CN223217230U - Steel pipe nondestructive water pressure clamp - Google Patents

Abstract

The utility model provides a steel pipe nondestructive hydraulic clamp which comprises a blocking cap, a stop block, a clamp body, a C-shaped sleeve, an ER chuck and an ER pressing cap, wherein the blocking cap is connected to one end of the clamp body, the stop block is arranged between the blocking cap and the clamp body, the ER pressing cap is connected to the other end of the clamp body, the ER chuck is arranged between the ER pressing cap and the clamp body, the C-shaped sleeve is arranged in the ER chuck, and the ER chuck is radially folded during screwing of the ER pressing cap and the clamp body. The utility model adopts a combination mode of non-metal C-shaped sleeve and ER series chuck clamping, basically has no damage to the surface of the steel pipe under the condition of keeping certain clamping force, can be directly taken down after the pressing is finished, does not need to cut off the clamping section, and avoids material loss. The clamp can be repeatedly used, one set of clamp can be used for pressing for multiple times, and the durability is good.

Description

Steel pipe nondestructive water pressure clamp

Technical Field

The utility model relates to the field of steel pipe water pressure testing, in particular to a steel pipe nondestructive water pressure clamp.

Background

The steel pipe is usually subjected to water pressure test when leaving the factory, and the purpose of the steel pipe is to verify the quality and performance of the steel pipe, so that the sealing performance and the bearing capacity of the steel pipe before the steel pipe is put into use can meet the design requirements.

The common hydraulic clamp generally uses a clamping sleeve type or a pressure clamp, wherein the clamping sleeve type clamp has good tightness and convenient installation, and has the defects that the clamping sleeve can not be reused, the surface of a steel pipe can be crushed when the clamping sleeve is fastened, and the deformed steel pipe is required to be partially cut after being pressed, so that certain material loss can be caused. The pressure clamp can be reused, but certain pressure injury can be caused to the surface of the steel pipe during fastening, and the deformed steel pipe part still needs to be cut off after the pressing is finished, so that certain material loss can be caused.

Disclosure of utility model

The utility model aims to provide a nondestructive hydraulic clamp for a steel pipe, which solves the technical problems that the existing hydraulic clamp for the steel pipe in the background art is not reusable and the deformed part is cut off after the pressing is finished to cause material loss.

In order to achieve the above purpose, the utility model provides a nondestructive hydraulic clamp for a steel pipe, which comprises a blocking cap, a stop block, a clamp body, a C-shaped sleeve, an ER chuck and an ER pressing cap, wherein the blocking cap is connected with one end of the clamp body, the stop block is arranged between the blocking cap and the clamp body, the ER pressing cap is connected with the other end of the clamp body, the ER chuck is arranged between the ER pressing cap and the clamp body, the C-shaped sleeve is arranged in the ER chuck, and the ER chuck is radially folded during screwing of the ER pressing cap and the clamp body.

Further, a seal is disposed in the stop.

Further, the C-shaped sleeve is a nylon C-shaped sleeve.

Compared with the prior art, the steel pipe clamping part has the beneficial effects that the steel pipe clamping part adopts a combination mode of clamping by the nylon C-shaped sleeve and the ER series clamping head, the surface of the steel pipe is basically not damaged under the condition of keeping certain clamping force, the steel pipe can be directly taken down after the pressing is finished, the clamping section is not required to be cut off, and the material loss is avoided. The clamp can be repeatedly used, one set of clamp can be used for pressing for multiple times, and the durability is good.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an exploded perspective view of the present utility model;

In the figure, 1, a blocking cap, 2, a stop block, 3, a sealing element, 4, a clamp body, 5, a C-shaped sleeve, 6, an ER chuck, 7, an ER press cap, 8, a steel pipe, 9, a first bulge, 10, a step hole, 11, a first conical surface, 12, a front conical surface, 13, a second bulge, 14, a flat position, 15, a rear end, 16, a front end, 17, a second conical surface, 18, a rear conical surface, 19 and an end surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhanging, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

The utility model relates to a nondestructive hydraulic clamp for a steel pipe, which comprises a blocking cap 1, a stop block 2, a clamp body 4, a C-shaped sleeve 5, an ER chuck 6 and an ER pressing cap 7. The clamp body 4 is cylindrical, and is provided with a front end 15 with a slightly smaller radial direction and a rear end 16 with a slightly larger radial direction, external threads are machined on the front end 15 and the rear end 16, and a flat position 14 for clamping is arranged on the rear end 16. The external thread at the front end 15 is matched with the pressurizing interface of the hydraulic press, and can be directly connected with the pressurizing interface of the hydraulic press through threads. The fixture body 4 is internally provided with a cavity penetrating from the front end 15 to the rear end 16, the cavity comprises a stepped hole 10 at the front end 15 and a first conical surface 11 at the rear end 16, and the first conical surface 11 is tapered inwards from the end part of the rear end 16. The stop 2 is L-shaped with a transverse portion extending into a stepped bore 10 at the front end 15 of the clamp body 4, and a radial first projection 9 abuts against the end face of the front end 15. The inside of the plugging cap 1 is provided with an internal thread matched with the front end 15 of the clamp body 4, and the plugging cap 1 is in threaded connection with the front end 15 of the clamp body 4 and limits the stop block 2 therein.

The ER chuck 6 is arranged at the rear end 16 of the clamp body 4, and the ER chuck 6 comprises a front conical surface 12 and a rear conical surface 18, wherein the taper of the front conical surface 12 is basically the same as the first conical surface 11 at the rear end 16 of the clamp body 4, and the taper of the rear conical surface 18 is basically the same as the second conical surface 17 in the ER press cap 7. The ER press cap 7 is internally provided with an internal thread, and the ER press cap 7 is screwed onto the rear end 16 of the clamp body 4, defining the ER chuck 6 at the rear end 16 of the clamp body 4. The C-shaped sleeve 5 is arranged in the ER chuck 6, the C-shaped sleeve 5 is L-shaped, has a C-shaped cross section, is radially provided with a second bulge 13, and the second bulge 13 can be abutted against the end face 19 of the ER chuck 6. Before the ER press cap 7 is screwed with the clamp body 4, the C-shaped sleeve 5 can axially move in the ER chuck 6. During tightening of the ER press cap 7 with the clamp body 4, the second tapered surface 17 of the ER press cap 7 presses against the rear tapered surface 18 of the ER chuck 6, forcing the front tapered surface 12 of the ER chuck 6 against the first tapered surface 11 of the clamp body 4. The ends of the ER chuck 6 are forced to shrink, thereby clamping the C-shaped sleeve 5.

The use principle of the utility model is that two sets of clamps are taken, the blocking cap 1 in one set of clamp is unscrewed, the ER pressing cap 7 is unscrewed, the steel pipe 8 to be pressed is taken out, one end of the steel pipe 8 penetrates from the C-shaped sleeve 5 until penetrating the whole clamp, and the end part of the steel pipe 8 is adjusted to slightly protrude out of the stop block 2. The ER press cap 7 is screwed on the rear end 16 of the clamp body 4 by using an ER wrench under the condition that the steel pipe 8 is ensured not to move, the steel pipe 8 is clamped, and then the front end 15 of the clamp body 4 is connected with a pressurizing interface of a hydraulic press in a threaded manner. The blocking cap 1 of the other set of clamps is then unscrewed and the ER press cap 7 is unscrewed. The other end of the steel pipe 8 to be pressed penetrates from the C-shaped sleeve 5 until penetrating through the whole clamp, the steel pipe 8 is adjusted until the end part slightly protrudes, and then the plugging cap 1 is slowly screwed into the front end 15 of the other clamp body 1 until being screwed. The ER press cap 7 is screwed onto the rear end 16 of the clamp body 4 using an ER wrench to clamp the steel pipe 8 with assurance that the steel pipe 8 is not moving. The hydraulic pressure test can be carried out by starting the hydraulic press, and after the pressing is finished, the ER press caps 7 at the two ends of the steel pipe 8 are loosened and can be taken down.

In a preferred embodiment, the stop 2 may be provided with an internal groove in a lateral part thereof, in which groove a seal 3 may be provided, the seal 3 providing a good seal between the steel pipe 8 and the clamp during pressing. The C-shaped sleeve 5 is made of nonmetal materials, preferably nylon, and has excellent mechanical strength, better wear resistance, light texture and no damage to the pipe wall.

The foregoing describes the basic principles and advantages of the present utility model, and it is to be understood that the above examples are illustrative only of the technical aspects of the present utility model and not limiting thereof. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate from the disclosure that modifications may be made to the solutions recited in the foregoing embodiments, or that equivalents may be substituted for in part or all of the features thereof. Any obvious substitutions without departing from the inventive concept are within the scope of the utility model.

Claims (3)

1. The utility model provides a harmless water pressure anchor clamps of steel pipe, its characterized in that, including stifled cap (1), dog (2), anchor clamps body (4), C word cover (5), ER chuck (6), ER press cap (7), stifled cap (1) are connected the one end of anchor clamps body (4), dog (2) set up stifled cap (1) with between anchor clamps body (4), ER press cap (7) are connected anchor clamps body (4) other end, ER chuck (6) set up ER press cap (7) with between anchor clamps body (4), C word cover (5) set up in ER chuck (6), ER press cap (7) with during anchor clamps body (4) screw up, ER chuck (6) radially draw in.

2. A non-destructive hydraulic clamp for steel pipes according to claim 1, characterized in that the stop (2) is provided with a sealing element (3).

3. A non-destructive hydraulic clamp for steel pipes according to claim 2, characterized in that the C-sleeve (5) is a nylon C-sleeve.