Integrated brake valve group capable of completely isolating manual operation from automatic operation

Abstract

The utility model relates to the technical field of hydraulic generator brake devices of hydropower stations, in particular to an integrated brake valve set completely isolated from manual operation and automatic operation. In order to solve the problems that an existing water-turbine generator set braking device is complex in structure and large in size, and manual operation can affect automatic operation, the integrated braking valve set completely isolated manually and automatically is provided, all complex pipelines in a traditional braking loop are simplified, and braking is stable, reliable and rapid. According to the technical scheme, the automatic control device comprises a bottom plate, an electromagnetic reversing valve, a hand-operated reversing valve and a two-position six-way switching valve, the two-position six-way switching valve is controlled manually and automatically, communicated air pipe channels are arranged in the bottom plate, and the electromagnetic reversing valve, the hand-operated reversing valve and the two-position six-way switching valve are arranged on the bottom plate.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic generator braking devices in hydropower stations, in particular to a manual and automatic fully isolated integrated braking valve group. Background Art

[0002] When the hydropower station's turbine generator set is working, it needs braking due to regular maintenance. The commonly used braking device has a complex structure, especially the numerous pipes in the braking circuit, poor sealing, easy to leak, and occupies a large space. When operating automatically, the switching valve only connects the electromagnetic reversing valve, and the manual reversing valve is in the middle sealing position, isolating the manual operation. During automatic operation, the manual reversing valve is misoperated and leaves the middle sealing position, which may affect the automatic operation. Utility Model Content

[0003] The utility model aims to solve the problems that the braking device of the existing hydro-turbine generator set has a complex structure, a large volume, and manual operation may affect the automatic operation. An integrated brake valve group with manual and automatic isolation is provided, and the valve group simplifies all the complex pipelines in the traditional brake circuit, and the braking is stable, reliable and rapid.

[0004] In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a manual and automatic fully isolated integrated brake valve group, including a bottom plate, a communicating air pipe channel arranged in the bottom plate, an electromagnetic reversing valve and a manual reversing valve arranged on the bottom plate, an A brake port, a B reset port, a P air source port and a T exhaust port arranged on the side of the bottom plate, a pressure chamber port, two left and right exhaust chamber ports and two left and right working chamber ports arranged on the electromagnetic reversing valve, and a P1 port, an A1 port and a P2 port arranged on the manual reversing valve. Port, T1 port and B1 port; a two-position six-way switching valve is also arranged on the bottom plate, and the two-position six-way switching valve is provided with ports F1, F2, F3, F4, F5 and F6. The F1 port of the two-position six-way switching valve is connected with the B reset port, the F2 port is connected with the B1 port of the manual reversing valve, the F3 port is connected with the right working chamber of the electromagnetic reversing valve, the F4 port is connected with the A brake chamber, the F5 port is connected with the A1 port of the manual reversing valve, and the F6 port is connected with the left working chamber port of the electromagnetic reversing valve.

[0005] Furthermore, the pressure chamber port of the electromagnetic reversing valve is connected to the P air source port and the P1 port of the manual reversing valve.

[0006] Furthermore, the two exhaust ports of the electromagnetic reversing valve are connected to the T exhaust port and the T1 port of the manual reversing valve.

[0007] Furthermore, the two-position six-way switching valve is dual-controlled manually and automatically.

[0008] Compared with the prior art, the utility model has the following advantages and effects:

[0009] 1. The utility model adopts a plate structure, and integrates the electromagnetic reversing valve and the manual reversing valve on the valve block, with fewer external connections, and the valve block is compact, small in size and light in weight;

[0010] 2. The utility model adds a two-position six-way switching valve, which can realize not only automatic braking but also manual braking function, and manual operation will not affect the automatic function during automatic operation, that is, they will not affect or interfere with each other, so it is more reliable and has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] Figure 2 It is a top view of the utility model.

[0013] Figure 3 It is the principle diagram of the utility model.

[0014] Figure 4 It is a schematic diagram of the structure of the electromagnetic reversing valve, where (a) is the wiring diagram and (b) is the structure diagram.

[0015] Figure 5 It is a structural schematic diagram of a manual reversing valve; (a) is the structural diagram, and (b) is the wiring diagram.

[0016] Figure 6 Schematic diagram of the structure of a two-position six-way switching valve; (a) is the structural diagram, and (b) is the wiring diagram.

[0017] Explanation of the reference numerals: 1-base plate, 2-electromagnetic reversing valve, 3-manual reversing valve, 4-two-position six-way switching valve. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and in detail below in conjunction with specific embodiments. All other embodiments obtained by ordinary technicians in the field without creative work are within the protection scope of the utility model.

[0019] This embodiment provides an integrated brake valve group with complete manual and automatic isolation, such as Figure 1 and Figure 2 As shown, it includes a base plate 1, an electromagnetic reversing valve 2, a manual reversing valve 3 and a two-position six-way switching valve 4. The two-position six-way switching valve 4 is manually and automatically controlled. A communicating air pipe channel is arranged in the base plate 1. The electromagnetic reversing valve 2, the manual reversing valve 3 and the two-position six-way switching valve 4 are arranged on the base plate 1.

[0020] As an implementation method in this embodiment, a brake port A, a reset port B, an air source port P and an exhaust port T are provided on the side of the base plate 1, and the compressed air P is 0.5-0.7MPa.

[0021] As an implementation method in this embodiment, the electromagnetic reversing valve 2 is provided with a pressure chamber port, two left and right exhaust chamber ports, and two left and right working chamber ports. The pressure chamber port is 1, the left and right exhaust chamber ports are 3 and 5, and the left and right working chamber ports are 2 and 4. Figure 3 As shown; the pressure chamber port of the electromagnetic reversing valve 2 is connected to the P gas source port and the P1 port of the manual reversing valve 3; the two exhaust ports of the electromagnetic reversing valve 2 are connected to the T exhaust port and the T1 port of the manual reversing valve 3, as shown Figure 3 and Figure 4 shown.

[0022] As an implementation method in this embodiment, the two-position six-way switching valve 4 is provided with an F1 port, an F2 port, an F3 port, an F4 port, an F5 port and an F6 port. The F1 port of the two-position six-way switching valve 4 is connected to the B reset port, the F2 port is connected to the B1 port of the manual reversing valve 3, the F3 port is connected to the right working chamber of the electromagnetic reversing valve 2, the F4 port is connected to the A brake chamber, the F5 port is connected to the A1 port of the manual reversing valve 3, and the F6 port is connected to the left working chamber port of the electromagnetic reversing valve 2. Figure 3 and Figure 6 shown.

[0023] The working principle of the utility model is as follows: Figure 2-Figure 6 As shown:

[0024] Automatic braking: When the electromagnet on the right side of the electromagnetic reversing valve 2 is energized instantaneously, the valve core moves to the left, and the air in the pressure chamber 1 enters the left working chamber 4 of the electromagnetic reversing valve 2. The left working chamber 4 is connected to the A brake port of the mounting base plate through F6 and F4 of the two-position six-way switching valve. At this time, the right working chamber 2 of the electromagnetic reversing valve 2 is connected to the exhaust chamber 3, and is connected to the T exhaust chamber of the mounting base plate 1. The A brake chamber of the mounting base plate 1 is connected to the pressure air, and the B return chamber is connected to the right working chamber 2 of the mounting base plate 1 through the two-position six-way switching valves F1 and F3 through the electromagnetic reversing valve 2 and its exhaust chamber 3, and is connected to the exhaust, and the unit is braked.

[0025] Automatic air damper drop: When the electromagnet on the left side of the electromagnetic reversing valve 2 is energized instantaneously, the valve core moves to the right, and the air in the pressure chamber 1 passes through the right working chamber 2 of the electromagnetic reversing valve 2. The right working chamber 2 is connected to the B return port of the bottom plate 1 through the two-position six-way switching valves F3 and F1. At this time, the left working chamber 4 of the electromagnetic reversing valve 2 is connected to the exhaust chamber 5, and is connected to the T exhaust chamber of the bottom plate 1; the B return chamber of the bottom plate 1 is connected to the pressure air, and the A brake port is connected to the left working chamber 4 of the electromagnetic reversing valve through the two-position six-way switching valves F4 and F6 through the electromagnetic reversing valve and the exhaust chamber 5, and the exhaust is connected, and the air damper of the unit drops.

[0026] When the two-position six-way switching valve is in the automatic position, the manual reversing valve is completely isolated. At this time, the manual reversing valve 3 will not affect the automatic operation of the electromagnetic reversing valve 2 at any position;

[0027] 2. Manual brake, wind gate:

[0028] Move the handle of the self-made two-position six-way switching valve 4 to the manual position.

[0029] Manual braking: turn the handle of the self-made manual reversing valve 3 to the braking position, its pressure chamber P1 is connected to the left working chamber A1, the left working chamber A1 is connected to the F4 chamber of the two-position six-way switching valve 4 through the F5 of the two-position six-way switching valve 4, the F4 of the two-position six-way switching valve 4 is connected to the A brake chamber, at this time, the A brake chamber is connected to the pressure gas; the B return chamber is connected to the F1 of the two-position six-way switching valve 4, the F1 of the two-position six-way switching valve 4 is connected to the F2 of the two-position six-way switching valve 4, the F2 of the two-position six-way switching valve 4 is connected to the B1 of the manual reversing valve 3, the B1 of the manual reversing valve 3 is connected to the T1 of the manual reversing valve 3, the T1 of the manual reversing valve 3 is connected to the T exhaust chamber of the bottom plate 1, the B return chamber is connected to the exhaust, and the unit is braked. During the unit braking, the handle of the self-made two-position six-way switching valve 4 should always be kept in the manual position.

[0030] Manual air damper falling: turn the handle of the homemade manual reversing valve 3 to the return position, its pressure chamber P1 is connected with the right working chamber B1, the right working chamber B1 is connected with the F2 and F1 chambers of the two-position six-way switching valve 4, the F1 of the two-position six-way switching valve 4 is connected with the B return chamber, at this time, the B return chamber is connected with the pressure gas; the A brake chamber is connected with the F4 of the two-position six-way switching valve 4, the F4 of the two-position six-way switching valve 4 is connected with F5, the F5 of the two-position six-way switching valve 4 is connected with A1 of the manual reversing valve 3, the A1 of the manual reversing valve 3 is connected with T1, the manual reversing valve 3 T1 is connected with the T exhaust chamber of the bottom plate 1, the A brake chamber is connected with the exhaust, and the air damper of the unit falls.

[0031] When the two-position six-way switching valve 4 is in the manual position, the electromagnetic reversing valve 2 is completely isolated. At this time, the electromagnetic reversing valve 2 will not affect the operation of the manual reversing valve in any position;

[0032] The above embodiments are only for the purpose of illustrating the principle and effect of the present invention. Any modifications and alterations based on the present invention are within the scope of patent protection of the present invention.

Claims

1. A manual and automatic fully isolated integrated brake valve group, comprising a base plate (1), a communicating air pipe passage arranged in the base plate (1), an electromagnetic reversing valve (2) and a manual reversing valve (3) arranged on the base plate (1), a brake port A, a reset port B, an air source port P and an exhaust port T arranged on the side of the base plate (1), a pressure chamber port, two left and right exhaust chamber ports and two left and right working chamber ports arranged on the electromagnetic reversing valve (2), and a P1 port, an A1 port, a T1 port and a B1 port arranged on the manual reversing valve (3); characterized in that The bottom plate (1) is also provided with a two-position six-way switching valve (4), and the two-position six-way switching valve (4) is provided with an F1 port, an F2 port, an F3 port, an F4 port, an F5 port and an F6 port. The F1 port of the two-position six-way switching valve (4) is connected to the B reset port, the F2 port is connected to the B1 port of the manual reversing valve (3), the F3 port is connected to the right working chamber of the electromagnetic reversing valve (2), the F4 port is connected to the A brake chamber, the F5 port is connected to the A1 port of the manual reversing valve (3), and the F6 port is connected to the left working chamber port of the electromagnetic reversing valve (2).

2. The integrated brake valve assembly with complete manual and automatic isolation according to claim 1, characterized in that: The pressure chamber port of the electromagnetic reversing valve (2) is communicated with the P air source port and the P1 port of the manual reversing valve (3).

3. A manual and automatic fully isolated integrated brake valve group according to claim 1 or 2, characterized in that: The two exhaust ports of the electromagnetic reversing valve (2) are connected to the T exhaust port and the T1 port of the manual reversing valve (3).

4. The integrated brake valve assembly with complete manual and automatic isolation according to claim 3, characterized in that: The two-position six-way switching valve (4) is controlled manually and automatically.

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