High-temperature and high-pressure valve pressure testing tool

Abstract

The utility model discloses a high temperature high pressure valve pressure test tool, including valve assembly, sealing pressure plate, compression flange and opening and closing fixed plate, the bottom of valve assembly left and right sides is symmetrically provided with the sealing interface, the sealing interface is equipped with the sealing pressure plate, the outside of the sealing pressure plate is equipped with the compression flange, the opening and closing fixed plate is equipped with the opening and closing fixed plate, and the opening and closing fixed plate is equipped with the opening and closing fixed plate. The pressing flange is connected with the opening and closing fixing plate through the first bolt and the first nut, and the opening and closing fixing plate is fixedly connected to the outer portion of the valve assembly. The pressure testing device can be used for testing pressure by using a small-sized flow pressure testing machine, meets the test of a large-diameter high-pressure valve, can meet the test requirements of the high-pressure valve, is simple in process, does not need complex processes such as repeated processing and repeated heat treatment, and is simple in structure, high in use efficiency, wide in use range, long in service life, low in manufacturing cost and high in practicability.

Description

Technical Field

[0001] The utility model relates to a pressure testing tool, in particular to a high-temperature and high-pressure valve pressure testing tool. Background Art

[0002] At present, pressure testing machines cannot meet the test requirements of high pressure and large diameter valves. To meet the test requirements of high pressure and large diameter valves, a special testing machine is needed, which is very expensive. There is also a process method of using welding blanking plates for pressure testing, which can be completed with small high pressure pressure testing equipment. It can solve the pressure testing requirements of large diameter valves, but it requires repeated heat treatment, repeated processing and other complex processes, and the test results are uncertain. For this reason, we propose a high temperature and high pressure valve pressure testing tool. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-temperature and high-pressure valve pressure testing tool, which solves the problem that the existing pressure testing machine cannot meet the test requirements of high pressure and large diameter valves; to meet the test requirements of high pressure and large diameter valves, a special testing machine is needed, and the cost is very high; there is also a process method of using a welded plate to perform pressure testing, which can be completed with a small high-pressure pressure testing equipment, and can solve the process large-diameter pressure testing requirements, but it requires repeated heat treatment, repeated processing and other complex processes, and the test effect has the problem of uncertainty.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-temperature and high-pressure valve pressure testing tool, comprising a valve assembly, a sealing pressure plate, a clamping flange and an opening and closing fixing plate, wherein sealing interfaces are symmetrically arranged at the bottom of the left and right sides of the valve assembly, a sealing pressure plate is installed in the sealing interface, a clamping flange is installed on the outside of the sealing pressure plate, the clamping flange is connected to the opening and closing fixing plate by bolt 1 and nut 1, and the opening and closing fixing plate is fixedly connected to the outside of the valve assembly.

[0005] Based on the above solution, an O-ring is installed between the sealing pressure plate and the sealing interface, and the O-ring is made of rubber material.

[0006] Based on the above solution, the opening and closing fixing plate is composed of two half rings, and the upper and lower ends of the two half rings are fixedly connected by bolt two and nut two respectively.

[0007] Based on the above solution, the clamping flange presses the sealing pressure plate at the sealing interface.

[0008] Based on the above solution, the joint between the sealing pressure plate and the valve assembly is provided with mutually matching grooves and tapered protrusions.

[0009] Compared with the prior art, the utility model has the following beneficial effects: a high-temperature and high-pressure valve pressure test tool adopts a new structure, can be tested with a small flow pressure test machine, meets the test of large-caliber high-pressure valves, can meet the test requirements of high-pressure valves, has a simple process, does not require repeated processing, repeated heat treatment and other complex processes, and has the following advantages:

[0010] 1. Process a tapered protrusion at the sealing interface of the valve assembly and match it with a special sealing pressure plate to achieve seamless fit.

[0011] 2. According to the required pressure and diameter of the valve, configure a sealing pressure plate of suitable size and thickness to meet the requirements of the pressure test.

[0012] 3. Use high-pressure bolts and nuts to connect the opening and closing fixing plates, and press the sealing pressure plate tightly against the sealing interface of the valve assembly through the compression flange to ensure the pressure test requirements.

[0013] 4. All tools can be used repeatedly under the same pressure and caliber.

[0014] The utility model has the advantages of simple structure, high use efficiency, wide use range, long service life, low manufacturing cost and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a high-temperature and high-pressure valve pressure testing tool of the utility model;

[0016] Figure 2 for Figure 1 A is an enlarged schematic diagram of the local structure;

[0017] Figure 3 The utility model is a top view of an opening and closing fixing plate of a high-temperature and high-pressure valve pressure testing tool.

[0018] The numbers in the figure are: 1-valve assembly, 2-sealing pressure plate, 3-O-ring, 4-clamping flange, 5-opening and closing fixing plate, 6-bolt one, 7-nut one, 8-bolt two, 9-nut two. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] Reference Figures 1 to 3 It can be seen that: a high-temperature and high-pressure valve pressure testing tool includes a valve assembly 1, a sealing pressure plate 2, a clamping flange 4 and an opening and closing fixing plate 5, the valve assembly 1 is symmetrically provided with sealing interfaces at the bottom of the left and right sides, the sealing pressure plate 2 is installed in the sealing interface, the clamping flange 4 is installed on the outside of the sealing pressure plate 2, the clamping flange 4 is connected to the opening and closing fixing plate 5 by bolts 6 and nuts 7, and the opening and closing fixing plate 5 is fixedly connected to the outside of the valve assembly 1.

[0022] An O-ring 3 is installed between the sealing pressure plate 2 and the sealing interface, and the O-ring 3 is made of rubber material. The sealing ring made of rubber material has good sealing performance and is easy to install the component; the opening and closing fixing plate 5 is composed of two semi-rings, and the upper and lower ends of the two semi-rings are fixedly connected by bolts 8 and nuts 9 respectively. This design is convenient for disassembly and installation; the clamping flange 4 presses the sealing pressure plate 2 at the sealing interface; the sealing pressure plate 2 and the valve assembly 1 are connected at the joint with each other. The design allows seamless matching between the accessories with good tightness.

[0023] The principles and advantages of the utility model: a high-temperature and high-pressure valve pressure testing tool adopts a new structure, and a tapered protrusion is processed at the sealing interface of the valve component 1 to match it with a special sealing pressure plate 2 for seamless matching. According to the pressure and caliber required by the valve, a sealing pressure plate 2 of suitable size and thickness is configured to meet the requirements of the pressure test. The opening and closing fixing plate 5 is connected with a high-pressure bolt 2 and a nut 2 9, and the sealing pressure plate 2 is tightly pressed on the sealing interface of the valve component 1 through a clamping flange 4 to ensure the pressure test requirements. All tools can be repeatedly used under the same pressure and the same caliber, and can be pressure tested with a small flow pressure testing machine to meet the test of large-caliber high-pressure valves and the test requirements of high-pressure valves. The process is simple and does not require repeated processing, repeated heat treatment and other complex processes. The utility model has a simple structure, high efficiency, a wide range of use, a long service life, and a low manufacturing cost, and is suitable for popularization and use.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature and high-pressure valve pressure test tool, comprising a valve assembly (1), a sealing pressure plate (2), a clamping flange (4) and an opening and closing fixing plate (5), characterized in that: The valve assembly (1) is symmetrically provided with sealing interfaces at the bottom of the left and right sides, a sealing pressure plate (2) is installed in the sealing interface, a clamping flange (4) is installed on the outside of the sealing pressure plate (2), the clamping flange (4) is connected to the opening and closing fixing plate (5) through bolts (6) and nuts (7), and the opening and closing fixing plate (5) is fixedly connected to the outside of the valve assembly (1).

2. A high temperature and high pressure valve pressure testing tool according to claim 1, characterized in that: An O-type sealing ring (3) is installed between the sealing pressure plate (2) and the sealing interface, and the O-type sealing ring (3) is made of rubber material.

3. A high temperature and high pressure valve pressure testing tool according to claim 1, characterized in that: The opening and closing fixing plate (5) is composed of two half rings, and the upper and lower ends of the two half rings are fixedly connected by two bolts (8) and two nuts (9) respectively.

4. A high temperature and high pressure valve pressure testing tool according to claim 1, characterized in that: The clamping flange (4) clamps the sealing pressure plate (2) at the sealing interface.

5. A high temperature and high pressure valve pressure testing tool according to claim 1, characterized in that: The joint between the sealing pressure plate (2) and the valve assembly (1) is provided with a mutually matching groove and a tapered protrusion.

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