Ball valve testing device

A test device and technology of ball valves, which are applied in the direction of measuring the rate of increase and deceleration of fluids, liquid tightness measurement by using liquid/vacuum degree, etc., can solve problems such as troublesome installation of ball valves, complicated operation process, and uneven end faces of ball valves, etc., to achieve Improve the sealing effect, strengthen the sealing effect, and the overall structure is reasonable

Inactive Publication Date: 2015-12-30
宁波宇华实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned test method has the following disadvantages: 1. The operation process is complicated, and the weight of the frame is relatively heavy. It is necessary to immerse the frame in water with the help of external equipment, and the installation of the ball valve is also relatively troublesome; 2. The ball valve is sealed by pressing down the plate with a jack And when the sealing ring is placed outside the two ends of the ball valve and clamped on both ends of the ball valve by a hydraulic cylinder for sealing, th

Method used

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Embodiment 1

[0039] Embodiment 1: as Figure 1 to Figure 4 In the shown embodiment, a ball valve test device includes an air supply pump, an air pressure sensor 14, a main frame 1, two push plate cylinders 2, two side frames 3 with opposite inner surfaces, a main end cover 4, and a secondary end Cover 5, the main end cover and the auxiliary end cover are parallel to each other, the main frame is provided with a ball valve support frame 6 for supporting the ball valve to be tested, and two push plate cylinders are respectively arranged on the two side frames, The piston rod of one of the push plate cylinders is connected to the main end cover, and the piston rod of the other push plate cylinder is connected to the auxiliary end cover. The main elastic sealing ring pad 7 at the pipe end, the surface of the auxiliary end cover close to the ball valve support frame is provided with an auxiliary elastic sealing ring plate 8 for contacting the pipe end of the ball valve to be tested, and the mai...

Embodiment 2

[0042] Embodiment 2: as Figure 5 to Figure 7 In the shown embodiment, a ball valve test device includes an air supply pump 13, an air pressure sensor, a main frame, two push plate cylinders, two side frames with opposite inner surfaces, a main end cover, and a secondary end cover. The main end cover and the auxiliary end cover are parallel to each other. The main frame is provided with a ball valve support frame for supporting the ball valve to be tested. Two push plate cylinders are respectively arranged on the two side frames. One of the push plate cylinders is The piston rod is connected to the main end cover, and the piston rod of the other push plate cylinder is connected to the auxiliary end cover. The surface of the main end cover near the ball valve support frame is provided with a main elastic sealing ring for contacting the pipe end of the ball valve to be tested. Pad 7, the surface of the auxiliary end cover close to the ball valve support frame is provided with an...

Embodiment 3

[0050] Embodiment 3: the basic structure and implementation mode of this embodiment are the same as embodiment 2, and its difference is, as Figure 8 to Figure 11 As shown in: It also includes two anti-retraction cylinders 31, one of which is fixed on the main end cover through an anti-retraction bracket 32, and the other anti-retraction cylinder is fixed on the secondary end cover through an anti-retraction bracket , the anti-retraction cylinder is provided with a push plate piston 33 that can slide up and down in the anti-retraction cylinder, the described push plate piston is connected with the inner end of a disc piston rod 34, and the outer end of the disc piston rod is provided with There is a suction cup 35, and the described connecting disk piston rod is vertical, and the described pushing disk piston divides the anti-retraction cylinder where it is located into an air chamber 36 and an active chamber 37, and the described inflatable chamber is connected with an anti-re...

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PUM

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Abstract

The invention discloses a ball valve testing device. The ball valve testing device is convenient to operate, the accuracy of a testing result is high, and it can be guaranteed that two pipe ends of a ball valve are not likely to be damaged under clamping. The ball valve device comprises an air supply pump, an air pressure sensor, a main rack, two pushing plate air cylinders, two lateral racks, a main end cover and an auxiliary end cover. The two pushing plate air cylinders are arranged on the two lateral racks respectively, a piston rod of one pushing plate air cylinder is connected with the main end cover, and a piston rod of the other pushing plate air cylinder is connected with the auxiliary end cover. A main elastic seal ring gasket is arranged on the main end cover, an auxiliary elastic seal ring plate is arranged on the auxiliary end cover, and a main cover air hole is formed in the main end cover. The ball valve testing device has the advantages that the ball valve is positioned and clamped in place, seal performance can be guaranteed, and the ball valve will not be damaged under claming; a self-adaptation adjusting seal structure is arranged, so that the sealing effect is improved in high-air-pressure detection; an auxiliary positioning structure is arranged, in this way, end cover retreat can be avoided, the pushing plate air cylinders can be protected, the sealing effect can be improved, and stability in detection can be maintained.

Description

technical field [0001] The invention belongs to the technical field of ball valve air tightness testing, and in particular relates to a ball valve testing device. Background technique [0002] Ball valves are commonly used opening and closing parts for gas or liquid circulation. They are used in different occasions and have different sealing requirements. Therefore, they need to be tested for sealing before leaving the factory, otherwise there will be greater safety hazards. [0003] In the prior art, when testing a ball valve, a gasket or a sealing ring is usually placed on the outside of both ends of the ball valve, and at the same time, a force-applying device such as a jack or a hydraulic cylinder is used to clamp the two ends of the ball valve, so that the gasket or sealing ring and the ball valve are two The end is sealed, and the whole sealed ball valve is immersed in water, and then compressed gas is passed into the ball valve to test its sealing performance. [000...

Claims

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Application Information

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IPC IPC(8): G01M3/28
Inventor 孙兆儿
Owner 宁波宇华实业股份有限公司
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