Pressure testing device for pressure-bearing pipeline valve on construction site

Abstract

The utility model belongs to the technical field of pipeline valve detection, and particularly discloses a construction site pressure-bearing pipeline valve pressure test device which comprises a test bench and a main pipe, the main pipe is fixedly connected to the top of the test bench, one end of the main pipe is connected with a flange plate, and the other end of the main pipe is connected with a pressure gauge. An auxiliary sealing mechanism is arranged on the pressure test branch pipe; empty grooves are formed in the left side and the right side of the bottom of the test bed respectively, supports are hinged into the empty grooves, and folding clamping mechanisms are arranged at the hinged positions. The tail end of the pressure test branch pipe is connected with the valve pipeline through the auxiliary sealing mechanism, so that the pull-down stress generated by the gravity of the pipeline to a connecting thread can be counteracted, the threaded connection is always kept in a tight state in the whole pressure test process, and the sealing performance of a test loop is greatly improved. And meanwhile, the bracket of the test device can be folded, so that the pipeline can be protected by the bracket while the storage is convenient, and the pipeline is prevented from being damaged by collision.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline valve detection technical field, concretely relates to a construction site pressure-bearing pipeline valve pressure test device. BACKGROUND

[0002] In the construction site, the quality and the leakproofness of the valve pipeline valve are important, so carry out pressure test to the valve pipeline valve is the key link of ensuring the safe and stable operation of the pipeline system, to ensure that the valve pipeline performance meets the requirements, but the existing valve pipeline valve pressure test device has certain defects, has seriously affected the test efficiency and the convenience of equipment.

[0003] First, the existing test device adopts threaded connection and flange connection at the pipe connection port position, wherein the threaded connection mainly relies on the cooperation between threads and sealing materials to realize sealing, and usually needs to connect the valve pipeline and the test device through threaded connection to build a complete test loop.

[0004] However, the prior art often ignores the influence of the weight of the valve pipeline on the connecting part, due to the influence of the weight of the valve pipeline to be tested, when the threaded connection is carried out at the test connection port of the test device, the gravity of the pipeline will generate a downward pulling force on the connecting thread, resulting in that the threaded connection is not tight, and the sealing property of the pipeline is poor. At the same time, the existing test device is usually a whole fixed structure, when the test device is in a non-use state, its large volume occupies a large space, whether in the temporary storage or in the transportation process in the construction site, it is extremely inconvenient, and because it cannot be folded and stored, the test pipeline part can only be exposed outside, which is easy to be damaged by collision, shortens the service life of the equipment, and increases the frequency and cost of equipment maintenance. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model designs a construction site pressure-bearing pipeline valve pressure test device to improve the sealing property of the test pipeline, and facilitate folding and storage of the test device and protection of the test pipeline.

[0006] The construction site pressure-bearing pipeline valve pressure test device of the utility model, including test table, main pipe, the main pipe fixed connection in test table top, the main pipe one end is connected with flange, the main pipe other end is connected with pressure gauge, still be connected with a plurality of pressure test branch pipes on the main pipe, be provided with auxiliary sealing mechanism on the pressure test branch pipe, the auxiliary sealing mechanism includes the connecting frame fixed connection with pressure test branch pipe, the connecting frame is fixedly connected with sealing thread sleeve on, the connecting frame inside fixedly connected with a plurality of outside unfolding spring plates, the outside unfolding spring plate is increasing from left to right in thickness, the connecting frame outer surface is slidably connected with the ring, the outside unfolding spring plate outer surface is slidably connected with sliding ring, and the sliding ring is fixedly connected with the driving connecting plate between the ring and the ring.

[0007] The left and right sides of the bottom of the test bench are respectively provided with an empty groove, and a support is hingedly connected in the empty groove, and a folding clamping mechanism is arranged at the hinge connection position; the folding clamping mechanism comprises a pull plate arranged on the outer wall of the test bench, one side of the pull plate is fixedly connected with a pull ring, and the other side of the pull plate is fixedly connected with a connecting column; the connecting column penetrates through the wall of the test bench and enters the empty groove, a limiting plate is fixedly connected to the connecting column, a supporting spring is further wrapped on the connecting column, and the supporting spring is supported between the limiting plate and the inner wall of the test bench; and the other side of the limiting plate is fixedly connected with a clamping plate, and the clamping plate is clamped with two clamping grooves arranged at the top of the support at different strokes.

[0008] The support is a telescopic support, which comprises two outer sleeve legs and two embedded legs, the top of the outer sleeve leg is hingedly connected in the empty groove, the embedded leg is slidingly connected to the inside of the outer sleeve leg, the bottom of the embedded leg is further connected with a pulley, the outer spring pin is arranged on the upper side of the embedded leg, a plurality of lifting clamping holes are arranged on one side of the outer sleeve leg corresponding to the spring pin, and the lifting clamping hole is clamped with the spring pin; the two outer sleeve legs are further fixedly connected with a baffle, and the baffle is fixedly connected with a handle.

[0009] The beneficial effects of the present application are as follows:

[0010] Compared with the prior art, the auxiliary sealing mechanism is arranged, a plurality of pressure test branch pipes of different models can be connected, a plurality of valve pipes can be connected, the pressure of the valve pipe is tested, when the valve pipe is installed into the pressure test branch pipe, the valve pipe is inserted into the pressure test branch pipe, the sealing threaded sleeve and the threaded connection assembly matched with the sealing threaded sleeve are used to fix the valve pipe on the pressure test branch pipe, the knob is rotated, the sliding ring slides on the surface of the outwardly unfolded elastic plate, all the outwardly unfolded elastic plates are simultaneously inwards contracted, the function of fixing the valve pipe is further played, the downward pulling stress generated by the gravity of the pipe on the threaded connection is offset, the threaded connection is always kept in a tight state during the whole pressure test process, and the sealing property of the test loop is greatly improved. Meanwhile, the support of the test device can be folded, the pipe can be protected by the support, and the pipe is prevented from being collided. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following briefly introduces the drawings needed to be used in the embodiment description.

[0012] Figure 1 It is the overall structure schematic diagram of the test device in the embodiment.

[0013] Figure 2 It is the support folding state structure schematic diagram of the test device in the embodiment.

[0014] Figure 3is the structure schematic view of the auxiliary sealing mechanism in the embodiment.

[0015] Figure 4 is the structure schematic view of the auxiliary sealing mechanism and the valve pipeline in the embodiment.

[0016] Figure 5 is the structure schematic view of the folding clamping mechanism in the embodiment.

[0017] Figure 6 is the structure schematic view of the support in the embodiment.

[0018] Figure 7 is the structure schematic view of the spring pin and the lifting clamping hole connection in the embodiment.

[0019] In the drawings, the structure names represented by each reference sign are as follows:

[0020] 1-test bench, 2-main pipe, 3-flange plate, 4-pressure gauge, 5-pressure test branch pipe, 6-auxiliary sealing mechanism, 601-connection frame, 602-sealing threaded sleeve, 603-outer unfolding elastic plate, 604-pull ring, 605-sliding ring, 606-pull connection plate, 7-support, 701-outer sleeve leg, 702-embedded leg, 703-pulley, 704-lifting clamping hole, 705-stop plate, 706-handle, 707-clamping groove, 8-spring pin, 9-folding clamping mechanism, 901-pull plate, 902-pull ring, 903-connection column, 904-support spring, 905-limiting plate, 906-clamping plate, 10-empty slot, 11-supporting plate, 12-valve pipeline, 13-threaded cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0022] Embodiment 1

[0023] In order to improve the sealing performance of the valve pressure test device and facilitate the folding and storage of the test device and the storage and protection of the test pipeline, referring to Figures 1 to 7As shown, a construction site pressure pipeline valve pressure test device is proposed, which comprises a test table 1, a main pipe 2, the main pipe 2 is fixedly connected to the top of the test table 1 through the supporting plate 11, the pipe diameter of the main pipe 2 is DN200, one end of the main pipe 2 is connected with the flange plate 3 corresponding to the pipe diameter, the flange plate 3 is connected with the water inlet pipe, and the water inlet pipe is also provided with a pressure pump to provide pressure for the inside of the main pipe 2, the other end of the main pipe 2 is connected with the pressure gauge 4 to display the pressure inside the main pipe 2; the main pipe 2 is also connected with six pressure test branch pipes 5, the pipe diameters of the pressure test branch pipes 5 are DN150, DN100, DN80, DN65, DN40 and DN32 respectively, the end of the pressure test branch pipe 5 with a pipe diameter greater than or equal to 100mm is connected with the flange plate 3, and the pressure test branch pipe 5 with a pipe diameter less than 100mm is connected with the valve pipeline 12 through the auxiliary sealing mechanism 6 arranged at the end.

[0024] The auxiliary sealing mechanism 6 comprises a connecting frame 601 fixedly connected with the pressure test branch pipe 5, a sealing threaded sleeve 602 fixedly connected with the connecting frame 601, a plurality of outwardly expanding elastic plates 603 fixedly connected inside the connecting frame 601, the outwardly expanding elastic plates 603 increasing in thickness from left to right, a pulling ring 604 slidingly connected with the outer surface of the connecting frame 601, a sliding ring 605 slidingly connected with the outer surface of the outwardly expanding elastic plate 603, and a pulling connecting plate 606 fixedly connected between the pulling ring 604 and the sliding ring 605.

[0025] When the auxiliary sealing mechanism 6 is connected with the valve pipeline 12, the front end of the valve pipeline 12 is inserted into the pressure test branch pipe 5, and the threaded cover 13 on the valve pipeline 12 is connected with the sealing threaded sleeve 602, so that the valve pipeline 12 is fixed on the pressure test branch pipe 5, a rubber ring is arranged on the inner end surface of the threaded cover 13, after the threaded sleeve is tightened, the rubber ring tightly abuts against the outer end surface of the pressure test branch pipe 5, further sealing, then the pulling ring 604 is pulled, the sliding ring 605 slides on the surface of the outwardly expanding elastic plate 603, the pulling connecting plate 606 presses all the outwardly expanding elastic plates 603, the outwardly expanding elastic plates 603 simultaneously shrink inwardly, the right end of the outwardly expanding elastic plate 603 tightly abuts against the valve pipeline 12, the valve pipeline 12 is further fixed and supported, the threaded connection is not loose due to the weight of the valve pipeline 12 itself, and the pipeline sealing effect is improved.

[0026] After connecting the valve pipeline 12, close the valve, use the pressure pump to inject water into the main pipe 2 to pressurize, stop pressurizing after reaching the test pressure, and observe whether the pressure gauge 4 changes after the specified time ends, check whether the valve leaks, and the tightness test is complete; After the tightness test is completed, the test pressure branch pipe 5 is depressurized, the other side of the DN100 and above pipe diameter valve is closed with a blanking plate, the DN80 and below valve is closed with a threaded plug, and the valve is opened; Then use the pressure pump to inject water into the main pipe 2 to pressurize, stop pressurizing after reaching the test pressure, and observe whether the pressure gauge 4 changes after the specified time ends, check whether the valve shell and packing gland leak, and the valve strength test is complete.

[0027] The left and right sides of the bottom of the test bench 1 are respectively provided with an empty groove 10, and a support 7 is hingedly connected in the empty groove 10. The support 7 is a panel shape covering the left and right sides of the bottom of the test bench 1, and a folding clamping mechanism 9 is arranged at the hinged connection. The folding clamping mechanism 9 comprises a pull plate 901 arranged on the outer wall of the test bench 1. One side of the pull plate 901 is fixedly connected with a pull ring 902, and the other side of the pull plate 901 is fixedly connected with a connecting column 903. The connecting column 903 penetrates the wall of the test bench 1 and enters the empty groove 10. A limiting plate 905 is fixedly connected to the connecting column 903. A supporting spring 904 is also wrapped on the connecting column 903. The supporting spring 904 is supported between the limiting plate 905 and the inner wall of the test bench 1. The other side of the limiting plate 905 is fixedly connected with a clamping plate 906. The clamping plate 906 and the two clamping grooves 707 arranged on the top of the support 7 are clamped at different strokes respectively.

[0028] When the support 7 needs to be folded, the pull ring 902 is pulled, the pull plate 901 is pulled out, the supporting spring 904 is compressed, the clamping plate 906 is pulled out of the clamping groove 707, and the support 7 can be rotated. The support 7 is folded upward, and then the pull plate 901 is put back. The clamping plate 906 returns to the clamping groove 707, and the support 7 is limited.

[0029] In the embodiment, in order to further increase the use convenience of the test device, the support 7 is arranged as a telescopic support 7, which specifically comprises two outer sleeve legs 701 and two embedded legs 702, the top of the outer sleeve leg 701 is hingedly connected in the hollow groove 10, the embedded leg 702 is slidingly connected in the inner part of the outer sleeve leg 701, the outer sleeve leg 701 can slide up and down on the embedded leg 702, the bottom of the embedded leg 702 is further connected with a pulley 703, the whole test device is transferred through the pulley 703, the outer side of the upper part of the embedded leg 702 is provided with outward spring pins 8, the outer sleeve leg 701 is provided with a plurality of lifting clamping holes 704 corresponding to the spring pins 8, the lifting clamping holes 704 are clamped with the spring pins 8, thereby forming a telescopic limiting mechanism of the support 7, the telescopic support 7 can be telescoped according to the use requirement, thereby adjusting the height of the test bench 1, and the use convenience of the test device is improved. Meanwhile, the two outer sleeve legs 701 are fixedly connected with a baffle 705, the baffle 705 covers the test branch pipe when the support 7 is folded on the upper part of the test bench 1, so that the test branch pipe is prevented from being damaged by collision, and the baffle 705 is further fixedly connected with a handle 706, so that the folding storage operation of the support 7 is facilitated.

[0030] The preferred embodiments disclosed above are only used for helping to describe the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific implementation. Apparently, according to the content of the specification, many modifications and changes can be made.

Claims

1. A pressure testing device for valves in pressurized pipelines at construction sites, characterized in that, The test bench (1) and main pipe (2) are included. The main pipe (2) is fixedly connected to the top of the test bench (1). One end of the main pipe (2) is connected to a flange (3), and the other end of the main pipe (2) is connected to a pressure gauge (4). Several test pressure branch pipes (5) are also connected to the main pipe (2). An auxiliary sealing mechanism (6) is provided on the test pressure branch pipe (5). The auxiliary sealing mechanism (6) includes a connecting frame (601) fixedly connected to the test pressure branch pipe (5). A sealing threaded sleeve (602) is fixedly connected to the connecting frame (601). Several outwardly expanding spring plates (603) are fixedly connected inside the connecting frame (601). The thickness of the outwardly expanding spring plates (603) increases from left to right. A dial ring (604) is slidably connected to the outer surface of the connecting frame (601). A sliding ring (605) is slidably connected to the outer surface of the outwardly expanding spring plate (603). A dialing connecting plate (606) is fixedly connected between the sliding ring (605) and the dial ring (604). The test bench (1) has slots (10) on the left and right sides of its bottom, and a bracket (7) is hinged in the slot (10). A folding and snapping mechanism (9) is provided at the hinge. The folding and snapping mechanism (9) includes a pull plate (901) on the outer wall of the test bench (1). A pull ring (902) is fixedly connected to one side of the pull plate (901), and a connecting column (903) is fixedly connected to the other side of the pull plate (901). The connecting column (903) passes through the test bench (1). The wall is inserted into the slot (10), and the limiting plate (905) is fixedly connected to the connecting column (903). The connecting column (903) is also covered with a support spring (904). The support spring (904) is supported between the limiting plate (905) and the inner wall of the test bench (1). The other side of the limiting plate (905) is fixedly connected to a snap-fit ​​plate (906). The snap-fit ​​plate (906) and the two snap-fit ​​slots (707) opened on the top of the bracket (7) snap-fit ​​at different strokes.

2. The pressure testing device for pressure-bearing pipeline valves at construction sites according to claim 1, characterized in that, The bracket (7) is configured as a telescopic bracket (7), which includes two outer legs (701) and two inner legs (702). The top of the outer legs (701) is hinged in the slot (10), and the inner legs (702) are slidably connected to the inside of the outer legs (701). The bottom of the inner legs (702) is also connected to a pulley (703). The upper side of the inner legs (702) is provided with an outward-facing spring pin (8). The outer legs (701) are provided with several lifting and locking holes (704) on the side corresponding to the spring pin (8). The lifting and locking holes (704) are locked to the spring pin (8). A baffle (705) is also fixedly connected between the two outer legs (701). A handle (706) is fixedly connected to the baffle (705).

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