High-pressure-difference pressure reduction regulating valve for power station

Abstract

The utility model discloses a high-pressure-difference pressure reduction regulating valve for a power station, and relates to the technical field of regulating valves. The power station high-pressure-difference pressure reduction regulating valve comprises a regulating valve body, a pneumatic unit is arranged on the regulating valve body, a limiting sleeve seat is fixedly connected to the regulating valve body, a clamping block is movably clamped in the limiting sleeve seat, a U-shaped frame is arranged on the clamping block, and a connecting frame is arranged on the U-shaped frame; the connecting frame is provided with a plurality of sets of protection rings used for providing protection for the adjusting valve body and the pneumatic unit, and the U-shaped frame is provided with a cable limiting mechanism. According to the power station high-pressure-difference pressure reduction regulating valve, the multiple sets of protection rings are convenient to install, the regulating valve body and the pneumatic unit are protected, it is guaranteed that the regulating valve body and the pneumatic unit are not prone to collision or damage and good in stability, meanwhile, the design of a cable limiting mechanism is matched, a cable on the regulating valve body is reinforced and supported, and the service life of the cable is prolonged. And the cable and the regulating valve main body are stably connected and are not easy to loosen or loosen.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a high-pressure differential pressure reducing regulating valve for a power station. Background Art

[0002] Power plant high-pressure differential pressure reducing regulating valves are widely used in power plants in various applications requiring precise control of media flow and pressure, such as boiler feedwater systems, steam turbine speed control systems, and condensate recovery systems. In these systems, the valves precisely regulate the flow and pressure of the media, ensuring stable operation of power plant equipment and efficient power generation.

[0003] In order to ensure the accuracy of the high-pressure differential pressure-reducing regulating valve in the prior art, pneumatic control of the valve stem is usually adopted. At present, during the use of some high-pressure differential pressure-reducing regulating valves in the open position, since the valve body and external pneumatic equipment are directly exposed to the outside, and there are often situations where objects are carried or people walk in the open position, it is easy for objects to collide with the valve body, thereby causing damage to the valve body or pneumatic equipment and affecting the service life. In addition, the cables are not reinforced, and the connection between the cables and the valve body is easy to loosen and has poor stability. In view of the shortcomings of the prior art, the utility model provides a high-pressure differential pressure-reducing regulating valve for a power station to solve the above problems. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a high-pressure differential pressure reducing regulating valve for a power station, which realizes the limit connection of the clamping block through a limit sleeve, and the clamping block provides support for the U-shaped frame, the connecting frame and multiple sets of protective rings, thereby making it easy to install the multiple sets of protective rings and provide protection for the regulating valve body and the pneumatic unit, ensuring that the regulating valve body and the pneumatic unit are not easily damaged by collision and have good stability. At the same time, in conjunction with the design of the cable limiting mechanism, the cables on the regulating valve body are reinforced and supported, and the connection between the cables and the regulating valve body is stable and not easy to loosen or come off.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-pressure differential pressure reducing regulating valve for a power station, comprising a regulating valve body, a pneumatic unit provided on the regulating valve body, a limit sleeve fixedly connected to the regulating valve body, and a clamping block movably connected to the internal portion of the limit sleeve;

[0006] A U-shaped frame is provided on the clamping block, a connecting frame is provided on the U-shaped frame, and a plurality of protective rings for protecting the regulating valve body and the pneumatic unit are provided on the connecting frame;

[0007] A cable limiting mechanism is provided on the U-shaped frame.

[0008] Preferably, the cable limiting mechanism includes a U-shaped seat fixedly connected to the U-shaped frame and a screw rod threadedly connected to the inside of the U-shaped seat, and a clamping block is rotatably connected to the screw rod.

[0009] Preferably, a sliding groove is provided on the U-shaped seat, a sliding block is fixedly connected to the clamping block, and the sliding block is slidably connected in the sliding groove.

[0010] Preferably, a rotating handle is fixedly connected to the screw rod.

[0011] Preferably, the limiting sleeve is provided with a locking mechanism for limiting the clamping block, and the clamping block is provided with a clamping slot.

[0012] Preferably, the locking mechanism includes a rotating plate rotatably connected to the limiting sleeve, the rotating plate is provided with a clamping joint, the clamping joint is movably clamped in the clamping slot, and a spring is fixedly connected between the rotating plate and the limiting sleeve.

[0013] The utility model discloses a high-pressure differential pressure reducing regulating valve for a power station, which has the following beneficial effects:

[0014] The high-pressure differential pressure reducing regulating valve of the power station realizes the limit connection of the clamping block through the limit sleeve. The clamping block provides support for the U-shaped frame, the connecting frame and multiple sets of protective rings, thereby making it easy to install the multiple sets of protective rings and provide protection for the regulating valve body and the pneumatic unit, ensuring that the regulating valve body and the pneumatic unit are not easily damaged by collision and have good stability. At the same time, with the design of the cable limiting mechanism, the cable on the regulating valve body is reinforced and supported, and the connection between the cable and the regulating valve body is stable and not easy to loosen or come loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a first perspective diagram of the overall structure of the utility model;

[0017] Figure 2 This is the second perspective of the overall structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the U-shaped frame of the utility model;

[0019] Figure 4 This is a schematic structural diagram of the position limiting sleeve of the utility model;

[0020] Figure 5 For this utility model Figure 3 Enlarged view of part A;

[0021] Figure 6 For this utility model Figure 4 Enlarged view of part B.

[0022] In the figure: 1. Control valve body; 11. Pneumatic unit; 2. Limit sleeve; 3. Clamping block; 31. Clamping slot; 4. U-shaped frame; 5. Connecting frame; 6. Protective ring; 7. Cable limiting mechanism; 71. U-shaped seat; 72. Screw rod; 721. Turning handle; 73. Clamping block; 731. Slide groove; 732. Slider; 8. Locking mechanism; 81. Turning plate; 82. Clamping joint; 83. Spring. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] The embodiment of the present application provides a high-pressure differential pressure-reducing regulating valve for a power station, which solves the problem that some high-pressure differential pressure-reducing regulating valves in an open position are in use. Since the valve body and external pneumatic equipment are directly exposed to the outside, and there are often situations where objects are carried or people walk in the open position, it is easy for objects to collide with the valve body, thereby causing damage to the valve body or pneumatic equipment and affecting the service life. In addition, the cables are not reinforced, and the connection between the cables and the valve body is easy to loosen, resulting in poor stability.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] The utility model discloses a high pressure differential pressure reducing regulating valve for a power station. Figure 1-6 As shown, it includes a regulating valve body 1, a pneumatic unit 11 is provided on the regulating valve body 1, a limiting sleeve 2 is fixedly connected to the regulating valve body 1, and a clamping block 3 is movably connected inside the limiting sleeve 2;

[0027] A U-shaped frame 4 is provided on the clamping block 3, a connecting frame 5 is provided on the U-shaped frame 4, and a plurality of protective rings 6 are provided on the connecting frame 5 for protecting the regulating valve body 1 and the pneumatic unit 11;

[0028] A cable limiting mechanism 7 is provided on the U-shaped frame 4 .

[0029] The high-pressure differential pressure reducing regulating valve of the power station realizes the clamping limit of the clamping block 3 through the limiting sleeve 2. The clamping block 3 provides support for the U-shaped frame 4, the connecting frame 5 and the multiple sets of protective rings 6, so that the multiple sets of protective rings 6 are easy to install and provide protection for the regulating valve body 1 and the pneumatic unit 11, ensuring that the regulating valve body 1 and the pneumatic unit 11 are not easily damaged by collision and have good stability. At the same time, the design of the cable limiting mechanism 7 is used to reinforce the support of the cable on the regulating valve body 1, and the connection between the cable and the regulating valve body 1 is stable and not easy to loosen or come off.

[0030] The cable limiting mechanism 7 includes a U-shaped seat 71 fixedly connected to the U-shaped frame 4 and a screw rod 72 threadedly connected to the inside of the U-shaped seat 71, and a clamping block 73 is rotatably connected to the screw rod 72;

[0031] When the cable limiting mechanism 7 is needed to clamp and limit the cable, the cable on the regulating valve body 1 is first placed between the U-shaped seat 71 and the clamping block 73. At this time, the screw rod 72 is rotated so that the screw rod 72 pushes the clamping block 73 to move, and finally the clamping block 73 and the U-shaped seat 71 are reinforced and clamped to the cable.

[0032] The U-shaped seat 71 is provided with a slide groove 731, the clamping block 73 is fixedly connected with a slider 732, the slider 732 is slidably connected in the slide groove 731, and the screw rod 72 is fixedly connected with a rotating handle 721. The cable limiting mechanism 7 has a compact structure and stable operation, and has a good reinforcement effect on the cable. Among them, the design of the slider 732 and the slide groove 731 makes the force on the clamping block 73 stable, ensuring that the clamping block 73 has a good clamping effect on the cable. The design makes it easy and labor-saving when the screw rod 72 is rotated.

[0033] The limiting sleeve 2 is provided with a locking mechanism 8 for limiting the card block 3. The card block 3 is provided with a card slot 31. The locking mechanism 8 includes a rotating plate 81 rotatably connected to the limiting sleeve 2. The rotating plate 81 is provided with a card joint 82. The card joint 82 is movably connected to the card slot 31. A spring 83 is fixedly connected between the rotating plate 81 and the limiting sleeve 2. The design of the locking mechanism 8 makes it easy to install and limit the card block 3 and to subsequently disassemble it. Therefore, it makes it easy to disassemble and assemble the U-shaped frame 4, the connecting frame 5 and the protective ring 6. When the protective ring 6 is subsequently damaged, it is convenient to quickly replace the protective ring 6.

[0034] When installing the protective ring 6, first press the rotating plate 81 so that the rotating plate 81 squeezes the spring 83 and lifts the card joint 82. At this time, align the card block 3 with the inside of the limit sleeve 2 and insert it. After it is fully inserted, release the rotating plate 81. The spring 83 resets and pushes the rotating plate 81 to rotate. The rotating plate 81 drives the card joint 82 to move and makes the card joint 82 be clamped in the card slot 31, completing the quick installation of the card block 3, U-shaped frame 4, connecting frame 5 and protective ring 6.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure differential pressure reducing regulating valve for a power station, comprising a regulating valve body (1), wherein the regulating valve body (1) is provided with a pneumatic unit (11), characterized in that: A limiting sleeve (2) is fixedly connected to the regulating valve body (1), and a clamping block (3) is movably clamped inside the limiting sleeve (2); A U-shaped frame (4) is provided on the clamping block (3), a connecting frame (5) is provided on the U-shaped frame (4), and a plurality of protective rings (6) for protecting the regulating valve body (1) and the pneumatic unit (11) are provided on the connecting frame (5); The U-shaped frame (4) is provided with a cable limiting mechanism (7).

2. A power station high pressure differential pressure reducing regulating valve according to claim 1, characterized in that: The cable limiting mechanism (7) comprises a U-shaped seat (71) fixedly connected to the U-shaped frame (4) and a screw rod (72) threadedly connected to the inside of the U-shaped seat (71); a clamping block (73) is rotatably connected to the screw rod (72).

3. The high pressure differential pressure reducing regulating valve for power stations according to claim 2, characterized in that: A sliding groove (731) is provided on the U-shaped seat (71), a sliding block (732) is fixedly connected to the clamping block (73), and the sliding block (732) is slidably connected in the sliding groove (731).

4. The high pressure differential pressure reducing regulating valve for a power station according to claim 2, characterized in that: A rotating handle (721) is fixedly connected to the screw rod (72).

5. The high pressure differential pressure reducing regulating valve for power stations according to claim 1, characterized in that: The limiting sleeve (2) is provided with a locking mechanism (8) for limiting the position of the clamping block (3), and the clamping block (3) is provided with a clamping slot (31).

6. The high pressure differential pressure reducing regulating valve for a power station according to claim 5, characterized in that: The locking mechanism (8) comprises a rotating plate (81) rotatably connected to the limiting sleeve (2); a clamping joint (82) is provided on the rotating plate (81); the clamping joint (82) is movably clamped in the clamping groove (31); and a spring (83) is fixedly connected between the rotating plate (81) and the limiting sleeve (2).

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