Universal pipeline pressing device

Abstract

The utility model relates to a universal pipeline pressing device, which comprises a shell with an annular inner cavity, a pressure detection air nozzle hole, a pressure detection air nozzle, a pressure detection air nozzle, a pressure detection air nozzle and a pressure detection air nozzle, and is characterized in that the inner side surface of the shell is provided with a groove for a pipeline to insert; the rotating disc is rotationally arranged in the annular inner cavity, first conical teeth are arranged on the outer side face of the rotating disc, and first threaded teeth are arranged on the inner side face of the rotating disc; the plurality of adjusting pieces are provided with second conical teeth meshed with the first conical teeth; the multiple clamping jaws are arranged in the shell at intervals in a radial sliding mode; the pipelines with different diameters are inserted into the grooves, the adjusting pieces are rotated to enable the clamping jaws to clamp the pipelines, the ends of the pipelines are fixed into the grooves, at the moment, the pipelines are connected with the bottom walls of the grooves in a sealed mode, air is introduced into the pressure detection air tap holes, and pressurization testing is conducted on the interiors of the pipelines. And a large amount of preparation time is saved, purchase of pressing blind flanges is reduced, and the production cost and the pressing time are saved.

Description

Technical Field

[0001] The utility model relates to a testing tool, in particular to a universal pipeline pressure-pressing device. Background Art

[0002] After the production of pressure pipelines is completed, the pressure test is required to be carried out on the pipelines. The pressure test is an important means to ensure the safety and quality of products. The product design and acceptance standards have clear provisions for the pressure test. The product design book of the relevant standards stipulates the pressure, medium, temperature, time, qualified conditions, etc. of the pressure test. In principle, the test process should be supervised on site; whether the pipeline can withstand the test pressure is detected to ensure the safety performance of the pipeline; and when the pipeline is pressurized, the two ends of the pipeline need to be blocked, and the pipeline is filled with water after the blind flange is installed for pressure testing. However, due to the variable specifications and models of the pipelines, it is necessary to prepare a variety of pressure test tools and blind flanges in advance to correspond to the corresponding pipelines when pressurizing the pipelines. However, this method not only increases the cost of the pipeline pressure test, but also has poor versatility, resulting in unnecessary waste of funds. On-site installation requires multiple people to operate together, which causes unnecessary waste of personnel and wastes the time of the pressure test.

[0003] In summary, how to achieve the pressurization of pipelines of different specifications by the same pressurization device has become a problem that technical personnel in this field need to solve urgently. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to realize the pressure-pressing of pipelines of different specifications by the same pressure-pressing device;

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The utility model discloses a universal pipeline pressure device, comprising: a shell with an annular inner cavity, a groove for inserting a pipeline is provided on the inner side of the shell, and a pressure detection air nozzle hole is provided at the center of the outer side of the shell; a rotating disk is rotatably arranged in the annular inner cavity, a first bevel gear is provided on the outer side of the shell, and a first thread gear is provided on the inner side of the shell; a plurality of adjusting members are radially rotatably arranged in the shell at intervals, and a second bevel gear meshed with the first bevel gear is provided; a plurality of clamping jaws are radially slidably arranged in the shell at intervals, and a second thread gear meshed with the first thread gear is provided; when the pipeline needs to be pressured, the end of the pipeline is attached to the bottom wall of the groove, the adjusting member is rotated, the rotating disk is driven to rotate through the meshing of the first bevel gear and the second bevel gear, and the plurality of clamping jaws are driven to synchronously move radially inward through the movement of the first thread gear and the second thread gear to clamp the pipeline;

[0007] In this solution, pipes of different diameters are inserted into the groove, and the clamping claws are rotated to clamp the pipe by adjusting the piece, and the end of the pipe is fixed in the groove. At this time, the pipe is sealed and connected to the bottom wall of the groove, and air is introduced into the pressure detection air nozzle hole to perform a pressure test on the pipe. This device is highly practical for conventional pipes, easy to install, and saves a lot of preparation time, reduces the purchase of pressure-tested blind flanges, and saves production costs and pressure-testing time.

[0008] The side of the clamping jaw that contacts the pipe is designed to be an arc-shaped surface, and the clamping jaw is matched with the outer circle of the pipe to ensure the clamping force of the clamping; the failure of the pressure-pressing tooling caused by the increase of the pipeline pressure is avoided, and the safety and practicality of the pressure-pressing process are improved.

[0009] How to realize radial movement of the clamping jaw relative to the housing, the utility model adopts the method of providing guide grooves on both sides of the clamping jaw; the housing is radially provided with a slide groove for the clamping jaw to be inserted; the two inner walls of the slide groove are provided with guide strips matching the guide groove;

[0010] When the clamping jaws enter into the slide groove, the guide groove and the guide bar cooperate with each other, so that the clamping jaws can only achieve linear motion, thereby clamping the pipe.

[0011] In order to achieve axial limitation of the pipeline, the utility model adopts a support portion on the top of the clamping jaw, and a connecting rod is arranged on the clamping jaw; a baffle, one end of which is threadedly connected to the connecting rod, and the other end cooperates with the support portion to press the limiting ring on the pipeline; a locking nut, which is threadedly connected to the connecting rod and abuts against the top surface of the baffle;

[0012] In this solution, the limiting tube is fixed to the pipeline. When the end of the pipeline is placed in the groove, the limiting ring abuts against the support part. At this time, through the cooperation of the connecting rod, baffle plate and locking nut, the end of the baffle plate is abutted against the other side of the limiting ring. In this way, the limiting ring is limited between the baffle plate and the support part, realizing axial limitation of the pipeline, further ensuring the firmness of the connection between the pipeline and the device.

[0013] The beneficial effects of the utility model are as follows: the utility model is a universal pipeline pressure testing device. Pipes of different diameters are inserted into the groove. The clamping claws are rotated to clamp the pipe and fix the end of the pipe in the groove. At this time, the pipe is sealed and connected to the bottom wall of the groove. Air is introduced into the pressure detection air nozzle hole to perform a pressure test on the pipe. This device is highly practical for conventional pipes and is easy to install. It also saves a lot of preparation time, reduces the purchase of pressure-testing blind flanges, and saves production costs and pressure-testing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the cooperation of the rotating disk, the adjusting member and the clamping claw;

[0018] Figure 4 It is a schematic diagram of the structure of the cooperation of the rotating disk, the adjusting member and the clamping claw from another perspective;

[0019] Figure 5 It is a schematic diagram of the structure of the inner side of the shell;

[0020] In the figure: 1-shell, 11-annular inner cavity, 12-slide groove, 13-guide strip, 2-pipeline, 21-limiting ring, 3-pressure detection air nozzle hole, 4-rotating plate, 41-first bevel gear, 42-first threaded gear, 5-adjusting member, 51-second bevel gear, 6-clamping claw, 61-second threaded gear, 62-guide groove, 63-support part, 7-connecting rod, 8-baffle, 9-locking nut. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] like Figure 1-5 As shown, the utility model is a universal pipeline pressure device, comprising: a shell 1 with an annular inner cavity 11, a groove for inserting a pipe 2 is provided on its inner side surface, and a pressure detection air nozzle hole 3 is provided at the center of its outer side surface; a rotating disk 4, which is rotatably arranged in the annular inner cavity 11, a first bevel gear 41 is provided on its outer side surface, and a first threaded gear 42 is provided on its inner side surface; a plurality of adjusting members 5, which are radially rotatably arranged in the shell 1 at intervals, and are provided with second bevel gears 51 meshing with the first bevel gears 41; a plurality of clamping jaws 6, which are radially slidably arranged in the shell 1 at intervals, and are provided with second threaded gears 61 meshing with the first threaded gears 42; when the pipe 2 needs to be pressured, the end of the pipe 2 is attached to the bottom wall of the groove, and the adjusting member 5 is rotated, and the rotating disk 4 is driven to rotate through the meshing of the first bevel gear 41 and the second bevel gear 51, and the first threaded gear 42 and the second threaded gear 61 are moved to drive the plurality of clamping jaws 6 to move radially inward synchronously to clamp the pipe 2;

[0023] In this solution, pipes of different diameters are inserted into the groove, and the clamping claws are rotated to clamp the pipe by adjusting the piece, and the end of the pipe is fixed in the groove. At this time, the pipe is sealed and connected to the bottom wall of the groove, and air is introduced into the pressure detection air nozzle hole to perform a pressure test on the pipe. This device is highly practical for conventional pipes, easy to install, and saves a lot of preparation time, reduces the purchase of pressure-tested blind flanges, and saves production costs and pressure-testing time.

[0024] like Figure 3-4 As shown, the side of the clamping jaw that contacts the pipe is designed to be an arc-shaped surface, and the clamping jaw is matched with the outer circle of the pipe to ensure the clamping force of the clamping; and the failure of the pressurizing tooling caused by the increase of the pipeline pressure is avoided, thereby improving the safety and practicality of the pressurizing process.

[0025] like Figure 2-5 As shown, how to realize radial movement of the clamping jaw relative to the housing, the utility model adopts that the two sides of the clamping jaw 6 are provided with guide grooves 62; the housing 1 is radially provided with a slide groove 12 for the clamping jaw 6 to be inserted; the two inner walls of the slide groove 12 are provided with guide strips 13 matching the guide groove 62;

[0026] When the clamping jaws enter into the slide groove, the guide groove and the guide bar cooperate with each other, so that the clamping jaws can only achieve linear motion, thereby clamping the pipe.

[0027] like Figure 1-5 As shown, in order to achieve axial limitation of the pipeline, the utility model adopts a support portion 63 on the top of the clamping jaw 6, and a connecting rod 7 is provided on the clamping jaw 6; a baffle 8, one end of which is threadedly connected to the connecting rod 7, and the other end cooperates with the support portion 63 to press the limiting ring 21 on the pipeline 2; a locking nut 9, which is threadedly connected to the connecting rod 7 and abuts against the top surface of the baffle 8;

[0028] In this solution, the limiting tube is fixed to the pipeline. When the end of the pipeline is placed in the groove, the limiting ring abuts against the support part. At this time, through the cooperation of the connecting rod, baffle plate and locking nut, the end of the baffle plate is abutted against the other side of the limiting ring. In this way, the limiting ring is limited between the baffle plate and the support part, realizing axial limitation of the pipeline, further ensuring the firmness of the connection between the pipeline and the device.

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A universal pipeline pressure device, characterized in that: include: A shell having an annular inner cavity, a groove for inserting a pipe is provided on its inner side, and a pressure detection air nozzle hole is provided at the center of its outer side; A rotating disk, which is rotatably disposed in the annular inner cavity, and has first bevel teeth disposed on its outer side and first thread teeth disposed on its inner side; A plurality of adjusting members are arranged in the housing for radial rotation at intervals and are provided with second bevel teeth meshing with the first bevel teeth; A plurality of clamping jaws, which are radially slidably arranged in the housing at intervals, and are provided with second thread teeth meshing with the first thread teeth; When the pipeline needs to be pressurized, the end of the pipeline is placed in contact with the bottom wall of the groove, and the adjusting member is rotated. The engagement of the first bevel teeth and the second bevel teeth drives the rotating disk to rotate, and the movement of the first thread teeth and the second thread teeth drives the multiple clamps to move radially inward synchronously to clamp the pipeline.

2. A universal pipeline pressure device according to claim 1, characterized in that: The side of the clamping jaw that contacts the pipe is an arc-shaped surface.

3. A universal pipeline pressure device according to claim 1, characterized in that: Guide grooves are provided on both sides of the clamping jaws; The housing is radially provided with a slide groove for the clamping claw to be inserted into; The two inner walls of the slide groove are provided with guide strips matching the guide groove.

4. A universal pipeline pressure device according to claim 1, characterized in that: The top of the clamping jaw has a supporting portion.

5. A universal pipeline pressure-pressing device according to claim 4, characterized in that: A connecting rod is provided on the clamping jaw; A baffle, one end of which is threadedly connected to the connecting rod, and the other end of which cooperates with the supporting portion to press the limiting ring on the pipeline; A locking nut is threadably connected to the connecting rod and abuts against the top surface of the baffle.

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