary sealing device thereof. Background Art

[0002] Due to the demanding working conditions, constant high temperature and high pressure must be maintained during the working process, which places high demands on the sealing of high temperature and high pressure containers. The sealing effect directly affects the operation of high temperature and high pressure containers, such as production suspension due to leakage, and even serious safety accidents. Therefore, it is particularly necessary to optimize the sealing structure of high temperature and high pressure containers.

[0003] A rotating shaft is provided in the high-temperature and high-pressure container. The rotating shaft drives the wind wheel and other actuators to rotate relative to the container wall by rotating. The rotating shaft is usually provided with a rotating sealing device. The sealing effect of the rotating sealing device is affected by the high-pressure environment. In addition, a large amount of heat will be generated during the high-speed rotation of the rotating shaft, resulting in excessive temperature of the rotating shaft. The high temperature may cause the rotating sealing device to expand and deform, seriously affecting the sealing effect of the rotating sealing device. Utility Model Content

[0004] The utility model aims to provide a high-temperature and high-pressure container and a rotary sealing device thereof, which can utilize magnetic fluid for high-pressure sealing and utilize cooling ring for heat insulation, thereby solving the technical problem of poor sealing effect of the existing rotary sealing device.

[0005] In order to achieve the above-mentioned object, the utility model provides a rotary sealing device for a high-temperature and high-pressure container, comprising:

[0006] Motor mount;

[0007] A flange sealing disc, which is fixed to one end of the motor mounting base;

[0008] A rotating shaft, one end of which passes through the flange sealing disk and extends into the motor mounting seat;

[0009] The magnetic fluid sealing assembly is arranged in the motor mounting seat and is fixedly connected to the flange sealing disk; the magnetic fluid sealing assembly includes a magnetic fluid rotatably sleeved on the rotating shaft and a cooling ring fixedly arranged on one end of the magnetic fluid, the magnetic fluid is used to seal the gap between the rotating shaft and the flange sealing disk, and the cooling medium in the cooling ring is used to cool the magnetic fluid.

[0010] Preferably, a cooling cavity is formed in the cooling ring, and a liquid inlet joint and a liquid outlet joint are respectively fixed on two opposite sides of the cooling ring, the liquid inlet joint is connected with the liquid inlet of the cooling cavity, and the liquid outlet joint is connected with the liquid outlet of the cooling cavity; the cooling medium flowing into the cooling cavity from the liquid inlet joint exchanges heat with the magnetic fluid and flows out from the liquid outlet joint; the flange sealing disk is provided with a first avoidance hole and a second avoidance hole, the liquid inlet joint is axially embedded in the first avoidance hole, and the liquid outlet joint is axially embedded in the second avoidance hole.

[0011] Preferably, a positioning groove is provided on the side of the flange sealing disk facing the cooling ring, the positioning groove cooperates with the cooling ring hole axis, and the positioning groove is used to limit the position of the cooling ring.

[0012] Preferably, the cooling ring is provided with a plurality of mounting holes, the positioning groove is provided with a plurality of connecting holes, all the mounting holes and all the connecting holes are evenly distributed in a ring shape and are connected one by one, and the connected mounting holes and connecting holes are fixedly connected by connecting bolts.

[0013] Preferably, a rotary support is provided between the rotating shaft and the magnetic fluid, and the rotary support is used to support the rotating shaft to rotate relative to the magnetic fluid.

[0014] Preferably, it also includes:

[0015] A motor mounting plate, which is fixedly mounted on one end of the motor mounting seat away from the flange sealing disc;

[0016] The servo motor is fixed on the motor mounting plate; the main shaft of the servo motor passes through the motor mounting plate and is fixedly connected with the rotating shaft through a coupling.

[0017] Preferably, the motor mounting seat comprises a seat body, the seat body is cylindrical, and the side wall of the seat body is hollow.

[0018] Preferably, the motor mounting seat further comprises a connecting flange integrally fixed to one end of the seat body, and the connecting flange is in close contact with the end surface of the flange sealing disk.

[0019] Preferably, it also includes:

[0020] A temperature sensor, which is used to detect the temperature of the magnetic fluid;

[0021] A liquid inlet control valve, which is arranged at the liquid inlet joint of the cooling ring and is used to control the on and off of the liquid inlet joint;

[0022] The controller is connected to the temperature sensor and the liquid inlet control valve respectively. The controller is used to control the liquid inlet control valve to open when the temperature of the magnetic fluid exceeds a preset temperature according to the signal fed back by the temperature sensor.

[0023] The utility model also provides a high-temperature and high-pressure container, comprising the above-mentioned rotary sealing device.

[0024] Compared with the background technology, the rotary sealing device of the high-temperature and high-pressure container in the utility model is newly provided with a magnetic fluid sealing component, which is arranged in the motor mounting seat and is fixedly connected to the flange sealing disk, the flange sealing disk is fixedly arranged at one end of the motor mounting seat, and the magnetic fluid sealing component includes a magnetic fluid and a cooling ring, the magnetic fluid can be rotatably sleeved on the rotating shaft, one end of the rotating shaft passes through the flange sealing disk and extends into the motor mounting seat, and the magnetic force generated by the magnetic fluid can resist the pressure difference on both sides of the flange sealing disk to seal the gap between the rotating shaft and the flange sealing disk, thereby achieving high-pressure sealing. Furthermore, the cooling ring is fixedly arranged at one end of the magnetic fluid, and the cooling ring cools the magnetic fluid, cuts off the conduction of heat, prevents the various components in the magnetic fluid from being damaged due to excessive temperature, and reduces the influence of temperature on the sealing effect of the magnetic fluid. Therefore, the utility model can improve the sealing effect of the rotary sealing device under high-pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A front view of a rotary sealing device for a high-temperature and high-pressure container provided by an embodiment of the utility model;

[0027] Figure 2 for Figure 1 Left view of

[0028] Figure 3 for Figure 1 Right view of;

[0029] Figure 4 A schematic diagram of the pressure difference on both sides of a rotary sealing device for a high-temperature and high-pressure container provided by an embodiment of the utility model;

[0030] Figure 5 for Figure 1 Exploded diagram.

[0031] The reference numerals are as follows:

[0032] Motor mounting seat 1, flange sealing plate 2, rotating shaft 3, magnetic fluid sealing assembly 4, slewing support 5, motor mounting plate 6, servo motor 7, coupling 8 and wind wheel 9;

[0033] Seat body 11 and connecting flange 12;

[0034] A first avoidance hole 21, a second avoidance hole 22 and a positioning groove 23;

[0035] Magnetic fluid 41 and cooling ring 42;

[0036] Liquid inlet connector 421 and liquid outlet connector 422 . DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] The utility model discloses a rotary sealing device for a high temperature and high pressure container, as shown in the attached Figures 1 to 3 As shown, it includes a motor mounting seat 1, a flange sealing disc 2, a rotating shaft 3 and a magnetic fluid sealing assembly 4. The motor mounting seat 1 is fixedly arranged to provide support for the servo motor 7. The flange sealing disc 2 is fixedly arranged at one end of the motor mounting seat 1, and one end of the rotating shaft 3 passes through the flange sealing disc 2 and extends into the motor mounting seat 1. The other end of the rotating shaft 3 is equipped with a wind wheel 9, so that the servo motor 7 in the motor mounting seat 1 drives the wind wheel 9 to rotate. There is a pressure difference between the two ends of the rotating shaft 3. The side where the motor mounting seat 1 is installed is located at the normal pressure side, and the side where the wind wheel 9 is installed is the high pressure side. As shown in the attached figure, Figure 4 shown.

[0040] The magnetic fluid sealing assembly 4 is arranged in the motor mounting seat 1 and is fixedly connected to the flange sealing disk 2 to achieve the dual purposes of high-pressure sealing and cooling. The magnetic fluid sealing assembly 4 includes a magnetic fluid 41 and a cooling ring 42. The magnetic fluid 41 is rotatably sleeved on the rotating shaft 3. The magnetic fluid 41 is fixed with the flange sealing disk 2, and the rotating shaft 3 rotates relative to the magnetic fluid 41. The magnetic liquid in the magnetic fluid 41 will move in the non-uniform magnetic field under the action of the pressure difference. The magnetic force generated by the magnetic fluid 41 can counteract the pressure difference on both sides of the flange sealing disk 2 to seal the gap between the rotating shaft 3 and the flange sealing disk 2, thereby achieving high-pressure sealing.

[0041] The cooling ring 42 is fixed at one end of the magnetic fluid 41. The cooling medium in the cooling ring 42 circulates to take away the heat generated by the magnetic fluid 41, so that the cooling ring 42 cools down the magnetic fluid 41, cuts off the conduction of heat, prevents the components in the magnetic fluid 41 from being damaged due to excessive temperature, and reduces the influence of temperature on the sealing effect of the magnetic fluid 41.

[0042] In summary, the utility model improves the rotary sealing device of the high-temperature and high-pressure container and adds a magnetic fluid sealing component 4, which can not only achieve high-pressure sealing but also cut off heat conduction to improve the sealing effect of the rotary sealing device under high-pressure environment.

[0043] A cooling cavity is formed in the cooling ring 42, and the cooling cavity may be in a circular ring shape. Figure 5 As shown, two opposite sides of the cooling ring 42 are respectively fixed with a liquid inlet joint 421 and a liquid outlet joint 422. The liquid inlet joint 421 is connected to the liquid inlet of the cooling chamber, and the liquid outlet joint 422 is connected to the liquid outlet of the cooling chamber. The liquid inlet and liquid outlet of the cooling chamber are independent of each other to avoid mixing of cooling media of different temperatures and affecting the cooling effect. The liquid inlet joint 421 and the liquid outlet joint 422 are symmetrically arranged on both sides of the cooling ring 42, so that the low-temperature coolant flowing into the cooling ring 42 is divided into two paths to flow to the liquid outlet joint 422, the cooling paths are increased, the cooling efficiency is improved, and the cooling effect is better. During cooling, the low-temperature cooling medium first flows into the cooling chamber from the liquid inlet joint 421. After heat exchange with the magnetic fluid 41, the temperature of the low-temperature cooling medium rises and becomes a high-temperature cooling medium. The high-temperature cooling medium then flows out from the liquid outlet joint 422.

[0044] In addition, it should be noted that the connecting ends of the liquid inlet connector 421 and the liquid outlet connector 422 are bent along the axial direction of the rotating shaft 3 toward the direction close to the magnetic fluid 41, and the distance between the connecting ends of the liquid inlet connector 421 and the liquid outlet connector 422 is greater than the diameter of the connecting flange 12 of the motor mounting base 1, so as to avoid assembly interference with the motor mounting base 1 due to the small distance between the liquid inlet connector 421 and the liquid outlet connector 422.

[0045] In order to ensure that the flange sealing disc 2 is in close contact with the motor mounting seat 1, the flange sealing disc 2 is provided with a first avoidance hole 21 and a second avoidance hole 22, the liquid inlet joint 421 is axially embedded in the first avoidance hole 21, and the liquid outlet joint 422 is axially embedded in the second avoidance hole 22, so as to avoid the gap between the flange mounting disc and the motor mounting seat 1 being too large due to the installation of the liquid inlet joint 421 or the liquid outlet joint 422, and ensure the compact structure of the magnetic fluid sealing assembly 4. The first avoidance hole 21 and the second avoidance hole 22 are symmetrically arranged on both sides of the flange sealing disc 2, and both are waist-shaped holes penetrating along the thickness direction of the flange sealing disc 2.

[0046] A positioning groove 23 is provided on the side of the flange sealing disc 2 facing the cooling ring 42. The positioning groove 23 cooperates with the hole axis of the cooling ring 42. The positioning groove 23 is used to limit the position of the cooling ring 42, ensuring that the flange sealing disc 2 and the cooling ring 42 can remain coaxial during installation, and facilitating and quickly installing the cooling ring 42. The positioning groove 23 can be a cylindrical groove, but is not limited thereto, and can be adjusted according to the cross-sectional shape of the cooling ring 42.

[0047] The cooling ring 42 is provided with a plurality of mounting holes, and the positioning groove 23 is provided with a plurality of connecting holes. All mounting holes and all connecting holes are evenly distributed in an annular shape, and all mounting holes are connected with all connecting holes in a one-to-one correspondence. The connected mounting holes and connecting holes are fixedly connected by connecting bolts, that is, the cooling ring 42 and the flange sealing disk 2 are detachably connected by connecting bolts. Of course, the installation method between the cooling ring 42 and the flange sealing disk 2 is not limited to this. For example, the cooling ring 42 can be directly welded to the flange sealing disk 2, and the purpose of the utility model can still be achieved.

[0048] Considering the relative rotation of the rotating shaft 3 and the magnetic fluid 41, a slewing support 5 is provided between the rotating shaft 3 and the magnetic fluid 41, and the slewing support 5 is used to support the rotating shaft 3 to rotate relative to the magnetic fluid 41. The slewing support 5 can be a bearing, but is not limited thereto.

[0049] The rotary sealing device further includes a motor mounting plate 6 and a servo motor 7. The motor mounting plate 6 is in the shape of a disc and is fixedly mounted on one end of the motor mounting seat 1 away from the flange sealing plate 2. The servo motor 7 is fixedly mounted on the motor mounting plate 6 so that the servo motor 7 is fixed to the motor mounting seat 1 through the motor mounting plate 6. The motor mounting plate 6 can be fixed to the end surface of the motor mounting seat 1 by fastening screws. Of course, the fixing method of the motor mounting plate 6 is not limited thereto. The main shaft of the servo motor 7 passes through the motor mounting plate 6, and the main shaft is fixedly connected to the rotating shaft 3 through the coupling 8, so that the servo motor 7 drives the rotating shaft 3 to rotate.

[0050] The motor mounting seat 1 includes a seat body 11, which is cylindrical and used to connect the motor mounting plate 6 and the flange sealing plate 2. A receiving cavity is provided in the center of the motor mounting seat 1 to accommodate the magnetic fluid sealing assembly 4, the coupling 8 and part of the rotating shaft 3. The side wall of the seat body 11 is hollow, and a plurality of weight-reducing holes are provided on the side wall to reduce the weight of the motor mounting seat 1.

[0051] The motor mounting seat 1 further includes a connecting flange 12 integrally fixed to one end of the seat body 11, and the connecting flange 12 is in close contact with the end surface of the flange sealing disk 2 to ensure reliable connection between the motor mounting seat 1 and the flange sealing disk 2. Specifically, the connecting flange 12 and the flange sealing disk 2 are fixed together by a plurality of connecting bolts, and all the connecting bolts are evenly distributed in a circular ring shape, so that the motor mounting seat 1 is evenly stressed.

[0052] The rotary sealing device also includes a temperature sensor, a liquid inlet control valve and a controller. The temperature sensor is used to detect the temperature of the magnetic fluid 41. The liquid inlet control valve is arranged at the liquid inlet joint 421 of the cooling ring 42 to control the opening and closing of the liquid inlet joint 421. The liquid inlet control valve can be a solenoid valve. The controller is connected to the temperature sensor and the liquid inlet control valve respectively. When the temperature sensor detects that the temperature of the magnetic fluid 41 exceeds the preset temperature, the temperature sensor feeds back a signal to the controller, and the controller performs judgment processing after receiving the signal. The controller sends a control signal to the liquid inlet control valve to control the liquid inlet control valve to automatically open, and the low-temperature cooling medium flows into the cooling ring 42 along the liquid inlet joint 421 to cool the magnetic fluid 41. On the contrary, when the temperature sensor detects that the temperature of the magnetic fluid 41 exceeds the preset temperature, the controller controls the liquid inlet cooling valve to automatically close according to the signal fed back by the temperature sensor, which is beneficial to energy saving. The utility model can automatically adjust the working state of the cooling ring 42 according to the temperature of the magnetic fluid 41, avoid the temperature of the magnetic fluid 41 being too high or too low, and ensure that the magnetic fluid 41 works more stably and has a better sealing effect.

[0053] It should be noted that the controller includes a signal receiving unit, a signal judging unit and a signal sending unit. The signal receiving unit is used to receive the electrical signal sent by the detection components such as the temperature sensor. The signal judging unit and the signal receiving unit are electrically connected so that the signal judging unit is used to judge whether the signal received by the signal receiving unit is a trigger signal. The signal sending unit and the signal judging unit are electrically connected so that the signal sending unit sends the judgment signal generated by the signal judging unit to the execution components such as the liquid inlet control valve. The specific setting methods of the signal receiving unit, the signal judging unit and the signal sending unit can refer to the prior art; in the present utility model, only the application scenarios of the above three are changed, and no substantial improvement is made thereto. Obviously, the controller with this structure is widely used in existing automatic control equipment, such as MCU, DSP or single-chip microcomputer. The key point of the present utility model is that the controller combines the liquid inlet control valve and the temperature sensor.

[0054] The embodiment of the utility model also discloses a high-temperature and high-pressure container, comprising the above-mentioned rotary sealing device.

[0055] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0056] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A rotary sealing device for a high temperature and high pressure container, characterized in that: include: Motor mounting bracket (1); A flange sealing disc (2) fixedly mounted on one end of the motor mounting seat (1); A rotating shaft (3), one end of which passes through the flange sealing disc (2) and extends into the motor mounting seat (1); A magnetic fluid sealing assembly (4) is disposed in the motor mounting seat (1) and is fixedly connected to the flange sealing disk (2); the magnetic fluid sealing assembly (4) comprises a magnetic fluid (41) rotatably sleeved on the rotating shaft (3) and a cooling ring (42) fixedly disposed on one end of the magnetic fluid (41); the magnetic fluid (41) is used to seal the gap between the rotating shaft (3) and the flange sealing disk (2); and the cooling medium in the cooling ring (42) is used to cool the magnetic fluid (41).

2. The rotary sealing device for a high-temperature and high-pressure container according to claim 1, characterized in that: A cooling cavity is formed in the cooling ring (42), and a liquid inlet joint (421) and a liquid outlet joint (422) are fixedly provided on two opposite sides of the cooling ring (42), respectively; the liquid inlet joint (421) is communicated with the liquid inlet of the cooling cavity, and the liquid outlet joint (422) is communicated with the liquid outlet of the cooling cavity; the cooling medium flowing into the cooling cavity from the liquid inlet joint (421) undergoes heat exchange with the magnetic fluid (41) and then flows out from the liquid outlet joint (422); the flange sealing disk (2) is provided with a first avoidance hole (21) and a second avoidance hole (22); the liquid inlet joint (421) is axially embedded in the first avoidance hole (21), and the liquid outlet joint (422) is axially embedded in the second avoidance hole (22).

3. The rotary sealing device for a high-temperature and high-pressure container according to claim 2, characterized in that: A positioning groove (23) is provided on the side of the flange sealing disk (2) facing the cooling ring (42), the positioning groove (23) cooperates with the hole axis of the cooling ring (42), and the positioning groove (23) is used to limit the position of the cooling ring (42).

4. The rotary sealing device for a high-temperature and high-pressure container according to claim 3, characterized in that: The cooling ring (42) is provided with a plurality of mounting holes, and the positioning groove (23) is provided with a plurality of connecting holes. All of the mounting holes and all of the connecting holes are evenly distributed in a ring shape and are connected one by one. The connected mounting holes and connecting holes are fixedly connected by connecting bolts.

5. The rotary sealing device for a high-temperature and high-pressure container according to any one of claims 1 to 4, characterized in that: A slewing support (5) is provided between the rotating shaft (3) and the magnetic fluid (41), and the slewing support (5) is used to support the rotating shaft (3) to rotate relative to the magnetic fluid (41).

6. The rotary sealing device for a high-temperature and high-pressure container according to any one of claims 1 to 4, characterized in that: Also includes: A motor mounting plate (6) fixedly mounted on an end of the motor mounting seat (1) away from the flange sealing plate (2); A servo motor (7) is fixedly mounted on the motor mounting plate (6); a main shaft of the servo motor (7) passes through the motor mounting plate (6) and is fixedly connected to the rotating shaft (3) via a coupling (8).

7. The rotary sealing device for a high-temperature and high-pressure container according to any one of claims 1 to 4, characterized in that: The motor mounting seat (1) comprises a seat body (11), the seat body (11) is cylindrical, and the side wall of the seat body (11) is hollow.

8. The rotary sealing device for a high-temperature and high-pressure container according to claim 7, characterized in that: The motor mounting seat (1) further comprises a connecting flange (12) integrally fixed to one end of the seat body (11), wherein the connecting flange (12) is in close contact with the end surface of the flange sealing disk (2).

9. The rotary sealing device for a high-temperature and high-pressure container according to any one of claims 1 to 4, characterized in that: Also includes: A temperature sensor, used to detect the temperature of the magnetic fluid (41); A liquid inlet control valve, which is provided at the liquid inlet joint (421) of the cooling ring (42) and is used to control the on / off state of the liquid inlet joint (421); A controller is connected to the temperature sensor and the liquid inlet control valve respectively, and is used to control the liquid inlet control valve to open when the temperature of the magnetic fluid (41) exceeds a preset temperature according to a signal fed back by the temperature sensor.

10. A high temperature and high pressure container, characterized in that: A rotary sealing device comprising any one of claims 1 to 9.

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