阅读说明：本技术 用于剖分环形快开盲板的转盘推拉式启闭装置 (Rotary table push-pull opening and closing device for subdividing annular quick-opening blind plate ) 是由 陈平 汪朝阳 宁志星 于 2018-08-17 设计创作，主要内容包括：本发明提供一种用于剖分环形快开盲板的转盘推拉式启闭装置,通过该启闭装置能够通过来回移动撑杆带动剖分环启闭门盖。具体为：转盘的一侧端面上加工有推力槽,旋转机构用于推动转盘绕其轴向转动；固定导轨圆盘的端面上加工有导向孔；定位套筒的圆周面上设置有径向安装孔。转盘、固定导轨圆盘和定位套筒同轴放置,其中固定导轨圆盘位于转盘和定位套筒之间,转盘上推力槽所在端面与固定导轨圆盘相对,且推力槽与固定导轨圆盘上的导向孔一一对应；固定导轨圆盘和定位套筒与门盖固接；撑杆的一端和与之对应的剖分环相连,另一端穿过定位套筒圆周面上的径向安装孔后与推力机构的一端相连,推力机构另一端穿过固定导轨圆盘上的导向孔位于推力槽中。(The invention provides a rotary table push-pull type opening and closing device for a split annular quick-opening blind plate, which can drive a split ring to open and close a door cover by moving a support rod back and forth. The method specifically comprises the following steps: a thrust groove is processed on one side end face of the rotary disc, and the rotary mechanism is used for pushing the rotary disc to rotate axially; a guide hole is processed on the end surface of the fixed guide rail disc; the circumferential surface of the positioning sleeve is provided with a radial mounting hole. The turntable, the fixed guide rail disc and the positioning sleeve are coaxially arranged, wherein the fixed guide rail disc is positioned between the turntable and the positioning sleeve, the end surface of the turntable where the thrust groove is positioned is opposite to the fixed guide rail disc, and the thrust groove corresponds to the guide holes in the fixed guide rail disc one by one; the fixed guide rail disc and the positioning sleeve are fixedly connected with the door cover; one end of the stay bar is connected with the corresponding split ring, the other end of the stay bar penetrates through the radial mounting hole on the circumferential surface of the positioning sleeve and then is connected with one end of the thrust mechanism, and the other end of the thrust mechanism penetrates through the guide hole on the fixed guide rail disc and is positioned in the thrust groove.)

1. The rotary table push-pull type opening and closing device is used for dividing the annular quick-opening blind plate, a lock ring of the annular lock type quick-opening blind plate is divided into more than two arc-shaped sections along the circumferential direction, and each arc-shaped section is a dividing ring (1); the locking ring is mounted between the hubbed flange (15) and the door cover (16); characterized in that, the headstock gear includes: the device comprises a turntable (4), a fixed guide rail disc (10), a positioning sleeve (6), a rotating mechanism, support rods (2) which correspond to the subdivision rings (1) one by one and thrust mechanisms which correspond to the support rods (2) one by one;

arc thrust grooves which correspond to the support rods (2) one by one are machined in the end face of one side of the rotary table (4), the arc thrust grooves are eccentrically arranged, and the two ends of the arc thrust grooves are located at positions of the rotary table (4) with different diameters; the rotating mechanism is connected with the rotating disc (4) and is used for pushing the rotating disc (4) to rotate around the axial direction of the rotating disc;

radial guide holes corresponding to the support rods (2) one by one are processed on the end face of the fixed guide rail disc (10);

the circumferential surface of the positioning sleeve (11) is provided with radial mounting holes which correspond to the support rods (2) one by one;

the whole connection relationship is as follows: the turntable (4), the fixed guide rail disc (10) and the positioning sleeve (11) are coaxially arranged, wherein the fixed guide rail disc (10) is positioned between the turntable (4) and the positioning sleeve (11), the end face of the turntable (4) where the arc-shaped thrust groove is located is opposite to the fixed guide rail disc (10), and the arc-shaped thrust groove corresponds to the guide holes in the fixed guide rail disc (10) one by one; the fixed guide rail disc (10) and the positioning sleeve (11) are fixedly connected with the door cover (16);

one end of the support rod (2) is connected with the corresponding split ring (1), the other end of the support rod penetrates through a radial mounting hole in the circumferential surface of the positioning sleeve (11) and then is connected with one end of the thrust mechanism, and the other end of the thrust mechanism penetrates through a guide hole in the fixed guide rail disc (10) and is positioned in the arc-shaped thrust groove; when the rotating mechanism pushes the turntable (4) to rotate around the axial direction of the turntable, the two side walls of the arc-shaped thrust groove push the thrust mechanism to move along the guide hole on the fixed guide rail disc (10), and then the support rod (2) pushes the splitting ring (1) connected with the support rod to move along the radial direction of the splitting ring.

2. The turntable push-pull opening and closing device for subdividing an annular quick-opening blind plate as recited in claim 1, wherein the thrust mechanism comprises: a pin (12), a thrust roller (8) and a guide roller (9);

the axis of the pin (12) is parallel to the axis of the turntable (4) and is perpendicular to the stay bar (2); one end of the stay bar (2) is connected with the corresponding split ring (1), and the other end of the stay bar penetrates through a radial mounting hole on the circumferential surface of the positioning sleeve (11) and a through hole at the end part of the pin (12) and then is pressed and positioned by a compression nut (13); the other end of the pin (12) is fixedly connected with a guide roller (9) and a thrust roller (8), wherein the thrust roller (8) is positioned in an arc-shaped thrust groove of the turntable (4), and when the turntable (4) rotates around the axial direction of the turntable, two side walls of the arc-shaped thrust groove push the thrust roller (8); the guide rollers (9) are positioned in the guide holes of the fixed guide rail disc (10).

3. The rotary table push-pull opening and closing device for subdividing an annular quick-opening blind plate according to claim 1 or 2, wherein the rotating mechanism comprises: a rotary arm lever (3) and a rotary arm shaft (5); the rotating arm shaft (5) is fixedly connected to the end face of the rotating disc (4) in a perpendicular mode, one end of the rotating arm rod (3) is connected with the rotating arm shaft (5), and the rotating arm rod (3) pushes the rotating disc (4) to rotate around the axial direction of the rotating disc.

4. The rotary table push-pull type opening and closing device for subdividing annular quick-opening blind plates as claimed in claim 1 or 2, characterized in that a sealing ring (14) is arranged in a groove at the bottom of the door cover (16) or on a groove of a flange of the high-neck flange (15), and a set floating distance exists between the initial installation position of the sealing ring (14) and the working position with internal pressure.

5. The rotary table push-pull opening and closing device for subdividing annular quick-opening blind plates as claimed in claim 1 or 2, wherein more than one positioning hole is circumferentially arranged on the end faces of the fixed guide rail disc (10) and the positioning sleeve (6), and the positioning holes are used for being matched with the positioning pins (6) to fixedly connect the fixed guide rail disc (10) and the positioning sleeve (6) with the door cover (16).

Technical Field

The invention relates to an opening and closing device, in particular to an opening and closing device for a quick-opening blind plate of a pressure container, and belongs to the technical field of quick-opening sealing.

Background

The quick-opening blind plate structure is a mechanical device which is arranged at the end part of a pressure container or a pressure pipeline to realize quick opening and closing, and is widely applied to the industrial fields of petroleum and natural gas, chemical industry, aerospace, electric power energy and the like. Compared with a bolt flange structure, the quick-opening blind plate structure is quicker in door cover opening and closing operation and is suitable for industrial application occasions where the door cover needs to be frequently assembled and disassembled.

The existing quick-opening blind plate structure mainly comprises various structural forms such as a tooth-engaging type, a buckling type, a hoop type, a ring locking type (including a split ring shape) and the like. If the quick-opening blind plate structure is applied to a long-distance pipeline filter and a ball receiving and dispatching cylinder device, structures such as a ring lock type structure, a hoop structure and the like are formed. From the view of assembly and disassembly convenience, the annular lock-shaped structure has the advantages of simple and convenient operation of opening and closing the blind plate door cover, simple and reasonable force bearing structure and the like, and is widely applied to the long-distance pipeline filter. But the application practice shows that some problems still exist in the structure, such as the phenomenon that the door cover is locked and cannot be opened when being opened, the structural design is not compact enough, and the like, and more importantly, the existing ring lock type quick opening structure adopts a structure that a notch is cut by an integral ring, and the two ends of the notch are connected with the door cover and a high neck through an opening and closing device (generally operated manually, similar to a wrench rotating mechanism) by a mechanism so as to bear the axial acting force of the internal pressure; in the opening or closing process of the ring lock, radial size change is achieved mainly through integral deformation of the ring lock, however, along with the increase of the diameter or the internal pressure of the blind plate, the rigidity of the ring lock is larger and larger, acting force required for overcoming deformation is larger and larger, manual operation becomes difficult, a new problem exists in the design of the opening and closing device, and if an electric device is adopted for driving, the complexity and the cost of a mechanism are increased. The split annular ring lock is formed by cutting an integral circular ring into a certain number (weight) of split rings according to the diameter, connecting the split rings by using a support rod, and completing the opening and closing effect of the ring lock by moving (pushing and pulling) the split rings back and forth along the radial direction through the support rod. The integral ring is divided into blocks, so that the opening and closing process can be completed only by overcoming the weight and the friction resistance of the split ring theoretically, the opening and closing force is reduced compared with that of an integral lock ring structure, and the technical problem to be reasonably solved is how to reasonably move the stay bar back and forth and drive the split ring to open and close the door cover.

Disclosure of Invention

In view of the above, the present invention provides a push-pull opening and closing device of a turntable for dividing an annular quick-opening blind plate, through which a dividing ring can be driven to open and close a door cover by moving a stay rod back and forth.

The lock ring of the ring lock type quick-opening blind plate is divided into more than two arc sections along the circumferential direction, and each arc section is a split ring; the locking ring is arranged between the high-neck flange and the door cover; a carousel plug-type headstock gear for subdividing annular quick-opening blind plate includes: the positioning device comprises a turntable, a fixed guide rail disc, a positioning sleeve, a rotating mechanism, support rods which are in one-to-one correspondence with the subdivision rings and thrust mechanisms which are in one-to-one correspondence with the support rods;

arc thrust grooves which correspond to the support rods one by one are machined in the end face of one side of the rotary table, the arc thrust grooves are eccentrically arranged, and the two ends of the arc thrust grooves are located at positions of the rotary table with different diameters; the rotating mechanism is connected with the rotating disc and used for pushing the rotating disc to rotate around the axial direction of the rotating disc;

radial guide holes corresponding to the support rods one to one are processed on the end face of the fixed guide rail disc;

the circumferential surface of the positioning sleeve is provided with radial mounting holes which correspond to the support rods one to one;

the whole connection relationship is as follows: the turntable, the fixed guide rail disc and the positioning sleeve are coaxially arranged, wherein the fixed guide rail disc is positioned between the turntable and the positioning sleeve, the end surface of the turntable, where the arc-shaped thrust groove is positioned, is opposite to the fixed guide rail disc, and the arc-shaped thrust grooves correspond to the guide holes in the fixed guide rail disc one by one; the fixed guide rail disc and the positioning sleeve are fixedly connected with the door cover;

one end of the support rod is connected with the corresponding split ring, the other end of the support rod penetrates through a radial mounting hole in the circumferential surface of the positioning sleeve and then is connected with one end of the thrust mechanism, and the other end of the thrust mechanism penetrates through a guide hole in the fixed guide rail disc and is positioned in the arc-shaped thrust groove; when the rotating mechanism pushes the rotating disc to rotate axially, the two side walls of the arc-shaped thrust groove push the thrust mechanism to move along the guide hole in the fixed guide rail disc, and then the split ring connected with the thrust mechanism is pushed to move along the radial direction of the split ring through the support rod.

The thrust mechanism includes: a pin, a thrust roller and a guide roller;

the axis of the pin is parallel to the axis of the rotary disc and is perpendicular to the stay bar; one end of the stay bar is connected with the corresponding split ring, and the other end of the stay bar penetrates through a radial mounting hole in the circumferential surface of the positioning sleeve and a through hole in the end part of the pin and is pressed and positioned through a compression nut; the other end of the pin is fixedly connected with a guide roller and a thrust roller, wherein the thrust roller is positioned in an arc-shaped thrust groove of the turntable, and when the turntable rotates axially, two side walls of the arc-shaped thrust groove push the thrust roller; the guide rollers are positioned in the guide holes of the fixed guide rail disc.

The rotating mechanism includes: a swivel arm lever and a swivel arm shaft; the rotating arm shaft is vertically and fixedly connected to the end face of the rotating disc, one end of the rotating arm rod is connected with the rotating arm shaft, and the rotating arm rod pushes the rotating disc to rotate axially.

Has the advantages that:

(1) the opening and closing device realizes the door opening and closing process by pushing and pulling the supporting rod connected with the subdivision ring through the turntable, and can effectively reduce the opening and closing force.

(2) The sealing ring is arranged in the groove at the bottom of the door cover or in the groove on the flange step of the high-neck flange, a certain floating distance exists between the initial installation position of the sealing ring and the working position with internal pressure, and therefore, after the working pressure is relieved, the sealing ring does not have the function of jacking force on the door cover and the ring lock, and therefore, the push-pull force of the stay bar and the subdivision ring only needs to mainly overcome the weight (the weight of the subdivision ring and the stay bar) and the friction resistance caused by the weight as the main force, and the size range of opening and closing the large-scale and high-pressure acting door cover can be greatly enlarged by adopting a.

(3) The thrust roller and the guide roller can mutually balance the received acting force, so that the axial direction of the pin is not deflected when being pushed, and the pin rolls to play a role in reducing friction.

Drawings

Fig. 1 is a schematic view of the overall installation of the rotary table push-pull opening and closing device on a quick-opening blind plate in embodiment 1 (at this time, the quick-opening blind plate is in an open state);

fig. 2 and 3 are partial detailed schematic views of the rotary table push-pull opening and closing device in embodiment 1 (the quick-opening blind plate in fig. 2 is in a closed state);

FIG. 4 is a schematic structural view of a turntable;

FIG. 5 is a schematic structural view of a fixed guide track disc;

FIG. 6 is a schematic view of the positioning sleeve;

FIG. 7 is a schematic view of the mating of the fixed guide track disk and the turntable;

fig. 8 is a partial detailed schematic view of the rotary disk push-pull opening and closing device in embodiment 2.

Wherein: 1-splitting a ring; 2-a stay bar; 3-rotating the arm; 4-a turntable; 5-a swivel arm shaft; 6-positioning pins; 7-a set screw; 8-a thrust roller; 9-guide rollers; 10-fixing a guide rail disc; 11-a positioning sleeve; 12-pin; 13-a compression nut; 14-a sealing ring; 15-a hubbed flange; 16-a door cover; 17-an arc-shaped thrust slot; 18-pilot hole.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.