Intelligent cooling blind plate valve for chemical industry

Abstract

The utility model belongs to the technical field of blind plate valves, and relates to an intelligent cooling blind plate valve for chemical industry, which comprises a control system, a fixed valve body and a movable valve body, cooling jackets are arranged on the fixed valve body and the movable valve body, a steam inlet pipe and a steam outlet pipe are connected onto the cooling jackets, the steam outlet pipe is connected with a recycling pool, the steam inlet pipe is connected with a steam supply pipe, and the steam supply pipe is connected with a steam outlet pipe. The steam supply pipe is connected with the steam inlet pipe through a control valve, the control valve is further connected with a descaling assembly, and the control system is connected with the control valve and the descaling assembly. The service life of the high-temperature sealing ring can be prolonged, cooling is achieved through vaporization phase change of wet steam, the situation that stability of equipment is affected by sudden change of internal pressure caused by instant evaporation of cold water is avoided, meanwhile, an intelligent descaling system is additionally arranged, smoothness in a cooling channel can be guaranteed, and the situation that circulation efficiency is affected due to blockage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of blind plate valves, and relates to an intelligent cooling blind plate valve for chemical industry. Background Art

[0002] A blind plate valve is a gate valve that cuts off gas by hand, electric, pneumatic or hydraulic means. Generally, it is divided into electric blind plate valve, hydraulic blind plate valve, closed plug valve and electric open blind plate valve. During use, the flowing temperature of the material in the valve body is very high, and long-term use will damage its sealing structure, thus affecting the sealing effect and causing leakage. The existing Chinese invention patent with the publication number of CN108644467A, a high-temperature water-cooled blind plate valve and a water-cooling mechanism, includes a square steel pipe. The square steel pipe is arranged in a circular ring shape and is connected end to end. A baffle plate is arranged in the square steel pipe to make the cooling water flow in one direction. An inlet steam pipe is connected to one end of the square steel pipe close to the baffle plate, and the inlet steam pipe is used for introducing cooling water. An outlet steam pipe is connected to the other end of the square steel pipe close to the baffle plate, and the outlet steam pipe is used for discharging cooling water.

[0003] The existing technology has the following technical defects:

[0004] The above technical solution is applicable to the cooling of ordinary pipelines. However, in the chemical industry, the temperature flowing in the pipeline reaches thousands of degrees. As soon as the ordinary cooling water enters for cooling, it will overheat and boil, resulting in unstable internal pressure, easy damage, and unsatisfactory cooling effect. Moreover, long-term use will cause scaling in the cooling water pipeline, further affecting the flow of cooling water and being unfavorable for cooling. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide an intelligent cooling blind plate valve for chemical industry.

[0006] The intelligent cooling blind plate valve for chemical industry described in the utility model includes a control system, a fixed valve body and a movable valve body. Cooling jackets are arranged on both the fixed valve body and the movable valve body. An inlet steam pipe and an outlet steam pipe are connected to the cooling jacket. The outlet steam pipe is connected to a recovery tank, and the inlet steam pipe is connected to a steam supply pipe. A control valve is connected between the steam supply pipe and the inlet steam pipe. A descaling component is also connected to the control valve. The control system is connected to the control valve and the descaling component.

[0007] Working Process or Principle:

[0008] During operation, the control system monitors the operating parameters of the blind plate valve in the through-hole state. The control system makes the control valve connect the inlet steam pipe and the steam supply pipe. After the wet steam enters the cooling channel in the cooling jacket through the inlet steam pipe for heat exchange and cooling, it flows into the recovery tank through the outlet steam pipe to achieve the cooling of the blind plate valve.

[0009] A flow sensor is provided at the steam inlet pipe, and the flow sensor is connected to the control system. The change in the inflow and outflow can be monitored through the flow sensor to determine whether there is fouling and blockage by impurities.

[0010] The steam inlet pipe is connected to the control valve through a heat tracing flange.

[0011] Both the steam inlet pipe and the steam outlet pipe are metal hoses.

[0012] The descaling assembly includes a descaling pipe connected to the control valve. The descaling pipe is connected to a descaling liquid tank, and the descaling liquid tank is connected to the control system. Wet steam is steam in a state where gas and tiny water droplets coexist. After long-term use, the tiny water droplets absorb heat and evaporate, resulting in fouling and the formation of impurities accumulating in the cooling channel. Descaling and cleaning are achieved by flushing with acidic descaling liquid.

[0013] A cleaning pipe is connected to the control valve. When pickling with descaling liquid, the cooling channel inside the jacket is flushed through the cleaning pipe to prevent the descaling liquid from staying for a long time and damaging the inner wall of the cooling channel.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] The present utility model can improve the service life of the high-temperature sealing ring, achieve temperature reduction through the vaporization phase change of wet steam, avoid the sudden change of internal pressure caused by the instantaneous evaporation of cold water entering, thus affecting the stability of the equipment. At the same time, an intelligent descaling system is added to ensure the smoothness of the cooling channel, and blockage will not occur, thus affecting the flow efficiency. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model,

[0017] Figure 2 is a side view of an embodiment of the present utility model,

[0018] Figure 3 is the present utility model Figure 2 an enlarged cross-sectional view of part A in,

[0019] Figure 4 is a schematic structural diagram of the descaling assembly in an embodiment of the present utility model.

[0020] In the figure: 1, fixed valve body; 2, steam inlet pipe; 3, movable valve body; 4, heat tracing flange; 5, cooling jacket; 6, cooling channel; 7, steam supply pipe; 8, control valve; 9, cleaning pipe; 10, descaling pipe; 11, descaling liquid tank. Detailed Description of the Embodiment

[0021] Embodiment 1

[0022] As Figures 1 to 4 shown, the intelligent cooling blind plate valve for chemical industry of the present utility model includes a control system, a fixed valve body 1 and a movable valve body 3. Cooling jackets 5 are provided on both the fixed valve body 1 and the movable valve body 3. An inlet steam pipe 2 and an outlet steam pipe are connected to the cooling jacket 5. The outlet steam pipe is connected to a recovery tank. The inlet steam pipe 2 is connected to a steam supply pipe 7. The steam supply pipe 7 is connected to the inlet steam pipe 2 through a control valve 8. A descaling component is also connected to the control valve 8. The control system is connected to the control valve 8 and the descaling component; a flow sensor is provided at the inlet steam pipe 2. The flow sensor is connected to the control system. The change of the inflow and outflow can be monitored through the flow sensor, so as to judge whether there is blockage of scaling impurities; the inlet steam pipe 2 is connected to the control valve 8 through a tracing flange 4; both the inlet steam pipe 2 and the outlet steam pipe are metal hoses; the descaling component includes a descaling pipe 10 connected to the control valve 8. The descaling pipe 10 is connected to a descaling liquid tank 11. The descaling liquid tank 11 is connected to the control system. Wet steam is steam in a state of coexistence of gas and tiny water droplets. After long-term use, the tiny water droplets absorb heat and evaporate, thus forming scale and accumulating impurities in the cooling channel 6. Descaling and cleaning are realized by flushing with acidic descaling liquid; a cleaning pipe 9 is connected to the control valve 8. After using the descaling liquid acid, the inner cooling channel 6 of the jacket is flushed through the cleaning pipe 9, so as to avoid damage to the inner wall of the cooling channel 6 caused by the long-term stay of the descaling liquid.

[0023] Working process or working principle:

[0024] During operation, the control system monitors the operating parameters of the blind plate valve in the through-hole state. The control system makes the control valve 8 connect the inlet steam pipe 2 and the steam supply pipe 7. After the wet steam enters the cooling channel 6 in the cooling jacket 5 through the inlet steam pipe 2 for heat exchange and temperature reduction, it flows into the recovery tank from the outlet steam pipe to realize the temperature reduction of the blind plate valve. A flow sensor is provided at the inlet steam pipe 2. The flow sensor is connected to the control system. The change of the inflow and outflow can be monitored through the flow sensor, so as to judge whether there is blockage of scaling impurities. When the control system detects that the flow rate of the inlet steam pipe 2 reaches the preset parameter, an alarm is given. After confirmation by personnel, descaling operation is carried out. The steam supply pipe 7 is disconnected from the inlet steam pipe 2 through the control valve 8 and the descaling pipe 10 is connected to the inlet steam pipe 2. The descaling liquid is pumped into the cooling channel 6 through the power component in the descaling liquid tank 11 for pickling and descaling. Then the control valve 8 connects the cleaning pipe 9 and the inlet steam pipe 2. The inner cooling channel 6 of the jacket is flushed through the cleaning pipe 9, so as to avoid damage to the inner wall of the cooling channel 6 caused by the long-term stay of the descaling liquid.

[0025] The utility model can improve the service life of the high-temperature sealing ring, realize temperature reduction through the vaporization phase change of wet steam, avoid the sudden change of internal pressure caused by the instantaneous evaporation of cold water entering, so as to affect the stability of the equipment. At the same time, an intelligent descaling system is added to ensure the smoothness of the cooling channel 6 and prevent blockage from affecting the flow efficiency.

[0026] In the utility model, the description of the direction and relative position relationship of the structure, such as the description of front, back, left, right, up and down, does not constitute a limitation to the utility model, but is only for the convenience of description.

Claims

1. An intelligent cooling blind valve for chemical industry, characterized in that: It includes a control system, a fixed valve body (1) and a movable valve body (3). Cooling jackets (5) are provided on both the fixed valve body (1) and the movable valve body (3). An inlet steam pipe (2) and an outlet steam pipe are connected to the cooling jacket (5). The outlet steam pipe is connected to a recovery tank. The inlet steam pipe (2) is connected to a steam supply pipe (7). The steam supply pipe (7) is connected to the inlet steam pipe (2) through a control valve (8). A descaling component is also connected to the control valve (8). The control system is connected to the control valve (8) and the descaling component.

2. The intelligent cooling blind valve for chemical industry according to claim 1, characterized in that: A flow sensor is provided at the inlet steam pipe (2), and the flow sensor is connected to the control system.

3. The intelligent cooling blind valve for chemical industry according to claim 2, wherein: The inlet steam pipe (2) is connected to the control valve (8) through a tracing flange (4).

4. The intelligent cooling blind valve for chemical industry according to claim 3, wherein: Both the inlet steam pipe (2) and the outlet steam pipe are metal hoses.

5. The intelligent cooling blind valve for chemical industry according to any one of claims 1-4, characterized in that: The descaling component includes a descaling pipe (10) connected to the control valve (8). The descaling pipe (10) is connected to a descaling liquid tank (11), and the descaling liquid tank (11) is connected to the control system.

6. The intelligent cooling blind valve for chemical industry according to claim 5, wherein: A cleaning pipe (9) is connected to the control valve (8).

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