CN217384694U

CN217384694U - Quick-opening clamping device for valve flow resistance testing system

Info

Publication number: CN217384694U
Application number: CN202220697059.0U
Authority: CN
Inventors: 钟丰平; 代哲振; 李文利; 潘伟亮; 姚远
Original assignee: Zhejiang Institute of Special Equipment Science
Current assignee: Zhejiang Institute of Special Equipment Science
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-09-06
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to a technical field of pipe element assembly. The purpose provides a quick-opening clamping device for a valve flow resistance testing system, and aims to solve the technical problem that the efficiency of a valve assembling process in the prior art is low. The technical scheme is as follows: the utility model provides a quick-open clamping device for valve flow resistance test system which characterized in that: the clamping device comprises a flange plate movably sleeved on one test pipeline, a plurality of clamping jaws with one ends movably connected to the flange plate, and an adjustable pressing structure which is arranged at the other ends of the clamping jaws one by one and used for pressing the flange of the other test pipeline.

Description

Quick-opening clamping device for valve flow resistance testing system

Technical Field

The utility model relates to a technical field of pipe element assembly, in particular to valve quick-opening clamping device for valve flow resistance test system.

Background

The valve flow resistance test system is an important device for testing the flow characteristics of the valve, the water inlet flange and the water outlet flange of the valve are respectively connected to a pipeline of the test system at each time in the assembling and disassembling stages in the valve flow characteristic test process, the water inlet flange and the water outlet flange of the valve and the corresponding pipeline flange form a flange pair, the flanges are connected through bolts, and rubber pads between the flange pairs are extruded through adjusting bolts to form sealing. However, the flange pairs connected by the bolts need to spend a lot of time on fastening or detaching the bolts, which seriously affects the testing efficiency. In addition, when a valve without a flange structure is encountered, a lot of time is also needed for manufacturing the tool so as to complete the test.

Chinese utility model patent with publication number CN 201526667U discloses a quick-open flange fastening structure, and its typical structure is: one flange of the mating flange is provided with a plurality of open slots along the outer edge, and the other flange is provided with swing bolts corresponding to each open slot, and the swing bolts are arranged on two support plates connected with the flange through positioning pins; the open slot is composed of two support plates connected with the flange. The utility model discloses an adopt eye bolt, only need with several pitches of nut forward or reverse rotation, alright make two flange fastenings or remove the fastening, can realize that the flange is opened soon, convenient and fast, labour saving and time saving. However, the patent only aims at the connection between the flange pairs, and when a valve product needs to be connected, the quick opening effect cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a valve quick-opening clamping device for valve flow resistance test system, it aims at solving the technical problem that valve assembling process is inefficiency among the prior art.

In order to achieve the above purpose, the utility model provides a technical scheme is:

the utility model provides a open clamping device soon for valve flow resistance test system which characterized in that: the clamping device comprises a flange plate movably sleeved on one of the test pipelines, a plurality of clamping jaws with one ends movably connected to the flange plate, and an adjustable pressing structure which is arranged at the other ends of the clamping jaws one by one to press the flange of the other test pipeline.

The claw is U-shaped or arc-shaped in shape so as to avoid a valve to be tested in the valve flow resistance testing system.

The number of the clamping jaws is at least two, and the clamping jaws are uniformly distributed in the circumferential direction of the flange plate.

The cross section of the straight section or the circular arc section of the claw shape structure can be T-shaped, O-shaped, rectangular or H-shaped, so that the transmission of the acting force is facilitated.

The movable connection is that the fixed ends of the claws are connected to the flange plate through hinged or movable bolts so that the claws can be freely opened or grasped.

The adjustable compression structure is connected to the driven end of the clamping jaw through a thread pair.

The diameter of the inner hole of the flange plate is slightly larger than the outer diameter of a pipeline of the valve flow resistance testing system and smaller than the outer diameter of a testing pipeline flange, so that the clamping jaw can apply force to the testing pipeline flange through the flange plate during testing.

The flange plate is structurally an integral flange or a detachable flange.

The main body structure of the adjustable compaction structure is a stud connected with the clamping jaw through a thread pair.

The driving end of the stud is provided with an inscribed or externally-connected quadrangular prism and a hexagonal prism so as to be convenient for screwing the stud.

The driven end of the stud is a pressing plate with a plane, and the pressing plate is used for increasing the stress area when the pressing plate is in contact with a pipeline flange of a testing system so as to uniformly transmit the pressing force of the clamping jaws.

When the utility model is used, the valve to be tested is inserted between the two test pipeline flanges and the flange of the valve to be tested is aligned with the test pipeline flange; then moving the adjustable pressing structures on all the clamping jaws to another test pipeline flange and applying a top pressure to the flange to move towards the valve to be tested; the valve to be tested can be tightly matched with the pipeline flange of the test system.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the flange plate at one end of the device is directly sleeved on a pipe at one side of a pipeline flange of a test system, and when the device is used, the flange plate is directly under the acting force of the clamping jaw and is tightly matched with the pipeline flange of the test system, so that the fastening purpose is achieved, the time for connecting the flange with the bolt at the side is saved, and the assembly efficiency is improved.

2. When the device meets a valve without a flange structure, the valve is directly clamped between the flanges of the pipeline of the valve flow resistance testing system, a connecting tool does not need to be manufactured, and time and economic cost are saved.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram of the working state of the present invention (the state when the jaw is connected to the pipeline of the testing system).

Fig. 3 is a second schematic view of the working state of the present invention (the state when the jaw is connected to the pipeline of the testing system).

In the figure: 1. a claw; 1-1, a straight edge section of a clamping jaw; 1-2, a claw fixing end; 1-3, a jaw driven end; 2. A flange plate; 21. the clamping jaw is hinged with the base; 22. a pin shaft; 3. an adjustable compression structure; 3-1, an active end; 3-2, a driven end; 4. a left flange; 5. a right flange; 6. and (6) a valve to be tested.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

The quick-opening clamping device for the valve flow resistance testing system shown in the attached drawing comprises three parts, namely a clamping jaw 1, a flange plate 2 for movably connecting the clamping jaw 1 and an adjustable pressing structure 3 on a driven end 1-3 of the clamping jaw. The movable connection is that the fixed ends 1-2 of the claws are connected with the flange plate through hinged or movable bolts (namely, the bolts are matched with nuts, but are not screwed tightly, so that certain movable gaps are reserved). During the use, 2 suits of ring flange for fixed jack catch 1 are on the pipeline of valve flow resistance test system pipeline left flange 4, and the other end passes through adjustable compact structure 3 and valve flow resistance test system pipeline right flange 5 (the test pipeline flange includes left flange, right flange) formation of jack catch driven end are connected, and the valve 6 that awaits measuring is under the 3 impetus of adjustable compact structure on the jack catch driven end, through jack catch 1 closely cooperates it with test system pipeline flange (left flange, right flange in the current valve flow resistance test system can be a plurality of distances of axial displacement when the test to the loading and unloading of valve that awaits measuring when convenient to test).

Referring to fig. 2 and 3, the above technical solution is further described as follows:

the claw 1 is U-shaped in appearance structure, and aims to avoid a valve to be tested in a valve flow resistance testing system. The number of the claws is at least two and is evenly distributed in the circumferential direction on the left side of the flange plate 2. The cross section of the straight section 1-1 of the clamping jaw is T-shaped, so that the transmission of acting force is facilitated. The fixed ends 1-2 of the jaws are fixed on the jaw hinge seats 21 of the flange 2 by pin shafts 22, which are aimed at enabling the jaws to open or grip freely. The driven end 1-3 of the clamping jaw is provided with an adjustable pressing structure 3, and the clamping jaw is connected with the adjustable pressing structure 3 through a thread pair.

The flange plate 2 is used for fixing the clamping jaw, the diameter of an inner hole of the flange plate 2 is slightly larger than the outer diameter of a pipeline of a valve flow resistance test system, and is smaller than the outer diameter of a left flange 4 of the pipeline of the valve flow resistance test system, in this way, the flange plate 2 is sleeved on a pipe on the left side of the left flange of the pipeline of the valve flow resistance test system, so that the flange plate can move freely relative to the pipeline of the test system, and the clamping force can be effectively applied to the left flange when the test is carried out (the right flange face of the flange plate 2 is opposite to the left flange of the pipeline of the valve flow resistance test system, and the clamping jaw 1 is used for compressing a valve 6 to be tested when being tightened.

The flange plate 2 for fixing the clamping jaws is provided with clamping jaw hinge seats 21 on the flange surface at the left side, the number of the clamping jaw hinge seats is at least two, and the clamping jaw hinge seats are uniformly distributed on the flange surface at the side.

Preferably, the flange 2 for fixing the jaws is constructed as an integral flange.

The adjustable compaction structure 3 is positioned at the driven end of the clamping jaw, the main body structure of the adjustable compaction structure is a stud with a thread section 3-2, and the driving end 3-1 of the stud is connected with the clamping jaw 1 through a thread pair.

Preferably, the tail end of the driving end 3-1 of the bolt adopts a structure form convenient for screwing and is an external hexagonal prism. The driven end 3-3 end of the adjustable pressing structure is provided with a pressing plate with a plane, and the pressing plate is used for increasing the stress area when the pressing plate is in contact with a pipeline flange of a testing system so as to uniformly transmit the pressing force of the clamping jaws.

During operation, the adjustable pressing structure 3 pushes the stud to stretch under the action of external force, so that the clamping jaw 1 is tightened, and the valve 6 to be tested is fastened in the valve flow resistance testing system.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The utility model provides a quick-open clamping device for valve flow resistance test system which characterized in that: the clamping device comprises a flange plate (2) movably sleeved on one test pipeline in a penetrating mode, a plurality of clamping jaws (1) with one ends movably connected to the flange plate, and adjustable pressing structures (3) which are arranged at the other ends of the clamping jaws one by one and used for pressing the flange of the other test pipeline.

2. The quick-open clamp device for a valve flow resistance test system of claim 1, wherein: the claw is U-shaped or arc-shaped in shape so as to avoid a valve to be tested in the valve flow resistance testing system.

3. The quick-open clamp device for a valve flow resistance test system of claim 2, wherein: the number of the clamping jaws is at least two, and the clamping jaws are uniformly distributed in the circumferential direction of the flange plate.

4. The quick-open clamp device for a valve flow resistance test system of claim 3, wherein: the cross section of the straight section or the circular arc section of the claw shape structure can be T-shaped, O-shaped, rectangular or H-shaped, so that the transmission of the acting force is facilitated.

5. The quick-open clamp device for a valve flow resistance test system of claim 4, wherein: the movable connection is that the fixed ends (1-2) of the claws are connected with the flange plate through hinged or movable bolts so that the claws can be freely opened or grasped.

6. The quick-open clamp device for a valve flow resistance test system of claim 5, wherein: the adjustable compression structure is connected to the driven end (1-3) of the jaw through a thread pair.

7. The quick-open clamp device for a valve flow resistance test system of claim 6, wherein: the diameter of an inner hole of the flange plate is slightly larger than the outer diameter of a pipeline of the valve flow resistance testing system and is smaller than the outer diameter of a pipeline flange; so that the clamping jaws can apply force to the pipeline flange through the flange plate during testing.

8. The quick-open clamp for a valve flow resistance test system of claim 7, wherein: the flange plate is structurally an integral flange or a detachable flange.

9. The quick-open clamp for a valve flow resistance test system of claim 8, wherein: the main structure of the adjustable pressing structure is a stud connected with the clamping jaw through a thread pair.

10. The quick-open clamp for a valve flow resistance test system of claim 9, wherein: the driving end (3-1) of the stud is provided with a quadrangular prism and a hexagonal prism which are internally connected or externally connected so as to be convenient for screwing the stud; the driven end (3-2) of the stud is a pressing plate with a plane, and the pressing plate is used for increasing the stress area when the pressing plate is in contact with a pipeline flange of a testing system so as to uniformly transmit the pressing force of the clamping jaws.