Ball valve moving ring sealing ring service life experiment device

Abstract

The utility model relates to the technical field of ball valves, and discloses a ball valve moving ring sealing ring service life experiment device, which solves the problems in the background technology, and comprises a control cabinet, a self-holding ball valve and a pumping storage ball valve, the self-holding ball valve is arranged in the control cabinet, a CR4 counter is also arranged in the control cabinet, and the CR4 counter is connected with the pumping storage ball valve. The self-holding ball valve is connected with the storage ball valve through a pipeline; the storage ball valve comprises a cylinder body, an end cover and a reversing driving mechanism, a sealing mechanism is arranged between the cylinder body and the end cover, a first water injection hole and a second water injection hole are formed in the cylinder body, and the first water injection hole and the second water injection hole are both connected with a pipeline; according to the utility model, reversing reciprocating circulation can be automatically controlled, the sealing mechanism is tested through the moving end, and the test is stopped until leakage is seen by naked eyes, so that the purpose of testing the service life of the sealing ring is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, in particular to a life test device for a moving ring seal of a ball valve. Background Art

[0002] As the country vigorously promotes the development of clean energy, the construction of pumped storage power stations has sprung up like mushrooms after a rain. As the last line of defense for pump turbines, pumped storage ball valves play a key role. Compared with conventional power stations, pumped storage ball valves need to be started frequently, with the number of opening and closing times reaching more than a dozen times a day. Therefore, the life of the dynamic seal of the pumped storage ball valve is a very strict test. The quality of the dynamic seal directly affects the power generation efficiency of the power station.

[0003] The current test device lacks simulation of actual working conditions, and the control method is inconvenient, and the applicability and test efficiency are low. Therefore, we propose a ball valve moving ring seal life test device. Utility Model Content

[0004] In order to solve the problems that the current test device lacks simulation of actual working conditions, and the control method is relatively inconvenient, and the applicability and test efficiency are low, the utility model provides the following technical solutions: a ball valve moving ring seal life test device, including a control cabinet, a self-retaining ball valve and a pumping storage ball valve, the self-retaining ball valve is arranged in the control cabinet, and a CR4 counter is also arranged in the control cabinet, and the self-retaining ball valve and the storage ball valve are connected by a pipeline; the storage ball valve includes a cylinder body, an end cover and a reversing drive mechanism, a sealing mechanism is arranged between the cylinder body and the end cover, and a first water injection hole and a pumping storage ball valve are opened on the cylinder body The second water injection hole, the first water injection hole and the second water injection hole are all connected to the pipeline; the reversing drive mechanism has two signal ends, and the two signal ends are respectively arranged on one side of the first water injection hole and the second water injection hole, and a movable end is arranged between the two signal ends, and the movable end is connected to the sealing mechanism. Water flowing into the first water injection hole and the second water injection hole can drive the movable end to move toward the opposite side and trigger the signal end on the opposite side. The two signal ends are triggered to drive the reversal of the self-retaining ball valve by generating a first in-place signal and a second in-place signal, wherein the first in-place signal can also drive the CR4 counter technology once.

[0005] Preferably, the two signal ends are a first proximity switch and a second proximity switch, the first proximity switch is on the same side as the first water injection hole and can generate a first arrival signal, and the second proximity switch is installed on the same side as the second water injection hole and can generate a second arrival signal.

[0006] Preferably, the sealing mechanism comprises a first sealing ring and a second sealing ring.

[0007] Preferably, the mobile terminal is a ring structure.

[0008] Preferably, grooves of multiple sizes are provided on the movable end, and the multiple grooves can be used to install sealing rings of different cross-sections and different materials.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] During the test, after the operating instructions are given through the control cabinet, water starts to be injected from the second water injection hole on the cylinder body. Under the pressure of the water, the mobile end starts to move to the opposite side of the second water injection hole. When the mobile end reaches and triggers the first proximity switch, a first in-position signal is generated, and the self-holding ball valve is driven to change direction. Water is started from the first water injection hole. Under the pressure of the water, the mobile end starts to move to the opposite side of the second water injection hole. When the mobile end reaches and triggers the second proximity switch, a second in-position signal is generated, and the self-holding ball valve is driven to change direction. At the same time, the CR4 counter counts 1 time, indicating that an action is completed. The reciprocating cycle is repeated, and the sealing mechanism is tested through the mobile end until visible leakage is seen by the naked eye, and the test is stopped to achieve the purpose of verifying the life of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a front view structural diagram of the control cabinet of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model storage ball valve from the front view;

[0014] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of the side view section at AA in the middle;

[0015] In the figure: 1. control cabinet; 2. pipeline; 3. self-retaining ball valve; 4. end cover; 5. first sealing ring; 6. moving end; 7. second sealing ring; 8. cylinder body; 81. first water injection hole; 82. second water injection hole; 9. first proximity switch; 10. second proximity switch. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] Depend on Figure 1-3 It is given that the utility model includes a control cabinet 1, a self-retaining ball valve 3 and a pumped storage ball valve, the self-retaining ball valve 3 is arranged in the control cabinet 1, and a CR4 counter is also arranged in the control cabinet 1, and the self-retaining ball valve 3 is connected to the storage ball valve through a pipeline 2; the storage ball valve includes a cylinder body 8, an end cover 4 and a reversing drive mechanism, a sealing mechanism is arranged between the cylinder body 8 and the end cover 4, a first water injection hole 81 and a second water injection hole 82 are opened on the cylinder body 8, and the first water injection hole 81 and the second water injection hole 82 are both connected to the pipeline 2; the reversing drive mechanism has two signal ends, the two signal ends are respectively arranged on one side of the first water injection hole 81 and the second water injection hole 82, a moving end 6 is arranged between the two signal ends, and the moving end 6 is connected to the sealing mechanism, and the water flowing into the first water injection hole 81 and the second water injection hole 82 can drive the moving end 6 to move toward the opposite side and trigger the signal end on the opposite side, and the two signal ends are triggered to drive the self-retaining ball valve 3 to reverse by generating a first in-place signal and a second in-place signal, wherein the first in-place signal can also drive the CR4 counter technology once.

[0018] The two signal ends are the first proximity switch 9 and the second proximity switch 10. The first proximity switch 9 is on the same side as the first water injection hole 81 and can generate a first in-place signal. The second proximity switch 10 is installed on the same side as the second water injection hole 82 and can generate a second in-place signal.

[0019] The sealing mechanism comprises a first sealing ring 5 and a second sealing ring 7 .

[0020] The mobile terminal 6 is a ring structure.

[0021] The movable end 6 is provided with grooves of multiple sizes, and the multiple grooves can be used to install sealing rings of different cross-sections and different materials.

[0022] Working principle: During the test, after the operation instruction is given through the control cabinet 1, water starts to be injected from the second water injection hole 82 on the cylinder body 8. Under the pressure of the water, the mobile end 6 starts to move to the opposite side of the second water injection hole 82. When the mobile end 6 reaches and triggers the first proximity switch 9, a first in-position signal is generated, and the self-retaining ball valve 3 is driven to change direction, and water is injected from the first water injection hole 82. Under the pressure of the water, the mobile end 6 starts to move to the opposite side of the second water injection hole 81. When the mobile end 6 reaches and triggers the second proximity switch 10, a second in-position signal is generated, and the self-retaining ball valve 3 is driven to change direction. At the same time, the CR4 counter counts 1 time, indicating the completion of an action. The reciprocating cycle tests the sealing mechanism through the mobile end 6 until visible leakage is seen by the naked eye and the test is stopped to achieve the purpose of testing the life of the sealing ring.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. 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 "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve moving ring seal life test device, characterized by: It comprises a control cabinet (1), a self-retaining ball valve (3) and a pumping and storing ball valve, wherein the self-retaining ball valve (3) is arranged in the control cabinet (1), a CR4 counter is also arranged in the control cabinet (1), and the self-retaining ball valve (3) and the storing ball valve are connected via a pipeline (2); The storage ball valve comprises a cylinder body (8), an end cover (4) and a reversing drive mechanism, a sealing mechanism is provided between the cylinder body (8) and the end cover (4), a first water injection hole (81) and a second water injection hole (82) are provided on the cylinder body (8), and the first water injection hole (81) and the second water injection hole (82) are both connected to the pipeline (2); The reversing drive mechanism has two signal ends, which are respectively arranged on one side of the first water injection hole (81) and the second water injection hole (82). A moving end (6) is arranged between the two signal ends, and the moving end (6) is connected to the sealing mechanism. Water flowing into the first water injection hole (81) and the second water injection hole (82) can drive the moving end (6) to move toward the opposite side and trigger the signal end on the opposite side. The two signal ends are triggered to drive the self-retaining ball valve (3) to reverse by generating a first in-place signal and a second in-place signal, wherein the first in-place signal can also drive the CR4 counter technology once.

2. A ball valve moving ring seal life test device according to claim 1, characterized in that: The two signal ends are respectively a first proximity switch (9) and a second proximity switch (10); the first proximity switch (9) is on the same side as the first water injection hole (81) and is capable of generating a first arrival signal; the second proximity switch (10) is installed on the same side as the second water injection hole (82) and is capable of generating a second arrival signal.

3. A ball valve moving ring seal life test device according to claim 2, characterized in that: The sealing mechanism comprises a first sealing ring (5) and a second sealing ring (7).

4. A ball valve moving ring seal life test device according to claim 3, characterized in that: The mobile terminal (6) is a ring structure.

5. A ball valve moving ring seal life test device according to claim 4, characterized in that: The movable end (6) is provided with grooves of multiple sizes, and the multiple grooves can be used to install sealing rings of different cross-sections and different materials.

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