Nitrogen protection mechanism for disc separator

Abstract

The utility model discloses a nitrogen protection mechanism for a disc separator, which comprises a bottom plate, a nitrogen pipeline and a pressure sensor, and the nitrogen pipeline and the pressure sensor are both fixed on the bottom plate to form modularization; the nitrogen pipeline comprises a purging branch and a pressure maintaining branch, each of the purging branch and the pressure maintaining branch comprises a pressure reducing valve, a flow meter, a ball valve and an electromagnetic valve which are sequentially connected, the pressure reducing valve of the purging branch is high in set pressure, and the pressure reducing valve of the pressure maintaining branch is low in set pressure; by means of the structure, the flow and switch of nitrogen filled into the disc type separator can be automatically controlled, manual operation is reduced, the structure is safe and reliable, the experimental effect feedback is good, and the safety performance of the disc type separator is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and relates to nitrogen protection for a disc separator, in particular to a nitrogen protection mechanism for a disc separator. Background Technique

[0002] The working process of the nitrogen protection system of the explosion-proof disc separator is as follows: Before the separator starts, large-flow nitrogen purging is carried out to displace oxygen and control the oxygen content outside the explosion limit. During operation, only small-flow nitrogen is required for pressure maintenance. During the operation process, if the nitrogen pressure is detected to be low, the solenoid valve is opened to start filling nitrogen, and if the nitrogen pressure is detected to be high, the nitrogen solenoid valve is closed.

[0003] As Figure 2 shown, the existing nitrogen module has only one main nitrogen delivery path. However, the flow rates required in the nitrogen purging stage and the nitrogen pressure maintenance stage are different. Therefore, during use, users need to manually change the flow rate, resulting in low automation. Moreover, during the operation of the separator, nitrogen needs to be replenished frequently, and the solenoid valve is opened and closed frequently, which is easy to damage. Content of the Utility Model

[0004] Aiming at the above problems, the main purpose of the utility model is to design a nitrogen protection mechanism for a disc separator, so as to solve the technical problems of manual adjustment of nitrogen flow rate, low automation, and easy damage due to frequent opening of the solenoid valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A nitrogen protection mechanism for a disc separator includes a bottom plate and a nitrogen pipeline fixed on the bottom plate. The nitrogen pipeline includes a purging branch and a pressure maintenance branch; both the purging branch and the pressure maintenance branch include a pressure reducing valve, a flow meter, a ball valve, and a solenoid valve connected in sequence.

[0007] As a further description of the utility model, the protection mechanism further includes a pressure sensor for detecting the nitrogen pressure, and the pressure sensor is fixed to the bottom plate.

[0008] As a further description of the utility model, a plurality of mounting holes are opened on the bottom plate, and the pressure reducing valve, the flow meter, the ball valve, the solenoid valve and the pressure sensor are fixedly installed through the mounting holes and bolts.

[0009] As a further description of the utility model, the pressure reducing valve, the flow meter, the ball valve, and the solenoid valve are connected in sequence through a stainless steel capillary tube.

[0010] Compared with the prior art, the technical effect of the utility model is:

[0011] The utility model provides a nitrogen protection mechanism for a disc separator. The protection mechanism includes a bottom plate, a nitrogen pipeline, and a pressure sensor. The nitrogen pipeline and the pressure sensor are both fixed on the bottom plate to form a modular structure. The nitrogen pipeline includes a purging branch and a pressure maintaining branch, and both the purging branch and the pressure maintaining branch include a pressure reducing valve, a flow meter, a ball valve, and a solenoid valve connected in sequence. The pressure reducing valve of the purging branch is set to a high pressure, and the pressure reducing valve of the pressure maintaining branch is set to a low pressure. Through the above structure, it is possible to automatically control the flow rate and switch of nitrogen filled into the disc separator, reducing manual operation. This structure is safe and reliable, with good experimental effect feedback, and improves the safety performance of the disc separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the nitrogen protection mechanism of the present utility model;

[0013] Figure 2 It is a schematic diagram of the nitrogen protection mechanism of the prior art.

[0014] In the figure, 1. Bottom plate, 11. Mounting holes, 2. Nitrogen pipeline, 3. Pressure sensor, 4. Pressure reducing valve, 5. Flow meter, 6. Ball valve, 7. Solenoid valve, 8. Stainless steel capillary, 81. Inlet pipe, 82. Outlet pipe, 83. First branch, 84. Second branch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be described in detail below with reference to the accompanying drawings:

[0016] In an embodiment of the present utility model, a nitrogen protection mechanism for a disc separator is disclosed. Referring to Figure 1 as shown, the protection mechanism includes: a bottom plate 1, a nitrogen pipeline 2, and a pressure sensor 3. The nitrogen pipeline 2 and the pressure sensor 3 are both fixed on the bottom plate 1 to form a modular structure. Among them, the nitrogen pipeline 2 includes a purging branch and a pressure maintaining branch, and both the purging branch and the pressure maintaining branch include a pressure reducing valve 4, a flow meter 5, a ball valve 6, and a solenoid valve 7 connected in sequence. The pressure reducing valve 4 of the purging branch is set to a high pressure, and the pressure reducing valve 4 of the pressure maintaining branch is set to a low pressure.

[0017] Specifically, in this embodiment, a plurality of mounting holes 11 are provided on the above-mentioned bottom plate 1. The mounting holes 11 are usually arranged regularly in horizontal and vertical rows. The pressure reducing valve 4, the flow meter 5, the ball valve 6, the solenoid valve 7, and the pressure sensor 3 are fixedly installed through the mounting holes 11 and bolts.

[0018] In this embodiment, the above pressure reducing valve 4, flowmeter 5, ball valve 6, and solenoid valve 7 are sequentially connected by a stainless steel capillary 8. Among them, the pressure reducing valve 4 of the purging branch is set as a purging air pressure reducing valve, the flowmeter 5 is set as a purging flowmeter, the ball valve 6 is set as a purging ball valve, and the solenoid valve 7 is set as a purging solenoid valve; the pressure reducing valve 4 of the pressure maintaining branch is set as a pressure maintaining air pressure reducing valve, the flowmeter 5 is set as a pressure maintaining flowmeter, the ball valve 6 is set as a pressure maintaining ball valve, and the solenoid valve 7 is set as a pressure maintaining solenoid valve. The above stainless steel capillary 8 includes an inlet pipe 81, an outlet pipe 82, a first branch 83, and a second branch 84. The inlets of the first branch 83 and the second branch 84 are sequentially connected to the inlet pipe 81, and the outlets are sequentially connected to the outlet pipe 82. In this embodiment, the first branch 83 and the second branch 84 are arranged in a parallel layout, but it is not limited to the parallel layout, and also includes other first passages and second passages that can be formed from the inlet pipe 81 through the first branch 83 and the second branch 84 to the outlet pipe 82. Specifically, the purging air pressure reducing valve and the pressure maintaining air pressure reducing valve are sequentially arranged from the inlet of the inlet pipe 81. The first branch 83 is connected to the inlet pipe 81 between the purging air pressure reducing valve and the pressure maintaining air pressure reducing valve, and the outlet of the inlet pipe 81 is connected to the second branch 84; the purging flowmeter, the purging ball valve, and the purging solenoid valve are sequentially arranged on the first branch 83 from one end of the inlet pipe 81, and the pressure maintaining flowmeter, the pressure maintaining ball valve, and the pressure maintaining solenoid valve are sequentially arranged on the second branch 84 from one end of the inlet pipe 81.

[0019] Through the above embodiment, the nitrogen protection mechanism of the disc separator of the present utility model is disclosed. During the use process, it includes the following steps:

[0020] S1: Before starting the disc separator, open the solenoid valve of the purging branch to perform a large-flow nitrogen purge to displace the oxygen inside the disc separator until the oxygen content in the cavity is outside the explosion limit;

[0021] S2: During the operation of the disc separator, the solenoid valve of the purging branch is closed, and the solenoid valve of the pressure maintaining branch is continuously opened, and a small-flow nitrogen is continuously introduced into the disc separator for pressure maintaining;

[0022] S3: When the pressure sensor detects that the nitrogen pressure is low, open the solenoid valve of the purging branch for purging until the pressure reaches the set value, then close the solenoid valve of the purging branch and continue small-flow pressure maintaining.

[0023] It should be noted that the above detection of the nitrogen pressure by the pressure sensor 3 and the control of the opening and closing of the solenoid valve 7 of the purging branch according to the magnitude of the nitrogen pressure are functions that can be achieved by electrical control in the prior art.

[0024] Through the above embodiment, the technical solution of the present utility model is disclosed. Compared with the nitrogen protection mechanism of the prior art, the present utility model has the following advantages:

[0025] 1. The utility model forms modularization through the setting of the bottom plate, which is convenient for transportation;

[0026] 2. The bottom plate of the utility model is covered with regularly arranged mounting holes, and the positions of each device can be adjusted according to actual needs, and it is beautiful and generous;

[0027] 3. The nitrogen gas pipeline of the utility model includes a purging branch and a pressure maintaining branch. One is responsible for large-flow purging, and the other is responsible for small-flow pressure maintaining. The structure is simple and easy to implement;

[0028] 4. The utility model does not require manual intervention, realizes automatic flow regulation, and avoids the problem that the solenoid valve is frequently opened and easily damaged.

[0029] The above embodiments are only used to illustrate the technical solutions of the utility model rather than to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the utility model shall be covered within the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solutions of the utility model.

Claims

1. A nitrogen protection mechanism for a disc separator, characterized in that: The described protection mechanism includes a bottom plate and a nitrogen gas pipeline fixed on the bottom plate. The nitrogen gas pipeline includes a purging branch and a pressure maintaining branch; Both the purging branch and the pressure maintaining branch include a pressure reducing valve, a flow meter, a ball valve, and a solenoid valve connected in sequence.

2. The nitrogen protection mechanism for a disc separator according to claim 1, characterized in that: The protection mechanism further includes a pressure sensor for detecting the nitrogen gas pressure, and the pressure sensor is fixed to the bottom plate.

3. The nitrogen protection mechanism for a disc separator according to claim 2, characterized in that: A plurality of mounting holes are formed on the bottom plate, and the pressure reducing valve, the flow meter, the ball valve, the solenoid valve, and the pressure sensor are fixedly installed through the mounting holes and bolts.

4. A nitrogen protection mechanism for a disc separator according to claim 1, characterized in that: The pressure reducing valve, the flow meter, the ball valve, and the solenoid valve are connected in sequence through a stainless steel capillary tube.

Images