Gasification furnace chilling chamber liquid level measuring device
By setting up a positive pressure side cleaning pipeline in the liquid level measuring device of the gasifier cooling chamber, the root valve is flushed, and the problem of blockage of the positive pressure side purge gas hood during the operation of the gasifier is solved, ensuring the accuracy of the liquid level gauge and the stable operation of the gasifier.
Patent Information
- Application Number
- CN202421660843.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-15
AI Technical Summary
When the gasifier is running for about 150 days, the purge gas hood on the positive pressure side is prone to blockage, resulting in inaccurate indication of the liquid level meter, affecting the normal operation of the gasifier.
A liquid level measuring device for the gasifier cooling chamber is designed. By setting up a positive pressure side cleaning pipeline, the positive pressure side root valve is flushed with high-quality regeneration water to avoid blockage of the blower.
Effectively prevent the pressure-taking pipeline from being blocked on the positive pressure side, ensure accurate indication of the liquid level gauge and accurate measurement, ensure normal operation of the gasifier interlock, and support the stable and long-term operation of the gasifier.
Smart Images
Figure CN222837638U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gasifiers, and in particular relates to a liquid level measuring device for a quenching chamber of a gasifier. Background Art
[0002] At present, the liquid level gauge in the quenching chamber of the gasifier is one of the important parameters for the normal operation of the gasifier. The relevant technology uses a double-flange differential pressure liquid level gauge to measure the liquid level in the quenching chamber. An air hood is installed on the positive pressure side of the liquid level gauge, equipped with purge gas, and a tee is installed on the negative pressure side, equipped with purge gas and flushing water. When the gasifier is in operation for about 150 days, the purge gas hood on the positive pressure side will be blocked, resulting in inaccurate indication of the liquid level gauge, and the interlock of the gasifier liquid level gauge cannot be put into use normally, affecting the normal operation of the gasifier. When the air hood is blocked, there is no effective way to solve it. The liquid level gauge indication can only be maintained for a short time by adjusting the opening of the purge gas. The interlock is released and on-site operations are frequent.
[0003] In order to solve the above technical problems, the utility model designs a liquid level measuring device for a gasification furnace quenching chamber. Utility Model Content
[0004] The utility model provides a liquid level measuring device for a quenching chamber of a gasifier, aiming to solve the problem that the blockage of a purge air hood on a positive pressure side affects the liquid level measurement in the quenching chamber of the gasifier.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid level measuring device for a gasifier quenching chamber, the gasifier quenching chamber includes a shell, the shell is provided with a positive pressure side pressure port and a negative pressure side pressure port, the liquid level measuring device includes a double flange differential pressure level gauge, a positive pressure side pressure taking pipeline, a positive pressure side cleaning pipeline and a negative pressure side pressure taking pipeline, the double flange differential pressure level gauge includes a positive pressure side interface and a negative pressure side interface; one end of the positive pressure side pressure taking pipeline is connected to the positive pressure side pressure taking port, and the other end is connected to the positive pressure side interface, the positive pressure side pressure taking pipeline is provided with a positive pressure side root valve, the positive pressure side cleaning pipeline is connected to the side of the positive pressure side root valve close to the positive pressure side pressure taking port, and is used for flushing the positive pressure side root valve; one end of the negative pressure side pressure taking pipeline is connected to the negative pressure side pressure taking port, and the other end is connected to the negative pressure side interface.
[0006] Based on the above technical solution, the positive pressure side cleaning pipeline is connected to the positive pressure side pressure taking pipeline through a three-way pipeline, and the positive pressure side root valve is arranged above the three-way pipeline so that the positive pressure side cleaning pipeline, the positive pressure side pressure taking port and the positive pressure side pressure taking pipeline are located on the same axis.
[0007] Optionally, the inner diameter of the positive-pressure side cleaning pipeline is the same as the inner diameter of the positive-pressure side pressure-taking pipeline.
[0008] Based on the above technical solution, the positive pressure side pressure taking pipeline is provided with a positive pressure side purge ring, and the positive pressure side purge ring is arranged on the side of the positive pressure side root valve away from the positive pressure side pressure taking port.
[0009] Based on the above technical solution, the gasifier quench chamber liquid level measuring device also includes a positive pressure side purge pipeline, the positive pressure side purge pipeline is provided with an air outlet end, and the air outlet end is connected to the positive pressure side purge ring.
[0010] Optionally, the gasifier quenching chamber liquid level measuring device also includes a negative pressure side cleaning pipeline, the negative pressure side pressure taking pipeline is provided with a negative pressure side root valve, the negative pressure side cleaning pipeline is connected to the side of the negative pressure side root valve close to the negative pressure side pressure taking port, and is used for flushing the negative pressure side root valve.
[0011] Based on the above technical solution, the liquid level measuring device of the gasifier quenching chamber also includes a rotor flowmeter, which is arranged in the positive pressure side cleaning pipeline and is used to detect the flow rate of cleaning water in the positive pressure side cleaning pipeline.
[0012] Compared with the related art, the beneficial effects of the utility model are as follows:
[0013] The utility model sets a positive pressure side cleaning pipeline and uses high-quality recycled water to flush the positive pressure side root valve. Compared with the related technology, the utility model eliminates the blowing hood on the positive pressure side, avoids the clogging of the blowing hood, and can prevent the clogging of the pressure taking pipeline on the positive pressure side, thereby ensuring the accurate indication and measurement of the liquid level gauge, the normal commissioning of the gasifier interlock, and the stable and long-term operation of the gasifier. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0015] Figure 1 The utility model is a structural schematic diagram of a liquid level measuring device for a gasification furnace quenching chamber.
[0016] In the figure: 1. Shell; 11. Pressure taking port on positive pressure side; 12. Pressure taking port on negative pressure side; 2. Double flange differential pressure level gauge; 21. Interface on positive pressure side; 22. Interface on negative pressure side; 3. Pressure taking pipeline on positive pressure side; 31. Root valve on positive pressure side; 32. Purge ring on positive pressure side; 4. Cleaning pipeline on positive pressure side; 5. Pressure taking pipeline on negative pressure side; 6. Three-way pipeline; 7. Purge pipeline on positive pressure side; 8. Cleaning pipeline on negative pressure side; 81. Root valve on negative pressure side. DETAILED DESCRIPTION
[0017] The utility model is further described below with reference to the accompanying drawings and examples:
[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] Combination Figure 1 As shown, the embodiment of the present disclosure provides a liquid level measuring device for a gasifier quenching chamber, the gasifier quenching chamber comprises a shell 1, the shell 1 is provided with a positive pressure side pressure port 11 and a negative pressure side pressure port 12, the liquid level measuring device comprises a double flange differential pressure level gauge 2, a positive pressure side pressure taking pipeline 3, a positive pressure side cleaning pipeline 4 and a negative pressure side pressure taking pipeline 5, the double flange differential pressure level gauge 2 comprises a positive pressure side interface 21 and a negative pressure side interface 22; the positive pressure side pressure taking pipeline 3, a positive pressure side cleaning pipeline 4 and a negative pressure side pressure taking pipeline 5, the double flange differential pressure level gauge 2 comprises a positive pressure side interface 21 and a negative pressure side interface 22; the positive pressure side pressure taking pipeline 3, a positive pressure side cleaning pipeline 4 and a negative pressure side pressure taking pipeline 5; the positive pressure side pressure taking pipeline 3, a ... One end of the positive pressure side pressure taking pipeline 3 is connected to the positive pressure side pressure taking port 11, and the other end is connected to the positive pressure side interface 21. The positive pressure side pressure taking pipeline 3 is provided with a positive pressure side root valve 31. The positive pressure side cleaning pipeline 4 is connected to the side of the positive pressure side root valve 31 close to the positive pressure side pressure taking port 11, and is used for flushing the positive pressure side root valve 31; one end of the negative pressure side pressure taking pipeline 5 is connected to the negative pressure side pressure taking port 12, and the other end is connected to the negative pressure side interface 22.
[0022] By adopting the liquid level measuring device for the quenching chamber of the gasifier provided by the embodiment of the present disclosure, a positive pressure side cleaning pipeline 4 is set, and high-quality recycled water is used to flush the positive pressure side root valve 31. Compared with the related art, the blowing hood on the positive pressure side is eliminated to avoid the clogging of the blowing hood, and the clogging of the pressure taking pipeline on the positive pressure side can be prevented, thereby ensuring the accurate indication and measurement of the liquid level gauge, the normal commissioning of the gasifier interlock, and the stable and long-term operation of the gasifier.
[0023] Based on the above technical solution, the positive pressure side cleaning pipeline 4 is connected to the positive pressure side pressure taking pipeline 3 through a three-way pipeline 6, and the positive pressure side root valve 31 is arranged above the three-way pipeline 6 so that the positive pressure side cleaning pipeline 4 and the positive pressure side pressure taking port 11 and the positive pressure side pressure taking pipeline 3 are located on the same axis.
[0024] Preferably, the positive-pressure side pressure tapping port 11 and the three-way pipe are connected by bolts, the three-way pipe and the positive-pressure side root valve 31 are connected by bolts, and the three-way pipe and the positive-pressure side cleaning pipeline 4 are connected by bolts.
[0025] Optionally, the inner diameter of the positive-pressure side cleaning pipeline 4 is the same as the inner diameter of the positive-pressure side pressure-taking pipeline 3 .
[0026] Based on the above technical solution, the positive pressure side pressure taking pipeline 3 is provided with a positive pressure side purge ring 32 , and the positive pressure side purge ring 32 is arranged on the side of the positive pressure side root valve 31 away from the positive pressure side pressure taking port 11 .
[0027] On the basis of the above technical solution, the liquid level measuring device of the gasifier quenching chamber further comprises a positive pressure side purge pipeline 7 , wherein the positive pressure side purge pipeline 7 is provided with a gas outlet end, and the gas outlet end is connected to the positive pressure side purge ring 32 .
[0028] Specifically, the positive-pressure side purge pipeline 7 is used to purge high-pressure carbon dioxide, and a stop valve is provided on the positive-pressure side purge pipeline 7 .
[0029] Optionally, the gasifier quenching chamber liquid level measuring device also includes a negative pressure side cleaning pipeline 8, and the negative pressure side pressure taking pipeline 5 is provided with a negative pressure side root valve 81. The negative pressure side cleaning pipeline 8 is connected to the side of the negative pressure side root valve 81 close to the negative pressure side pressure taking port 12 for flushing the negative pressure side root valve 81.
[0030] On the basis of the above technical solution, the liquid level measuring device of the gasifier quenching chamber further comprises a rotor flowmeter, which is arranged in the positive pressure side cleaning pipeline 4 and is used to detect the flow rate of the cleaning water in the positive pressure side cleaning pipeline 4.
[0031] In the related technology, a double-flange differential pressure level gauge 2 is used to measure the liquid level in the quench chamber. A blow hood is installed on the positive pressure side of the level gauge, equipped with purge gas (high-pressure carbon dioxide), and a tee is installed on the negative pressure side, equipped with purge gas (high-pressure carbon dioxide) and flushing water (high-quality recycled water). The distance between the positive and negative pressure side flanges of the level gauge is 4.2m. When the gasifier is running with coal, the density of the liquid medium in the quench chamber is 0.84kg / cm 3 , so the liquid level meter range ΔP=ρgh=0.84*9.8*4.2=34.5. Due to the addition of a blowing hood on the positive pressure side, when the purge gas is put into use, the positive pressure side diaphragm box to the bottom of the blowing hood is completely filled with carbon dioxide gas, so the liquid level meter needs to be positively migrated. Since the vertical distance from the bottom of the liquid level meter blowing hood to the positive pressure side diaphragm box is 1.23m, the migration amount ΔP1=ρgh1=0.84*9.8*1.23=10.29. After the gasifier liquid level meter is installed, when the gasifier does not enter the medium and the pressure in the furnace is zero, record the pressure difference ΔP2 of the gasifier liquid level meter head. In summary, the lower limit of the quenching chamber liquid level meter range is ΔP2+ΔP1, and the upper limit is ΔP2+ΔP1+ΔP.
[0032] In this application, the distance between the positive and negative pressure side flanges of the level gauge is 4.2m, and the density of the liquid medium in the quenching chamber when the gasifier is running with coal is 0.84kg / cm 3 , so the liquid level meter range ΔP=ρgh=0.84*9.8*4.2=34.5. After the gasifier liquid level meter is installed, when the gasifier does not enter the medium and the pressure in the furnace is zero, record the pressure difference ΔP1 of the gasifier liquid level meter head. In summary, the lower limit of the quenching chamber liquid level meter range is ΔP1, and the upper limit is ΔP1+ΔP.
[0033] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.
Claims
1. A liquid level measuring device for a gasifier quenching chamber, characterized in that: The gasifier quenching chamber includes a shell, which is provided with a positive pressure side pressure port and a negative pressure side pressure port. The liquid level measuring device includes a double flange differential pressure level gauge, a positive pressure side pressure taking pipeline, a positive pressure side cleaning pipeline and a negative pressure side pressure taking pipeline. The double flange differential pressure level gauge includes a positive pressure side interface and a negative pressure side interface; one end of the positive pressure side pressure taking pipeline is connected to the positive pressure side pressure taking port, and the other end is connected to the positive pressure side interface. The positive pressure side pressure taking pipeline is provided with a positive pressure side root valve, and the positive pressure side cleaning pipeline is connected to the side of the positive pressure side root valve close to the positive pressure side pressure taking port for flushing the positive pressure side root valve; one end of the negative pressure side pressure taking pipeline is connected to the negative pressure side pressure taking port, and the other end is connected to the negative pressure side interface.
2. The liquid level measuring device for the quenching chamber of a gasifier according to claim 1, characterized in that: The positive pressure side cleaning pipeline is connected to the positive pressure side pressure taking pipeline through a three-way pipeline, and the positive pressure side root valve is arranged above the three-way pipeline so that the positive pressure side cleaning pipeline, the positive pressure side pressure taking port and the positive pressure side pressure taking pipeline are located on the same axis.
3. The liquid level measuring device for the quenching chamber of a gasifier according to claim 1, characterized in that: The inner diameter of the positive-pressure side cleaning pipeline is the same as the inner diameter of the positive-pressure side pressure-taking pipeline.
4. The liquid level measuring device for the quenching chamber of a gasifier according to claim 1, characterized in that: The positive pressure side pressure taking pipeline is provided with a positive pressure side purge ring, and the positive pressure side purge ring is arranged on a side of the positive pressure side root valve away from the positive pressure side pressure taking port.
5. The liquid level measuring device for the quenching chamber of a gasifier according to claim 4, characterized in that: It also includes a positive-pressure side purge pipeline, which is provided with an air outlet end, and the air outlet end is connected to the positive-pressure side purge ring.
6. The liquid level measuring device for the quenching chamber of a gasifier according to any one of claims 1 to 5, characterized in that: It also includes a negative pressure side cleaning pipeline, which is provided with a negative pressure side root valve. The negative pressure side cleaning pipeline is connected to the side of the negative pressure side root valve close to the negative pressure side pressure taking port and is used for flushing the negative pressure side root valve.
7. The liquid level measuring device for the quenching chamber of a gasifier according to any one of claims 1 to 5, characterized in that: It also includes a rotor flowmeter, which is arranged in the positive-pressure side cleaning pipeline and is used to detect the flow rate of cleaning water in the positive-pressure side cleaning pipeline.