CN202746951U - Pneumatic control device - Google Patents

Abstract

The utility model is a pneumatic control device that can automatically adjust the power of heating equipment without power supply, including a temperature controller, a main fire protector, a spare valve, a starting valve, a cut-off valve, a flow valve and a pressure gauge; the spare valve , start valve, cut-off valve and flow valve are connected in series to form a closed circuit through pipelines, and the connecting pipes of the backup valve and start valve are connected with the connecting pipes of the cut-off valve and flow valve, which form a "day"-shaped circuit as a whole; There is a pressure gauge on the connecting pipe of the valve and the cut-off valve; the two ends of the flow valve are connected through the pipeline; The two ends of the connecting pipe of the backup valve and the flow valve are connected in parallel with the main fire protector through the pipeline, and the parallel pipeline is also provided with a drain plug. The utility model can automatically adjust the power of the heating equipment when there is no electricity, so as to realize the purpose of automatically adjusting the combustion state.

Description

pneumatic control device

technical field

The invention relates to a control device for power adjustment of heating equipment, in particular to a pneumatic control device for automatically power adjustment of heating equipment without power supply. the

Background technique

In oilfield surface engineering, in order to meet the needs of oil and gas well product storage and pipeline transportation or other transportation methods, the oilfield wellhead products must be heated. During the heating process, the power of the heating equipment must be adjusted. The power adjustment of the heating equipment must be It must be controlled by a special control device. At present, the control devices used in oil fields must use electricity, but in large-area desert and Gobi environments, it cannot fully meet the requirements for electrification at all wellheads that need to be heated. Therefore, when there is no electricity, the power of the heating equipment is adjusted. It is difficult to proceed. the

Contents of the invention

The purpose of the present invention is to overcome the defect that the existing control device cannot control the power adjustment of the heating equipment without electricity, and to invent a pneumatic control device that can automatically adjust the power of the heating equipment without power supply. the

The purpose of the present invention is achieved according to the following technical solutions: the pneumatic control device includes a temperature controller, a mother fire protector, a backup valve, a starting valve, a shut-off valve, a flow valve and a pressure gauge;

The standby valve, starting valve, cut-off valve and flow valve are connected in series to form a closed loop through pipelines. The connecting pipes of the standby valve and starting valve are connected with the connecting pipes of the shut-off valve and the flow valve, and the whole forms a "day"-shaped circuit. ;

There is a pressure gauge on the connecting pipe of the starting valve and the shut-off valve;

The two ends of the flow valve are connected through the pipeline;

The two ends of the connecting pipe of the starting valve and the shut-off valve are connected in parallel with the temperature controller through the pipeline, and the parallel pipeline is provided with a drain plug;

The two ends of the connecting pipe of the spare valve and the flow valve are connected in parallel with the main fire protector through the pipeline, and a drain plug is also arranged on the parallel pipeline. the

The spare valve, starting valve, cut-off valve and flow valve are arranged in the control box, the pressure gauge is arranged at the top of the control box, the handles of the spare valve and the starting valve are arranged at the top of the control box, and the drain plug is arranged at the bottom of the control box. the

The positive effects of the present invention are as follows: the present invention can automatically adjust the power of the heating equipment in the absence of electricity, so as to realize the purpose of automatically adjusting the combustion state. the

Description of drawings

Fig. 1 is a structural diagram of the present invention

In the picture: 1 temperature controller 2 main fire protector 3 spare valve

4 Start valve 5 Shut-off valve 6 Flow valve

7 Pressure gauge 8 Drain plug 9 Control box

Detailed ways

As shown in Figure 1, the pneumatic control device includes a temperature controller 1, a mother fire protector 2, a backup valve 3, a starting valve 4, a shut-off valve 5, a flow valve 6 and a pressure gauge 7;

The standby valve 3, the starting valve 4, the cut-off valve 5 and the flow valve 6 are connected in series to form a closed circuit through pipelines, the connecting pipes of the standby valve 3 and the starting valve 4 are connected with the connecting pipes of the cut-off valve 5 and the flow valve 6, and its overall composition A circuit in the shape of "日";

A pressure gauge 7 is provided on the connecting pipe of the starting valve 4 and the shut-off valve 5;

The two ends of the flow valve 6 are communicated through pipelines;

The two ends of the connecting pipe of the starting valve 4 and the shut-off valve 5 are connected in parallel with the temperature controller 1 through the pipeline, and a drain plug 8 is arranged on the parallel pipeline;

Both ends of the connecting pipe of the backup valve 3 and the flow valve 6 are connected in parallel with the main fire protector 4 through a pipeline, and a drain plug 8 is also arranged on the parallel pipeline. the

The backup valve 3, start valve 4, cut-off valve 5 and flow valve 6 are arranged in the control box 9, the pressure gauge 7 is arranged at the top of the control box 9, the handles of the backup valve 3 and the start valve 4 are arranged at the top of the control box 9, The hydrophobic plug 8 is located at the bottom of the control box 9 . the

When in use, the main fire protector automatically opens the starting valve due to heat, and the burner is put into normal operation; the temperature is set for the temperature controller, the pressure gauge displays the pressure fed back by the temperature controller, and the pressure signal of the temperature controller is fed back To the flow valve, so as to control the opening or closing of the flow valve, and realize the conversion of large and small fires. When the temperature reaches above the set value, the flow valve will automatically close down. When the temperature drops below the set value, the flow valve will automatically open. Large, when an abnormal situation occurs, the main fire protector automatically closes the starting valve, so that the burner is safely out of service. the

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to within the scope of the technical solutions of the present invention. the

Claims (2)

1. an air control unit comprises temperature controller, female fiery protector, service valve, starter gate valve, cut-off valve, Flow valve and pressure gauge; It is characterized in that:

Service valve, starter gate valve, cut-off valve and Flow valve are connected into the closed-loop path by pipeline, and the connecting tube of service valve and starter gate valve is connected with the connecting tube of cut-off valve and Flow valve, its whole loop that consists of one " day " font;

The connecting tube of starter gate valve and cut-off valve is provided with pressure gauge;

Pipeline connection is passed through at the two ends of Flow valve;

The connecting tube two ends of starter gate valve and cut-off valve are in parallel with temperature controller by pipeline, and this parallel pipeline is provided with hydrophobic plug;

The connecting tube two ends of service valve and Flow valve are in parallel with female fiery protector by pipeline, also are provided with hydrophobic plug on this parallel pipeline.

2. air control unit according to claim 1, it is characterized in that: described service valve, starter gate valve, cut-off valve and Flow valve are located in the control box, pressure gauge is located at the control box top, and the handle of service valve and starter gate valve is located at the control box top, and hydrophobic plug is located at the control box bottom.

Images