CN215767555U - Pressure test fixture for pipe fitting - Google Patents

Abstract

The utility model relates to the field of pressure testing, in particular to a pressure test clamp for a pipe fitting, which comprises a first fixing plate, a second fixing plate and guide pillars, wherein the guide pillars are respectively connected with the first fixing plate and the second fixing plate; the device also comprises a movable plate, a sealing end plate and a telescopic device; the movable plate is positioned between the first fixed plate and the second fixed plate and can be movably connected with the guide pillar along the axial direction of the guide pillar; the sealing end plate is arranged at the top of the movable plate, moves along with the movable plate and is used for bearing the tested tube; the sealing end plate is also connected with a hydrostatic testing machine and used for pressurizing the inside of the tested pipe; the telescopic device is installed on the first fixed plate, and the telescopic end abuts against the movable plate. When the clamp is used for carrying out pressure tests on a plurality of pipe fittings, the steps can be reduced, and the efficiency is improved.

Description

Pressure test fixture for pipe fitting

Technical Field

The utility model relates to the field of pressure test, in particular to a pressure test clamp for a pipe fitting.

Background

At present, engineering material detection relates to a plurality of pipeline hydraulic sealing performance tests, and particularly, stainless steel pipes, pipe fittings and ductile cast iron pipes are processed and prepared before hydraulic test and hydraulic test detection. The hydraulic sealing performance test can be performed. Each sample is individually connected to the testing apparatus during the test. Therefore, the test steps are complicated, and the test efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a pressure test clamp for a pipe fitting, which reduces the test steps and improves the efficiency when a plurality of samples are tested.

A pressure test fixture for pipe fittings comprises a first fixing plate, a second fixing plate and guide posts which are respectively connected with the first fixing plate and the second fixing plate;

the device also comprises a movable plate, a sealing end plate and a telescopic device; the movable plate is positioned between the first fixed plate and the second fixed plate and can be movably connected with the guide pillar along the axial direction of the guide pillar; the sealing end plate is arranged at the top of the movable plate, moves along with the movable plate and is used for bearing the tested tube; the sealing end plate is also connected with a hydrostatic testing machine and used for pressurizing the inside of the tested pipe; the telescopic device is installed on the first fixed plate, and the telescopic end abuts against the movable plate.

Further, a main frame is installed at the bottom of the first fixing plate and connected with the second fixing plate through a support rod.

Furthermore, the support device comprises four support rods, wherein the four support rods are obliquely arranged.

Furthermore, the movable plate comprises four guide posts, and the four guide posts are respectively positioned on four corners of the movable plate.

Furthermore, the telescopic device is a hydraulic jack.

Furthermore, a sealing gasket is arranged on the second fixing plate and used for sealing the tested tube.

Furthermore, the tested tube is a straight tube.

Further, the sealing end plate comprises a plate body for sealing the tested tube piece and a connecting part for connecting with the hydrostatic testing machine; the last inhalant canal who runs through plate body and connecting portion of offering of sealed end plate for to being pressurized by test tube spare in.

Furthermore, an annular limiting groove is formed in one side, close to the tested tube, of the plate body.

Furthermore, the second fixed plate is connected with the movable plate through a screw; nuts are respectively arranged at two ends of the screw rod.

According to the pressure test fixture for the pipe fitting, the tested pipe fitting is sealed and fixed through the sealing end plate and the second fixing plate, the hydrostatic testing machine is connected with the sealing end plate, and the hydrostatic testing machine pressurizes the tested pipe fitting through the sealing end plate, so that the pipe fitting is subjected to pressure test. When experimenting a plurality of by test tube spare, only need to remove through telescoping device drive fly leaf and can change by test tube spare or sealed by test tube spare, reduced experimental step, improved experimental efficiency.

Drawings

FIG. 1 is an overall schematic view of a clamp;

FIG. 2 is a schematic front view of the clamp;

FIG. 3 is a schematic top view of the seal end plate and the movable plate;

fig. 4 is a cross-sectional view taken along a-a of fig. 3.

Reference numerals: 1. a first fixing plate; 2. a second fixing plate; 3. a guide post; 4. a main frame; 5. a support bar; 6. a movable plate; 7. sealing the end plate; 8. a hydraulic jack; 9. a screw; 61. a plate body; 62. a connecting portion; 63. a water inlet channel; 64. a limiting groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a pressure test fixture of pipe fitting, in this embodiment, is the straight tube form by test tube spare, and this anchor clamps include first fixed plate 1, second fixed plate 2, and connect first fixed plate 1 and second fixed plate 2's guide pillar 3 respectively. Be provided with the body frame 4 of two parallels in the bottom of first fixed plate 1, the one end of guide pillar 3 stretches into in the body frame 4 after passing first fixed plate 1 to lock through bolt and body frame 4, thereby connect first fixed plate 1 and body frame 4. The other end of the guide post 3 passes through the second fixing plate 2 and is locked with the second fixing plate 2 through a bolt. The both ends of every body frame 4 are connected with two spinal branch vaulting poles 5 respectively, and two spinal branch vaulting poles 5 adopt the slope to arrange, and the one end and the body frame 4 welding of every spinal branch vaulting pole 5, the other end and the 2 welding of second fixed plate to keep the holistic stability of anchor clamps, and keep first fixed plate 1 and 2 rigidity of second fixed plate.

Specifically, the clamp further comprises a movable plate 6, a sealing end plate 7 and a telescopic device. The four corners of the movable plate 6 are respectively provided with through holes, and each through hole is respectively sleeved on the guide pillar 3, so that the movable plate 6 can move along the axial direction of the guide pillar 3. The sealing end plate 7 is mounted on top of the movable plate 6 and moves along with the movement of the movable plate 6. The telescopic device is installed on the first fixed plate 1, the telescopic end of the telescopic device is abutted against the movable plate 6, and the movable plate 6 is driven to move through the telescopic device. When needs were carried out the centre gripping by test tube spare, will be placed on sealed end plate 7 by test tube spare, the sealed end plate 7 rebound of telescoping device drive for the both ends of being tested the tube spare are respectively by second fixed plate 2 and sealed end plate 7 centre gripping, exert certain effort once more through the telescoping device, make the both ends of being tested the tube spare sealed. In the test, a hydrostatic testing machine is connected to the sealing end plate 7, and the hydrostatic testing machine pressurizes the inside of the test tube through the sealing end plate 7, thereby completing the pressure test.

Specifically, the sealing end plate 7 comprises a plate body 61 for sealing the tested tube piece and a connecting part 62 for connecting with a hydrostatic testing machine; the connecting part 62 protrudes towards one side of the sealing end plate 7, which is far away from the tested tube piece, penetrates through the movable plate 6 and extends out of the movable plate 6; the movable plate 6 and the sealing end plate 7 can be integrally formed or fixedly connected; the hydraulic jack 8 may be directly against the connecting portion 62. And a water inlet channel 63 penetrating through the plate body 61 and the connecting part 62 is formed in the sealing end plate 7, is connected with a hydrostatic testing machine through the water inlet channel 63, and is pressurized inside the tested tube.

As a further improvement of this embodiment, an annular limiting groove 64 corresponding to the shape of the tube to be tested is disposed on one side of the plate body 61 close to the tube to be tested, so as to limit the displacement of the tube to be tested. When testing test tubes of different diameters, the sealing end plate 7 of different specifications can be replaced.

As a further improvement of the present embodiment, the second fixed plate 2 is connected with the movable plate 6 through a screw 9; the both ends of screw rod 9 are provided with the nut respectively, through nut locking second fixed plate 2 and fly leaf 6 to set for the same power value with the torque wrench, screw up the nut at both ends, further guarantee to sealed by test tube spare.

When using above-mentioned anchor clamps to a plurality of tested tube spare tests, need not lap the connection status of the hydrostatic testing machine of apron, only need to move through telescoping device drive fly leaf 6 and can change tested tube spare and sealed tested tube spare, reduced required step in the testing process, improved test efficiency.

Specifically, the telescopic device is a 20t manual hydraulic jack 8, and the force required by the jack to support the tested pipe and the mass of water in the tested pipe in the test process is lower than the force required by maintaining the hydraulic pressure in the pipe by about 3 orders of magnitude, so that the force required by the jack is as follows:

wherein F is the pressure required to be provided by the jack and has the unit of ton (t); p is the hydraulic performance test pressure in megapascals (MPa); the range of the hydraulic performance test pressure is 0.5MPa-10 MPa.

In this embodiment, in order to improve the sealing effect to the pipe fitting, be provided with seal ring on sealed end plate 7 and second fixed plate 2 respectively, include: DN25-80 seal gasket or DN100-250 seal gasket.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A pressure test fixture for pipe fittings comprises a first fixing plate (1), a second fixing plate (2) and guide posts (3) which are respectively connected with the first fixing plate (1) and the second fixing plate (2); the method is characterized in that:

the device also comprises a movable plate (6), a sealing end plate (7) and a telescopic device; the movable plate (6) is positioned between the first fixed plate (1) and the second fixed plate (2) and can be movably connected with the guide post (3) along the axial direction of the guide post (3); the sealing end plate (7) is mounted at the top of the movable plate (6), moves along with the movable plate (6) and is used for bearing tested tube pieces; the sealing end plate (7) is also connected with a hydrostatic testing machine and is used for pressurizing the inside of the tested pipe; the telescopic device is arranged on the first fixed plate (1), and the telescopic end is abutted against the movable plate (6).

2. The pressure test fixture of a pipe fitting of claim 1, wherein: a main frame (4) is installed at the bottom of the first fixing plate (1), and the main frame (4) is connected with the second fixing plate (2) through a support rod (5).

3. A pipe pressure test fixture as claimed in claim 2, wherein: comprises four supporting rods (5), wherein the four supporting rods (5) are respectively arranged in an inclined way.

4. The pressure test fixture of a pipe fitting of claim 1, wherein: the four-guide-post mechanism comprises four guide posts (3), wherein the four guide posts (3) are respectively positioned on four corners of a movable plate (6).

5. The pressure test fixture of a pipe fitting of claim 1, wherein: the telescopic device is a hydraulic jack (8).

6. The pressure test fixture of a pipe fitting of claim 1, wherein: and a sealing gasket is arranged on the second fixing plate (2) and used for sealing the tested tube.

7. The pressure test fixture of a pipe fitting of claim 1, wherein: the tested tube is a straight tube.

8. The pressure test fixture for pipe fittings according to any one of claims 1 to 7, wherein: the sealing end plate (7) comprises a plate body (61) used for sealing the tested pipe fitting and a connecting part (62) used for being connected with a hydrostatic testing machine; the sealed end plate (7) is provided with a water inlet channel (63) penetrating through the plate body (61) and the connecting part (62) and used for pressurizing the inside of the tested tube.

9. The pressure test fixture of a pipe fitting of claim 8, wherein: one side of the plate body (61) close to the tested pipe fitting is provided with an annular limiting groove (64).

10. The pressure test fixture for pipe fittings according to any one of claims 1 to 7, wherein: the second fixed plate (2) is connected with the movable plate (6) through a screw (9); nuts are respectively arranged at the two ends of the screw rod (9).

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