CN210090239U - Desulfurizing tower pH value, density measurement system and control valve PID control system - Google Patents
Desulfurizing tower pH value, density measurement system and control valve PID control system Download PDFInfo
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- CN210090239U CN210090239U CN201920418988.1U CN201920418988U CN210090239U CN 210090239 U CN210090239 U CN 210090239U CN 201920418988 U CN201920418988 U CN 201920418988U CN 210090239 U CN210090239 U CN 210090239U
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Abstract
The utility model provides a PH value and density measuring system of a desulfurizing tower and a PID control system of a control valve, which comprises a desulfurizing tower; the desulfurizing tower passes through the pipeline and connects gradually densimeter and PH measuring tank, install the PH meter in the PH measuring tank, the level of densimeter is less than PH measuring tank level, and the level of PH measuring tank is less than the level of desulfurizing tower and pipe connection department, still be provided with on the desulfurizing tower and discharge the pipeline and be connected with the pit. The utility model provides high gravity flow PH value, densimeter measurement pipeline's stability. The slurry entering the measuring pipeline is ensured not to be deposited, the liquid level in the measuring tank is kept normal and not to be deposited, and the stability of environment-friendly data monitoring is ensured. The invisible economic value is not estimated.
Description
Technical Field
The utility model relates to a desulfurizing tower pH value, density measurement system and control valve PID control system.
Background
The slurry of the desulfurization absorption tower PH value and densimeter measuring device of the Guizhou Tanrei power generation Co., Ltd is finally discharged into a desulfurization pit through a primary control valve, a densimeter measuring pipeline, a PH meter measuring pool and an outlet manual door. But this kind of gravity flow type measuring device must often adjust the aperture size of export hand-operated gate, guarantees that the measuring tube thick liquid does not take place the deposit phenomenon, guarantees again that measuring tank high liquid level and measuring tank thick liquid keep continuously renewing the state, in case the adjustment just leads to densimeter thick liquid deposit in time easily to cause the influence to the measurement of pH value, densimeter, direct influence operation personnel are to the judgement of thick liquid condition.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a desulfurizing tower pH value, density measurement system and control valve PID control system.
The utility model discloses a following technical scheme can realize.
The utility model provides a PH value and density measuring system of a desulfurizing tower and a PID control system of a control valve, which comprises a desulfurizing tower; the desulfurizing tower passes through the pipeline and connects gradually densimeter and PH measuring tank, install the PH meter in the PH measuring tank, the level of densimeter is less than PH measuring tank level, and the level of PH measuring tank is less than the level of desulfurizing tower and pipe connection department, still be provided with on the desulfurizing tower and discharge the pipeline and be connected with the pit.
The horizontal height of the interface of the desulfurizing tower and the discharge pipeline is less than the height of the interface of the desulfurizing tower and the pipeline.
An electric valve is arranged on the discharge pipeline.
The electrically operated valve is controlled by a PID controller.
And a liquid level meter is arranged in the desulfurizing tower.
A PID control system for measuring pipeline slurry deposition by an anti-desulfurization tower; the input end and the output end of the PID controller are respectively connected with a liquid level meter and an electric valve in the desulfurizing tower.
The liquid level meter detects the liquid level height of the slurry in the desulfurizing tower.
The electric valve controls the size of the outlet of the discharge pipeline to prevent the slurry from depositing in the pipeline.
And the PID controller controls the opening of the electric valve according to the difference value of the liquid level in the desulfurization tower.
The specific mode of the PID controller for controlling the opening degree of the valve is as follows:
a. increasing the opening of the electric valve when the liquid level of the desulfurizing tower rises and the liquid level difference is large;
b. when the liquid level of the desulfurizing tower rises and the liquid level difference is smaller, the opening degree of the electric valve is unchanged;
c. when the liquid level of the desulfurizing tower is reduced and the liquid level difference is larger, the opening degree of the electric valve is reduced;
d. and when the liquid level of the desulfurizing tower is reduced and the liquid level difference is smaller, the opening degree of the electric valve is unchanged.
The beneficial effects of the utility model reside in that: the stability of the gravity flow type PH value and densimeter measuring pipeline is improved. The slurry entering the measuring pipeline is ensured not to be deposited, the liquid level in the measuring tank is kept normal and not to be deposited, and the stability of environment-friendly data monitoring is ensured. The invisible economic value is not estimated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a PID control schematic diagram of the present invention;
in the figure: 1-a desulfurizing tower, 2-a PH measuring pool, 3-a densimeter, 4-a pit, 5-an electric valve, 6-a control valve and 7-a PH measuring meter.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A measuring system for the PH value and the density of a desulfurizing tower and a PID control system of a control valve comprise a desulfurizing tower 1; desulfurizing tower 1 connects gradually densimeter 3 and PH measuring tank 2 through the pipeline, install PH meter 7 in the PH measuring tank 2, the level of densimeter 3 is less than PH measuring tank 2 level, and the level of PH measuring tank 2 is less than the level of desulfurizing tower 1 and pipe connection department, still be provided with discharge pipe on the desulfurizing tower 1 and be connected with pit 4.
The horizontal height of the interface of the desulfurizing tower 1 and the discharge pipeline is less than the height of the interface of the desulfurizing tower 1 and the pipeline.
An electric valve 5 is arranged on the discharge pipeline.
The electrically operated valve 5 is controlled by a PID controller.
And a liquid level meter is arranged in the desulfurizing tower 1.
A PID control system for measuring pipeline slurry deposition by an anti-desulfurization tower; the system comprises a PID controller, wherein the input end and the output end of the PID controller are respectively connected with a liquid level meter and an electric valve 5 in the desulfurizing tower 1.
The liquid level meter detects the liquid level height of the slurry in the desulfurizing tower.
The electric valve 5 controls the size of the outlet of the discharge pipeline, and slurry is prevented from depositing in the pipeline.
And the PID controller controls the opening of the electric valve 5 according to the difference value of the liquid level in the desulfurization tower.
The specific mode of the PID controller for controlling the opening degree of the valve is as follows:
a. when the liquid level of the desulfurizing tower rises and the liquid level difference is larger, the opening degree of the electric valve 5 is increased;
b. when the liquid level of the desulfurizing tower rises and the liquid level difference is smaller, the opening degree of the electric valve 5 is unchanged;
c. when the liquid level of the desulfurizing tower is reduced and the liquid level difference is larger, the opening degree of the electric valve 5 is reduced;
d. when the liquid level of the desulfurizing tower is reduced and the liquid level difference is smaller, the opening degree of the electric valve 5 is unchanged.
The manual outlet door is replaced by an electric adjusting door, and a PID control module is designed to adjust the size of the outlet valve according to the height of the liquid level of the absorption tower. The slurry entering the PH value and densimeter measuring pipeline is ensured to be updated and the deposition is reduced at will, and the stability of PH value and density value measurement is ensured.
Claims (10)
1. The utility model provides a desulfurizing tower pH value, density measurement system, includes desulfurizing tower (1), its characterized in that: desulfurizing tower (1) connects gradually densimeter (3) and PH measuring tank (2) through the pipeline, install PH meter (7) in PH measuring tank (2), the level of densimeter (3) is less than PH measuring tank (2) level, and the level of PH measuring tank (2) is less than desulfurizing tower (1) and pipe connection department's level, still be provided with the discharge pipe on desulfurizing tower (1) and be connected with pit (4).
2. The PH and density measurement system of a desulfurization tower of claim 1, wherein: the horizontal height of the interface between the desulfurizing tower (1) and the discharge pipeline is less than the height of the interface between the desulfurizing tower (1) and the pipeline.
3. The PH and density measurement system of a desulfurization tower of claim 1, wherein: an electric valve (5) is arranged on the discharge pipeline.
4. The PH and density measurement system of a desulfurization tower of claim 3, wherein: the electric valve (5) is controlled by a PID controller.
5. The PH and density measurement system of a desulfurization tower of claim 3, wherein: and a liquid level meter is arranged in the desulfurizing tower (1).
6. The utility model provides a prevent sedimentary PID control system of desulfurization tower survey pipeline thick liquid which characterized in that: the device comprises a PID controller, wherein the input end and the output end of the PID controller are respectively connected with a liquid level meter and an electric valve (5) in a desulfurizing tower (1).
7. The PID control system for measuring pipe slurry deposition of claim 6, wherein: the liquid level meter detects the liquid level height of the slurry in the desulfurizing tower.
8. The PID control system for measuring pipe slurry deposition of claim 6, wherein: the electric valve (5) controls the size of the outlet of the discharge pipeline, and slurry is prevented from depositing in the pipeline.
9. The PID control system for measuring pipe slurry deposition of claim 6, wherein: and the PID controller controls the opening of the electric valve (5) according to the difference value of the liquid level in the desulfurization tower.
10. The PID control system for measuring pipe slurry deposition of claim 9, wherein: the specific mode of the PID controller for controlling the opening degree of the valve is as follows:
a. the opening degree of the electric valve (5) is increased when the liquid level of the desulfurizing tower is increased and the liquid level difference is larger;
b. when the liquid level of the desulfurizing tower rises and the liquid level difference is smaller, the opening degree of the electric valve (5) is unchanged;
c. when the liquid level of the desulfurizing tower is reduced and the liquid level difference is larger, the opening degree of the electric valve (5) is reduced;
d. when the liquid level of the desulfurizing tower is reduced and the liquid level difference is smaller, the opening degree of the electric valve (5) is unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920418988.1U CN210090239U (en) | 2019-03-29 | 2019-03-29 | Desulfurizing tower pH value, density measurement system and control valve PID control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920418988.1U CN210090239U (en) | 2019-03-29 | 2019-03-29 | Desulfurizing tower pH value, density measurement system and control valve PID control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210090239U true CN210090239U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920418988.1U Active CN210090239U (en) | 2019-03-29 | 2019-03-29 | Desulfurizing tower pH value, density measurement system and control valve PID control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210090239U (en) |
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2019
- 2019-03-29 CN CN201920418988.1U patent/CN210090239U/en active Active
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