Three-way reversing temperature adjusting structure

Abstract

The utility model discloses a three-way reversing temperature adjusting structure which comprises a valve plate A and a valve plate B which are respectively provided with an air cylinder, the valve plate A, the valve plate B and a reversing device shell form a channel A, a channel B and a channel C, and a flow guide distribution device is arranged between the valve plate A and the valve plate B. According to the utility model, the smoke exhaust temperatures of different groups of heat accumulating type combustion devices in the same control area can be effectively adjusted, so that the aim that the smoke exhaust temperatures of the different groups of heat accumulating type combustion devices in the same control area are basically consistent is fulfilled.

Description

Technical Field

[0001] The utility model relates to the field of temperature regulation, in particular to a three-way reversing temperature regulation structure. Background Art

[0002] In the regenerative combustion system, a group of regenerative combustion devices is controlled by a set of reversing devices, and a control area is often composed of several groups of reversing devices, and the preheated medium flow and flue gas flow in this control area are respectively controlled by only one flow regulating valve. Due to the difference in equipment manufacturing and the difference in different positions in the pipeline system, the preheating medium flow and flue gas flow distribution of each group of regenerative combustion devices cannot be the same, which results in different exhaust temperatures of different groups of regenerative combustion devices.

[0003] If the opening of the flue gas flow control valve is controlled by the maximum exhaust temperature of the regenerative combustion device in the control area, the exhaust temperature of some regenerative combustion devices will be too low, which may cause condensation corrosion inside the pipeline and seriously affect the life of the local pipeline. If the opening of the flue gas flow control valve is controlled by the average exhaust temperature of the regenerative combustion device in the control area, the exhaust temperature of some regenerative combustion devices will be too high, which may cause damage to the seal of the reversing device and seriously affect the life of the reversing device.

[0004] However, when the exhaust temperatures of different groups of regenerative combustion devices in a control area differ greatly, there is no means to effectively adjust them. Therefore, it is necessary to develop a three-way reversing temperature adjustment structure to effectively adjust the exhaust temperatures of different groups of regenerative combustion devices in the same control area. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a three-way reversing temperature regulating structure, which can effectively adjust the exhaust temperature of different groups of heat storage combustion devices in the same control area, so as to achieve the purpose of basically consistent exhaust temperature of different groups of heat storage combustion devices in the same control area.

[0006] Technical solution: The utility model is a three-way reversing temperature regulating structure, which is characterized by comprising a valve plate A and a valve plate B respectively provided with a cylinder, the valve plate A, the valve plate B and the reversing device housing form three channels A, B and C, and a flow guide distribution device is provided between the valve plate A and the valve plate B.

[0007] Wherein, the cylinder is connected to a control solenoid valve.

[0008] Wherein, the diversion distribution device is provided with an adjustment rod, a diversion distribution plate, a locking device and a scale plate.

[0009] Wherein, the regulating rod and the guide distribution plate are made of Q235 material.

[0010] Wherein, the surface of the adjusting rod is provided with a chrome-plated layer.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model can effectively adjust the exhaust temperature of different groups of thermal storage combustion devices in the same control area, so as to achieve the purpose of basically consistent exhaust temperature of different groups of thermal storage combustion devices in the same control area.

[0012] The utility model discloses a three-way reversing temperature regulating structure, in which an adjustable flow guide distribution device is arranged in the common channel area of ​​the preheated medium and the flue gas of the heat storage type reversing device, and the flow rates of the two media are affected by changing the flow cross-sectional areas in the two flow path directions of the two media in the common channel area, so that the flue gas temperature changes, and finally the exhaust temperatures of different groups of heat storage type combustion devices in the same control area are basically consistent.

[0013] When the exhaust temperatures of different groups of regenerative combustion devices in the same control area are basically the same, it can better extend the life of pipelines and equipment, improve combustion efficiency, and also play a certain role in energy conservation and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 The use state of the utility model Figure 1 ;

[0017] Figure 4 The use state of the utility model Figure 2 ;

[0018] In the figure, 1 is a cylinder; 2 is a valve plate A; 3 is a valve plate B; 4 is a reversing device housing; and 5 is a flow guide distribution device. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The three-way reversing temperature regulating structure of the utility model comprises a valve plate A2 and a valve plate B3 respectively provided with a cylinder 1, the valve plate A2, the valve plate B3 and the reversing device housing 4 form three channels A, B and C, and a flow guide distribution device 5 is provided between the valve plate A2 and the valve plate B3. Among them, the cylinder 1 is connected to the control solenoid valve. The flow guide distribution device 5 is provided with an adjusting rod, a flow guide distribution plate, a locking device and a scale plate. The adjusting rod and the flow guide distribution plate are made of Q235 material. The surface of the adjusting rod is provided with a chrome plating layer.

[0021] like Figure 1 and2 , cylinder 1 is controlled by a solenoid valve. When the cylinder solenoid valve corresponding to valve plate A2 loses power, it is driven by compressed air, valve plate A falls, and channel A is cut off. Similarly, valve plate B3 can cut off channel B. The reversing device housing 4 is composed of three channels A, B, and C respectively. Through the action of valve plates A and B, the functions of AC connection and BC connection are achieved, thereby playing a reversing function. The flow guide distribution device 5 is provided with an adjusting rod, a flow guide distribution plate, a locking device and a scale plate, which play the role of flow guide distribution and adjustment. The adjusting rod and the flow guide distribution plate are made of Q235 material, and the surface of the adjusting rod is chrome-plated to ensure surface finish, flexible action and good sealing performance. The scale plate indicates the direction of increase or decrease in the exhaust temperature, which is convenient for on-site operation.

[0022] like Figure 3 and 4 When in use, when the flow guide distribution device 5 is biased toward the B side, the valve plate A2 falls, the valve plate B3 rises, the AC channel is cut off, and the smoke enters the B channel from C. At this time, the flow guide distribution device 5 makes the cross-sectional area of ​​the BC channel smaller, reducing the flow of the smoke; after a fixed period, the valve plate A2 rises, the valve plate B3 falls, the BC channel is cut off, and the preheated medium enters the C channel from A. At this time, the flow guide distribution device 5 makes the cross-sectional area of ​​the AC channel larger, increasing the flow of the preheated medium; after several fixed periods, the flow of the preheated medium increases relatively, while the relative flow of the smoke decreases, causing the temperature of the smoke to drop, and finally the exhaust temperature will drop, otherwise, the exhaust temperature will rise.

[0023] Example:

[0024] The reversing valve was remodeled on site. After the purging and venting was completed, holes were opened at the corresponding parts of the reversing valve, the installation base was welded, and the diversion distribution device locking device and scale plate were assembled. The valve rotary sealing device was used to solve the sealing problem caused by the diversion distribution device and the external transmission shaft passing through the reversing valve, and the action was flexible, and the diversion distribution device could be locked at any scale. After the transformation was completed, the pressure test was carried out at 1.5 times the working pressure. When there was no leakage, it indicated that the valve body seal was qualified and debugging work could be carried out. Observe the changes in the exhaust temperature of the corresponding burner of the reversing valve, rotate the diversion meter to the corresponding direction on the scale plate according to the trend, and finally adjust the exhaust temperature of each reversing valve to basically the same, completing the transformation and debugging work.

[0025] The utility model utilizes the asymmetric distribution effect of the flow guide distribution device to cause the flow of the two media to change in opposite directions, thereby causing the change of the exhaust temperature. The structure is simple, easy to maintain, and convenient for personal operation. The function of adjustable exhaust temperature of a single group of regenerative combustion devices is realized, so that the exhaust temperatures of different groups of regenerative combustion devices in the same control area can be adjusted to be basically consistent, which can better extend the life of pipelines and equipment, improve combustion efficiency, and also play a certain role in energy saving and consumption reduction. The temperature difference between different groups of exhaust temperatures of regenerative combustion devices is controlled within ±10°C, effectively extending the life of pipelines and equipment by more than 2 years, increasing the average temperature of the preheating medium by more than 5°C, and reducing the fuel consumption of the heating furnace by more than 5%.

Claims

1. A three-way reversing temperature regulating structure, characterized in that: The invention comprises a valve plate A (2) and a valve plate B (3) each provided with a cylinder (1); the valve plate A (2), the valve plate B (3) and a reversing device housing (4) form three channels A, B and C; a flow guide distribution device (5) is provided between the valve plate A (2) and the valve plate B (3); the cylinder (1) is connected to a control electromagnetic valve; the flow guide distribution device (5) is provided with an adjusting rod, a flow guide distribution plate, a locking device and a scale plate; the adjusting rod and the flow guide distribution plate are made of Q235 material; and the surface of the adjusting rod is provided with a chrome-plated layer.

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