CN219573726U - Clamp for hydrostatic pressure detection and hydrostatic pressure detection system - Google Patents

Abstract

The utility model relates to the technical field of pipe pressure measurement, in particular to a clamp for hydrostatic pressure detection and a hydrostatic pressure detection system, comprising a clamping device and a sealing element, wherein the clamping device comprises a sliding plate and a clamp for clamping a pipe, and the clamp is arranged at the lower part of the sliding plate; the seal is a removable device. The clamp for hydrostatic pressure detection is simple in structure, the pipe is sleeved in the sealing element, the sealing element is installed in the contact ring, the outer surface part of the sealing element is contacted with the first contact surface, the clamp is enabled to clamp the pipe, and the clamp is convenient and fast in the installation process due to the simple structure; meanwhile, the contact ring is in a radial horn shape and can adapt to the pipes with various pipe diameters, so that the applicability of the clamp is improved.

Description

Clamp for hydrostatic pressure detection and hydrostatic pressure detection system

Technical Field

The utility model relates to the technical field of pipe pressure measurement, in particular to a clamp for hydrostatic pressure detection and a hydrostatic pressure detection system.

Background

The pipe hydrostatic testing machine is used for measuring the pressure-resistant breaking time or the maximum pressure value of instantaneous explosion of various pipes under the conditions of long-time constant internal pressure and constant temperature, is an important experiment for inspecting the performance of plastic pipes, and is also necessary detection equipment for pipe manufacturers and detection mechanisms. The clamp for the hydrostatic test of the pipe is an important part for fixing the pipe in the whole experimental process, and a reasonable clamp not only can ensure that the whole hydrostatic test can be accurately performed, but also can simplify the whole experimental process as much as possible.

In the prior art, for example, chinese patent No. CN114235589a discloses a clamp of a pipe hydrostatic testing machine, which includes a first clamp body, a second clamp body, and a liquid inlet pipe, where the first clamp body is disposed at one end of the pipe, and the second clamp body is disposed at the other end of the pipe; the first clamp body and the second clamp body comprise a main body and a clamping and sealing assembly, a placing groove for placing a pipe is formed in the main body, and the cross section of the placing groove is larger than that of the pipe; the clamping sealing assembly is arranged on the main body and abuts against the pipe; the liquid inlet pipe is arranged on the main body of the first clamp body and is communicated with the pipe. Although the clamp can well fix the pipe in the pipe hydrostatic pressure detection process, and has higher tightness, the hydrostatic pressure detection of the pipe is ensured to be carried out accurately, but the clamp is too complex, the pipe is not convenient to be fast fixed in the detection process, the single pipe of the clamp is single-use, and the same clamp can not clamp the pipes with different pipe diameters.

Disclosure of Invention

Based on the above, the utility model provides a clamp for hydrostatic detection, which solves the problems of over-complex clamp and limited application range in the prior art.

The technical scheme adopted for solving the technical problems is as follows:

the clamp for hydrostatic detection comprises a contact ring, a clamping plate and a sealing piece, wherein the contact ring is arranged at the lower part of the inner surface of the clamping plate, the contact ring is in a radial horn shape, and a first contact surface is arranged inside the contact ring; the sealing element is used for being sleeved at the pipe end of the pipe to be detected, and at least part of the outer surface of the sealing element can be in contact with the first contact surface.

Preferably, the outer surface of the seal is provided with a second contact surface, inside which is provided a cylindrical hole, said second contact surface being parallel to the first contact surface when the seal is concentric with the contact ring.

Preferably, the seal wall thickness is 4-6mm at its thinnest.

Preferably, the seal ends are provided with an "L" shaped stop.

Preferably, the hydrostatic testing fixture further comprises a liquid inlet pipe, wherein the liquid inlet pipe is arranged at the lower part of the outer side face of the clamping plate and is coaxial with the contact ring.

Preferably, the hydrostatic test jig further includes a mounting hole provided in an upper portion of the inner side surface of the clamping plate.

Preferably, the hydrostatic test jig includes a pressure gauge provided on an outer side surface of the clamping plate.

Compared with the prior art, the utility model has at least the following advantages:

the clamp for hydrostatic pressure detection is simple in structure, the pipe is sleeved in the sealing element, the sealing element is installed in the contact ring, the outer surface part of the sealing element is contacted with the first contact surface, the clamp is enabled to clamp the pipe, and the clamp is convenient and fast in the installation process due to the simple structure; meanwhile, the contact ring is in a radial horn shape and can adapt to the pipes with various pipe diameters, so that the applicability of the clamp is improved.

Drawings

Fig. 1 is an isometric view of a hydrostatic test clamp of an embodiment.

Fig. 2 is a side view of a hydrostatic test clamp of an embodiment.

FIG. 3 is a cross-sectional view of a clamp seal for hydrostatic testing of an embodiment.

In the figure: clamping plate 1, contact ring 2, sealing member 3, mounting hole 4, feed liquor pipe 5, first contact surface 6, "L" shape dog 7, second contact surface 8, manometer 9.

Description of the embodiments

It should be noted that the embodiments of the present utility model and the features of the embodiments can be combined with each other without collision. The technical solution of the present utility model will be further described below with reference to the accompanying drawings of the embodiments of the present utility model, and the present utility model is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., that indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is merely for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

Referring to fig. 1 to 3, in one embodiment, a hydrostatic testing jig includes: the device comprises a contact ring 2, a clamping plate 1 and a sealing piece 3, wherein the contact ring 2 is in a radial horn shape, and a first contact surface 6 is arranged inside the contact ring 2; the contact ring 2 is arranged at the lower part of the inner surface of the clamping plate 1; the seal 3 is detachable and an outer surface portion of the seal 3 is in contact with the first contact surface 6.

The clamp for hydrostatic pressure detection is simple in structure, a pipe is sleeved in the sealing element 3, the sealing element 3 is installed in the contact ring 2, the outer surface part of the sealing element 3 is in contact with the first contact surface 6, the clamp can clamp the pipe, and the clamp is convenient and fast in the installation process due to the simple structure; meanwhile, the contact ring 2 is radially horn-shaped and can adapt to the pipes with various pipe diameters, so that the applicability of the clamp is improved. Preferably, the contact ring 2 is made of hard rubber.

It should be noted that, for pipes with different pipe diameters, the sealing member 3 with the same model is required to be matched, but only one contact ring 2 is required to be arranged, so that the clamping device is applicable to clamping pipes with various pipe diameters.

Preferably, the outer surface of the seal is provided with a second contact surface 8, inside which a cylindrical hole is provided, said second contact surface 8 being parallel to the first contact surface 9 when the seal 3 is coaxial with the contact ring 2.

When the sealing element 3 and the contact ring 2 are coaxial, the second contact surface 8 is parallel to the first contact surface 6, the pipe is sleeved in the sealing element 3, the sealing element 3 is arranged in the contact ring 2, and the parallel relation between the first contact surface 6 and the second contact surface 8 can change the line contact of the pipe and the contact ring 2 into the surface contact, so that the reliability of clamping the pipe is improved.

In some embodiments, the thinnest wall thickness of the sealing element 3 is set to be 4-6mm, and the wall thickness of the sealing element 3 is too thick, so that the diameter of an internal round hole is reduced, the toughness of the sealing element 3 is reduced, the difficulty in sleeving a pipe into the sealing element 3 is increased, and the applicability of the sealing element 3 is reduced; too thin wall thickness can not meet the sealing requirement, and the pipe slips off during clamping, so that the whole test can not be performed.

In some preferred embodiments, the seal ends are provided with an "L" shaped stop 7, which ensures that the pipe is installed into the seal 3 without directly penetrating the pipe, and when clamping the pipe, the seal 3 is subjected to a pressure and can react to the same amount of pressure on the pipe, improving the tightness of the seal 3. The reserved holes can realize liquid inlet and liquid outlet at the same time, so that the whole detection process can be ensured to be carried out normally; moreover, the sealing element is made of a material with better elasticity, and for the pipe with small pipe diameter difference, one sealing element can realize sealing, so that the number of parts of the device is reduced, the detection process is simplified to a certain extent, and the detachable connection mode can facilitate the replacement of sealing elements with different specifications in time when the pipe diameter difference is larger.

Preferably, the hydrostatic testing jig further comprises a liquid inlet pipe 5, wherein the liquid inlet pipe 5 is arranged at the lower part of the outer side surface of the clamping plate 1 and is coaxial with the contact ring.

The purpose of setting up feed liquor pipe 5 is when carrying out hydrostatic test to the tubular product of centre gripping, will feed liquor pipe 5 set up the lower part of grip block 1 with the coaxial center of contact ring 2, this kind of setting can directly be with liquid in tubular product, can carry out hydrostatic test fast, guarantees that the test can go on fast and accurately.

Further, the hydrostatic test jig further includes a mounting hole 4, and the mounting hole 4 is provided at an upper portion of the clamping plate 1. The mounting hole 4 is used for externally connecting a hydraulic rod and is connected with the clamping plate 1, so that the clamping plate 1 can slide under the drive of the hydraulic rod to realize the clamping function of the clamp for hydrostatic pressure detection.

The hydrostatic test jig includes a pressure gauge 9 provided on the outer side surface of the clamp plate 1. When the pipe is clamped, in order not to influence the result of the hydrostatic test of the pipe, a large axial force cannot be applied to the pipe, so that the pressure gauge 9 is arranged to observe the axial pressure born by the pipe, the phenomenon that the axial force is large and influences the result of the whole test is avoided, the test error is reduced, and the reliability of the test result is improved.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. A hydrostatic test clamp, comprising:

a clamping plate;

the contact ring is arranged at the lower part of the inner surface of the clamping plate, is in a radial horn shape, and is internally provided with a first contact surface; and

the sealing piece is used for being sleeved at the pipe end of the pipe to be detected, and at least part of the outer surface of the sealing piece can be in contact with the first contact surface.

2. The hydrostatic test fixture of claim 1, wherein said seal has an outer surface provided with a second contact surface and an interior provided with a cylindrical bore, said second contact surface being parallel to said first contact surface when said seal is concentric with said contact ring.

3. The hydrostatic test fixture of claim 2, wherein said seal has a wall thickness of 4-6mm at its thinnest point.

4. A hydrostatic test fixture as set forth in claim 3 wherein said seal ends are provided as "L" shaped stops.

5. The hydrostatic test fixture of claim 1, further comprising a feed tube disposed at a lower portion of the outer side of the clamping plate concentric with the contact ring.

6. The hydrostatic test fixture of claim 5, further comprising mounting holes provided in an upper portion of an inner side of said clamping plate.

7. The hydrostatic test fixture of claim 6, wherein said hydrostatic test fixture includes a pressure gauge disposed on an outer side of said clamping plate.

8. A hydrostatic testing system comprising a hydrostatic testing jig as claimed in any one of claims 1 to 7.