Multi-stage dynamic regulating valve of generator set coupling type waste heat boiler

Abstract

The utility model relates to the technical field of valves, in particular to a multistage dynamic regulating valve of a generator set coupling type waste heat boiler, which comprises a valve body, a valve cover, a valve rod and a control assembly. And a valve rod channel is arranged in the multi-stage valve plate group. The valve rod moves along the valve rod channel under the action of the control assembly, so that the flow of the regulating valve is controlled. The multi-stage valve plate group design is adopted, the number of the exposed spiral flow channels can be accurately controlled, and accurate adjustment of air flow is achieved. In addition, the multi-stage valve plate group is good in structural stability, and can adapt to steam and various other media. The control assembly is provided with a sensor and a controller. The sensor monitors the pressure and flow of the air outlet pipe in real time and transmits data to the controller, the controller can accurately regulate and control the motor to drive the valve rod to ascend and descend, dynamic regulation of the flow of the regulating valve is achieved, and it is guaranteed that the system is in the optimal operation state all the time.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a kind of multistage dynamic regulating valve of generator set coupling type waste heat boiler. BACKGROUND

[0002] Generator set coupling type waste heat boiler system is a kind of system that generator set and waste heat boiler are organically combined to improve energy utilization efficiency and economic benefit.Generator set coupling type waste heat boiler system includes waste heat boiler, generator set and connecting pipeline valve and the like.Waste heat boiler collects exhaust gas waste heat generated during the operation of generator set, and transfers the heat to water to generate steam, and the steam enters the steam turbine of generator set to drive its rotation, drives the generator to generate electricity, and the condensed water after work is recycled.

[0003] In the existing generator set coupling type waste heat boiler system, the traditional regulating valve is difficult to meet the complex working condition requirement.The existing regulating valve has deficiencies in control accuracy and response speed, and is difficult to dynamically adjust according to real-time conditions.

[0004] Therefore, a dynamic regulating valve capable of adapting to high-temperature and high-pressure environment, having high regulating accuracy and reliable sealing performance is needed to meet the demand of modern waste heat boiler system for accurate control of air intake. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of multistage dynamic regulating valve of generator set coupling type waste heat boiler, to solve the problems of low regulating accuracy and difficult dynamic adjustment of regulating valve in prior art.To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0006] A kind of multistage dynamic regulating valve of generator set coupling type waste heat boiler, including valve body, valve cover, valve rod and control assembly, the valve body is equipped with containing cavity, the containing cavity is equipped with multistage valve piece group;The multistage valve piece group is stacked and combined by several valve pieces, and each valve piece is provided with spiral flow channel;

[0007] The outer side of the multistage valve piece group and the inner wall of the containing cavity are spaced apart and form a buffer chamber, and the valve rod passage is provided at the center position of the multistage valve piece group, and the spiral flow channel is connected to the buffer chamber and the valve rod passage at both ends, respectively;

[0008] The valve body is also provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the buffer chamber, and the bottom of the valve rod passage is communicated with the air outlet pipe;

[0009] The valve rod moves along the valve rod passage under the action of the control assembly, and the number of exposed spiral flow channels in the valve rod passage is controlled to control the flow of the regulating valve.

[0010] As an improvement, the valve piece is provided with an inclined part, the top of the inclined part is provided with an insertion part, and the bottom is provided with a groove matched with the insertion part of the adjacent valve piece.

[0011] The spiral flow channel is arranged on the surface of the inclined part.

[0012] As an improvement, the bottom of the accommodating cavity is provided with a placing groove, the lowest valve piece is arranged in the placing groove, and the remaining valve pieces are stacked in sequence to form a multi-stage valve piece group.

[0013] The bottom of the valve cover is provided with a top block, and after the valve cover is connected with the valve body, the multi-stage valve piece group is pressed and fixed through the top block.

[0014] As an improvement, the valve rod is arranged in the valve cover, and the control assembly is arranged at the top of the valve cover.

[0015] As an improvement, the inlet pipe is arranged in a staggered manner with the center line of the valve body, so that the gas can rotate along the side wall of the accommodating cavity after entering the accommodating cavity.

[0016] As an improvement, the control assembly is an electric drive control component, which comprises a motor, an electric push rod, a support frame, a sensor and a controller.

[0017] The motor is arranged above the valve cover through the support frame, the electric push rod is connected to the motor and the valve rod at two ends respectively, and the sensor is arranged at the outlet pipe for monitoring the pressure and flow of the outlet pipe.

[0018] The signal monitored by the sensor is transmitted to the controller, the controller issues an instruction, and the lifting height of the valve rod is controlled through the motor and the electric push rod.

[0019] As an improvement, the rotation direction of the gas in the accommodating cavity is the same as the direction of the spiral flow channel.

[0020] The utility model has the advantages that:

[0021] 1. The utility model adopts a multi-stage valve piece group design, and the number of exposed spiral flow channels can be accurately controlled by controlling the dynamic movement of the valve rod, so that the gas flow can be accurately adjusted. In addition, the multi-stage valve piece group structure of the utility model has good stability, and can adapt to not only steam but also various other media.

[0022] 2. The utility model optimizes the gas flow path, and the inlet pipe and the valve body center line are designed in a staggered manner, which can guide the gas to rotate along the side wall of the accommodating cavity, consistent with the direction of the spiral flow channel, which can effectively reduce the direct impact of the gas flow on the valve piece and the accommodating cavity, reduce vibration, ensure the smooth rotation of the gas, and improve the running stability of the regulating valve. At the same time, the spiral flow channel can move downward with the gas flow, which helps the gas flow to pass through the outlet pipe smoothly, and enhances the fluid dynamics performance of the regulating valve.

[0023] 3.The control assembly is provided with a sensor and a controller.The sensor monitors the pressure and flow rate of the outlet pipe in real time, and transmits data to the controller.After analysis and processing, the controller accurately controls the motor and the electric push rod to run, drives the valve rod to lift, realizes the dynamic adjustment of the regulating valve flow, and ensures that the system is always in the best operating state. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural diagram of a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0025] Figure 2 It is an internal structure diagram of a valve body in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0026] Figure 3 It is a structural diagram of a valve piece in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0027] Figure 4 It is a side view of a valve piece in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0028] Figure 5 It is a structural diagram of a bottom of a valve piece in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0029] Figure 6 It is a structural diagram of a valve body in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0030] Figure 7 It is a schematic diagram of internal gas flow of a valve body in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0031] Figure 8 It is a structural diagram of a control assembly in a multi-stage dynamic regulating valve of a generator set coupled type waste heat boiler in embodiment 1.

[0032] Indicated in the figure:

[0033] 1-valve body, 2-valve cover, 3-valve rod, 4-control assembly, 5-containing cavity, 6-multi-stage valve piece group, 7-valve piece, 8-spiral flow channel, 9-buffer chamber, 10-valve rod passage, 11-inlet pipe, 12-outlet pipe, 13-inclined part, 14-insertion part, 15-groove, 16-placing groove, 17-top block, 18-motor, 19-electric push rod, 20-supporting frame. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0035] Embodiment 1

[0036] The embodiment discloses a multistage dynamic regulating valve of a generator set coupling type waste heat boiler, which comprises a valve body 1, a valve cover 2, a valve rod 3 and a control assembly 4. The valve body 1 is provided with a containing cavity 5, and the containing cavity 5 is provided with a multistage valve piece group 6; the multistage valve piece group 6 is composed of a plurality of valve pieces 7 stacked and combined, and each valve piece 7 is provided with a spiral flow channel 8.

[0037] The multistage valve piece group 6 is arranged at intervals between the outer side and the inner wall of the containing cavity 5 and forms a buffer chamber 9, and the multistage valve piece group 6 is provided with a valve rod passage 10 at the center position, and the two ends of the spiral flow channel 8 are connected with the buffer chamber 9 and the valve rod passage 10 respectively.

[0038] The valve body 1 is further provided with an air inlet pipe 11 and an air outlet pipe 12, the air inlet pipe 11 is communicated with the buffer chamber 9, and the bottom of the valve rod passage 10 is communicated with the air outlet pipe 12.

[0039] The valve rod 3 moves up and down along the valve rod passage 10 under the action of the control assembly 4, and in the moving process, the valve rod 3 blocks the opening of the spiral flow channel 8 in the valve rod passage 10. Therefore, the number of exposed spiral flow channels 8 can be controlled by controlling the position of the valve rod 3 in the valve rod passage 10, and then the flow of the regulating valve can be controlled.

[0040] The valve piece 7 is provided with an inclined part 13, the top of the inclined part 13 is provided with an insertion part 14, and the bottom is provided with a groove 15 matched with the insertion part of the adjacent valve piece; the spiral flow channel 8 is arranged on the surface of the inclined part 13.

[0041] The bottom of the containing cavity 5 is provided with a placing groove 16, the valve piece 7 at the lowermost position is arranged in the placing groove 16, and the remaining valve pieces 7 are stacked in sequence and form the multistage valve piece group 6; the bottom of the valve cover 2 is provided with a top block 17, and after the valve cover 2 is connected with the valve body 1, the multistage valve piece group 6 is pressed and fixed through the top block 17.

[0042] The valve rod 3 is arranged in the valve cover 2, and the control assembly 4 is arranged at the top of the valve cover 2. The air inlet pipe 11 is arranged in a position deviated from the center line of the valve body 1, so that the gas can rotate along the side wall of the containing cavity 5 after entering the containing cavity 5. The rotating direction of the gas in the containing cavity 5 is the same as the direction of the spiral flow channel 8.

[0043] When the gas enters from the inlet pipe 11, due to the misalignment of the inlet pipe 11 and the valve body 1, the entering gas will not directly touch the multi-stage valve plate group 6 or the inside of the containing cavity 5, but rotate in the buffer chamber 9, thereby avoiding the vibration caused by the direct impact of the gas flow. The spiral flow channel 8 on the valve plate 7 is in the same direction as the rotation direction of the gas, so that the gas can smoothly enter the valve rod channel 10 along the spiral flow channel 8. The spiral flow channel 8 is arranged on the inclined part 13, which can give the gas flow a downward velocity component during the movement of the gas flow, so that the gas flow can smoothly pass downward through the outlet pipe 12.

[0044] The control assembly 4 is an electric drive control component, which comprises a motor 18, an electric push rod 19, a support frame 20, a sensor and a controller. The motor 18 is arranged above the valve cover 2 through the support frame 20, the electric push rod 19 is connected to the motor 18 and the valve rod 3 at two ends respectively, and the sensor is arranged at the outlet pipe 12 for monitoring the pressure and flow of the outlet pipe 12. The signal monitored by the sensor is transmitted to the controller, the controller issues an instruction, and the lifting height of the valve rod is controlled through the motor and the electric push rod.

[0045] The valve rod 3, the multi-stage valve plate group 6 and the valve cover 2 are connected by the hot assembly process of the silicon nitride ceramic valve core and the metal base, so as to ensure the stability of the high-pressure dynamic sealing of the valve rod 3. The valve body 1 and the valve cover 2 are sealed by a sealing ring.

[0046] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multi-stage dynamic regulating valve of a generator set coupled waste heat boiler comprising a valve body, a valve cover, a valve stem and a control assembly, characterized in that, The valve body is provided with a containing cavity, and the containing cavity is provided with a multi-stage valve plate group; the multi-stage valve plate group is composed of a plurality of valve plates stacked and combined, and each valve plate is provided with a spiral flow channel; The outer side of the multi-stage valve plate group is spaced apart from the inner wall of the containing cavity and forms a buffer chamber, and the multi-stage valve plate group is provided with a valve rod passage at the center position; the two ends of the spiral flow channel are connected with the buffer chamber and the valve rod passage, respectively; The valve body is further provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the buffer chamber, and the bottom of the valve rod passage is communicated with the air outlet pipe; The valve rod moves along the valve rod passage under the action of the control assembly, and the number of exposed spiral flow channels in the valve rod passage is controlled to control the flow of the regulating valve.

2. A multi-stage dynamic governing valve for a waste heat boiler coupled to a generator set according to claim 1, wherein The valve plate is provided with an inclined part, the top of the inclined part is provided with an insertion part, and the bottom is provided with a groove matched with the insertion part of the adjacent valve plate; The spiral flow channel is arranged on the surface of the inclined part.

3. A multi-stage dynamic governing valve for a waste heat boiler of a generator set coupling type according to claim 2, characterized in that, The bottom of the containing cavity is provided with a placing groove, and the lowest valve plate is arranged in the placing groove, and the remaining valve plates are stacked in sequence to form a multi-stage valve plate group; The bottom of the valve cover is provided with a top block, and after the valve cover is connected with the valve body, the multi-stage valve plate group is pressed and fixed by the top block.

4. The multi-stage dynamic governing valve of a waste heat boiler coupled to a generator set according to claim 1, wherein The valve rod is arranged on the valve cover, and the control assembly is arranged on the top of the valve cover.

5. The multi-stage dynamic governing valve of a waste heat boiler coupled to a generator set according to claim 1, wherein The air inlet pipe is arranged in a position deviated from the center line of the valve body, so that the gas entering the containing cavity can rotate along the side wall of the containing cavity.

6. A multi-stage dynamic governing valve for a waste heat boiler of a generator set coupling type according to claim 1, characterized in that, The control assembly is an electric drive control member, which includes a motor, an electric push rod, a support frame, a sensor and a controller; The motor is arranged above the valve cover through the support frame, the electric push rod is connected with the motor and the valve rod at two ends, respectively, and the sensor is arranged at the air outlet pipe to monitor the pressure and flow of the air outlet pipe; The signals monitored by the sensor are transmitted to the controller, the controller issues instructions, and the lifting height of the valve rod is controlled through the motor and the electric push rod.

7. A multi-stage dynamic governing valve for a waste heat boiler of a generator set coupling type according to claim 5, characterized in that, The rotation direction of the gas in the containing cavity is the same as the direction of the spiral flow channel.

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