Front-stage pretreatment powder back-blowing recovery system for on-line analyzer

Abstract

The utility model discloses a preceding-stage pretreatment powder blowback recovery system for an on-line analyzer, which comprises a ball valve, a differential pressure transmitter, a filter, a separator, a radar liquid level meter and a tuning fork liquid level switch, the inlet of the ball valve is connected with a nitrogen pipeline, the outlet end of the ball valve is connected with the inlet of an electromagnetic valve A, the outlet end of the right side of a three-way electromagnetic valve a is connected with the inlet of the filter, and the outlet end of the right side of the three-way electromagnetic valve b is connected with the inlet of the filter. The outlet end of the filter is connected with the left inlet of the three-way solenoid valve b, the outlet end of the right side of the three-way solenoid valve b is connected to the oxygen analysis preposed tank, the drain outlet in the lower end of the filter is connected with the inlet of the solenoid valve B, the outlet of the solenoid valve B is connected with the inlet of the separator, the outlet of the separator is connected with the inlet of the solenoid valve E, and the outlet in the upper end of the separator is connected with the inlet of the solenoid valve C. Automatic control can be achieved, manual intervention is reduced, the reliability and safety of the system are improved, the blockage condition of the filter element can be found in time, treatment can be conducted in time, and normal operation of the system is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic online analytical instrument equipment, in particular to a back-blowing recovery system for pre-treatment powder of an online analyzer. Background Art

[0002] In the field of automatic online analytical instrument technology, the current oxygen analyzer pre-treatment is to manually clean the carbon black powder in the filter element, which is a large workload and has a high risk factor, exposing personnel to dangerous environments and prone to safety accidents. When the staff closes the manual valve incorrectly during the purge cleaning process, it is easy to cause medium gas leakage, carbon monoxide poisoning and other accidents. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a back-flushing recovery system for pre-treatment powder of an online analyzer, which solves the above-mentioned technical problems.

[0004] To achieve the purpose of the utility model, the utility model adopts the following technical scheme: a powder backflush recovery system for pre-treatment of an online analyzer, comprising a ball valve, a differential pressure transmitter, a filter, a separator, a radar level gauge, and a tuning fork level switch, wherein the inlet of the ball valve is connected to a nitrogen pipeline; the outlet end of the ball valve is connected to the inlet of an electromagnetic valve A; the outlet end of the electromagnetic valve A is respectively connected to a three-way electromagnetic valve a and a three-way electromagnetic valve b; the right outlet end of the three-way electromagnetic valve a is connected to the inlet of the filter; the outlet end of the filter is connected to the left inlet of the three-way electromagnetic valve b; the right outlet end of the three-way electromagnetic valve b is connected to an oxygen analysis pre-tank; the sewage outlet at the lower end of the filter is connected to the inlet of the electromagnetic valve B; the outlet of the electromagnetic valve B is connected to the inlet of the separator; the outlet of the separator is connected to the inlet of the electromagnetic valve E; the upper outlet of the separator is connected to the inlet of the electromagnetic valve C.

[0005] Furthermore, the inlet and outlet ends of the filter are connected to a differential pressure transmitter.

[0006] Furthermore, the upper outlet of the separator is connected to a radar level meter; the upper outlet of the separator is connected to a solenoid valve D; and the inlet of the solenoid valve D is connected to a spray water pipeline.

[0007] Furthermore, a tuning fork liquid level switch is connected and installed on the side of the separator.

[0008] Furthermore, the outlet of the solenoid valve C is connected to a venting pipeline.

[0009] Furthermore, the outlet of the solenoid valve E is connected to a pipeline of a process recovery system.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The system can quickly and effectively remove carbon black powder from the filter element by nitrogen purging, thereby improving work efficiency and reducing labor intensity. The system can realize automatic control by controlling nitrogen purging with a solenoid valve, reduce manual intervention, and improve system reliability and safety. The system can monitor the pressure difference of the filter element in real time through a differential pressure transmitter, detect filter element blockage in time, clean it in time, and ensure the normal operation of the system. The system can monitor the liquid level of the separator in real time through a liquid level gauge and a liquid level switch, detect abnormal liquid level in time, handle it in time, and ensure the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a system schematic diagram of the utility model;

[0013] In the figure: ball valve-1, solenoid valve A-2, three-way solenoid valve a-3, differential pressure transmitter-4, filter-5, separator-6, radar level gauge-7, tuning fork level switch-8, three-way solenoid valve b-9, solenoid valve B-10, solenoid valve C-11, solenoid valve D-12, solenoid valve E-13. DETAILED DESCRIPTION

[0014] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention:

[0015] like Figure 1 As shown, a powder backflush recovery system for pre-treatment of an online analyzer comprises a ball valve 1, a differential pressure transmitter 4, a filter 5, a separator 6, a radar level gauge 7, and a tuning fork level switch 7. The inlet of the ball valve 1 is connected to a nitrogen pipeline. The ball valve 1 is provided with a mechanical lock to prevent misoperation, which can ensure that the ball valve 1 can be operated only when the mechanical lock is released, whether in an open or closed state, to prevent nitrogen interruption and purging failure caused by human misoperation; the outlet of the ball valve 1 is connected to the inlet of the solenoid valve A2; the outlet of the solenoid valve A2 is respectively connected to a three-way solenoid valve a3 and a three-way solenoid valve b9, and the outlet of the solenoid valve A2 is respectively connected to the inlets of the three-way solenoid valve a3 and the three-way solenoid valve b9 through a ferrule-type three-way connector. The three-way solenoid valve a3 is connected to the inlet of the filter 5, and the filter element can be disassembled for maintenance and replacement; the outlet of the filter 5 is connected to the left inlet of the three-way solenoid valve b9; the right outlet of the three-way solenoid valve b9 is connected to the oxygen analysis pre-tank; the sewage outlet at the lower end of the filter 5 is connected to the inlet of the solenoid valve B10; the outlet of the solenoid valve B10 is connected to the inlet of the separator 6; the outlet of the separator 6 is connected to the inlet of the solenoid valve E13; the upper outlet of the separator 6 is connected to the inlet of the solenoid valve C11, and the carbon black powder in the filter can be removed unmanned through automatic control, and then it enters the process recovery system for recycling after being sprayed with water by the separator, and the whole process is controlled by automatic program.

[0016] Specifically, the inlet and outlet ends of the filter 5 are connected to the differential pressure transmitter 4 .

[0017] Specifically, the upper outlet of the separator 6 is connected to the radar level meter 7; the upper outlet of the separator 6 is connected to the solenoid valve D12; the inlet of the solenoid valve D12 is connected to the spray water pipeline.

[0018] Specifically, a tuning fork liquid level switch 8 is connected and installed on the side of the separator 6 .

[0019] Specifically, the outlet of the solenoid valve C11 is connected to a venting pipeline.

[0020] Specifically, the outlet of the solenoid valve E13 is connected to the recovery system pipeline of the process.

[0021] When in use, when the system is working normally, ball valve 1 is in a normally open state, and the mechanical lock is locked to prevent erroneous operation and nitrogen interruption from being unable to purge. Solenoid valve A2 is in a closed state, and the medium in the sampling pipeline enters the filter 5 through the normally open left and right passages of the three-way solenoid valve a3 for carbon black powder filtration. After that, the clean medium enters the oxygen analyzer through the normally open left and right passages of the three-way solenoid valve b9. Solenoid valve B10 is in a closed state, solenoid valve D12 is in a closed state, and solenoid valve E13 is in a closed state.

[0022] When the differential pressure transmitter 4 detects that the inlet and outlet pressure difference of the filter 5 is greater than a certain limit, it means that there is too much carbon black powder in the filter 5 and it needs to be cleaned. The screen pops up to ask whether the filter needs to be cleaned and whether the cleaning procedure is allowed. The process operator releases the interlock of the online analyzer according to the operation flow and performs the next step of the program operation. In the next program, the three-way solenoid valve a3 is energized to close the left and right passages, and the upper end and right passage of the three-way solenoid valve a3 are opened. The three-way solenoid valve b9 is energized to close the left and right passages, and the upper end and left passage of the three-way solenoid valve a3 are opened. Then the solenoid valve A2 is energized to open and use nitrogen to purge the carbon black powder in the filter 5, so that the carbon black powder enters the separator 6. At the same time, the solenoid valve D12 is energized to open and use spray water to spray. The solenoid valve C11 is energized to open so that the nitrogen is discharged in time.

[0023] When the set purge time ends and the delay is 3S, the solenoid valve A2, solenoid valve B10 and solenoid valve D12 are closed. The left and right passages of the three-way solenoid valve a3 are opened when the power is off, and the upper end and right passages of the three-way solenoid valve a3 are closed when the power is off. The left and right passages of the three-way solenoid valve b9 are opened, and the upper end and left passages of the three-way solenoid valve a3 are closed. The oxygen analyzer starts to be used, and it is interlocked and put into use after the value displays normal.

[0024] When the radar level gauge 7 of the separator 6 shows that the liquid level has reached a certain value, the solenoid valve E13 is energized to open and discharge the carbon black water from the separator 6 to the recovery system for utilization.

[0025] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A powder backflush recovery system for pre-treatment of an online analyzer, comprising a ball valve (1), a differential pressure transmitter (4), a filter (5), a separator (6), a radar level gauge (7), and a tuning fork level switch (8), characterized in that: The inlet of the ball valve (1) is connected to a nitrogen pipeline; the outlet of the ball valve (1) is connected to the inlet of the solenoid valve A (2); the outlet of the solenoid valve A (2) is respectively connected to a three-way solenoid valve a (3) and a three-way solenoid valve b (9); the right outlet of the three-way solenoid valve a (3) is connected to the inlet of the filter (5); the outlet of the filter (5) is connected to the left inlet of the three-way solenoid valve b (9); the right outlet of the three-way solenoid valve b (9) is connected to an oxygen analysis pre-tank; the sewage outlet at the lower end of the filter (5) is connected to the inlet of the solenoid valve B (10); the outlet of the solenoid valve B (10) is connected to the inlet of the separator (6); the outlet of the separator (6) is connected to the inlet of the solenoid valve E (13); the upper outlet of the separator (6) is connected to the inlet of the solenoid valve C (11).

2. The powder backflush recovery system for pre-treatment of online analyzer according to claim 1, characterized in that: The inlet and outlet ends of the filter (5) are connected to a differential pressure transmitter (4).

3. The powder backflush recovery system for pre-treatment of online analyzer according to claim 1, characterized in that: The upper outlet of the separator (6) is connected to a radar level meter (7); the upper outlet of the separator (6) is connected to a solenoid valve D (12); the inlet of the solenoid valve D (12) is connected to a spray water pipeline.

4. The powder backflush recovery system for pre-treatment of online analyzer according to claim 3, characterized in that: A tuning fork liquid level switch (8) is connected and installed on the side of the separator (6).

5. The powder backflush recovery system for pre-treatment of online analyzer according to claim 1, characterized in that: The outlet of the solenoid valve C (11) is connected to a venting pipeline.

6. The powder backflush recovery system for pre-treatment of online analyzer according to claim 1, characterized in that: The outlet of the solenoid valve E (13) is connected to the pipeline of the process recovery system.

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