Temporary plugging device for steam pipeline construction

Abstract

The utility model discloses a temporary plugging device for steam pipeline construction, and relates to the technical field of pipeline construction, the temporary plugging device comprises a connecting cylinder and a diaphragm, the connecting cylinder is in butt joint with a pipe orifice of a steam pipeline, one end of the connecting cylinder is fixedly connected with a balance cylinder, the inner side wall of the connecting cylinder is provided with a rubber ring, and the diaphragm is arranged on the rubber ring. One end of the connecting cylinder is provided with a balancing cylinder, the other end of the connecting cylinder is provided with a diaphragm, the diaphragm is fixed at an opening in one side of the connecting cylinder, the side wall of the balancing cylinder is provided with a conical through opening, a conical plug is arranged at the conical through opening, and the outer side wall of the balancing cylinder is communicated with an air guide pipe. The balancing cylinder is filled with high-pressure gas through the conical plug, so that the pressure at the two ends of the diaphragm is in a balanced state, the heating wire is used for increasing the temperature in the balancing cylinder, the two faces of the diaphragm are evenly heated, and the problem that the service life of the diaphragm is affected due to fission caused by too large temperature difference is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction, in particular to a temporary plugging device for steam pipeline construction. Background Art

[0002] The steam pipe is a pipeline system used to transport steam. It is widely used in industries such as industry, power generation, and heating. In the steam pipe transportation system, steam system failures may occur, so it is necessary to handle the failures in a timely manner. In order to avoid leakage of steam energy in the pipeline, the steam pipe needs to be temporarily blocked.

[0003] For example, the patent publication number CN214248717U for "a temporary plugging device for steam pipeline construction" includes a nylon belt, which includes a blocking segment and an adhesive segment, and the blocking segment and the adhesive segment are arranged side by side along the width direction; one side end of the blocking segment is connected to one side end of the adhesive segment, and the other side end is in contact with the steam medium, and a nylon rope is connected to one end of the adhesive segment along the length direction and away from the edge of the blocking segment, and adhesive sheets are arranged on both sides of the adhesive segment along the thickness direction, and the adhesive segment and the blocking segment are both rolled into a disc shape along the length direction and from one end connected to the nylon rope and are inserted into the pipeline to be constructed to block the steam medium.

[0004] However, in the prior art, rubber or plastic materials are generally used as seals to seal the pipe openings of steam pipes. However, when the sealing materials are exposed to high pressure and high temperature gases inside the pipe for a long time, the seals are easily deformed, and the temperature difference on both sides of the seals is likely to cause cracks on the surface of the workpiece, thereby affecting the sealing effect of the seals and the service life of the sealing device. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that in the prior art, rubber or plastic materials are generally used as seals to seal the pipe openings of steam pipes, but when the sealing materials are exposed to high pressure and high temperature gas inside the pipe for a long time, the seals are easily deformed, and the temperature difference on both sides of the seals is easy to cause cracks on the surface of the workpiece, thereby affecting the sealing effect of the seals and the service life of the sealing device. A temporary sealing device for steam pipe construction is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a temporary plugging device for steam pipeline construction, comprising a connecting tube and a diaphragm, the connecting tube is connected to the pipe mouth of the steam pipeline, one end of the connecting tube is fixedly connected to a balancing tube, the inner side wall of the connecting tube is provided with a rubber ring, the diaphragm is fixed to an opening on one side of the connecting tube, the side wall of the balancing tube is provided with a conical opening, and a conical plug is provided at the conical opening, the outer side wall of the balancing tube is connected to an air guide pipe, the inner side wall of the balancing tube is fixedly connected to a suspension frame, a spring is fixedly connected between the suspension frame and the conical plug, and a heating wire is provided inside the suspension frame.

[0007] Preferably, the outer side wall of the connecting tube is provided with ball grooves at equal intervals along the periphery, and locking balls are arranged inside the ball grooves.

[0008] Preferably, one end of the connecting tube is fixedly connected with a step, and the other end of the connecting tube is provided with a retaining ring.

[0009] Preferably, the outer side wall of the connecting tube is slidably connected with a toggle sleeve, and the inner side wall of the toggle sleeve is fixedly connected with the inner limit platform.

[0010] Preferably, the inner side wall of the suspension frame is fixedly connected with a bending seat, and the heating wire is installed on the surface of the bending seat.

[0011] Preferably, a damper is provided on the inner side wall of the spring.

[0012] Preferably, the outer side wall of the toggle sleeve is provided with anti-slip stripes, and the outer side wall of the locking ball is coated with a rust inhibitor.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the connection with the steam pipeline is realized by a connecting cylinder, a balancing cylinder is arranged at the other end of the connecting cylinder, and a conical plug is used to fill the balancing cylinder with high-pressure gas, so that the pressure at both ends of the diaphragm is in a balanced state, and a heating wire is used inside the balancing cylinder to increase the temperature so that both sides of the diaphragm are heated evenly, thereby solving the problem that the diaphragm fissions due to excessive temperature difference affect its service life.

[0015] 2. In the utility model, a plurality of circumferentially arranged ball grooves are provided on the outer wall of the connecting tube, and locking balls are provided inside the ball grooves. When connecting the pipes, the toggle sleeve is toggled toward the step side so that the locking ball is not in a locked state, so that the pipe sleeve can be connected to the inner wall of the connecting tube. When fixing, the toggle sleeve is toggled forward so that the inner limit table squeezes the locking ball exposed on the ball groove, and the compressed locking ball is used to fix the pipe. The tightness of the locking ball inside the ball groove is controlled by adjusting the position of the toggle sleeve, thereby achieving the effect of controlling the locking ball to fix the steam pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a temporary plugging device for steam pipeline construction is proposed for the utility model;

[0017] Figure 2 The utility model provides a schematic diagram of the internal structure of a temporary plugging device for steam pipeline construction;

[0018] Figure 3 The utility model provides a structural schematic diagram of a toggle sleeve in a temporary plugging device for steam pipeline construction;

[0019] Figure 4 The utility model provides a structural schematic diagram of a connecting tube in a temporary plugging device for steam pipeline construction;

[0020] Figure 5 The utility model provides a structural schematic diagram of a balance cylinder in a temporary plugging device for steam pipeline construction.

[0021] Legend: 1. Air guide tube; 2. Balance cylinder; 3. Toggle sleeve; 4. Connecting cylinder; 5. Locking ball; 6. Inner limit table; 7. Ball groove; 8. Retaining ring; 9. Step; 10. Rubber ring; 11. Diaphragm; 12. Heating wire; 13. Suspension frame; 14. Conical plug; 15. Spring; 16. Bending seat. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1: Figure 1 - Figure 5 As shown, the utility model provides a temporary plugging device for steam pipeline construction, including a connecting tube 4 and a diaphragm 11. The connecting tube 4 is connected to the pipe mouth of the steam pipeline, one end of the connecting tube 4 is fixedly connected to the balancing tube 2, the inner wall of the connecting tube 4 is provided with a rubber ring 10, the diaphragm 11 is fixed to one side opening of the connecting tube 4, the side wall of the balancing tube 2 is provided with a tapered opening, and a tapered plug 14 is provided at the tapered opening, the outer side wall of the balancing tube 2 is connected to the air guide pipe 1, the inner side wall of the balancing tube 2 is fixedly connected to a suspension frame 13, a spring 15 is fixedly connected between the suspension frame 13 and the tapered plug 14, and a heating wire 12 is provided inside the suspension frame 13.

[0025] The specific settings and functions of this embodiment are described in detail below. During use, the connecting tube 4 is sleeved on the pipe mouth of the steam pipe by external embedding, and the steam pipe is temporarily sealed to facilitate subsequent construction work on the steam pipe. When the pipe mouth is blocked, the high pressure inside the steam pipe will cause the diaphragm 11 on the outside of the connecting tube 4 to bulge and deform, and due to the high temperature of the steam, the two sides of the diaphragm 11 are heated unevenly, resulting in thermal fission damage to the diaphragm 11, affecting the service life of the diaphragm 11. The outer wall of the connecting tube 4 is sealed and connected to the balancing tube 2. One end of the balancing tube 2 is connected to the air pump through the air guide tube 1, and the outer end of the balancing tube 2 is provided with a tapered opening. The tapered plug 14 is used in conjunction with the spring 15 to allow the tapered plug 14 to close the tapered opening. To complete the one-way seal, when the air pump is working and the outside air is filled into the balance cylinder 2, the air pushes the tapered plug 14 inward through the air guide tube 1, thereby connecting the tapered port. When the air pump is not working, the high air pressure inside the balance cylinder 2 pushes the tapered plug 14 outward, and at the same time, the spring 15 also generates an outward elastic force on the tapered plug 14, so that the tapered plug 14 fits tightly on the tapered port, so that the tapered port is sealed, thereby maintaining the high-pressure environment inside the balance cylinder 2 and reaching a balanced state with the high-pressure steam on the other side of the diaphragm 11, so that the force on both sides of the diaphragm 11 is more evenly applied. A heating wire 12 is arranged in the suspension frame 13, and the heating wire 12 is used to heat the gas in the balance cylinder 2, so that the heat on both sides of the diaphragm 11 is more evenly applied, reducing the thermal damage to the diaphragm 11, thereby increasing the service life of the diaphragm 11.

[0026] Embodiment 2: Figure 2 , Figure 3 and Figure 4 As shown, the outer wall of the connecting tube 4 is provided with ball grooves 7 at equal intervals along the periphery, and a locking ball 5 is arranged inside the ball groove 7. A step 9 is fixedly connected to one end of the connecting tube 4, and a retaining ring 8 is arranged at the other end of the connecting tube 4. The outer wall of the connecting tube 4 is slidably connected to the toggle sleeve 3, and the inner wall of the toggle sleeve 3 is fixedly connected to the inner limit platform 6. The inner wall of the suspension frame 13 is fixedly connected to the bending seat 16, and the heating wire 12 is installed on the surface of the bending seat 16. A damper is arranged on the inner wall of the spring 15. The outer wall of the toggle sleeve 3 is provided with anti-slip stripes, and the outer wall of the locking ball 5 is coated with a rust inhibitor.

[0027] The effect achieved by the entire embodiment is that, in order to make the steam pipe more firmly embedded in the connecting tube 4 and avoid the problem of the steam pipe and the connecting tube 4 falling off, a ball groove 7 is provided on the outer wall of the connecting tube 4, a locking ball 5 is provided in the ball groove 7, and a movable toggle sleeve 3 is provided on the outer wall of the connecting tube 4, and an inner limit platform 6 is provided on the inner wall of the toggle sleeve 3. When the inner limit platform 6 is aligned with the locking ball 5, the inner limit platform 6 squeezes the locking ball 5 inward, thereby locking the embedded steam pipe. When the steam pipe is sleeved on the connecting tube, the locking ball 5 is locked. When the steam pipe is inside the connecting tube 4, the toggle sleeve 3 is toggled toward the step 9 to move the inner limit platform 6 away from the ball groove 7 so that the locking ball 5 is not in a locked state, so that the pipeline can be sleeved on the inner wall of the connecting tube 4. After the steam pipe is completely sleeved on the steam inner wall, the toggle sleeve 3 is toggled forward to make the inner limit platform 6 squeeze the locking ball 5 exposed on the ball groove 7, and the compressed locking ball 5 is used to fix the pipeline. A retaining ring 8 and a step 9 are respectively provided at both ends of the connecting tube 4 to limit the toggle sleeve 3 at both ends.

[0028] The use method and working principle of the device: When blocking the steam pipe, the toggle sleeve 3 is toggled toward the step 9, so that the inner limit platform 6 is moved away from the ball groove 7, so that the locking ball 5 is not in a locked state, so that the pipe can be sleeved on the inner wall of the connecting tube 4. After the steam pipe is completely sleeved on the steam inner wall, the toggle sleeve 3 is toggled forward, so that the inner limit platform 6 squeezes the locking ball 5 exposed on the ball groove 7, and the compressed locking ball 5 is used to fix the pipe;

[0029] Then, when the air pump works and external air is filled into the balancing cylinder 2, the air pushes the conical plug 14 inward through the air guide tube 1, thereby connecting the conical port. Then the air pump stops working, and the spring 15 also generates an outward elastic force on the conical plug 14, so that the conical plug 14 fits tightly on the conical port. The heating wire 12 is used to heat the gas in the balancing cylinder 2, so that the two sides of the diaphragm 11 are heated more evenly.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A temporary plugging device for steam pipeline construction, comprising a connecting tube (4) and a diaphragm (11), wherein the connecting tube (4) is butt-jointed with a pipe opening of the steam pipeline, and characterized in that: One end of the connecting cylinder (4) is fixedly connected to a balancing cylinder (2), an inner side wall of the connecting cylinder (4) is provided with a rubber ring (10), the diaphragm (11) is fixed to an opening on one side of the connecting cylinder (4), a conical opening is opened on the side wall of the balancing cylinder (2), and a conical plug (14) is provided at the conical opening, an outer side wall of the balancing cylinder (2) is connected to an air guide pipe (1), an inner side wall of the balancing cylinder (2) is fixedly connected to a suspension frame (13), a spring (15) is fixedly connected between the suspension frame (13) and the conical plug (14), and a heating wire (12) is provided inside the suspension frame (13).

2. A temporary plugging device for steam pipeline construction according to claim 1, characterized in that: The outer wall of the connecting tube (4) is provided with ball grooves (7) at equal intervals along the periphery, and locking balls (5) are arranged inside the ball grooves (7).

3. A temporary plugging device for steam pipeline construction according to claim 1, characterized in that: One end of the connecting tube (4) is fixedly connected to a step (9), and the other end of the connecting tube (4) is provided with a retaining ring (8).

4. A temporary plugging device for steam pipeline construction according to claim 2, characterized in that: The outer side wall of the connecting tube (4) is slidably connected to a toggle sleeve (3), and the inner side wall of the toggle sleeve (3) is fixedly connected to an inner limit platform (6).

5. A temporary plugging device for steam pipeline construction according to claim 1, characterized in that: The inner side wall of the suspended frame (13) is fixedly connected to a bending seat (16), and the heating wire (12) is mounted on the surface of the bending seat (16).

6. A temporary plugging device for steam pipeline construction according to claim 1, characterized in that: The inner side wall of the spring (15) is provided with a damper.

7. A temporary plugging device for steam pipeline construction according to claim 4, characterized in that: The outer wall of the toggle sleeve (3) is provided with anti-slip stripes, and the outer wall of the locking ball (5) is coated with a rust-proof agent.

Images