CN217586710U

CN217586710U - Blind plate for valve pressure test

Info

Publication number: CN217586710U
Application number: CN202221015055.6U
Authority: CN
Inventors: 彭秀成; 王锐; 李中华
Original assignee: Youlixima Marine Equipment Chengdu Co ltd
Current assignee: Youlixima Marine Equipment Chengdu Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-14
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to a valve pressure test is with blind plate, include the ring flange and insert a section of thick bamboo, it is in to insert a section of thick bamboo setting one side of ring flange, the ring flange with insert a through-hole that the middle part was provided with the intercommunication, insert a section of thick bamboo with the root is connected to the ring flange is provided with the annular, set up O type sealing washer in the annular. The utility model utilizes the ring groove arranged at the root of the inserting cylinder to install the O-shaped sealing ring, and is matched with the flange plate to prevent the O-shaped sealing ring from being extruded into the gap and damaged, and the taking is convenient and fast; because the sealing position is at the runner port of the valve, the pressure can cover the whole inner cavity of the valve when the pressure shell is tested, and the test precision is higher.

Description

Blind plate for valve pressure test

Technical Field

The utility model relates to the technical field of valves, especially, relate to a blind plate is used in valve pressure test.

Background

The pressure testing device of the valve is a commonly used device for testing the valve, and the pressure testing device mainly has the functions of testing the sealing performance and the bearing capacity of the valve and detecting whether the valve meets the standard or not. Each valve is subjected to pressure test before leaving the factory, and can be used by a user after the pressure test is qualified. The pressure test schematic diagram of a common small-caliber (less than or equal to DN 100) low-pressure valve is shown in figure 1. When a pressure test is performed on a valve, a sealing adapter plate and a blind plate are usually arranged between an end flange of the valve and a pressure testing machine, and according to different forms of the end flange of the valve, the commonly used pressure testing blind plates are divided into a flange type blind plate and a flow channel type blind plate (a sealing schematic diagram of the valve pressure testing blind plate is shown in fig. 2, and a rubber O-ring which is usually embedded in a metal plate groove and used for sealing is provided (the flange type blind plate is limited by the flange type valve and has poor applicability).

SUMMERY OF THE UTILITY MODEL

Therefore, the blind plate for the valve pressure test is needed to solve the problems that the existing valve blind plate is inconvenient to take and the O-shaped sealing ring is easy to damage during testing, and the like.

The utility model provides a valve pressure test is with blind plate, includes the ring flange and inserts a section of thick bamboo, it sets up to insert a section of thick bamboo one side of ring flange, the ring flange with insert a through-hole that the middle part was provided with the intercommunication, insert a section of thick bamboo with the root is connected to the ring flange is provided with the annular, set up O type sealing washer in the annular.

Preferably, the outer diameter of the insert cylinder is gradually reduced from one end connected with the flange plate to the other end.

Preferably, the flange plate and the outer edge of the end face of the end connected with the inserting cylinder are provided with step parts, and rubber sheets are adhered to the step parts.

Preferably, a plurality of convex rings are arranged on the surface of the rubber sheet at intervals.

Preferably, the number of the convex rings is three.

The utility model discloses an useful part lies in: the annular groove arranged at the root of the insert cylinder is used for installing an O-shaped sealing ring and matched with a flange plate, so that the O-shaped sealing ring is prevented from being extruded into a gap and damaged, and the O-shaped sealing ring is convenient and quick to take; because the sealing position is at the runner port of the valve, the pressure can cover the whole inner cavity of the valve when the pressure shell is tested, and the test precision is higher.

Drawings

FIG. 1 is a schematic diagram of a pressure test of a conventional low pressure valve;

FIG. 2 is a schematic diagram of a conventional flange-type blind plate and a flow channel-type blind plate test;

FIG. 3 is a partial enlarged view of a conventional flow channel type blind plate test;

FIG. 4 is a schematic diagram illustrating a structure of a blind plate and a valve for testing a valve pressure according to an embodiment;

FIG. 5 is a schematic diagram of a blind plate and a valve structure for testing a valve pressure according to another embodiment;

fig. 6 is a perspective view of a rubber sheet.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in 4~5, a blind plate for valve pressure test comprises a flange plate 1 and an inserting cylinder 2, the inserting cylinder 2 is arranged on one side of the flange plate 1, the middle parts of the flange plate 1 and the inserting cylinder 2 are provided with through holes 3 for communication, the inserting cylinder 2 is connected with the flange plate 1, the root of the inserting cylinder is provided with an annular groove 21, and an O-shaped sealing ring 4 is arranged in the annular groove 21. Specifically, in this embodiment, during the use, place the blind plate between press 100 and valve 200, insert a section of thick bamboo 2 and insert in the port of valve 200, ring flange 1 and the butt of valve 200 port, because ring flange 1 all is made with the valve 200 for the metal, and ring flange 1 and valve 200 are plane mutual contact, the clearance is little, so set up and can not crowd the clearance or extrude inserting the O type sealing washer 4 of 2 roots of a section of thick bamboo, it is sealed reliable, avoid O type sealing washer to damage, and O type sealing washer 4 is located the valve 200 port, after the test is accomplished, the blind plate is got and is taken very conveniently. Because the sealed position is at the runner mouth, fluid medium flows out in the through-hole 3, and pressure can cover valve 200 whole inner chamber, and the test is complete higher, ensures the precision of test.

As shown in fig. 4~5, the outer diameter of the insert cylinder 2 gradually decreases from the end connected with the flange 1 to the other end, and the diameter of the through hole 3 is small, so that in order to perform a strength pressure test on the port part of the valve 200 housing, the outer wall of the insert cylinder 2 is attached to the inner wall of the port of the valve 200 to match the large-diameter flow channel part of the reduced port of the valve, so that the port of the valve 200 is fully covered, the whole inner cavity of the valve 200 is covered during the pressure housing test, and the test precision standard is higher.

As shown in fig. 4~5, the flange 1 and the plug tube 2 are connected to each other at an end face outer edge thereof with a step portion, a rubber sheet 11 is adhered to the step portion, and after the flange 1 contacts the valve 200, the rubber sheet 11 is compressed to improve the air tightness between the flange 1 and the valve 200.

As shown in fig. 6, a plurality of convex rings 111 are arranged on the surface of the rubber sheet 11 at intervals, and the number of the convex rings 111 is three. During testing, the convex ring 111 is compressed when contacting with the port of the valve 200 until the end face of the inner ring of the flange plate 1 contacts with the valve 200, and the airtightness between the flange plate 1 and the valve 200 is further realized.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a blind plate is used in valve pressure test which characterized in that: including the ring flange with insert a section of thick bamboo, it sets up to insert a section of thick bamboo one side of ring flange, the ring flange with insert a through-hole that a middle part was provided with the intercommunication, insert a section of thick bamboo with the root is connected to the ring flange is provided with the annular, set up O type sealing washer in the annular.

2. The blind for testing valve pressure according to claim 1, wherein: the outer diameter of the insertion cylinder is gradually reduced from one end connected with the flange plate to the other end.

3. The blind for testing valve pressure according to claim 1, wherein: and a step part is arranged on the outer edge of the end face of one end, connected with the inserting cylinder, of the flange plate, and a rubber sheet is adhered to the step part.

4. The blind for testing valve pressure according to claim 3, wherein: a plurality of convex rings are arranged on the surface of the rubber sheet at intervals.

5. The blind for testing valve pressure according to claim 4, wherein: the number of the convex rings is three.