Switching device facilitating installation of diaphragm pressure gauge

Abstract

The utility model discloses a switching device convenient for installation of a diaphragm pressure gauge, which relates to the technical field of pipelines and comprises an existing denitration agent pipeline, and a switching mechanism is connected to the middle of the denitration agent pipeline. The switching mechanism comprises a reversing valve, a first pipeline, a second pipeline, a first diaphragm pressure gauge, a first electromagnetic valve, a second diaphragm pressure gauge, a second electromagnetic valve, a water immersion sensor and a controller. The reversing valve comprises a valve body, a valve element, a screw rod, a sealing ring and a round handle. The utility model has the advantages that when one diaphragm pressure gauge goes wrong and needs to be replaced, the pipeline where the diaphragm pressure gauge is located is closed by rotating the round handle and utilizing the valve core, so that a denitration agent flows out of the other pipeline, the normal work of equipment is ensured, and then the diaphragm pressure gauge on the pipeline can be replaced; the technical defects existing at present are overcome.

Description

Technical field:

[0001] The utility model relates to the technical field of pipelines, in particular to a switching device which is convenient for installing a diaphragm pressure gauge. Background technology:

[0002] In the production process of the chemical denitrification system, it is usually necessary to denitrify the flue gas in the flue. The denitrifier flows into the flue through the denitrifier pipeline and is sprayed in the flue with a nozzle to mix with the flue gas. After mixing, it enters the circulating fluidized bed for denitrification treatment and subsequent work.

[0003] The current technical defect is: due to damage to the diaphragm pressure gauge or the flange on the diaphragm pressure gauge, the denitrification agent pipeline can only be disconnected, and the upstream and downstream are closed, and repairs and replacements are carried out. The replacement process takes a relatively long time, and the denitrification agent delivery is suspended during the replacement process, affecting production. Utility model content:

[0004] The purpose of the utility model is to provide a switching device which is convenient for installing a diaphragm pressure gauge, so as to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is implemented by the following technical solutions:

[0006] A switching device for facilitating the installation of a diaphragm pressure gauge comprises a denitrification agent pipeline, a switching mechanism is connected to the middle of the denitrification agent pipeline, and the switching mechanism comprises: a reversing valve, a No. 1 pipeline, a No. 2 pipeline, a No. 1 diaphragm pressure gauge, a No. 1 solenoid valve, a No. 2 diaphragm pressure gauge, a No. 2 solenoid valve, a water immersion sensor and a controller; one end of the middle of the denitrification agent pipeline is connected to the input end of the reversing valve, and the No. 1 output end and the No. 2 output end of the valve body on the reversing valve are respectively connected to the head end of the No. 1 pipeline and the No. 2 pipeline. One end of the tail of pipeline No. 1 is connected to the tail of pipeline No. 2, and pipeline No. 1 is installed with a diaphragm pressure gauge No. 1 and a solenoid valve No. 1 in sequence along the flow direction, and pipeline No. 2 is installed with a diaphragm pressure gauge No. 2 and a solenoid valve No. 2 in sequence along the flow direction, and one end of the tail of pipeline No. 2 is connected to the other end of the middle part of the denitrification agent pipeline through a flange; a water immersion sensor is arranged inside the No. 2 output end, and the water immersion sensor is electrically connected to the controller, and the controller is electrically connected to the No. 1 solenoid valve and the No. 2 solenoid valve respectively.

[0007] Preferably, the reversing valve includes a valve body, a valve core, a screw, a sealing ring and a round handle; a valve core is vertically slidably arranged in the middle of the valve body, a screw is rotatably arranged in the middle of the upper surface of the valve body, the screw is vertically arranged, and the bottom of the screw and the valve core are threadedly connected to enable the valve core to move up and down, a sealing ring is sleeved on the screw, and the sealing ring is fixedly embedded in the top inner wall of the valve body, and the top end of the screw passes through the valve body and is fixed with a round handle.

[0008] Preferably, when the valve core slides downward, the second output end of the valve body can be closed, and the first output end can be opened; when the valve core slides upward, the second output end of the valve body can be opened, and the first output end can be closed.

[0009] The advantages of the utility model are as follows: when one of the diaphragm pressure gauges has a problem and needs to be replaced, it is only necessary to turn the round handle and use the valve core to close the pipeline where the diaphragm pressure gauge is located, so that the denitrification agent flows out from another pipeline to ensure the normal operation of the equipment. The diaphragm pressure gauge on the pipeline can then be replaced, solving the current technical defects. Description of the drawings:

[0010] Figure 1 This is the existing process flow chart;

[0011] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0012] Figure 3 It is a control flow chart of the utility model;

[0013] Figure 4 The internal structure of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 5 The internal structure of the utility model is shown in FIG. Figure 2 .

[0015] In the figure: 1. reversing valve, 2. pipeline No. 1, 3. pipeline No. 2, 4. diaphragm pressure gauge No. 1, 5. solenoid valve No. 1, 6. diaphragm pressure gauge No. 2, 7. solenoid valve No. 2, 8. water immersion sensor, 9. controller, 10. denitrification agent pipeline, 11. valve body, 11.1. output end No. 1, 11.2. output end No. 2, 12. valve core, 13. screw, 14. sealing ring, 15. round handle. Specific implementation method:

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-5 The utility model provides a technical solution of a switching device that is convenient for installing a diaphragm pressure gauge:

[0018] A switching device for facilitating the installation of a diaphragm pressure gauge comprises a denitrification agent pipeline 10, a switching mechanism is connected to the middle of the denitrification agent pipeline 10, and the switching mechanism comprises: a reversing valve 1, a No. 1 pipeline 2, a No. 2 pipeline 3, a No. 1 diaphragm pressure gauge 4, a No. 1 solenoid valve 5, a No. 2 diaphragm pressure gauge 6, a No. 2 solenoid valve 7, a water immersion sensor 8 and a controller 9.

[0019] The reversing valve 1 comprises: a valve body 11, a valve core 12, a screw 13, a sealing ring 14 and a round handle 15; a valve core 12 is vertically slidably arranged in the middle of the valve body 11, a screw 13 is rotatably arranged in the middle of the upper surface of the valve body 11, the screw 13 is vertically arranged, the bottom of the screw 13 is threadedly connected to the valve core 12 so that the valve core 12 moves up and down, a sealing ring 14 is sleeved on the screw 13, the sealing ring 14 is fixedly embedded in the top inner wall of the valve body 11, and the top end of the screw 13 passes through the valve body 11 and is fixed with a round handle 15.

[0020] When the valve core 12 slides downward, the No. 2 output end 11.2 of the valve body 11 can be closed, and the No. 1 output end 11.1 can be opened, so that the denitrification agent flows into the denitrification agent pipeline 10 through the No. 1 pipeline 2, and the denitrification agent can continue to be transported without affecting production. At the same time, it is convenient to replace the No. 2 diaphragm pressure gauge 6 on the No. 2 pipeline 3;

[0021] When the valve core 12 slides upward, the No. 2 output end 11.2 of the valve body 11 can be opened, and the No. 1 output end 11.1 can be closed at the same time. The denitrification agent flows into the denitrification agent pipeline 10 through the No. 2 pipeline 3, and the denitrification agent can continue to be transported without affecting production. At the same time, it is convenient to replace the No. 1 diaphragm pressure gauge 4 on the No. 1 pipeline 2.

[0022] One end of the middle part of the denitrification agent pipeline 10 is connected to the input end of the reversing valve 1, and the No. 1 output end 11.1 and the No. 2 output end 11.2 of the valve body 11 on the reversing valve 1 are respectively connected to the head end of the No. 1 pipeline 2 and the No. 2 pipeline 3, and the tail end of the No. 1 pipeline 2 is connected to the tail end of the No. 2 pipeline 3. The No. 1 pipeline 2 is sequentially installed with a No. 1 diaphragm pressure gauge 4 and a No. 1 solenoid valve 5 along the flow direction, and the No. 2 pipeline 3 is sequentially installed with a No. 2 diaphragm pressure gauge 6 and a No. 2 solenoid valve 7 along the flow direction. One end of the tail of the No. 2 pipeline 3 is connected to the other end of the middle part of the denitrification agent pipeline 10 through a flange; a water immersion sensor 8 is arranged inside the No. 2 output end 11.2, and the water immersion sensor 8 is electrically connected to the controller 9, and the controller 9 is electrically connected to the No. 1 solenoid valve 5 and the No. 2 solenoid valve 7, respectively.

[0023] refer to Figure 4 and Figure 5The working principle is as follows: when the No. 2 diaphragm pressure gauge 6 has a problem and needs to be replaced, the valve core 12 slides downward by turning the round handle 15 forward; the No. 2 output end 11.2 is closed and the No. 1 output end 11.1 is opened by the valve core 12; the denitrification agent flows into the denitrification agent pipeline 10 through the No. 1 pipeline 2; at the same time, since the No. 2 output end 11.2 is closed, the water immersion sensor 8 cannot contact the denitrification agent liquid, and the water immersion sensor 8 generates an electrical signal and transmits it to the controller 9, and the controller 9 controls the No. 2 solenoid valve 7 to close the No. 2 pipeline 3 to prevent backflow. At this time, the No. 2 diaphragm pressure gauge 6 on the No. 2 pipeline 3 can be replaced.

[0024] When the No. 1 diaphragm pressure gauge 4 has a problem and needs to be replaced, the round handle 15 is reversed to slide the valve core 12 upward; the No. 1 output end 11.1 is closed and the No. 2 output end 11.2 is opened through the valve core 12; the denitrification agent flows into the denitrification agent pipeline 10 through the No. 2 pipeline 3; at the same time, since the No. 1 output end 11.1 is closed, the water immersion sensor 8 contacts the denitrification agent liquid, and the water immersion sensor 8 generates an electrical signal and transmits it to the controller 9, and the controller 9 controls the No. 1 solenoid valve 5 to close the No. 1 pipeline 2 to prevent backflow. At this time, the No. 2 diaphragm pressure gauge 6 on the No. 1 pipeline 2 can be replaced.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A switching device for facilitating installation of a diaphragm pressure gauge, comprising a denitrification agent pipeline (10), characterized in that: A switching mechanism is connected to the middle of the denitrification agent pipeline (10), and the switching mechanism comprises: a reversing valve (1), a No. 1 pipeline (2), a No. 2 pipeline (3), a No. 1 diaphragm pressure gauge (4), a No. 1 solenoid valve (5), a No. 2 diaphragm pressure gauge (6), a No. 2 solenoid valve (7), a water immersion sensor (8) and a controller (9); one end of the middle of the denitrification agent pipeline (10) is connected to the input end of the reversing valve (1), and the No. 1 output end (11.1) and the No. 2 output end (11.2) of the valve body (11) on the reversing valve (1) are respectively connected to the head ends of the No. 1 pipeline (2) and the No. 2 pipeline (3), and the No. 1 pipeline (2 ) is connected to the tail of the No. 2 pipeline (3); the No. 1 pipeline (2) is provided with a No. 1 diaphragm pressure gauge (4) and a No. 1 solenoid valve (5) in sequence along the flow direction; the No. 2 pipeline (3) is provided with a No. 2 diaphragm pressure gauge (6) and a No. 2 solenoid valve (7) in sequence along the flow direction; the No. 2 pipeline (3) is connected to the other end of the middle of the denitrification agent pipeline (10) through a flange; a water immersion sensor (8) is provided inside the No. 2 output end (11.2); the water immersion sensor (8) is electrically connected to a controller (9); and the controller (9) is electrically connected to the No. 1 solenoid valve (5) and the No. 2 solenoid valve (7), respectively.

2. A switching device for facilitating installation of a diaphragm pressure gauge according to claim 1, characterized in that: The reversing valve (1) comprises a valve body (11), a valve core (12), a screw (13), a sealing ring (14) and a round handle (15); a valve core (12) is vertically slidably arranged in the middle of the valve body (11), a screw (13) is rotatably arranged in the middle of the upper surface of the valve body (11), the screw (13) is vertically arranged, the bottom of the screw (13) and the valve core (12) are threadedly connected so that the valve core (12) moves up and down, a sealing ring (14) is sleeved on the screw (13), and the sealing ring (14) is fixedly embedded in the top inner wall of the valve body (11), and the top end of the screw (13) passes through the valve body (11) and is fixed with a round handle (15).

3. A switching device for facilitating installation of a diaphragm pressure gauge according to claim 2, characterized in that: When the valve core (12) slides downward, the second output end (11.2) of the valve body (11) can be closed, while the first output end (11.1) is opened; when the valve core (12) slides upward, the second output end (11.2) of the valve body (11) can be opened, while the first output end (11.1) is closed.

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