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Novel stop valve

A globe valve, a new type of technology, applied in the directions of lift valves, valve details, valve devices, etc., can solve the problems of inconvenient disassembly and assembly of globe valves, high cost, save maintenance time, reduce procurement costs, and reduce manufacturing costs.

Inactive Publication Date: 2021-07-23
HARBIN HBC VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention solves the problems of inconvenient disassembly and assembly and high cost of stop valves used in existing thermal power and nuclear power units

Method used

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Experimental program
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Effect test

specific Embodiment approach 1

[0032] Specific implementation mode one: combine Figure 1-Figure 7 Describe this embodiment, a new shut-off valve of this embodiment, including valve body 1, valve seat 2, valve flap 3, bracket 6, valve stem 7 and valve stem nut 8, valve body 1 is provided with valve seat 2, The valve disc 3 is installed in the inner cavity of the valve body 1, the valve disc 3 is connected with the valve stem 7, the valve disc 3 is arranged on the valve seat 2, the valve body 1 is connected with the bracket 6, and a pair of The first arc-shaped boss 13 is also provided with a first positioning platform 14 on the side wall of the valve body 1. The first positioning platform 14 is located below the first arc-shaped boss 13, and the inner wall of the lower part of the bracket 6 is provided with a first arc-shaped The arc ferrule 19 that the boss 13 matches, the first arc boss 13 is installed in the arc ferrule 19, the second positioning platform 17 is installed on the bottom end surface of the ...

specific Embodiment approach 2

[0033] Specific implementation mode two: combination Figure 1-Figure 8 Describe this embodiment, a new cut-off valve of this embodiment, also includes a flange 10 and an electric device 11, the flange 10 is connected to the support 6, and the electric device 11 is connected to the support 6 through the flange 10;

[0034] Specifically, a pair of second arc-shaped bosses 16 are symmetrically arranged on the upper side wall of the bracket 6, two buckles 20 matching the second arc-shaped bosses 16 are symmetrically arranged on the flange 10, and the second arc-shaped bosses 16 are symmetrically arranged. Shaped boss 16 is installed with buckle 20, and flange plate 10 enters below the second arc-shaped boss 16 of support 6 from the neutral position of second arc-shaped boss 16 of support 6, and flange plate 10 and support 6 Relatively rotate 90°, then lift up the flange plate 10, so that the buckle 20 of the flange plate 10 is under the second arc-shaped boss 16 of the bracket 6,...

specific Embodiment approach 3

[0036] Specific implementation mode three: combination Figure 1-Figure 8 Describe this embodiment, a new cut-off valve of this embodiment also includes a handwheel 12, the handwheel 12 is fixedly installed on the valve stem nut 9, the handwheel 12 is installed in cooperation with the valve stem nut 8, and is controlled by rotating the handwheel 12. The valve stem 7 drives the valve clack 3 to open or close.

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Abstract

The invention discloses a novel stop valve, belongs to the field of stop valves for thermal generator sets, and solves the problems that existing stop valves for thermal power and nuclear power units are inconvenient to disassemble and assemble and high in cost. The novel stop valve comprises a valve body, a valve seat, a valve clack, a support, a valve rod and a valve rod nut, wherein the valve seat is arranged in the valve body; the valve clack is mounted in an inner cavity of the valve body; the valve clack is connected with the valve rod and arranged on the valve seat; the valve body is connected with the support; a first arc-shaped boss is arranged on the side wall of the upper portion of the valve body; a first positioning table is arranged on the side wall of the valve body; the first positioning table is located below the first arc-shaped boss; an arc-shaped clamping sleeve matched with the first arc-shaped boss is arranged on the inner wall of the lower portion of the support; the first arc-shaped boss is mounted in the arc-shaped clamping sleeve; a second positioning table is mounted on the bottom end face of the support; and the first positioning table and the second positioning table are overlapped one after the other and fixed through a first screw. The novel stop valve is convenient to disassemble and assemble, the service life of the stop valve is effectively prolonged, and the interchangeability of an electric stop valve and a manual stop valve is improved.

Description

technical field [0001] The invention relates to a novel cut-off valve, which belongs to the field of cut-off valves for thermal power generating sets. Background technique [0002] The thermal power generation unit uses coal, oil or combustible gas as fuel to heat the water in the boiler to increase its temperature, and then uses steam with a certain pressure to drive the gas turbine to generate electricity. [0003] Globe valve, also known as cut-off valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve should be large, otherwise the failure of the...

Claims

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Application Information

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IPC IPC(8): F16K1/02F16K1/32F16K27/02F16K31/60F16K31/02
CPCF16K1/02F16K1/32F16K27/02F16K31/055
Inventor 万胜军高德明赵宇
Owner HARBIN HBC VALVE
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