A horizontal installation tool and method for large pressure vessel elastic ring

Abstract

The application discloses a horizontal installation tool and method for a large pressure container elastic ring, which comprises a supporting and fixing module for fixedly connecting with the horizontal elastic ring and maintaining the roundness of the elastic ring, a posture adjusting module connected to the center of the supporting and fixing module for realizing the overall vertical overturning and gravity center leveling of the mutually fixedly connected elastic ring and the supporting and fixing module, a synchronous pushing module uniformly arranged near the end face of the cylinder flange for providing multiple uniformly distributed pushing forces so that the supporting and fixing module and the posture adjusting module after the elastic ring is assembled are uniformly stressed and pushed into the sealing groove of the cylinder flange, and a centering and fine adjustment module integrated on the supporting and fixing module for finely adjusting the radial position of the cylinder flange in the pushing process so that the gap between the elastic ring and the inner wall of the sealing groove of the cylinder flange is uniform. The application provides a reliable assembly mode to ensure that the elastic ring maintains the roundness, levelness and centering property during and after the installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure vessel manufacturing, and particularly relates to a horizontal installation tool and method for a large pressure vessel elastic ring. BACKGROUND

[0002] In the assembly of a large pressure vessel (such as some chemical vessels), a large elastic ring is often installed at a flange connection to achieve sealing. Generally, a large pressure vessel mainly comprises a left head assembly, a clamp assembly and a shell assembly, and an elastic ring is designed between the head flange and the cylinder flange, and O-ring seals are designed on the end face and the side face of the elastic ring. The elastic ring is placed in the sealing groove of the cylinder flange and is tightly fitted.

[0003] Such an elastic ring usually has the characteristics of large diameter, large weight and poor rigidity. In a horizontal installation state, the installation difficulty is extremely great. The traditional installation method mainly relies on hoisting, lever prying and manual adjustment, and has the following significant defects:

[0004] 1. Easy to lose roundness and get stuck: due to the poor rigidity of the elastic ring, uneven force is easily generated during hoisting, turning over and pushing, and the elastic ring is prone to lose roundness. When the elastic ring is pushed into the sealing groove of the cylinder flange, if the elastic ring loses roundness, is eccentric or the pushing around is not synchronized, the elastic ring will interfere with the groove wall, resulting in getting stuck. Once stuck, not only the installation fails, but also the expensive elastic ring and the flange sealing surface may be damaged.

[0005] 2. Difficulty in centering and leveling: after the elastic ring is turned over and stands up, the axis of the elastic ring needs to be strictly horizontal and centered with the cylinder flange hole. The traditional method lacks effective leveling and centering means, mainly relies on the experience and visual inspection of workers, and has low precision and poor consistency.

[0006] 3. Synchronization of pushing cannot be guaranteed: when the elastic ring is pushed into the sealing groove, uniform force needs to be applied around. The traditional method uses multiple jacks or lever prying which are manually operated, and it is difficult to guarantee the synchronization of pushing speed and force, which is the main reason for eccentric sticking.

[0007] 4. High operation risk and low efficiency: the above process usually needs the cooperation of multiple workers, relies on experience, and has personal and equipment safety risks, and the installation period is long and the quality is uncontrollable.

[0008] Therefore, a special installation tool is needed to systematically solve a series of problems such as roundness fixing, safe turning over, accurate leveling, synchronous pushing and dynamic fine adjustment of the large elastic ring in the horizontal installation.

[0009] The statements herein only provide background technology related to the present application, and do not necessarily constitute the prior art. SUMMARY

[0010] The application aims to provide a horizontal installation tool and method for elastic ring of large pressure vessel, which can realize mechanization and controllability of installation process, ensure the roundness, levelness and centration of elastic ring during the whole installation process, and push the elastic ring into the sealing groove uniformly and synchronously, thereby reducing the risk of jamming and improving the installation success rate, quality and efficiency.

[0011] To achieve the above-mentioned purpose, the application provides a horizontal installation tool for elastic ring of large pressure vessel, which is used for installing the elastic ring into the sealing groove of the cylinder flange of large pressure vessel, comprising:

[0012] A round supporting and fixing module is used for fixedly connecting with the horizontal elastic ring and maintaining the roundness thereof;

[0013] A posture adjusting module is connected to the center of the round supporting and fixing module, which is used for realizing the whole vertical overturning and gravity center leveling of the mutually fixedly connected elastic ring and round supporting and fixing module;

[0014] A synchronous pushing module is uniformly arranged near the end face of the cylinder flange, which is used for providing multiple uniformly distributed pushing forces to uniformly stress the round supporting and fixing module and posture adjusting module after assembling the elastic ring and push them into the sealing groove of the cylinder flange;

[0015] A centration fine adjustment module is integrated on the round supporting and fixing module, which is used for fine adjusting the radial position of the cylinder flange during the pushing process to keep the gap between the elastic ring and the inner wall of the sealing groove of the cylinder flange uniform.

[0016] Optionally, the round supporting and fixing module comprises:

[0017] A ring-shaped supporting plate and multiple supporting tubes and a collection plate integrally formed in the ring of the ring-shaped supporting plate; the multiple supporting tubes are arranged in a cross shape, one end of which is connected to the inner ring surface of the ring-shaped supporting plate and the other end of which is connected to the collection plate located at the center of the ring-shaped supporting plate; the ring-shaped supporting plate has a first supporting surface for supporting and abutting the elastic ring after installing the elastic ring;

[0018] A ring-shaped round supporting plate is concentrically arranged with the ring-shaped supporting plate and located on the first supporting surface of the ring-shaped supporting plate, and the outer diameter of the ring-shaped round supporting plate is smaller than the inner diameter of the elastic ring.

[0019] Optionally, a plurality of pressing plates are arranged on one side of the first supporting surface of the ring-shaped supporting plate;

[0020] The pressing plates are arranged at equal intervals along the ring-shaped first supporting surface, and the surface of each pressing plate is arranged separately and parallel to the first supporting surface of the ring-shaped supporting plate, and the elastic ring is accommodated in the interval space between the ring-shaped supporting plate and the pressing plate;

[0021] A first fastener is arranged between the annular support plate and the pressing plate, and the distance between the annular support plate and the pressing plate is reduced by tightening the first fastener to press the elastic ring in a direction perpendicular to the annular support plate and the pressing plate.

[0022] Optionally, the support and fixing module further comprises:

[0023] A plurality of second fasteners are evenly distributed along the inner circumferential surface of the annular support plate, and are vertically arranged through the inner and outer circumferential surfaces of the annular support plate. One end of the second fastener passing through the outer circumferential surface of the annular support plate is close to the inner profile surface of the elastic ring. The elastic ring is supported and fixed in each radial direction by rotating the plurality of second fasteners.

[0024] The outer profile surface of the elastic ring is close to the sealing groove of the flange. After the elastic ring is assembled into the sealing groove of the flange, the position of the elastic ring is adjusted by rotating the second fastener, so that the gap between the elastic ring and the inner wall of the sealing groove is uniform.

[0025] Optionally, the attitude adjusting module comprises a plurality of lifting rings, lifting rods and lifting lugs.

[0026] A plurality of lifting rings are symmetrically arranged on the second support surface of the annular support plate, which is opposite to the first support surface, for horizontal lifting and vertical overturning of the support and fixing module after the elastic ring is assembled.

[0027] The lifting rod is concentric with the annular support plate and is vertically arranged on the collection plate, and the lifting rod is arranged away from the elastic ring.

[0028] The lifting lug is arranged at one end of the lifting rod which is not connected to the collection plate, so as to adjust the center of gravity of the support and fixing module after the elastic ring is assembled, so that the first support surface of the annular support plate is parallel to the end surface of the flange to be installed.

[0029] Optionally, the attitude adjusting module further comprises a counterweight, and the counterweight is sleeved on the lifting rod for balance weight.

[0030] The lifting ring is provided with a plurality of groups, and two lifting rings in each group of lifting rings are distributed on the two ends of the second support surface along the radial direction.

[0031] Optionally, the synchronous advancing module comprises a plurality of triangular advancing frames which are symmetrically distributed on one side of the second support surface of the annular support plate and are symmetric to the vertical reference line of the annular support plate. Each triangular advancing frame comprises a vertical support and an inclined support which is arranged at an angle with the vertical support. The vertical reference line is a vertical axis of the annular support plate which is perpendicular to the ground and passes through the center of the annular support plate.

[0032] Two mechanical jacks are arranged on each vertical support at positions symmetrical to a horizontal reference line, and the top rod ends of the two mechanical jacks are respectively aligned with the second support surface of the ring-shaped support plate that has been leveled and aligned; the horizontal reference line is a horizontal axis that is perpendicular to the vertical reference line and passes through the center of the ring-shaped support plate;

[0033] The mechanical jacks connected on each vertical support are in communication connection with the synchronous control system to synchronously control the operation of the mechanical jacks to generate synchronous and equal pushing forces on the second support surface of the elastic ring and the support circle fixing module.

[0034] Optionally, the centering fine adjustment module is a third fastener that is vertically arranged through the inner and outer ring surfaces of the ring-shaped support circle plate, and one end of the third fastener that passes through the outer ring surface of the ring-shaped support circle plate is close to the inner wall of the cylinder flange;

[0035] By screwing the third fastener, the end of the third fastener that passes through the outer ring surface of the ring-shaped support circle plate contacts and abuts against the inner wall of the cylinder flange to adjust the radial gap between the sealing groove and the outer profile surface of the elastic ring.

[0036] The application also provides a use method of the elastic ring horizontal installation tool, which is based on the installation tool and comprises the following steps:

[0037] Step S1, clamping the elastic ring in the support circle fixing module and supporting the elastic ring;

[0038] Step S2, integrally lifting and vertically overturning the support circle fixing module with the clamped elastic ring, and adjusting the gravity center through the posture adjustment module to make the ring-shaped support plate parallel to the end surface of the cylinder flange to be installed;

[0039] Step S3, uniformly distributing the synchronous pushing modules along the circumference of the elastic ring;

[0040] Step S4, synchronously pushing the elastic ring and the whole assembly containing the support circle fixing module and the posture adjustment module into the sealing groove of the cylinder flange through the synchronous pushing module and the centering fine adjustment module, and performing real-time centering fine adjustment of the elastic ring;

[0041] Step S5, dismounting each module in the installation tool from the elastic ring.

[0042] Optionally, the step S1 comprises:

[0043] Hoisting the support circle fixing module above the elastic ring, and making the first support surface of the ring-shaped support plate adhere to the surface of the elastic ring, and making the inner ring surface of the elastic ring close to the outer ring surface of the ring-shaped support circle plate;

[0044] The first fastener is used to lock the pressing plate and the annular support plate, so as to clamp the elastic ring between the two;

[0045] The second fastener is screwed, the end of the second fastener is extended from the outer ring surface of the annular support plate and abuts against the inner contour surface of the elastic ring, and the roundness of the elastic ring is corrected and maintained from various directions by adjusting the second fastener which is uniformly distributed at multiple points;

[0046] The step S2 comprises:

[0047] The first hoisting equipment is used to connect at least two groups of lifting rings to horizontally lift the support circle fixing module after the elastic ring is assembled, and each group of lifting rings is provided with two lifting rings;

[0048] The hoisting equipment is disconnected from the two adjacent lifting rings on one side of the annular support plate, and the connection with the two lifting rings on the other side is kept, so that the support circle fixing module after the elastic ring is assembled and the posture adjusting module are vertically turned over by 90° in the air, and the side of the annular support plate provided with the elastic ring is turned to face the end surface of the flange of the cylinder;

[0049] After the turning over is completed, the second hoisting equipment is used to lift the lifting rod, the weight of the counterweight is adjusted to adjust the center of gravity and the posture of the support circle fixing module after the elastic ring is assembled and the posture adjusting module, and the first support surface of the annular support plate is parallel to the end surface of the flange of the cylinder to be installed;

[0050] The real-time centering fine adjustment of the elastic ring in the step S4 comprises:

[0051] When the elastic ring is pushed into the sealing groove of the flange of the cylinder, if there is a radial gap between the outer contour surface of the elastic ring and the inner wall of the sealing groove, the third fastener arranged at the position with uneven gap is screwed, and the end of the third fastener abuts against the inner wall of the flange of the cylinder;

[0052] And the second fastener arranged at the position with uneven gap is screwed, and the gap between the elastic ring and the inner wall of the sealing groove is further adjusted, so that the centering assembly of the elastic ring is ensured.

[0053] Compared with the prior art, the horizontal installation tool and the method for the elastic ring of the large pressure vessel have the following beneficial effects:

[0054] 1、The horizontal installation tool and the method for the elastic ring of the large pressure vessel provided by the application are used for solving the problem that the elastic ring is out of round due to the self weight and poor rigidity, and providing a stable basis for subsequent precise operation.

[0055] 2. The horizontal installation tool and method for the elastic ring of a large pressure vessel provided by the present application realizes stable and controllable 90° turning and accurate horizontal leveling of the heavy elastic ring through the specially designed turning lifting lug, counterweight and leveling lifting lug, thereby avoiding the deformation and risks that may be caused by the traditional lifting method.

[0056] 3. The horizontal installation tool and method for the elastic ring of a large pressure vessel provided by the present application ensures that the elastic ring is uniformly and synchronously pushed into the sealing groove through the circumferentially distributed multiple power devices (such as mechanical jacks), thereby completely eliminating the risks of tilting, eccentricity and seizure (jamming) caused by unilateral force and making the pushing process stable and controllable.

[0057] 4. The horizontal installation tool and method for the elastic ring of a large pressure vessel provided by the present application allows online and dynamic micro-adjustment of the radial position of the elastic ring during the pushing process through the second adjusting bolt integrated on the tool, thereby correcting the possible slight eccentricity in real time, ensuring that the circumferential gap between the elastic ring and the inner wall of the cylinder flange is always uniform and finally realizing high-precision centering assembly. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 Fig. 1 is a schematic view of the installation of the elastic ring of the present application in the cylinder flange;

[0059] Figure 2 Fig. 3 is a structural schematic view of the round supporting and fixing module of the present application;

[0060] Figure 3A Fig. 4 is a sectional view along the A-A direction; Figure 2

[0061] Figure 3B Fig. 5 is a sectional view along the B-B direction; Figure 2

[0062] Figure 3C Fig. 6 is a sectional view along the C-C direction; Figure 2

[0063] Figure 3D Fig. 7 is a sectional view along the D-D direction; Figure 2

[0064] Figure 4 Fig. 8 is a schematic view of the round supporting and fixing module of the present application after the elastic ring is suspended;

[0065] Figure 5 Fig. 9 is a side view of the synchronous pushing module of the present application;

[0066] Figure 6 Fig. 10 is a schematic view of the force received by the annular supporting plate of the synchronous pushing module of the present application. DETAILED DESCRIPTION​​​​

[0067] The present application will be further described in connection with the preferred embodiments with reference to the drawings described below. Figures 1-6 The advantages and features of the present application will become more apparent after a reading of the following explanations in conjunction with the following drawings. It is to be understood that the figures are shown in a highly simplified form and are not to scale for the purpose of facilitating a convenient and clear presentation of the embodiments of the present application. For the purposes of the present application, its nature, character and advantages will be more apparent from the following drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are merely intended to facilitate the understanding and reading of the content disclosed by persons skilled in the art, and are not intended to limit the present application, which therefore does not have any technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, shall still fall within the scope of the technical content disclosed by the present application.

[0068] The present application provides a horizontal installation tool for a large pressure vessel elastic ring, which is used to install a large elastic ring 200 into a sealing groove 400 of a cylinder flange 100 of a large pressure vessel as shown in Figure 1 , the connection of the cylinder flange 100 is clamped by a clamp 300, and a sealing element 410 is further arranged between the elastic ring 200 and the sealing groove 400. The application scenario of the installation tool includes clamping and supporting the elastic ring 200, lifting and turning, aligning and pushing to the cylinder flange 100, and installing into the sealing groove 400 of the cylinder flange 100. As shown in Figures 2-6 , the horizontal installation tool includes: a supporting circle fixing module for fixedly connecting with the horizontal elastic ring 200 and maintaining the roundness thereof; a posture adjusting module connected to the center of the supporting circle fixing module for realizing overall turning and gravity center leveling of the mutually fixedly connected elastic ring 200 and the supporting circle fixing module; a synchronous pushing module uniformly arranged near the end face of the cylinder flange 100 for providing multiple uniformly distributed pushing forces to uniformly stress the supporting circle fixing module and the posture adjusting module after the elastic ring 200 is assembled and push them into the sealing groove 400 of the cylinder flange 100; and a centering fine adjustment module integrated on the supporting circle fixing module for fine adjusting the radial position of the cylinder flange 100 during the pushing process to keep the gap between the elastic ring 200 and the inner wall of the sealing groove 400 of the cylinder flange 100 uniform.

[0069] As shown in Figure 2 , the supporting circle fixing module includes:

[0070] The ring-shaped support plate 4, and a plurality of support tubes 3 and a collection plate 2 integrally formed within the ring of the ring-shaped support plate 4; the plurality of support tubes 3 are arranged in a cross shape, and are connected to the inner ring surface of the ring-shaped support plate 4 at one end close to the ring-shaped support plate 4, and are connected to the collection plate 2 at the center of the ring-shaped support plate 4, so that the ring-shaped support plate 4, the support tubes 3, and the collection plate 2 jointly form a support frame; after the elastic ring 200 is installed, the first support surface (i.e., the back surface of the ring-shaped support plate 4 as shown in the figure) of the ring-shaped support plate 4 is attached to the surface of the elastic ring 200. In addition, the ring width of the ring-shaped support plate 4 is greater than the ring width of the elastic ring 200, that is, the inner diameter of the ring-shaped support plate 4 is smaller than the inner diameter of the elastic ring 200, and the outer diameter of the ring-shaped support plate 4 is greater than the outer diameter of the elastic ring 200. Figure 2

[0071] As shown in the figure, the first support surface of the ring-shaped support plate 4 is provided with a plurality of pressing plates 6, which are arranged at equal intervals along the ring-shaped first support surface, and the surface of each pressing plate 6 is arranged separately and parallel to the first support surface of the ring-shaped support plate 4. The elastic ring 200 is accommodated in the space between the ring-shaped support plate 4 and the pressing plate 6, and is pressed tightly by the pressing plate 6 in the direction perpendicular to the first support surface of the ring-shaped support plate 4. Further, a first fastener is arranged between the ring-shaped support plate 4 and the pressing plate 6, and the distance between the ring-shaped support plate 4 and the pressing plate 6 is reduced by tightening the first fastener, so that the elastic ring 200 is clamped and assembled between the ring-shaped support plate 4 and the pressing plate 6. At this time, one side surface of the elastic ring 200 is tightly attached to the first support surface of the ring-shaped support plate 4, and the other side surface of the elastic ring 200 is tightly attached to the surface of the pressing plate 6 close to the ring-shaped support plate 4. In the specific embodiment of the present application, the first fastener includes a first bolt 7 and a first nut 8; the first bolt 7 is arranged through the ring-shaped support plate 4 and the pressing plate 6; the first nut 8 is arranged on the first bolt 7, and the first nut 8 is located on the side of the ring-shaped support plate 4 away from the pressing plate 6; the distance between the ring-shaped support plate 4 and the pressing plate 6 is reduced by tightening the first nut 8 towards the pressing plate 6, so that the elastic ring 200 is clamped and assembled between the first support surface of the ring-shaped support plate 4 and the surface of the pressing plate 6 close to the ring-shaped support plate 4. Figure 3C The support circle fixing module further includes a ring-shaped support circle plate 13, as shown in the figure.

[0072] Figure 3B ​​As shown, the annular support plate 4 is concentrically arranged with the elastic ring 200, and is located on the first support surface of the annular support plate 4, and the outer diameter of the annular support plate 13 is smaller than the inner diameter of the elastic ring 200; the annular support plate 13 is concentrically arranged inside the elastic ring 200; a plurality of second fasteners are uniformly distributed along the inner circumferential surface of the annular support plate 13, and are vertically arranged on the inner and outer circumferential surfaces of the annular support plate 13, and one end of the second fastener passing through the outer circumferential surface of the annular support plate 13 is close to the inner contour surface 220 of the elastic ring 200; by screwing a plurality of second fasteners, the end of the second fastener passing through the outer circumferential surface of the annular support plate 13 gradually approaches the inner contour surface 220 of the elastic ring 200, thereby supporting the elastic ring 200 along each radial direction.

[0073] When the sealing groove 400 of the cylinder flange 100 is subsequently assembled, since the outer contour surface 210 of the elastic ring 200, i.e. the end of the elastic ring 200 away from the annular support plate 13, is tightly arranged in the sealing groove 400 of the cylinder flange 100, at this time, by screwing the second fastener, the assembly position of the supported elastic ring 200 can be adjusted, so that the gap between the elastic ring 200 and the inner wall of the sealing groove 400 is uniform.

[0074] In the specific embodiment of the present application, the second fastener is a second bolt 5, by screwing the screw cap of all second bolts 5, the end of the second bolt 5 away from the screw cap passes through the outer circumferential surface of the annular support plate 13, and gradually approaches the inner contour surface 220 of the elastic ring, so as to support the elastic ring 200 along each radial direction; when the elastic ring 200 is pushed into the sealing groove 400 of the cylinder flange 100, the screw cap of the second bolt 5 is continuously screwed in the same direction, the assembly position of the supported elastic ring is adjusted, so that the gap between the elastic ring and the inner wall of the sealing groove is uniform.

[0075] As shown in the accompanying drawings, Figure 3A and Figure 3D As shown, the attitude adjusting module comprises a plurality of lifting rings 1, a lifting rod 10, a counterweight 14 and a lifting lug 9; a plurality of lifting rings 1 are symmetrically arranged on the second support surface of the annular support plate 4 opposite to the first support surface (i.e. as shown in the accompanying drawings, Figure 2On the front of the annular support plate 4 shown, the elastic ring 200 and the supporting round fixing module are horizontally lifted and vertically flipped after lifting, so that they do not rotate around their center; the lifting rod 10 is concentric with the annular support plate 4 and vertically arranged on the collection plate 2, and the lifting rod 10 is arranged in a direction away from the elastic ring 200; the counterweight block 14 is sleeved on the lifting rod 10 for balancing; the lifting lug 9 is arranged at the end of the lifting rod 10 that is not connected to the collection plate 2, so as to connect the lifting rope and adjust the center of gravity of the supporting round fixing module by means of the self-weight of the counterweight block 14, so that the first support surface of the annular support plate 4 is parallel to the end face of the cylindrical flange 100 to be installed.

[0076] The lifting rings 1 are provided in multiple sets. In a specific embodiment of the present invention, the lifting rings 1 are provided in 2 sets, totaling 4 rings. The two lifting rings 1 in each set are distributed at both ends of the second support surface along the radial direction. During the horizontal lifting process using the first lifting equipment, all four lifting rings 1 are connected to the support surface via chains. Figure 4 At the upper space A shown, after hoisting to the appropriate position, slowly release the two nearest adjacent lifting rings 1 on the same side located on the second support surface (e.g., Figure 4 The two hanging rings 1 shown below, that is, the chains connected to the two closest hanging rings 1 in different groups, only allow the other side (such as Figure 4 The two nearest lifting rings 1 of the two upper lifting rings 1) shown are kept suspended to complete the vertical flipping of the elastic ring 200 and the supporting round fixing module, so that the side of the annular support plate 4 where the elastic ring 200 is installed faces the cylindrical flange 100; then, the second lifting device also hangs down another iron chain with a hook from the upper space B to hook the lifting lug 9 to lift the lifting rod 10, and maintain the vertical angle of the supporting round fixing module unchanged, so that the first support surface of the annular support plate 4 is parallel to the end face of the cylindrical flange 100 to be installed.

[0077] The second lifting device is a small lifting device; preferably, the present invention uses a hand chain hoist.

[0078] Furthermore, such as Figure 5 and Figure 6As shown, since the annular support plate 4 is vertically suspended at this time, the vertical axis of the annular support plate 4, which is perpendicular to the ground and passes through its center, is taken as the vertical reference line 54. The synchronous propulsion module includes multiple triangular propulsion frames located on one side of the second support surface of the annular support plate 4 and symmetrically distributed with respect to the vertical reference line 54. Each triangular propulsion frame includes a vertical support 51 and an inclined support 52 connected to the vertical support 51 at a certain angle. Two mechanical jacks 53 are symmetrically installed on each vertical support 51 with respect to the horizontal reference line, and the ends of the push rods of the two mechanical jacks 53 are respectively aligned with the leveled and aligned second support surface of the annular support plate 4. The horizontal reference line is the horizontal axis perpendicular to the vertical reference line 54 and passing through the center of the annular support plate 4. During operation, a unified command or a synchronous control system is used to make the two mechanical jacks 53 move synchronously to push the elastic ring 200 and the supporting and fixing module smoothly, synchronously, and without tilting into the sealing groove 400 of the cylinder flange 100.

[0079] In a specific embodiment of the present invention, two triangular propulsion frames are used, located on one side of the second support surface of the annular support plate 4 and symmetrically distributed with respect to the vertical reference line 54, and four mechanical jacks 53 are used to generate a propulsive force toward the cylinder flange 100 (i.e., two mechanical jacks 53 are used on each triangular propulsion frame); the four mechanical jacks 53, in such a way... Figure 6 Viewed from the direction perpendicular to the second support surface of the annular support plate 4, the rings are arranged at equal intervals along the circumference of the annular support plate 4 (i.e., each arrangement point forms a 45° angle with the center of the elastic ring 200 / annular support plate 4) to generate synchronous and equal propulsive forces on the elastic ring 200 and the second support surface of the circular fixing module.

[0080] In addition, the synchronous propulsion module also includes a support plate with wheels, which is set below the triangular propulsion frame to support the triangular propulsion frame, and the wheels and support plate move toward the end face of the cylindrical flange 100 as the propulsion force generated by the triangular propulsion frame is applied.

[0081] Furthermore, such as Figure 3B As shown, the centering fine-tuning module is a third fastener, which is vertically inserted through the inner and outer ring surfaces of the annular support plate 13, and one end of the third fastener passing through the outer ring surface of the annular support plate 13 is close to the inner wall 500 of the cylindrical flange. Since the sealing groove 400 of the cylindrical flange 100 is embedded in the inner wall 500 of the cylindrical flange, by tightening the third fastener, one end of the third fastener passing through the outer ring surface of the annular support plate 13 can contact and abut against the inner wall 500 of the cylindrical flange, thereby adjusting the radial gap between the sealing groove 400 and the outer contour surface 210 of the elastic ring 200, and keeping the gap uniform.

[0082] In the specific embodiment of the present application, the third fastener is a third bolt 12. By screwing the cap of the third bolt 12, the end of the third bolt 12 away from the cap penetrates the outer ring surface of the annular support plate 13 and gradually approaches the inner wall 500 of the flange of the cylinder body. By continuing to screw the cap in the same direction, the third bolt 12 contacts and abuts against the inner wall 500 of the flange of the cylinder body, thereby adjusting the gap between the sealing groove 400 and the outer profile surface 210 of the elastic ring 200 to adjust the centering state in real time and ensure that the circumferential gap between the sealing groove 400 and the elastic ring 200 is uniform.

[0083] The present application also provides a method for using the elastic ring horizontal installation tool to install the elastic ring 200 into the sealing groove 400 of the flange 100 of the cylinder body. The method comprises the following steps:

[0084] Step S1: clamp the elastic ring 200 in the support fixing module and support the elastic ring 200.

[0085] Specifically, the step S1 comprises:

[0086] S1.1, place the elastic ring 200 to be installed in a horizontal posture (i.e. horizontally) on the ground or workbench;

[0087] S1.2, hoist the support fixing module above the elastic ring 200, and make the first support surface of the annular support plate 4 fit the surface of the elastic ring 200, and make the inner ring surface of the elastic ring 200 close to the outer ring surface of the annular support plate 13;

[0088] S1.3, use the first fastener (i.e. the first bolt 7 and the first nut 8) to lock the pressing plate 6 and the annular support plate 4, so as to firmly clamp the elastic ring 200 between the two.

[0089] S1.4, screw the second fastener (i.e. the second bolt 5), so that the end of the second fastener protrudes from the outer ring surface of the annular support plate 13 and abuts against the inner profile surface 220 of the elastic ring 200. By adjusting the second fastener uniformly distributed at multiple points, the roundness of the elastic ring 200 is corrected and maintained from all directions to prevent deformation.

[0090] Step S2: overall hoist and vertically flip the support fixing module with the clamped elastic ring 200, and adjust the center of gravity through the posture adjusting module, so that the support surface of the annular support plate 4 is parallel to the end surface of the flange 100 of the cylinder body to be installed.

[0091] Specifically, the step S2 comprises:

[0092] S2.1, connect the hook of the first lifting equipment at the upper A to the four lifting rings 1 symmetrically arranged on the second support surface of the annular support plate 4 through iron chains;

[0093] S2.2, horizontally hoist the fixed elastic ring 200 and the whole support circle fixing module to be lifted off the ground or the workbench;

[0094] S2.3, slowly release the iron chains of the two nearest lifting rings 1 on one side (for example, the lower side as shown) of the annular support plate 4, and only keep the two nearest lifting rings 1 on the other side (for example, the upper side as shown) under stress, so that the support circle fixing module and the attitude adjusting module after assembling the elastic ring 200 complete a 90° vertical flip in the air; at this time, the side of the annular support plate 4 where the elastic ring 200 is installed faces the end surface of the cylinder flange 100; Figure 4 Figure 4 S2.3, slowly release the iron chains of the two nearest lifting rings 1 on one side (for example, the lower side as shown) of the annular support plate 4, and only keep the two nearest lifting rings 1 on the other side (for example, the upper side as shown) under stress, so that the support circle fixing module and the attitude adjusting module after assembling the elastic ring 200 complete a 90° vertical flip in the air; at this time, the side of the annular support plate 4 where the elastic ring 200 is installed faces the end surface of the cylinder flange 100;

[0095] S2.4, after the flip is completed, the second lifting equipment hooks the lifting lug 9 with another hook iron chain from the upper B and hoists the lifting rod 10; by adjusting the weight of the counterweight 14, the center of gravity and attitude of the whole assembly including the support circle fixing module and the attitude adjusting module after assembling the elastic ring are finely adjusted until the support surface of the annular support plate 4 is strictly parallel to the end surface of the cylinder flange 100 to be installed (i.e. the elastic ring axis is horizontal).

[0096] Step S3: uniformly distribute the synchronous pushing modules around the elastic ring 200.

[0097] Specifically, the step S3 comprises:

[0098] S3.1, on one side of the second support surface of the annular support plate 4, two triangular pushing frames are arranged symmetrically to the vertical reference line of the annular support plate 4, and the two triangular pushing frames are erected on the support plate with wheels;

[0099] S3.2, two mechanical jacks 53 are arranged symmetrically to the horizontal reference line of the annular support plate 4 on the vertical support 51 of each triangular pushing frame, so that the top rod ends of the four mechanical jacks 53 on the two triangular frames are aligned with the second support surface of the support circle fixing module which has been leveled and aligned; that is, the four mechanical jacks 53 are equidistantly spaced (for example, spaced by 45°) along the circumference of the annular support plate 4.

[0100] Step S4: through the synchronous pushing module and the centering fine adjustment module, the multi-point synchronous pushing tool pushes until the elastic ring 200 enters the sealing groove 400 of the cylinder flange 100, and the centering fine adjustment of the elastic ring 200 is carried out during the pushing process.

[0101] Specifically, the step S4 comprises:

[0102] ​S4.1, adopt a synchronous control system, simultaneously and synchronously start all mechanical jacks 53, so that they drive the triangular propulsion frame and the support plate to move towards the direction close to the flange 100 of the cylinder body at the same speed and thrust, and further push the elastic ring 200 and the whole assembly containing the supporting circle fixing module and the attitude adjustment module to slowly move towards the sealing groove 400 of the flange 100 of the cylinder body;

[0103] S4.2, in the process of pushing to assemble, the operator needs to observe the radial gap between the outer contour surface 210 of the elastic ring 200 and the inner wall of the sealing groove 400;

[0104] If it is found that the gap is uneven at some place, the end of the corresponding third fastener (i.e. the third bolt 12) is made to abut against the inner wall 500 of the flange of the cylinder body by screwing, and the second fastener (i.e. the second bolt 5) is screwed to further adjust the gap between the elastic ring 200 and the inner wall of the sealing groove 400, so as to dynamically fine-tune the radial position of the elastic ring 200 and correct the eccentricity in real time, so as to ensure that the circumferential gap between the elastic ring 200 and the inner wall of the sealing groove 400 is always uniform, until the elastic ring 200 is completely and orthodically assembled into the sealing groove of the flange 100 of the cylinder body.

[0105] Step S5: disassemble the modules of the horizontal installation tooling from the elastic ring 200.

[0106] Specifically, the step S5 comprises:

[0107] S5.1, after confirming that the elastic ring 200 is installed in place, reverse operation of all mechanical jacks 53 so that the jack rods retract;

[0108] S5.2, disassemble all the triangular propulsion frames;

[0109] S5.3, loosen and disassemble all the first fasteners (i.e. the first bolt 7 and the first nut 8), the second fasteners (i.e. the second bolt 5) and the third fasteners (i.e. the third bolt 12);

[0110] S5.4, move the supporting circle fixing module (including the annular support plate 4, the support pipe 3, the collection plate 2, the annular supporting circle plate 13, etc.) away from the installed elastic ring 200;

[0111] S5.5, disassemble the connection of the attitude adjustment module (such as taking off the iron chain from the lifting lug 9), and complete the whole installation process.

[0112] In summary, the horizontal installation tooling and method for the elastic ring of a large pressure vessel provided by the application can realize mechanization and controllability of the installation process, ensure that the elastic ring maintains roundness, levelness and centration during the whole installation process, and can be uniformly and synchronously pushed into the sealing groove, so as to eliminate the risk of being stuck, improve the installation success rate, quality and efficiency.

[0113] It should be noted that, in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not required to only those elements, but can also include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0114] In the description of the application, it should be understood that the terms "center", "height", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like 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 application and simplifying the description, and do not indicate or imply 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 a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0115] In the description of the application, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0116] In the present application, unless otherwise specified and limited, "on" or "under" the first feature of the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, "on", "above" and "above" of the first feature of the second feature includes that the first feature is directly above and 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 includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0117] While the application has been described in detail by reference to preferred embodiments thereof, it should be recognized that the description set forth herein is by way of example and that modifications of the procedures described can be employed without departing from the scope of the application. Accordingly, the scope of the application should be determined by the appended claims and equivalents thereof.

Claims

1. A horizontal mounting fixture for elastic rings in large pressure vessels, used to install the elastic ring into the sealing groove of the cylindrical flange of the large pressure vessel, characterized in that, include: A rounding fixing module is used to fix and maintain the roundness of a horizontally placed elastic ring; An attitude adjustment module, which is connected to the center of the circular support fixing module, is used to realize the overall vertical flipping and center of gravity leveling of the elastic ring and the circular support fixing module that are fixedly connected to each other. The synchronous propulsion module is evenly arranged near the end face of the cylindrical flange to provide multiple evenly distributed propulsion forces so that the rounding fixing module and the attitude adjustment module after the elastic ring is assembled are evenly stressed and pushed into the sealing groove of the cylindrical flange. The centering fine-tuning module, which is integrated on the supporting round fixing module, is used to fine-tune the radial position of the cylindrical flange during the advancement process to maintain a uniform gap between the elastic ring and the inner wall of the sealing groove of the cylindrical flange. The circular support fixing module includes: An annular support plate, and a plurality of support tubes and a collection plate integrally formed within the annulus of the annular support plate; the annular support plate has a first support surface for supporting and fitting the elastic ring after the elastic ring is installed; An annular support plate is concentrically arranged with the annular support plate and located on the first support surface of the annular support plate, and the outer diameter of the annular support plate is smaller than the inner diameter of the elastic ring. The annular support plate has multiple pressure plates on one side of its first support surface. The pressure plates are evenly spaced along the annular first support surface, and the surface of each pressure plate is spaced apart from and parallel to the first support surface of the annular support plate. The elastic ring is housed in the space between the annular support plate and the pressure plates. The attitude adjustment module includes: multiple lifting rings, lifting rods, and lifting lugs. Multiple lifting rings are symmetrically arranged on the second support surface of the annular support plate. The second support surface is opposite to the first support surface and is used to horizontally lift the round fixing module after the elastic ring is assembled and to vertically flip it after lifting. The suspension rod is concentric with and perpendicular to the annular support plate on the assembly plate, and the suspension rod is oriented away from the elastic ring. The lifting lug is located at the end of the lifting rod that is not connected to the assembly plate, so as to adjust the center of gravity of the supporting ring fixing module after the lifting rope is connected, so that the first support surface of the annular support plate is parallel to the end face of the cylinder flange to be installed.

2. The installation fixture as described in claim 1, characterized in that, The plurality of support tubes are arranged in a star shape, with one end of the tubes near the annular support plate connected to the inner ring surface of the annular support plate, and the other end connected to the collection plate located at the center of the annular support plate.

3. The installation fixture as described in claim 2, characterized in that, A first fastener is provided between the annular support plate and the pressure plate. By tightening the first fastener, the distance between the annular support plate and the pressure plate is reduced, so as to press the elastic ring in a direction perpendicular to the annular support plate and the pressure plate.

4. The installation fixture as described in claim 3, characterized in that, The circular support fixing module further includes: Multiple second fasteners are evenly distributed circumferentially along the inner ring surface of the annular support plate, and are perpendicularly inserted through the inner and outer ring surfaces of the annular support plate. One end of the second fastener passing through the outer ring surface of the annular support plate is close to the inner contour surface of the elastic ring. By screwing the multiple second fasteners, the elastic ring is expanded into a circle along each radial direction. The outer contour surface of the elastic ring is close to the sealing groove of the cylindrical flange. After the elastic ring is assembled into the sealing groove of the cylindrical flange, the assembly position of the rounded elastic ring is adjusted by tightening the second fastener so that the gap between the elastic ring and the inner wall of the sealing groove is uniform.

5. The installation fixture as described in claim 4, characterized in that, The attitude adjustment module further includes: a counterweight; the counterweight is sleeved on the boom for balancing; The lifting rings are provided in multiple sets, and the two lifting rings in each set are distributed on both ends of the second support surface along the radial direction.

6. The installation fixture as described in claim 5, characterized in that, The synchronous propulsion module includes multiple triangular propulsion frames located on one side of the second support surface of the annular support plate and symmetrically distributed with respect to the vertical reference line of the annular support plate. Each triangular propulsion frame includes a vertical support and an oblique support set at a certain angle to the vertical support. The vertical reference line is the vertical axis of the annular support plate that is perpendicular to the ground and passes through its center. Two mechanical jacks are installed symmetrically to the horizontal reference line on each vertical support, and the ends of the jack rods of the two mechanical jacks are respectively aligned with the second support surface of the leveled and aligned annular support plate; the horizontal reference line is a horizontal axis that is perpendicular to the vertical reference line and passes through the center of the annular support plate. Each mechanical jack connected to a vertical support is connected to a synchronous control system to synchronously control the operation of the mechanical jacks, thereby generating synchronous and equal propulsive forces on the second support surface of the elastic ring and the support ring fixing module.

7. The installation fixture as described in claim 6, characterized in that, The centering fine-tuning module is a third fastener, which is vertically inserted through the inner and outer ring surfaces of the annular support plate, and one end of the third fastener passing through the outer ring surface of the annular support plate is close to the inner wall of the cylinder flange. By tightening the third fastener, one end of the third fastener passes through the outer ring surface of the annular support plate and contacts and abuts against the inner wall of the cylindrical flange, thereby adjusting the radial gap between the sealing groove and the outer contour surface of the elastic ring.

8. A method of using a flexible ring-shaped installation fixture, implemented based on the installation fixture as described in any one of claims 1-7, characterized in that, The method of using the installation fixture includes the following steps: Step S1: The elastic ring is clamped in the rounding fixing module and the elastic ring is rounded. Step S2: The circular support module with the elastic ring clamped is lifted and vertically rotated as a whole, and the center of gravity is adjusted by the attitude adjustment module so that the annular support plate is parallel to the end face of the cylindrical flange to be installed. Step S3: Distribute the synchronous propulsion modules evenly along the circumference of the elastic ring; Step S4: Through the synchronous propulsion module and the centering fine-tuning module, the elastic ring and the overall assembly including the rounding fixing module and the attitude adjustment module are synchronously propulsed into the sealing groove of the cylinder flange at multiple points, and the centering fine-tuning of the elastic ring is performed in real time. Step S5: Remove each module from the elastic ring in the installation fixture.

9. The method of use as described in claim 8, characterized in that, Step S1 includes: The circular support fixing module is hoisted above the elastic ring, and the first support surface of the annular support plate is made to fit against the surface of the elastic ring, and the inner ring surface of the elastic ring is made close to the outer ring surface of the annular support plate. The pressure plate is locked to the annular support plate using the first fastener, thereby clamping the elastic ring between the two. Tighten the second fastener so that its end extends from the outer ring surface of the annular support plate and abuts against the inner contour surface of the elastic ring. By adjusting the second fasteners that are evenly distributed at multiple points, the roundness of the elastic ring can be corrected and maintained from all directions. Step S2 includes: At least two sets of lifting rings are connected by the first lifting equipment to horizontally lift the support ring fixing module after the elastic ring is assembled; each set is equipped with two lifting rings; Slowly disconnect the connection between the lifting equipment and the two adjacent lifting rings on one side of the ring support plate, while keeping the connection with the two lifting rings on the other side, so that the support ring fixing module and attitude adjustment module after the elastic ring is assembled can complete a 90° vertical flip in the air. After flipping, the side of the ring support plate with the elastic ring installed faces the end face of the cylinder flange. After the flipping is completed, the lifting rod is lifted by the second lifting equipment; by adjusting the weight of the counterweight, the center of gravity and attitude of the supporting ring fixing module and attitude adjustment module after the elastic ring is assembled are adjusted until the first support surface of the ring support plate is parallel to the end face of the cylinder flange to be installed. The real-time centering fine-tuning of the elastic ring in step S4 includes: When the elastic ring is pushed into the sealing groove of the cylindrical flange, if there is an uneven radial gap between the outer contour surface of the elastic ring and the inner wall of the sealing groove, the third fastener set at the uneven gap is tightened so that its end abuts against the inner wall of the cylindrical flange. Furthermore, by tightening the second fastener located at the uneven gap, the gap between the elastic ring and the inner wall of the sealing groove is further adjusted to ensure the centered assembly of the elastic ring.

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