Multi-point sampling ammonia escape measurement and analysis device

Abstract

The utility model relates to the technical field of ammonia gas on-line monitoring, and discloses a multi-point sampling ammonia escape measuring and analyzing device which comprises a base, a high-temperature sampling pump is fixedly installed on one side of the upper surface of the base, a threaded connection pipe is arranged at one end of the high-temperature sampling pump, one end of the threaded connection pipe is fixedly connected with a detection pipeline, and the other end of the threaded connection pipe is fixedly connected with a pressure sensor. A filter assembly is arranged in the detection pipeline, and the filter assembly comprises a fixing ring, a gasket, a filter screen, a fixing frame, a limiting rod, a supporting spring and a guide rod. According to the multi-point sampling ammonia escape measurement and analysis device, impurity particles of gas are intercepted and filtered by arranging the filtering assembly, the situation that impurities and dust affect the accuracy of ammonia escape detection is avoided, and when injected air continuously impacts a filtering net, a buffering effect can be achieved through a limiting rod and a supporting spring, so that airflow impact is resisted; and by arranging the dust removal assembly, secondary dust removal can be conducted on the preliminarily filtered gas, and the dust removal effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia online monitoring, in particular to an ammonia escape measurement and analysis device with multi-point sampling. Background Technique

[0002] The phenomenon that there is unreacted ammonia in the flue gas at the outlet of the denitration reaction tower is called ammonia escape. The purpose of online ammonia escape monitoring is to prevent excessive ammonia injection, which causes waste to customers economically, prevent secondary pollution caused by excessive ammonia emissions, and at the same time, due to excessive ammonia, a large amount of ammonium salts will be generated in the wet flue gas desulfurization system. Therefore, a large amount of scaling occurs in the desulfurization system, seriously affecting the normal operation of the desulfurization system. Excessive ammonia will also cause serious corrosion to pipelines, pumps, valves, preheaters, etc. in the desulfurization system, which is also one of the difficult problems that ammonia-based desulfurization is difficult to overcome. Therefore, the monitoring of ammonia escape is not only important for the denitration system, but also for the downstream wet flue gas desulfurization system.

[0003] According to the patent application No. 202121431670.0, an online ammonia escape monitoring device is disclosed. This utility model has the advantages of being able to monitor ammonia escape in real time, having good monitoring effect, and being convenient for repairing and replacing the monitor. It solves the problems that the existing online ammonia escape detection devices generally have a relatively complex structure, unsatisfactory monitoring effect, and are not convenient for timely repair and replacement when the monitor is damaged, reducing the monitoring efficiency.

[0004] The following problems still exist in the actual use process:

[0005] Most of the existing online ammonia escape detection devices do not have an effective filtering device for other impurities and dust in the gas, resulting in low light transmittance and affecting the accuracy of ammonia escape monitoring. And some online ammonia escape detection devices, although they have a filtering device, often only intercept the dust in the air through a filter mesh plate, and fine dust in the air is still easy to pass through the filter mesh plate, with poor filtering effect. Content of the Utility Model

[0006] In view of the deficiencies of the prior art, the utility model provides an ammonia escape measurement and analysis device with multi-point sampling, which has the advantage of being able to effectively filter other impurities and dust in the gas, avoiding the influence of impurities and dust on the accuracy of ammonia escape monitoring, and solves the problems raised in the background technique.

[0007] The utility model provides the following technical solution: an ammonia escape measurement and analysis device with multi-point sampling, including a base, one side of the upper surface of the base is fixedly installed with a high-temperature sampling pump, one end of the high-temperature sampling pump is provided with a threaded connecting pipe, one end of the threaded connecting pipe is fixedly connected with a detection pipeline, and a filtering component is arranged inside the detection pipeline;

[0008] The filtering component includes a fixing ring, a gasket, a filter net, a fixing frame, a limiting rod, a supporting spring and a guiding rod. The fixing ring is arranged inside the detection pipeline. A gasket is arranged on the inner ring of the fixing ring. A filter net is arranged on the inner side of the gasket. A fixing frame is arranged on one side of the fixing ring. A limiting rod is arranged on one side of the filter net. A supporting spring is arranged on the surface of the limiting rod. Guiding rods are arranged on both sides of the filter net.

[0009] Preferably, a dust removal component is arranged on the surface of the detection pipeline. The dust removal component includes a water tank, an extraction pump, a diversion pipe, a spray head, a return pipe, a filter plate and a waste discharge port. A water tank is arranged inside the base. The extraction pump is fixedly installed on the outer side of the water tank. The output end of the extraction pump is fixedly connected with a diversion pipe. One end of the diversion pipe penetrates through the top of the detection pipeline and is fixedly connected with a spray head. The bottom of the detection pipeline is fixedly connected with a return pipe. The filter plate is fixedly connected inside the water tank. The waste discharge port is fixedly connected on one side of the water tank.

[0010] Preferably, the fixing ring is fixedly connected with the inner wall of the detection pipeline. The gasket is fixedly connected with the inner wall of the fixing ring. The filter net is fixedly connected with the inner wall of the gasket. The fixing frame is fixedly connected with one side of the fixing ring. The limiting rod is fixedly connected with one side of the filter net. The guiding rods are fixedly connected with both sides of the filter net.

[0011] Preferably, one end of the supporting spring is fixedly connected with the filter net, and the other end of the supporting spring is fixedly connected with the fixing frame.

[0012] Preferably, the bottom end of the limiting rod penetrates through one side of the fixing frame, and one end of the guiding rod penetrates through one side of the fixing frame.

[0013] Preferably, a heating plate is fixedly installed inside the detection pipeline. One end of the detection pipeline is fixedly connected with a shunt pipe. A shunt plate is fixedly connected inside the shunt pipe. An ammonia detector is installed on one side of the shunt pipe.

[0014] Preferably, a sealing plug is installed at one end of the waste discharge port.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. For the ammonia escape measurement and analysis device with multi-point sampling, by arranging a filtering component, the impurity particles of the gas are intercepted and filtered, so as to avoid impurities and dust from affecting the accuracy of ammonia escape detection. And when the injected air continuously impacts the filter net, the limiting rod and the supporting spring can play a buffering role to resist the air flow impact. At the same time, during the buffering process of the filter net, the limiting rod and the guiding rod can be driven to slide in the fixing frame, so as to limit the filter net and increase the stability.

[0017] 2. The multi-point sampling ammonia escape measurement and analysis device can perform secondary dust removal on the preliminarily filtered gas by setting up a dust removal component, enhancing the dust removal effect. By injecting dust removal liquid medicine into the water tank in advance and starting the extraction pump, the dust removal liquid medicine in the water tank can be sucked into the diversion pipe, and then atomized and sprayed through the nozzle to remove the fine dust in the filtered gas, performing secondary filtration on the air. The used liquid medicine flows back into the water tank through the return pipe for secondary use, reducing waste. Description of the Drawings

[0018] Figure 1 It is a schematic three-dimensional structure diagram of a multi-point sampling ammonia escape measurement and analysis device provided by the present utility model;

[0019] Figure 2 It is a schematic internal structure diagram of a multi-point sampling ammonia escape measurement and analysis device provided by the present utility model;

[0020] Figure 3 It is a schematic structure diagram of a filter component of a multi-point sampling ammonia escape measurement and analysis device provided by the present utility model;

[0021] Figure 4 It is a schematic structure diagram of a dust removal component of a multi-point sampling ammonia escape measurement and analysis device provided by the present utility model.

[0022] In the figure: 1. Base; 2. High-temperature sampling pump; 3. Threaded connecting pipe; 4. Detection pipeline; 5. Shunt pipe; 6. Ammonia detector; 7. Filter component; 71. Fixed ring; 72. Gasket; 73. Filter screen; 74. Fixed frame; 75. Limiting rod; 76. Support spring; 77. Guide rod; 8. Dust removal component; 81. Water tank; 82. Extraction pump; 83. Diversion pipe; 84. Nozzle; 85. Return pipe; 86. Filter plate; 87. Impurity discharge port; 9. Heating plate; 10. Shunt plate; 11. Sealing plug. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 3, An ammonia escape measurement and analysis device for multi-point sampling, including a base 1. On one side of the upper surface of the base 1, a high-temperature sampling pump 2 is fixedly installed. One end of the high-temperature sampling pump 2 is provided with a threaded connecting pipe 3. One end of the threaded connecting pipe 3 is fixedly connected to a detection pipeline 4. Inside the detection pipeline 4, a filtering component 7 is arranged. The filtering component 7 includes a fixing ring 71, a gasket 72, a filter net 73, a fixing frame 74, a limiting rod 75, a supporting spring 76, and a guiding rod 77. The fixing ring 71 is arranged inside the detection pipeline 4. Inside the inner ring of the fixing ring 71, the gasket 72 is arranged. Inside the inner side of the gasket 72, the filter net 73 is arranged. On one side of the fixing ring 71, the fixing frame 74 is arranged. On one side of the filter net 73, the limiting rod 75 is arranged. On the surface of the limiting rod 75, the supporting spring 76 is arranged. On both sides of the filter net 73, the guiding rods 77 are arranged;

[0025] By arranging the filtering component 7, the impurity particles of the gas are intercepted and filtered to avoid impurities and dust from affecting the accuracy of ammonia escape detection. And when the injected air continuously impacts the filter net 73, the limiting rod 75 and the supporting spring 76 can play a buffering role to resist the airflow impact.

[0026] Please refer to Figures 1 to 3 , The fixing ring 71 is fixedly connected to the inner wall of the detection pipeline 4. The gasket 72 is fixedly connected to the inner wall of the fixing ring 71. The filter net 73 is fixedly connected to the inner wall of the gasket 72. The fixing frame 74 is fixedly connected to one side of the fixing ring 71. The limiting rod 75 is fixedly connected to one side of the filter net 73. The guiding rods 77 are fixedly connected to both sides of the filter net 73. One end of the supporting spring 76 is fixedly connected to the filter net 73. The other end of the supporting spring 76 is fixedly connected to the fixing frame 74. The bottom end of the limiting rod 75 penetrates through one side of the fixing frame 74. One end of the guiding rod 77 penetrates through one side of the fixing frame 74;

[0027] During the buffering process, the filter net 73 can drive the limiting rod 75 and the guiding rod 77 to slide inside the fixing frame 74, thereby limiting the filter net 73 and increasing the stability.

[0028] Please refer to Figures 1 to 4 , On the surface of the detection pipeline 4, a dust removal component 8 is arranged. The dust removal component 8 includes a water tank 81, an extraction pump 82, a diversion pipe 83, a spray head 84, a return pipe 85, a filter plate 86, and a waste discharge port 87. Inside the base 1, the water tank 81 is opened. On the outside of the water tank 81, the extraction pump 82 is fixedly installed. The output end of the extraction pump 82 is fixedly connected to the diversion pipe 83. One end of the diversion pipe 83 penetrates through the top of the detection pipeline 4 and is fixedly connected to the spray head 84. The bottom of the detection pipeline 4 is fixedly connected to the return pipe 85. Inside the water tank 81, the filter plate 86 is fixedly connected. On one side of the water tank 81, the waste discharge port 87 is fixedly connected. At one end of the waste discharge port 87, a sealing plug 11 is installed;

[0029] By providing a dust removal component 8, the gas after preliminary filtration can be secondarily dust-removed to enhance the dust removal effect. The used liquid medicine flows back into the water tank 81 through the return pipe 85. The dust in the liquid medicine is filtered by the filter plate 86 in the water tank 81. The filtered impurities slide from the filter plate 86 into the impurity discharge port 87. By opening the sealing plug 11, the impurities can be cleaned up.

[0030] Please refer to Figure 2 , inside the detection pipeline 4, a heating plate 9 is fixedly installed. One end of the detection pipeline 4 is fixedly connected to a shunt pipe 5. Inside the shunt pipe 5, a shunt plate 10 is fixedly connected. On one side of the shunt pipe 5, an ammonia detector 6 is installed.

[0031] In the present utility model, the working principle of the device is as follows:

[0032] During use, the device is connected through the threaded connection pipe 3. The gas is introduced into the detection pipeline 4 through the threaded connection pipe 3. The impurity particles of the gas are intercepted and filtered by the filter net 73 to avoid impurities and dust from affecting the accuracy of ammonia escape detection. And when the injected air continuously impacts the filter net 73, a buffering effect can be achieved through the limiting rod 75 and the supporting spring 76 to resist the airflow impact. At the same time, during the buffering process of the filter net 73, the limiting rod 75 and the guiding rod 77 can be driven to slide inside the fixing frame 74, thereby limiting the filter net 73 and increasing stability.

[0033] After the gas is preliminarily filtered, it passes below the spray head 84. The dust removal liquid medicine is injected into the water tank 81 in advance. By starting the extraction pump 82 to operate, the dust removal liquid medicine in the water tank 81 can be sucked into the diversion pipe 83 and then atomized and sprayed out through the spray head 84 to remove the fine dust in the filtered gas and perform secondary filtration on the air. The used liquid medicine flows back into the water tank 81 through the return pipe 85, and the dust in the liquid medicine is filtered by the filter plate 86 and then flows back to the bottom of the water tank 81 for secondary use to reduce waste. After the dust-removed gas removes the residual water vapor through the heating plate 9, it is then shunted by the shunt plate 10 and finally detected, sampled, and analyzed through the ammonia detector 6 and the high-temperature sampling pump 2.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-point sampling ammonia escape measurement and analysis device, comprising a base (1), characterized in that: A high-temperature sampling pump (2) is fixedly mounted on one side of the upper surface of the base (1); a threaded connection pipe (3) is provided at one end of the high-temperature sampling pump (2); a detection pipe (4) is fixedly connected to one end of the threaded connection pipe (3); a filter assembly (7) is provided inside the detection pipe (4); The filter assembly (7) comprises a fixing ring (71), a gasket (72), a filter screen (73), a fixing frame (74), a limiting rod (75), a supporting spring (76) and a guide rod (77); the fixing ring (71) is arranged inside the detection pipe (4); the inner ring of the fixing ring (71) is provided with a gasket (72); the inner side of the gasket (72) is provided with a filter screen (73); a fixing frame (74) is provided on one side of the fixing ring (71); a limiting rod (75) is provided on one side of the filter screen (73); a supporting spring (76) is provided on the surface of the limiting rod (75); and guide rods (77) are provided on both sides of the filter screen (73).

2. The multi-point sampling ammonia escape measurement and analysis device according to claim 1, characterized in that: A dust removal component (8) is provided on the surface of the detection pipeline (4), and the dust removal component (8) comprises a water tank (81), an extraction pump (82), a guide pipe (83), a nozzle (84), a return pipe (85), a filter plate (86), and a debris discharge port (87). A water tank (81) is provided inside the base (1), an extraction pump (82) is fixedly installed on the outside of the water tank (81), the output end of the extraction pump (82) is fixedly connected to the guide pipe (83), one end of the guide pipe (83) passes through the top of the detection pipeline (4) and is fixedly connected to the nozzle (84), the bottom of the detection pipeline (4) is fixedly connected to the return pipe (85), the inside of the water tank (81) is fixedly connected to the filter plate (86), and one side of the water tank (81) is fixedly connected to the debris discharge port (87).

3. The multi-point sampling ammonia escape measurement and analysis device according to claim 1, characterized in that: The fixing ring (71) is fixedly connected to the inner wall of the detection pipe (4), the gasket (72) is fixedly connected to the inner wall of the fixing ring (71), the filter screen (73) is fixedly connected to the inner wall of the gasket (72), the fixing frame (74) is fixedly connected to one side of the fixing ring (71), the limiting rod (75) is fixedly connected to one side of the filter screen (73), and the guide rod (77) is fixedly connected to both sides of the filter screen (73).

4. The multi-point sampling ammonia escape measurement and analysis device according to claim 1, characterized in that: One end of the support spring (76) is fixedly connected to the filter screen (73), and the other end of the support spring (76) is fixedly connected to the fixing frame (74).

5. The multi-point sampling ammonia escape measurement and analysis device according to claim 1, characterized in that: The bottom end of the limiting rod (75) passes through one side of the fixing frame (74), and one end of the guide rod (77) passes through one side of the fixing frame (74).

6. The multi-point sampling ammonia escape measurement and analysis device according to claim 1, characterized in that: A heating plate (9) is fixedly installed inside the detection pipeline (4), a shunt pipe (5) is fixedly connected to one end of the detection pipeline (4), a shunt plate (10) is fixedly connected to the inside of the shunt pipe (5), and an ammonia detector (6) is installed on one side of the shunt pipe (5).

7. The multi-point sampling ammonia escape measurement and analysis device according to claim 2, characterized in that: A sealing plug (11) is installed at one end of the impurity discharge port (87).

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