RTP pipe sealing connection structure

Abstract

The utility model relates to an RTP pipe sealing connection structure which is used for connecting two RTP pipes and comprises two annular protrusion sets and a hoop, the two annular protrusion sets are formed on the butt joint faces of the two RTP pipes respectively, and the two annular protrusions abut against each other; the hoop is arranged at the joint of the two RTP pipes in a sleeving mode and detachably connected with the two RTP pipes. Annular protrusion sets are arranged on the butt joint faces of the two RTP pipes, in the butt joint process of the two RTP pipes, the two annular protrusion sets abut against each other, so that in the RTP pipe sealing process, the hoop is used for fixing the two RTP pipes, the two annular protrusion sets are tightly attached together, and therefore sealing connection of the two RTP pipes is achieved. Due to the fact that the hoop only plays a role in fixing the position between the two RTP pipes, the requirement for the size precision of the connecting structure is not high, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipe technology, and in particular to a sealing connection structure for RTP pipes. Background Technology

[0002] Currently, most RTP pipes are connected using flanges, with sealing achieved through sealing rings placed at the joint ends of the two RTP pipes. These sealing rings are prone to aging over time, leading to leaks at the RTP pipe joints.

[0003] Therefore, a high-pressure sealing connection structure for RTP pipes, as proposed in utility model patent application number CN201920296294.5, can be adopted. This structure includes a connecting joint, with RTP pipes inserted into both ends of the connecting joint. An annular partition is provided in the middle of the connecting joint. Several first annular protrusions and first annular grooves are provided at intervals on both sides of the annular partition. Several second annular protrusions and second annular grooves are provided at intervals on the end face of the RTP pipe wall.

[0004] However, the dimensional accuracy requirements for the multiple first and second annular grooves opened on the connector are high. Utility Model Content

[0005] In view of this, it is necessary to provide a sealing connection structure for RTP pipes to solve the problem of high dimensional accuracy requirements for the connection joints used to connect two RTP pipes.

[0006] This utility model provides a sealing connection structure for RTP pipes, used to connect two RTP pipes, including two annular protrusion groups and a clamp: the two annular protrusion groups are respectively formed on the mating surfaces of the two RTP pipes, and the two annular protrusions are abutted against each other; the clamp is sleeved at the connection of the two RTP pipes and is detachably connected to the two RTP pipes.

[0007] Furthermore, the RTP pipe includes a straight pipe and a tapered sleeve. The tapered sleeve is fixedly fitted onto the straight pipe. The outer diameter of the tapered sleeve increases along the direction close to the adjacent RTP pipe. Tapered surfaces are formed on the inner walls of both sides of the clamp. The tapered surfaces of the clamp abut against the outer wall of the tapered sleeve.

[0008] Furthermore, the annular protrusion includes a plurality of annular protrusions concentrically arranged with the RTP tube, and the diameter of the plurality of annular protrusions increases sequentially along the radial direction of the RTP tube.

[0009] Furthermore, the clamp includes two connecting half-rings, multiple connecting screws, and multiple connecting nuts. The two connecting half-rings are arranged opposite each other and form a cavity between them to hold the connection of the two RTP tubes. The multiple connecting screws are respectively located on both sides of one of the connecting half-rings and pass through the two connecting half-rings to connect with the multiple connecting nuts.

[0010] Furthermore, it also includes two adjustment components, both of which are mounted on the clamp and each has an adjustment end extending into the clamp. The two adjustment ends respectively abut against the outer walls of the two RTP tubes for adjusting the radial position of the two RTP tubes.

[0011] Furthermore, the adjustment assembly includes multiple adjusting screws and multiple top blocks. The multiple adjusting screws are evenly arranged circumferentially along the clamp, and the free ends of the multiple adjusting screws extend through the threaded holes opened on the clamp to the gap between the clamp and the RTP tube. The free ends of the multiple adjusting screws are respectively fixedly connected to the multiple top blocks, and the multiple top blocks abut against the outer wall of the RTP tube.

[0012] Furthermore, it also includes a hexagonal prism fixedly connected to one end of the adjusting screw located outside the clamp.

[0013] Furthermore, it also includes forming a weld point between the adjusting screw and the outer wall of the clamp.

[0014] Furthermore, it also includes a detection component and two sealing rings. The two sealing rings are respectively fitted onto the outer walls of the two RTP tubes, and a detection cavity is formed between the two sealing rings. The detection end of the detection component extends into the detection cavity for detecting the airtightness of the detection cavity.

[0015] Furthermore, the detection assembly includes a detection tube, a plug, and an airtightness tester. The clamp has a detection hole that communicates with the detection chamber. The detection tube is located outside the clamp. One end of the detection tube is fixedly connected to the detection hole, and the other end of the detection tube is detachably connected to the plug or the airtightness tester.

[0016] Compared with existing technologies, both RTP pipes have annular protrusions on their mating surfaces. During the mating process, the two annular protrusions abut against each other, thus sealing the RTP pipes. The clamp is used to fix the two RTP pipes, making the two annular protrusions fit tightly together, thereby achieving a sealed connection between the two RTP pipes. Since the clamp only serves to fix the position between the two RTP pipes, the dimensional accuracy requirements of the connection structure are not high, reducing production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall internal structure of the RTP pipe sealing connection structure provided in this embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the clamp structure in the RTP pipe sealing connection structure provided in this embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the adjusting component in the RTP pipe sealing connection structure provided in this embodiment of the utility model;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 As shown, the present invention provides a sealing connection structure for RTP pipes, used to connect two RTP pipes 100, including two sets of annular protrusions 111 and a clamp 200: the two sets of annular protrusions 111 are respectively formed on the mating surfaces of the two RTP pipes 100, and the two annular protrusions 111 are abutted against each other; the clamp 200 is sleeved on the connection of the two RTP pipes 100 and is detachably connected to the two RTP pipes 100.

[0023] The mating surfaces of the two RTP pipes 100 are each provided with annular protrusions 111. During the mating process, the two annular protrusions 111 abut against each other to seal the RTP pipes 100. The clamp 200 is used to fix the two RTP pipes 100, so that the two annular protrusions 111 are tightly attached together, thereby achieving a sealed connection between the two RTP pipes 100. Since the clamp 200 only serves to fix the position between the two RTP pipes 100, the dimensional accuracy requirements of the connection structure are not high, thus reducing production costs.

[0024] To facilitate the clamp 200 in fixing the relative position between the two RTP pipes 100, the RTP pipe 100 in this embodiment includes a straight pipe 110 and a tapered sleeve 120. The tapered sleeve 120 is fixedly sleeved on the straight pipe 110. The outer diameter of the tapered sleeve 120 increases along the direction close to the adjacent RTP pipe 100. Tapered surfaces are formed on the inner walls of both sides of the clamp 200, and the tapered surfaces of the clamp 200 abut against the outer wall of the tapered sleeve 120.

[0025] In this embodiment, the annular protrusion 111 includes multiple annular protrusions 111 concentrically arranged with the RTP pipe 100, and the diameter of the multiple annular protrusions 111 increases sequentially along the radial direction of the RTP pipe 100. A tight abutment between any two opposing annular protrusions 111 is sufficient to achieve a sealing function between the two RTP pipes 100. By setting multiple annular protrusions 111, the machining precision of the annular protrusions 111 can be reduced, facilitating production. Furthermore, it should be noted that the annular protrusions 111 and the conical sleeve 120 can be demolded onto the straight pipe 110, facilitating mass production with high precision.

[0026] like Figure 2 As shown, the clamp 200 in this embodiment includes two connecting half-rings 210, multiple connecting screws 220, and multiple connecting nuts 230. The two connecting half-rings 210 are arranged opposite each other, forming a cavity between them to hold the connection point of the two RTP pipes 100. The multiple connecting screws 220 are respectively located on both sides of one of the connecting half-rings 210, and pass through the two connecting half-rings 210 before connecting with the multiple connecting nuts 230. This facilitates the installation of the clamp 200 onto the two RTP pipes 100.

[0027] After the clamp 200 is installed, it is difficult to ensure that the annular protrusions 111 on the two RTP pipes 100 are aligned. Therefore, it is necessary to further adjust the relative position between the two RTP pipes. In one embodiment, two adjustment components 300 are also included. Both adjustment components 300 are installed on the clamp 200 and each has an adjustment end extending into the clamp 200. The two adjustment ends abut against the outer walls of the two RTP pipes 100 respectively and are used to adjust the radial position of the two RTP pipes 100.

[0028] like Figure 3 As shown, the adjustment assembly 300 in this embodiment includes multiple adjusting screws 310 and multiple top blocks 320. The multiple adjusting screws 310 are evenly arranged circumferentially along the clamp 200, and the free ends of the multiple adjusting screws 310 extend through threaded holes in the clamp 200 to the gap between the clamp 200 and the RTP tube 100. The free ends of the multiple adjusting screws 310 are respectively fixedly connected to the multiple top blocks 320, and the multiple top blocks 320 abut against the outer wall of the RTP tube 100. By rotating the adjusting screws 310, the radial position of the end of the RTP tube 100 can be adjusted.

[0029] To facilitate the rotation of the adjusting screw 310, this embodiment also includes a hexagonal prism 311 fixedly connected to one end of the adjusting screw 310 located outside the clamp 200. The hexagonal prism 311 allows the adjusting screw 310 to be rotated using a socket tool.

[0030] After the position is adjusted, in order to facilitate locking the adjusting screw 310 in the current position, this embodiment also includes a weld point 312 formed between the adjusting screw 310 and the outer wall of the clamp 200.

[0031] To ensure the airtightness of the connection between the two RTP tubes 100, this embodiment also includes a detection component 400 and two sealing rings 240. The two sealing rings 240 are respectively fitted onto the outer walls of the two RTP tubes 100, forming a detection cavity between the two sealing rings 240. The detection end of the detection component 400 extends into the detection cavity for detecting the airtightness within the detection cavity. It is understood that the aforementioned sealing rings 240 are only used during the airtightness testing of the two RTP tubes 100.

[0032] like Figure 3-4 As shown, in one embodiment, the detection assembly 400 includes a detection air tube 410, a plug 420, and an airtightness tester. The clamp 200 has a detection hole 250 that communicates with the detection chamber. The detection air tube 410 is located outside the clamp 200. One end of the detection air tube 410 is fixedly connected to the detection hole 250, and the other end of the detection air tube 410 is detachably connected to the plug 420 or the airtightness tester.

[0033] During testing, the testing air tube 410 is connected to the airtightness tester. Air is supplied to the testing chamber to maintain the pressure at a preset value. If the two annular protrusions 111 are fully engaged, the pressure value returned by the airtightness test equals the preset value. If the two annular protrusions 111 are not fully engaged, indicating a leak, the pressure value returned by the airtightness test is lower than the preset value. In this case, the relative position of the two RTP tubes 100 can be adjusted using the aforementioned adjustment component 300. After testing, the testing air tube 410 is connected to the plug 420 to seal the testing chamber.

[0034] It is understandable that an airtightness tester is a structure that can be conceived by those skilled in the art. Its working principle is to inject gas at a certain pressure into the cavity to be measured. If there is a leak in the cavity to be measured, the feedback pressure value will be relatively small, thereby judging the airtightness of the cavity to be measured.

[0035] Compared with existing technologies: Both RTP pipes 100 have annular protrusions 111 on their mating surfaces. During the mating process, the two annular protrusions 111 abut against each other, thus sealing the RTP pipes 100. The clamp 200 is used to fix the two RTP pipes 100, making the two annular protrusions 111 tightly attached together, thereby achieving a sealed connection between the two RTP pipes 100. Since the clamp 200 only serves to fix the position between the two RTP pipes 100, the dimensional accuracy requirements of the connection structure are not high, reducing production costs.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An RTP tube leak tight connection structure for connecting two RTP tubes, characterized by, The device comprises two sets of annular protrusions and a clamp: The two sets of annular protrusions are formed on the abutting surfaces of the two RTP pipes, and the two sets of annular protrusions abut each other. The clamp is sleeved on the connection part of the two RTP pipes and is detachably connected with the two RTP pipes.

2. The RTP tube seal connection structure of claim 1, wherein, The RTP pipe comprises a straight pipe and a tapered sleeve, the tapered sleeve is fixedly sleeved on the straight pipe, the outer diameter of the tapered sleeve increases in the direction close to the adjacent RTP pipe, the inner walls of the two sides of the clamp are formed with tapered surfaces, and the tapered surfaces of the clamp abut against the outer wall of the tapered sleeve.

3. The RTP tube seal connection structure of claim 1, wherein, The annular protrusion comprises a plurality of annular protrusions concentrically arranged on the RTP pipe, and the diameters of the plurality of annular protrusions increase in the radial direction of the RTP pipe.

4. The RTP tube seal connection structure of claim 1, wherein, The clamp comprises two connecting half-rings, a plurality of connecting screws and a plurality of connecting nuts, the two connecting half-rings are oppositely arranged and form a cavity for clamping the connection part of the two RTP pipes, the plurality of connecting screws are arranged on the two sides of one of the connecting half-rings and are connected with the plurality of connecting nuts after penetrating through the two connecting half-rings.

5. The RTP tube product seal of claim 1, wherein, Further comprising two adjusting assemblies, both of which are mounted on the clamp and have an adjusting end extending into the clamp, both of which abut against the outer wall of the two RTP pipes for adjusting the radial position of the two RTP pipes.

6. The RTP tube-to-tube sealing connection of claim 5, wherein, The adjusting assembly comprises a plurality of adjusting screws and a plurality of top blocks, the plurality of adjusting screws are uniformly arranged in the circumferential direction of the clamp, the free ends of the plurality of adjusting screws extend into the gap between the clamp and the RTP pipe through the threaded holes formed on the clamp, the free ends of the plurality of adjusting screws are fixedly connected with the plurality of top blocks, and the plurality of top blocks abut against the outer wall of the RTP pipe.

7. The RTP tube product seal of claim 6, wherein, Further comprising a hexagonal prism fixedly connected with one end of the adjusting screw outside the clamp.

8. The RTP tube product seal of claim 6, wherein, Further comprising a welding point formed between the adjusting screw and the outer wall of the clamp.

9. The RTP tube product seal of claim 1, wherein, Further comprising a detection assembly and two sealing rings, the two sealing rings are respectively sleeved on the outer walls of the two RTP pipes, a detection cavity is formed between the two sealing rings, and a detection end of the detection assembly extends into the detection cavity for detecting the air tightness in the detection cavity.

10. The RTP tube product seal of claim 9, wherein, The detection assembly comprises a detection air pipe, a plug and an air tightness detector, a detection hole is formed in the clamp and communicates with the detection cavity, one end of the detection air pipe is fixedly connected with the detection hole, and the other end of the detection air pipe is detachably connected with the plug or the air tightness detector.

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