CN210106740U - A manual fully insulated jacketed ball valve - Google Patents

Abstract

The utility model proposes a manual self-integrated full thermal insulation jacketed ball valve, which comprises a valve body, a valve stem, a valve seat, a valve core and a hand wheel, an air filter pressure reducing valve, a solenoid valve and a pneumatic actuator, the periphery of the valve body and the valve body. The connecting end of the rod is surrounded by a thermal insulation jacket which is fixed on the valve body. The thermal insulation jacket and the outer surface of the valve body form a thermal insulation cavity. The thermal insulation jacket is provided with a heat source inlet and a heat source outlet, and the lower part of the thermal insulation jacket is provided with a sewage outlet. , The upper end of the valve stem is connected with a handwheel, a solenoid valve and a pneumatic actuator. The handwheel can manually adjust the opening of the valve stem. The solenoid valve is controlled by the central control room to control the valve to open or close, and an air filter pressure relief valve is connected externally. , The hand-integrated fully insulated jacketed ball valve is provided with a ring-shaped insulation jacket and is integrally connected with the valve body. The ball valve flow channel is continuously insulated through the heat source inlet and the heat source outlet, and the fully insulated jacketed ball valve is adjusted manually with the handwheel. It can carry out emergency treatment under special working conditions, and it is easy to use by hand.

Description

A manual fully insulated jacketed ball valve

technical field

The utility model relates to the technical field of valves, in particular to a manual-integrated full-insulation jacketed ball valve.

Background technique

In the modern industrial production process, it is often necessary to transport high-viscosity media that are easy to solidify at room temperature, such as molten urea. In order to transport such media, it is necessary to increase the temperature of the pipeline, but with the increase of use time, the damage of the media to the valve internals increases. In order not to affect the safety and reduce the impact on production, the valve needs regular maintenance. The existing thermal insulation jacketed ball valve has good thermal insulation and cold insulation properties, and the diameter of the valve is consistent with the diameter of the pipe, and at the same time, it can effectively reduce the heat loss of the medium in the pipeline, and is widely used in petroleum, chemical, metallurgy, pharmaceutical, etc. In the system, only the insulation jacket needs to be removed during maintenance, or the whole valve needs to be replaced, which greatly reduces the economic cost of pipeline insulation.

However, while protecting the valve body, the existing heat preservation jacketed ball valve does not take heat preservation measures for the sealing parts of the valve core and the valve stem. Fatigue damage caused by alternating high and low temperature, and maintenance is extremely inconvenient, so the ball valve can only be replaced with a new one, which increases the cost.

SUMMARY OF THE INVENTION

The design purpose of the utility model is: in view of the wide variety of existing thermal insulation jacketed ball valves, but the problem of improper thermal insulation treatment at the connection of the valve stem, it is proposed to design a manual self-integrated full thermal insulation jacketed ball valve. The outer layer is provided with a thermal insulation chamber, which provides thermal insulation protection for the entire ball valve, and has a simple structure, small maintenance workload and low equipment cost.

To achieve the above object, the utility model adopts the following technical solutions:

A hand-integrated fully insulated jacketed ball valve, comprising a valve body, a valve stem, a valve seat, a valve core, a handwheel, an air filter pressure reducing valve, a solenoid valve and a pneumatic actuator,

The outer periphery of the valve body and the connecting end of the valve stem are surrounded by a thermal insulation jacket and fixed on the valve body, the thermal insulation jacket and the outer surface of the valve body form a thermal insulation cavity, and a heat source is arranged on the thermal insulation jacket The inlet and the outlet of the heat source, the lower part of the thermal insulation jacket is provided with a sewage outlet, including a sewage discharge passage fixed on the thermal insulation jacket, the sewage discharge passage communicates with the thermal insulation cavity, and the outlet of the sewage discharge passage is provided with closed assembly,

The upper end of the valve stem is connected with a handwheel, a solenoid valve and the pneumatic actuator. The handwheel can manually adjust the opening of the valve stem through a worm gear structure. The solenoid valve is controlled by a signal from the central control room. On or off, there is an air filter pressure reducing valve connected externally,

The inlet side of the valve body is provided with an installation interface for installing or repairing the valve core. The installation interface is isolated from the insulation cavity and does not interfere with each other. The installation interface is provided with an internal thread and is connected to the end. The outer thread provided on the outer periphery of the cover is sealed and connected.

Further, the pneumatic actuator uses its elastic diaphragm to convert the air pressure input by the air compressor into a thrust to the push rod, and the push rod causes the valve core to have a corresponding displacement to change the opening of the valve to realize self-control adjustment.

Further, a sealing ring is provided at the contact surface of the installation interface and the valve body.

Further, the heat source inlet is directly connected to the position of the connecting end of the valve stem, so as to ensure the heat preservation effect on the valve stem control part.

Further, a stuffing box is provided at the position where the valve stem and the upper port of the valve body cooperate.

Further, the bottom of the pneumatic actuator is provided with a bracket, and the bottom of the bracket is provided with a circular hole, which is locked with the outer periphery of the stuffing box by screws, thereby fixing the pneumatic actuator.

Implementing the manual-integrated fully insulated jacketed ball valve of the present utility model has the following beneficial effects:

1. The manual-integrated full-insulation jacketed ball valve is provided with a ring-shaped insulation jacket and is integrally connected with the valve body. The ball valve flow passage is continuously insulated through the heat source inlet and the heat source outlet, and can be repaired and replaced without dismantling the insulation chamber. Ball valve internals simplify the maintenance process and save time and effort;

2. The thermal insulation jacket is set on the outer surface of the valve, so it is not necessary to remove the thermal insulation cavity or replace the whole valve when repairing the valve core, which reduces the maintenance time and maintenance cost;

3. With the manual rotation of the hand wheel to adjust the full insulation jacketed ball valve, emergency treatment can be carried out under special working conditions, and the manual integration is convenient for use;

4. The installation interface is provided to avoid the need to disassemble the insulation jacket when the valve core is repaired, which improves the maintenance speed and reduces the maintenance cost.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present utility model more clearly, the accompanying drawings required to be used in the description of the embodiments will be briefly introduced below.

Fig. 1 is the structural representation of the manual self-integrated fully insulated jacketed ball valve of the present embodiment;

Fig. 2 is a cross-sectional view of the valve body according to this embodiment

3 is a cross-sectional view of the structure of the thermal insulation jacket according to the present embodiment;

Among them, 1- valve body, 2- valve seat, 3- valve core, 4- valve stem, 5- stuffing box, 6- bracket, 7- connecting shaft, 8- pneumatic actuator, 9- solenoid valve, 10- seal Ring, 11-end cover, 12-steam flange, 13-insulation cavity, 14-insulation jacket, 15-sewage outlet, 16-stem connection end, 17-heat source inlet, 18-heat source outlet, 19-handwheel , 20-air filter pressure reducing valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in Figures 1-3, the utility model proposes a manual-integrated fully insulated jacketed ball valve, comprising a valve body 1, a valve stem 4, a valve seat 2, a valve core 3, a hand wheel 19, an air filter pressure reducing valve 20. Solenoid valve 9 and pneumatic actuator 8.

Specifically, the outer periphery of the valve body 1 and the connecting end 16 of the valve stem are surrounded by and fixed on the valve body 1 with a thermal insulation jacket 14 , and the thermal insulation jacket 14 and the outer surface of the valve body 1 form a thermal insulation cavity 13. The thermal insulation jacket 14 is provided with a heat source inlet 17 and a heat source outlet 18, and the lower part of the thermal insulation jacket 14 is provided with a sewage outlet 15, including a sewage discharge channel fixed on the thermal insulation jacket. The passage communicates with the heat preservation cavity 13, and the outlet of the sewage discharge passage is provided with a sealing component,

The upper end of the valve stem 4 is connected with a hand wheel 19, a solenoid valve 9 and the pneumatic actuator 8. The hand wheel 19 can manually adjust the opening of the valve stem 4 through a worm gear structure. The solenoid valve 9 is composed of The central control room sends a signal to control the valve to open or close, and an air filter pressure reducing valve 20 is connected externally.

The inlet side of the valve body 1 is provided with an installation interface for installing or repairing the valve core. The installation interface is isolated from the heat preservation cavity 13 and does not interfere with each other. The installation interface is provided with internal threads and is It is connected with the external thread provided on the outer periphery of the end cover 11 in a sealing fit.

A further embodiment is that the pneumatic actuator 8 uses its elastic diaphragm to convert the air pressure input by the air compressor into a thrust to the push rod, and the valve core 3 produces a corresponding displacement through the push rod to change the opening of the valve, Realize self-control adjustment.

In a further embodiment, a sealing ring 10 is provided at the contact surface of the installation interface and the valve body.

In a further embodiment, the heat source inlet 17 is directly connected to the position of the connecting end 16 of the valve stem, so as to ensure the heat preservation effect on the control part of the valve stem.

In a further embodiment, a stuffing box 5 is provided at the position where the valve stem 4 is matched with the upper port of the valve body 1 .

A further embodiment is that the bottom of the pneumatic actuator 8 is provided with a bracket 6, the bottom of the bracket 6 is provided with a circular hole, and is locked with the outer periphery of the stuffing box 5 through screws, thereby fixing the pneumatic actuator. 8.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, the present utility model can also be used without departing from the purpose of the present utility model. Various changes, modifications, substitutions and alterations are made below, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a full heat preservation of manual-automatic presss from both sides cover ball valve, includes valve body, valve rod, disk seat, case and hand wheel, filtration relief pressure valve, solenoid valve and pneumatic actuator, its characterized in that: the periphery of the valve body and the connecting end of the valve rod are surrounded by a heat-insulating jacket fixed on the valve body, the heat-insulating jacket and the outer surface of the valve body form a heat-insulating cavity, the heat-insulating jacket is provided with a heat source inlet and a heat source outlet, the lower part of the heat-insulating jacket is provided with a drain outlet which comprises a drain passage fixedly arranged on the heat-insulating jacket, the drain passage is communicated with the heat-insulating cavity, the outlet of the drain passage is provided with a sealing component, the upper end of the valve rod is connected with a hand wheel, an electromagnetic valve and a pneumatic actuating mechanism, the hand wheel can manually adjust the opening degree of the valve rod through a worm and gear structure, the electromagnetic valve controls the opening or closing of the valve by a signal from a central control room, the outside is connected with an air filtering pressure reducing valve in a matching way, one side of the inlet of, the installation interface is equipped with the internal thread to be connected with the external screw thread sealing fit that the end cover periphery was equipped with.

2. The manual-automatic integrated full-thermal insulation jacket ball valve according to claim 1, characterized in that: the pneumatic actuating mechanism converts air pressure input by the air compressor into thrust to the push rod by virtue of the elastic diaphragm of the pneumatic actuating mechanism, and the valve core generates corresponding displacement through the push rod, so that the opening degree of the valve is changed, and automatic control adjustment is realized.

3. The manual-automatic integrated full-thermal insulation jacket ball valve according to claim 1, characterized in that: and a sealing ring is arranged at the contact surface of the mounting interface and the valve body.

4. The manual-automatic integrated full-thermal insulation jacket ball valve according to claim 1, characterized in that: and a packing box is arranged at the matching position of the valve rod and the upper port of the valve body.

5. The manual-automatic integrated full-thermal insulation jacket ball valve according to claim 4, characterized in that: the pneumatic actuating mechanism is characterized in that a support is arranged at the bottom of the pneumatic actuating mechanism, a circular hole is formed in the bottom of the support, and the support is matched and locked with the periphery of the stuffing box through a screw, so that the pneumatic actuating mechanism is fixed.

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