Ultrahigh pressure valve testing device

Abstract

The utility model discloses an ultrahigh pressure valve testing device which comprises a supporting frame set, a pressing mechanism, an air inlet base and a safety check block mechanism. The supporting frame set comprises an upper steel plate, a lower steel plate and a plurality of stand columns, the downward pressing mechanism comprises a downward pressing air cylinder and a pressing head, and the downward pressing air cylinder is located above the top of the pressing head and connected to the pressing head through a connecting piece. The air inlet base comprises a loop and a piston, and the piston is located in the loop and communicated with the valve inlet. The safety check block mechanism comprises a check block air cylinder and a safety check block, the safety check block is driven by the check block air cylinder to move in the horizontal direction, and a gap between the upper steel plate and the downward pressing mechanism is filled with the safety check block. According to the invention, space limiting is utilized, so that a small cylinder can realize ultrahigh pressure testing.

Description

Technical Field

[0001] This application relates to the technical field of mechanical hydraulic valve testing, and particularly to an ultra-high pressure valve testing device. Background Art

[0002] As a fluid switch, a valve can be used to control the flow of various types of fluids such as air, water, and steam. After the valve is processed, in order to prevent deviations during assembly by workers or defects in the spare parts themselves, there is a possibility of leakage. Therefore, before leaving the factory, the valve needs to pass a leak detection test.

[0003] The conventional method for valve leak detection is to seal both ends of the valve with end caps. A high-pressure gas source is connected to one of the end caps, and high-pressure gas is introduced into the valve through the high-pressure gas source. Then, the valve is placed in water and left still to observe whether there are bubbles emerging from the valve in the water to determine whether the valve has a leak. However, there is currently a lack of an efficient testing device on the market that integrates valve fixing, air intake, and testing. Therefore, the testing efficiency is relatively low. In addition, the existing valve testing device lacks the necessary fixing structure to ensure test safety, and it is difficult to ensure the fixing of the valve when receiving ultra-high pressure at the air intake end of the valve. Summary of the Invention

[0004] The purpose of this application is to provide an ultra-high pressure valve testing device to achieve the integration and integration of ultra-high pressure valve testing, while ensuring the safety and reliability of the testing.

[0005] This application discloses an ultra-high pressure valve testing device, including: a support frame group (100), a downward pressing mechanism (200), an air intake base (300), and a safety stop mechanism (400); where

[0006] The support frame group (100) includes an upper steel plate (111), a lower steel plate (112) arranged at intervals, and multiple columns;

[0007] The downward pressing mechanism (200) includes a downward pressing cylinder (201) and a pressing head (202). The downward pressing cylinder (201) is located above the top of the pressing head (202) and is connected to the pressing head (202) through a connecting member;

[0008] The air intake base (300) includes a loose sleeve (301) and a piston (302). The piston (302) is located in the loose sleeve (301) and is in communication with the valve inlet;

[0009] The safety stop mechanism (400) includes a stop cylinder (401) and a safety stop (402). The safety stop (402) moves horizontally under the drive of the stop cylinder (401) and fills the gap that appears between the upper steel plate (111) and the downward pressing mechanism (200).

[0010] In a preferred example, the connecting member between the downward pressing cylinder (201) and the pressing head (202) is in an inverted Y shape and has a shoulder.

[0011] In a preferred example, an O-ring seal is provided on the contact surface between the piston (302) and the valve.

[0012] In a preferred example, an O-ring seal is provided on the contact surface between the pressing head (202) and the valve.

[0013] In a preferred example, a branch is connected to the side of the pressing head (202), and the branch is connected to the air outlet pipe through a ball valve.

[0014] In a preferred example, the air inlet base (300) is externally connected to a gas source.

[0015] In a preferred example, when the downward pressing mechanism (200) presses down, the safety stop block (402) is inserted onto the shoulder of the connecting member of the downward pressing mechanism (200).

[0016] In a preferred example, the pressure test range of the ultra-high pressure valve test device is 0 MPa ≤ p ≤ 40 MPa.

[0017] This application has at least the following technical effects:

[0018] 1. By using spatial limitation, a small cylinder can also achieve ultra-high pressure testing.

[0019] 2. The air inlet base is a pressure self-locking mechanism achieved by using pressure difference, and the valve is clamped more and more firmly during the pressurization process.

[0020] 3. By replacing the pressing head and the base with different lengths, valves with different lengths can be applied.

[0021] 4. By replacing the pressing head and the base with different diameters, valves with different calibers can be applied.

[0022] A large number of technical features are described in the specification of this application, distributed in various technical solutions. If all possible combinations of technical features (i.e., technical solutions) of this application were to be listed, the specification would become overly lengthy. To avoid this problem, each of the technical features disclosed in the above-mentioned invention content of this application, each of the technical features disclosed in the following embodiments and examples, and each of the technical features disclosed in the drawings can be freely combined with each other to form various new technical solutions (all of these technical solutions should be regarded as having been described in this specification), unless such a combination of technical features is technically infeasible. For example, in one example, features A + B + C are disclosed, and in another example, features A + B + D + E are disclosed. Features C and D are equivalent technical means that perform the same function, and only one of them can be used technically and it is impossible to use both simultaneously. Feature E can be combined with feature C technically. Then, the solution A + B + C + D should not be regarded as having been described because it is technically infeasible, while the solution A + B + C + E should be regarded as having been described. Description of the Drawings

[0023] Figure 1A 、 Figure 1B are respectively the front view and the left partial sectional view of the ultra-high pressure valve testing device according to this application;

[0024] Figure 2 is the partial enlarged view of the pressure head of the downward pressing mechanism of the ultra-high pressure valve testing device according to this application;

[0025] Figure 3 、 4 are the partial enlarged front view and the partial enlarged right view of the air inlet base of the ultra-high pressure valve testing device according to this application;

[0026] Figure 5 、 6 are the partial enlarged front view and the partial enlarged right view of the safety stop of the ultra-high pressure valve testing device according to this application.

[0027] Description of the Reference Numerals:

[0028] 100 - support frame group; 111 - upper steel plate; 112 - lower steel plate; (121; 122; 123) - columns

[0029] 200 - downward pressing mechanism; 201 - downward pressing cylinder; 202 - pressure head

[0030] 300 - air inlet base; 301 - loose sleeve; 302 - piston

[0031] 400 - safety stop mechanism; 401 - stop cylinder; 402 - safety stop

[0032] 500 - Gas source; 800 - O-ring seal Detailed implementation manners

[0033] In the following description, many technical details are provided to help readers better understand this application. However, those of ordinary skill in the art can understand that the claimed technical solutions of this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0034] The following briefly describes some innovative points of the embodiments of this application:

[0035] The ultra-high pressure valve testing device of this application is as shown in Figure 1A 、 1B and includes: a support frame group 100, a downward pressing mechanism 200, an air inlet base 300, and a safety stop mechanism 400. The support frame group 100 includes two steel plates providing horizontal support and three columns (121; 122; 123) providing vertical support, which are used to support each component and bear the structural forces (such as pulling, pressing, pushing, twisting, etc.) generated during ultra-high pressure testing. Among them, the positions of the upper steel plate 111 and the lower steel plate 112 are as shown in Figure 1A . The support frame group constructs the testing device into a two-station.

[0036] The downward pressing mechanism 200 is as shown in Figure 2 and includes a downward pressing cylinder 201 and a pressure head 202. The downward pressing cylinder 201 is located directly above the top of the pressure head 202 and is connected to the pressure head 202 through a "Y"-shaped connecting piece. The "Y"-shaped connecting piece has matching shapes at both ends with the downward pressing cylinder 201 and the pressure head 202 respectively. The pressure head 202 is the component that directly contacts the valve body to be tested. An O-ring seal 800 is provided on the end face of the pressure head. When the downward pressing mechanism 200 presses down on the valve, the O-ring seal contacts the valve port face to form a seal. Another branch is connected to one side of the pressure head, and this branch is connected to an air outlet pipe through a ball valve.

[0037] The air inlet base 300 is as shown in Figure 3 、 4 and includes a loose sleeve 301 and a piston 302. As shown in Figure 4 , the air inlet base 300 is the position where the test high-pressure gas enters the valve. During the test, the valve is placed above the entire air inlet base 300. One end of the air inlet base is connected to the valve inlet through the piston 302, and the other end of the air inlet base is connected to the conduit of the external gas source. The end face of the piston 302 has a protruding shape adapted to the valve inlet end, and an O-ring seal 800 is provided on the piston for sealing and air intake; when air is introduced, the piston moves upward under the pressure difference between the upper and lower sides and squeezes, so that the valve end face and the base end face form a seal and the valve is firmly fixed between the pressure head and the base.

[0038] The safety stopper mechanism 400 is as shown in Figure 5 , 6 , and includes a stopper cylinder 401 and a safety stopper 402. The stopper cylinder 401 is connected to the safety stopper 402 and can drive the safety stopper 402 to move in the horizontal direction. Referring to Figure 6 , in the perspective of Figure 5 , the moving direction of the safety stopper can be understood as the direction of entering and exiting perpendicular to the paper surface. The safety stopper mechanism 400 is arranged below the upper steel plate of the test device. When the pressing mechanism presses the valve downward, a gap appears between the pressing head and the upper steel plate. Specifically, as shown in the position of Figure 2 , at this time, the pressing head of the pressing mechanism has not been pressed down. If the position of the safety stopper at this time is taken as the initial position, its initial position is at the same position as the "shoulder" of the Y-shaped connecting piece, without overlap or insertion. Referring to the position of Figure 6 , at this time, the pressing head of the pressing mechanism has been pressed down. It can be seen that the position of the safety stopper has moved above the "shoulder" of the Y-shaped connecting piece, that is, it has inserted into its "shoulder". The safety stopper 402 performs the above-mentioned movement under the push of the stopper cylinder 401, and its function is to move forward to fill the gap that appears between the pressing head and the upper steel plate, preventing the pressing cylinder from being pushed back by high pressure.

[0039] To make the purpose, technical solution, and advantages of this application clearer, the following will further describe the implementation manner of this application in detail with reference to the drawings.

[0040] The use process of the test device of this application is as follows:

[0041] Place the valve to be tested on the air intake base 300, align the inlet end of the valve with the piston of the air intake base, and press the pressing head of the pressing mechanism 200 into the outlet end of the valve. Insert the safety stopper mechanism 400 into the gap between the pressing head and the upper steel plate. At this time, the ball valve on the branch of the pressing head is closed.

[0042] The test starts, and the support frame group drives the entire test device to sink until the branch on the pressing head is immersed in water. Apply a pressure of 0 MPa - 40 MPa to the valve through the air intake base. Observe the catheter extended by the ball valve immersed in water. If no bubbles appear at the end of the catheter, the high-pressure airtightness of the valve is good; if bubbles appear at the end of the catheter, the valve leaks and fails the high-pressure test.

[0043] It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one" does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element. In the application documents of this patent, if it is mentioned that a certain act is performed according to a certain element, it means that the act is performed at least according to the said element, including two cases: the act is performed only according to the said element, and the act is performed according to the said element and other elements. Expressions such as multiple, many times, various, etc. include 2, 2 times, 2 kinds and more than 2, more than 2 times, more than 2 kinds.

[0044] This specification includes combinations of various embodiments described herein. A separate reference to "an embodiment" or a particular embodiment, etc. does not necessarily refer to the same embodiment; however, unless indicated to be mutually exclusive or clearly understood by those skilled in the art to be mutually exclusive, these embodiments are not mutually exclusive. It should be noted that the word "or" is used in a non-exclusive sense in this specification unless the context clearly dictates otherwise or requires otherwise.

[0045] All documents mentioned in this application are considered to be integrally included in the disclosure of this application so that they can be used as a basis for modification if necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art can make various changes or modifications to this application, and these equivalent forms also fall within the scope claimed by this application.

Claims

1. An ultra-high pressure valve testing device, characterized in that, It includes: a support frame group (100), a downward pressing mechanism (200), an air inlet base (300), and a safety stop mechanism (400); among which the support frame group (100) includes an upper steel plate (111) and a lower steel plate (112) arranged at intervals, and multiple columns; the downward pressing mechanism (200) includes a downward pressing cylinder (201) and a pressing head (202), the downward pressing cylinder (201) is located above the top of the pressing head (202) and is connected to the pressing head (202) through a connecting member; the air inlet base (300) includes a loose sleeve (301) and a piston (302), the piston (302) is located in the loose sleeve (301) and is communicated with the valve inlet; the safety stop mechanism (400) includes a stop cylinder (401) and a safety stop (402), the safety stop (402) moves horizontally under the drive of the stop cylinder (401) and fills the gap that appears between the upper steel plate (111) and the downward pressing mechanism (200).

2. The ultra-high pressure valve testing device according to claim 1, characterized in that, The connecting member between the downward pressing cylinder (201) and the pressing head (202) is in an inverted Y shape and has a shoulder.

3. The ultra-high pressure valve testing device according to claim 1, characterized in that, An O-ring seal is provided on the contact surface between the piston (302) and the valve.

4. The ultra-high pressure valve testing device according to claim 1, characterized in that, An O-ring seal is provided on the contact surface between the pressing head (202) and the valve.

5. The ultra-high pressure valve testing device according to claim 1, characterized in that, A branch is connected to the side of the pressing head (202), and the branch is connected to the outlet pipe through a ball valve.

6. The ultra-high pressure valve testing device according to claim 1, characterized in that, The air inlet base (300) is externally connected to a gas source.

7. The ultra-high pressure valve testing device according to claim 2, characterized in that, When the downward pressing mechanism (200) presses downward, the safety stop (402) is inserted onto the shoulder of the connecting member of the downward pressing mechanism (200).

8. The ultra-high pressure valve testing device according to claim 1, characterized in that, The pressure test range of the ultra-high pressure valve test device is 0MPa ≤ p ≤ 40MPa.

Images