CN221078310U - External closing pressing device for hydrostatic test - Google Patents

Abstract

The utility model discloses an external closing and pressing device for a hydraulic test, which belongs to the technical field of pipeline strength tests, and is used for sealing an external interface of a connecting pipe which is arranged on a pipeline to be tested; including the screw rod that runs through the takeover along the center pin direction and arrange in the stop device and the closing device at screw rod both ends in, stop device stretches into in the takeover along with the screw rod, with the one end separation of screw rod at the intercommunication department of waiting test pipeline and takeover, when carrying out hydrostatic test, stop device withstands water pressure, stabilizes spacingly to the one end of screw rod, closing device is located the outside opening part of takeover, when carrying out hydrostatic test, seals the outside opening of takeover, to waiting test pipeline of less bore, blocks up the takeover mouth of pipe of pipeline wall in the outside of waiting test pipeline, and installation and dismantlement are convenient, have avoided the damage to the mouth of pipe and subsequent dismantlement operation.

Description

External closing pressing device for hydrostatic test

Technical Field

The utility model belongs to the technical field of pipeline strength tests, and particularly relates to an external closing and pressing device for a hydraulic test.

Background

The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy.

When carrying out the pressure test to boiler pipe, need carry out the shutoff to the takeover of pipeline, generally utilize welded mode, weld the blind plate and carry out the shutoff at takeover opening part, blind plate welding and dismantlement work are loaded down with trivial details, easily damage the tip of takeover, still need restore the mouth of pipe after dismantling the blind plate.

Disclosure of utility model

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the external closing and compressing device for the hydrostatic test, which is convenient to install and disassemble, prevents the damage to the pipe orifice and the subsequent disassembling operation, and solves the problems in the background technology by plugging the pipe orifice of the pipe wall outside the pipe to be tested aiming at the pipe to be tested with smaller caliber.

The technical scheme adopted by the utility model is as follows: the hydraulic test external closing and pressing device is arranged on a connecting pipe of a pipeline to be tested and performs closing operation on an external interface of the connecting pipe; including the screw rod that runs through the takeover along the center pin direction and arrange in the stop device and the closing means at screw rod both ends in the takeover in, stop device stretches into the intercommunication department of taking over with the screw rod along with the screw rod, with the one end separation of screw rod at waiting test pipeline and takeover, when carrying out hydrostatic test, stop device keeps out water pressure, stabilizes spacingly to the one end of screw rod, closing means is located the outside opening part of takeover, when carrying out hydrostatic test, seals the outside opening of takeover.

Further, the sealing device comprises a sealing piece and a pipe baffle, wherein the sealing piece is used for sealing an external connector of the connecting pipe, and the sealing piece is movably penetrated by a screw rod; the pipe baffle is movably penetrated by the screw rod, is arranged above the sealing piece, is fixed on the screw rod through a bolt, and extrudes the sealing piece to the end face of the pipe orifice of the connecting pipe.

Further, the stopping device comprises a mounting frame and a baffle plate; the mounting frame is fixed at one end of the screw extending into the connecting pipe and has a preset width so that the mounting frame can extend into the connecting pipe along with the screw and pass through a communicating position of a pipeline to be tested for mounting operation; the baffle is rotatably arranged on the mounting frame and is provided with a first state and a second state; when the baffle rotates to a first state, the baffle can extend into the communication position between the connecting pipe and the pipeline to be tested along with the mounting frame; when the screw rod rotates to be in the second state, the baffle can block the connection part of the connecting pipe in the pipeline to be tested, and the screw rod is limited to extend out of the connecting pipe.

Further, a sealing groove is formed in the pipe baffle plate in a extending mode along the radial direction by taking a position penetrated by the screw as the center, a sealing piece is arranged in the sealing groove, the sealing piece is movably penetrated by the screw, and sealing operation is carried out on the position of the pipe baffle plate penetrated by the screw; and a pressing plate is arranged on the sealing groove to extrude the sealing piece.

Further, the mounting frame forms an inverted U-shaped support frame body at one end of the screw rod extending into the connecting pipe, and the baffle plate rotates between two side walls of the support frame body through the pin shaft.

After the structure is adopted, the utility model has the following beneficial effects:

(1) The detachable pipe connecting device is detachably arranged at the pipe connecting position, the pipe connecting device is sealed at the outer side of a pipeline to be tested, and the detachable pipe connecting device is particularly suitable for pipelines with smaller calibers, is convenient to install and detach, and avoids damage to a pipe orifice and subsequent pipe orifice repairing operation;

(2) The baffle is utilized, the water pressure inside the pipeline to be tested is directly resisted at the communication position of the pipeline to be tested and the connecting pipe, the sealing piece is prevented from being directly impacted, the sealing piece is extruded to the pressed position of the baffle by the pressing plate and the pipe baffle outside the connecting pipe, and the sealing effect of the sealing piece to the pipe orifice of the connecting pipe is ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

FIG. 1 is a schematic diagram of the overall structure of a hydraulic test external closing and pressing device;

Fig. 2 is a schematic view of a hydraulic test external closing pressing device according to the present utility model in a state of being inserted into a connecting tube.

In the drawings: 1. the pipeline to be tested comprises 2 parts of connecting pipes, 3 parts of screws, 4 parts of sealing elements, 5 parts of pipe baffles, 6 parts of mounting frames, 7 parts of pin shafts, 8 parts of baffles, 9 parts of sealing grooves, 10 parts of sealing elements, 11 parts of pressing plates.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all 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 is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The method comprises the steps of performing a hydraulic test on a boiler pipeline, blocking a pipe orifice of a connecting pipe 2 by using a blind plate, cutting the blind plate after the test, repairing the pipe orifice, and carrying out complex operation, so that the efficiency is affected; specifically, including the screw rod 3 that runs through takeover 2 along the center pin direction and arrange in the stop device and the closing means at screw rod 3 both ends, stop device stretches into takeover 2 along with screw rod 3 in, with the one end separation of screw rod 3 at the intercommunication department of waiting test pipeline 1 and takeover 2, when carrying out hydrostatic test, stop device withstands water pressure, stabilizes spacing to the one end of screw rod 3, closing means is located the outside opening part of takeover 2, and when carrying out hydrostatic test, the outside opening of butt joint pipe 2 seals.

Example 1

On the basis of the above technical solutions, with reference to fig. 1 and 2, the closing device is designed to comprise a closing element 4 and a pipe baffle 5, wherein the closing element 4 is used for plugging the external interface of the connecting pipe 2, and the closing element 4 is movably penetrated by a screw 3, wherein, preferably, the closing element 4 is selected as a rubber pad, and the pipe baffle 5 is movably penetrated by the screw 3, is arranged above the closing element 4, is fixed on the screw 3 through a bolt, and extrudes the closing element 4 towards the end face of the pipe orifice of the connecting pipe 2.

Wherein, the pipe baffle 5 is provided with a sealing groove 9 extending along the radial direction by taking the penetration position of the screw rod 3 as the center, a sealing element 10 is arranged in the sealing groove 9, the sealing element 10 is penetrated actively by the screw rod 3, the position of the screw rod 3 penetrating the pipe baffle 5 is sealed, and the sealing element 10 is preferably a sealing ring, is filled in the sealing groove 9 and wrapped outside the screw rod 3, and seals the penetration position; the sealing groove 9 is provided with the pressing plate 11, the sealing element 10 is extruded, the bottom end of the pressing plate 11 can extend into the sealing groove 9 to pressurize the sealing element 10, meanwhile, the upper end of the pressing plate 11 is slightly larger than the sealing groove 9, and the positions of the pressing plate 11 and the pipe baffle 5 below the pressing plate 11 are fixed by bolts.

Example 2

Further, on the basis of embodiment 1, the stopper is designed to include a mounting bracket 6 and a baffle 8; the mounting frame 6 is fixed at one end of the screw 3 extending into the connecting pipe 2 and has a preset width so that the mounting frame can extend into the connecting pipe 2 along with the screw 3 and is used for mounting operation at a position communicated with the pipeline 1 to be tested; the baffle plate 8 is rotatably arranged on the mounting frame 6, and has a first state and a second state when the mounting frame 6 rotates; when the device rotates to a first state, the baffle plate 8 can extend into the communication part between the connecting pipe 2 and the pipeline 1 to be tested along with the mounting frame 6; when the baffle plate 8 rotates to the second state, the baffle plate 8 can be blocked at the communication position of the connecting pipe 2 in the pipeline 1 to be tested, the limiting screw rod 3 extends out of the connecting pipe 2, the baffle plate 8 is a T-shaped baffle plate 8, and referring to fig. 1 and 2, when the baffle plate 8 enters the connecting pipe 2 along with the screw rod 3, the baffle plate 8 rotates to the first state, namely, two symmetrical two ends of the T-shaped plate are arranged along the central axis direction of the connecting pipe 2, and at the moment, the baffle plate 8 can enter the pipeline 1 to be tested along with the screw rod 3 through the connecting pipe 2; after the baffle 8 enters the pipeline 1 to be tested in the first mode, the tool is used for extending into the pipeline 1 to be tested, the T-shaped plate is shifted, the T-shaped plate is rotated into the second state, namely, the symmetrical two ends of the T-shaped plate are perpendicular to the central axis direction of the connecting pipe 2, at the moment, the symmetrical two ends of the baffle 8 prop against the outside of one end of the connecting pipe 2, which is positioned in the pipeline 1 to be tested, and the limiting screw 3 extends out of the connecting pipe 2.

In this embodiment, it is preferable that the mounting frame 6 is formed by two steel plates which are distributed oppositely and welded on two sides of one end of the screw 3 extending into the connecting tube 2, so as to form an inverted U-shaped supporting frame body, and the baffle 8 rotates between two side walls of the supporting frame body through the pin shaft 7.

Working principle: the device is suitable for testing the water pressure of the product of the upper tube bundle (connecting tube 2) with small tube diameter (mother tube, people can not go in); when the hydraulic test device is specifically used, the T-shaped baffle 8 is rotated to enable the hydraulic test device to enter a main pipe (a pipeline to be tested 1) along with the screw 3 through a pipe bundle (the connecting pipe 2), then a tool is used to extend into the main pipe from the connecting pipe 2 or the pipeline to be tested 1, the T-shaped baffle 8 is rotated to enable the hydraulic test device to be clamped outside one end of the connecting pipe 2 positioned in the main pipe, one end of the limiting screw 3 positioned in the main pipe extends out of the connecting pipe 2, then the sealing piece 4, the pipe baffle 5, the sealing piece 10 and the pressing plate 11 are sequentially installed on the screw 3, and a nut is tightened to enable the hydraulic test device to seal the pipe bundle, so that the hydraulic test device can be used for hydraulic test; after the test, the nuts, the press plate 11, the sealing member 10, the tube baffle 5 and the closing member 4 were removed in this order, and the T-shaped baffle 8 was rotated by a tool so as to be taken out of the tube bundle.

It should be noted that, holes are formed in the trapezoid baffle plate 8, holes are formed in the two steel plates, the two steel plates are welded and fixed on the screw 3, the trapezoid baffle plate 8 is installed with the steel plates through the pin shaft 7, and the trapezoid baffle plate 8 can rotate around the pin shaft 7.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (5)

1. The hydraulic test external closing and pressing device is characterized in that the device is arranged on a connecting pipe of a pipeline to be tested, and performs sealing operation on an external interface of the connecting pipe; including the screw rod that runs through the takeover along the center pin direction and arrange in the stop device and the closing means at screw rod both ends in the takeover in, stop device stretches into the intercommunication department of taking over with the screw rod along with the screw rod, with the one end separation of screw rod at waiting test pipeline and takeover, when carrying out hydrostatic test, stop device keeps out water pressure, stabilizes spacingly to the one end of screw rod, closing means is located the outside opening part of takeover, when carrying out hydrostatic test, seals the outside opening of takeover.

2. The hydrostatic test external closure device of claim 1, wherein said closure device comprises:

The sealing piece is used for sealing an external connector of the connecting pipe and is movably penetrated by the screw rod;

The pipe baffle is movably penetrated by the screw rod, is arranged above the sealing piece, is fixed on the screw rod through a bolt, and extrudes the sealing piece to the end face of the pipe orifice of the connecting pipe.

3. The hydrostatic test external closure compression device of claim 1, wherein the stop means comprises:

The mounting frame is fixed at one end of the screw extending into the connecting pipe and has a preset width so that the mounting frame can extend into the connecting pipe along with the screw and pass through the communicating position of the pipeline to be tested for mounting operation;

The baffle is rotatably arranged on the mounting frame and is provided with a first state and a second state; when the baffle rotates to a first state, the baffle can extend into the communication position between the connecting pipe and the pipeline to be tested along with the mounting frame; when the screw rod rotates to the second state, the baffle can block the connection part of the connecting pipe in the pipeline to be tested, and the screw rod is limited to extend out of the connecting pipe.

4. The hydrostatic test external closing and pressing device according to claim 2, wherein: the pipe baffle is provided with a sealing groove in a radial direction in an extending mode by taking a position penetrated by the screw as a center, a sealing piece is arranged in the sealing groove, the sealing piece is movably penetrated by the screw, and sealing operation is carried out on the position of the pipe baffle penetrated by the screw; and a pressing plate is arranged on the sealing groove to extrude the sealing piece.

5. A hydrostatic test external closure compression device according to claim 3, wherein: the mounting frame forms an inverted U-shaped support frame body at one end of the screw rod extending into the connecting pipe, and the baffle plate rotates between two side walls of the support frame body through the pin shaft.