Reaction kettle leak detection mechanism

Abstract

The utility model relates to a reaction kettle leak detection mechanism, and relates to the technical field of reaction kettles, the reaction kettle leak detection mechanism comprises a nitrogen cylinder, a helium cylinder, a first pipeline, a helium concentration detection device and a vacuumizer, the gas outlet end of the first pipeline is communicated with a gas inlet of a reaction kettle, and a second pipeline is communicated between the nitrogen cylinder and the first pipeline; a third pipeline is arranged between the helium tank and the first pipeline in a communicating manner; a fourth pipeline is arranged between the vacuumizer and the exhaust port of the reaction kettle in a communicating manner; a first air inlet valve is mounted on the first pipeline, a second air inlet valve and a second air pump are mounted on the second pipeline, and a third air inlet valve and a third air pump are mounted on the third pipeline; a helium concentration sensor and a display are fixedly mounted on the helium concentration detection device, and the signal input end of the display is in signal connection with the signal output end of the helium concentration sensor; and a console and an inflation control module. The leak detection efficiency of the reaction kettle can be improved.

Description

Technical Field

[0001] The present application relates to the field of reactors, and in particular to a reactor leakage detection mechanism. Background Art

[0002] Reactors are broadly understood as containers for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process are realized. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, and condensation, such as reactors, reaction pots, decomposition pots, polymerization kettles, etc.; the materials are generally carbon-manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys and other composite materials.

[0003] During the long-term use of the reactor, it is inevitable that there will be damage and leakage. The high-pressure reactor does not leak under a certain pressure, but leaks when the pressure is high, especially the leakage in the gap between the reactor cover and the reactor body. In the prior art, the reactor is mainly leaked by using a nitrogen bottle and soapy water. When checking the air tightness, first check whether each valve (solid feed port, reactor cover exhaust valve, air inlet valve, etc.) is tightened, and do not use too much force; connect the nitrogen cylinder and the reactor's air inlet pipe, tighten the relevant screws; connect the vacuum pump and the reactor's exhaust port, and vacuum the reactor. Then open the main valve and pressure-dividing valve of the nitrogen bottle, first adjust the pressure of the pressure-dividing valve to the pressure required for the experiment, then open the air inlet valve of the high-pressure reactor to allow the gas to slowly fill the reactor. When the pressure value displayed on the reactor is the same as the set pressure on the nitrogen bottle and no longer changes, close the air inlet valve of the reactor and the air outlet valve of the nitrogen bottle in sequence. At the same time, the operator sprays soapy water on the joint between the reactor cover and the reactor body, and determines whether there is a leak in the reactor by observing whether the soapy water bubbles.

[0004] However, after using soapy water to detect leaks in the reactor, the operator needs to use ionized water to clean the soapy water attached to the reactor body and lid to prevent the soapy water from contaminating the reactor. It is easy for the soapy water to not be cleaned thoroughly, and the leak detection efficiency is low, so there is room for improvement. Utility Model Content

[0005] In order to improve the efficiency of leak detection operation on a reactor, the present application provides a leak detection mechanism for a reactor.

[0006] The present application provides a reactor leak detection mechanism that adopts the following technical solution:

[0007] A reactor leak detection mechanism comprises a nitrogen cylinder, a helium cylinder, a first pipeline, a helium concentration detection device and a vacuum pump, wherein the gas outlet end of the first pipeline is connected to the gas inlet of the reactor, a second pipeline is connected between the nitrogen cylinder and the first pipeline, a third pipeline is connected between the helium cylinder and the first pipeline, and a fourth pipeline is connected between the vacuum pump and the exhaust port of the reactor;

[0008] The first pipeline is provided with a first air intake valve, the second pipeline is provided with a second air intake valve and a second air pump, and the third pipeline is provided with a third air intake valve and a third air pump;

[0009] The helium concentration detection device is fixedly mounted with a helium concentration sensor and a display, wherein a signal input end of the display is signal-connected to a signal output end of the helium concentration sensor; and:

[0010] A control console, wherein a signal output end is signal-connected to the first air inlet valve, the second air inlet valve, the second air pump, the third air inlet valve, the third air pump and the signal input end of the vacuum pump, and is used to input an inflation control signal;

[0011] The inflation control module, whose signal output end is connected to the first air intake valve, the second air intake valve, the second air pump, the third air intake valve and the signal input end of the third air pump, is used to stop inflating the reactor when the actual air pressure inside the reactor reaches the set air pressure.

[0012] By adopting the above technical solution, during the leak detection operation on the reactor, the operator can control the vacuum pump through the console to vacuum the reactor to extract the air in the reactor; then the operator inputs the inflation control signal and the set air pressure signal through the console, and the first air inlet valve, the second air inlet valve, and the third air inlet valve are simultaneously opened to connect the first pipeline, the second pipeline and the third pipeline, and the second air pump and the third air pump are simultaneously started to fill the reactor with nitrogen and helium mixed gas; when the actual air pressure in the reactor reaches the set air pressure, the inflation control module controls the first air inlet valve, the second air pump, the third air inlet valve and the third air pump to close, and stop filling the reactor with gas. After the inflation is completed, the operator can hold the helium concentration detection device and slide it at a constant speed along the joint between the kettle body and the kettle cover so that the helium concentration sensor passes through the joint between the kettle body and the kettle cover at a constant speed. Through the display on the helium concentration detection device, the operator can observe in real time whether there is a leak in the joint between the kettle cover and the kettle body, which can effectively reduce the operation of spraying soapy water and cleaning soapy water, and improve the efficiency and accuracy of leak detection operations.

[0013] Preferably, the helium concentration detection device comprises a gripping portion, and two rotating shafts are rotatably mounted on the bottom of the gripping portion, and rollers are fixedly connected to both ends of the two rotating shafts respectively;

[0014] The bottom of the gripping portion is provided with a mounting groove, the helium concentration sensor is embedded and fixed in the mounting groove, and the helium concentration sensor detects the helium concentration at the joint between the kettle cover and the kettle body and outputs a helium concentration signal;

[0015] The display is fixedly mounted on the top of the gripping portion, a buzzer is fixedly mounted on the top of the gripping portion, a signal output end of the helium concentration sensor is signal-connected to a comparator chip, a signal output end of the comparator chip is signal-connected to a signal input end of the buzzer, the comparator chip receives and compares the helium concentration signal, and outputs a high-level signal when the helium concentration is greater than a set value, and the buzzer receives the high-level signal and emits a warning sound.

[0016] By adopting the above technical solution, in the actual leak detection process, the operator holds the grip and makes the grip and the roller at the bottom of the grip fit on the kettle body and the kettle cover. When the operator slides the grip at a uniform speed, the helium concentration sensor installed in the mounting groove of the grip can be driven to pass through the joint between the kettle body and the kettle cover at a uniform speed. If there is a leak in the joint between the kettle body and the kettle cover, the helium concentration is high, and the comparator chip controls the buzzer to emit a warning sound, which can assist the operator to quickly locate the leak at the joint between the kettle cover and the kettle body. In the process of leak detection, the grip is slid on the kettle cover and the kettle body through the roller, which can ensure the stability of the distance between the helium concentration sensor and the joint, ensure the accuracy of the detection results, and make the operator's sliding of the grip more labor-saving.

[0017] Preferably, grooves for holding are respectively formed on both sides of the holding portion.

[0018] By adopting the above technical solution, the grooves on both sides of the gripping part can reduce the occurrence of the gripping part slipping when the operator moves the gripping part.

[0019] Preferably, a non-slip silicone pad is fixedly installed in the groove.

[0020] By adopting the above technical solution, the anti-slip silicone pad can further reduce the occurrence of the grip part slipping from the operator's hand.

[0021] Preferably, the inflation control module comprises:

[0022] The barometer is fixedly installed on the reactor to detect the internal air pressure of the reactor and output the actual air pressure signal;

[0023] A single chip microcomputer, whose signal input terminal is signal-connected to the signal output terminal of the barometer, is used to receive the actual air pressure signal and output a closing control signal when the actual air pressure reaches the set air pressure, and the first air intake valve, the second air intake valve, the second air pump, the third air intake valve and the third air pump receive the closing control signal and close;

[0024] The LED indicator light is fixedly mounted on the console, and its signal input terminal is connected to the signal output terminal of the single chip computer, and is used for receiving the shutdown control signal and emitting light.

[0025] By adopting the above technical solution, the barometer and the single-chip microcomputer can be used together to detect the air pressure inside the reactor. When the air pressure inside the reactor reaches the required pressure, the single-chip microcomputer controls the first air inlet valve, the second air inlet valve, the second air pump, the third air inlet valve and the third air pump to close and stop charging the reactor. When the charging is completed, the operator can observe whether the charging is completed through the status of the LED indicator.

[0026] In summary, the present invention provides a reactor leak detection mechanism having at least one of the following beneficial technical effects:

[0027] 1. During the leak detection operation on the reactor, the operator can control the vacuum pump through the console to vacuum the reactor to extract the air in the reactor; then the operator inputs the inflation control signal and the set air pressure signal through the console, and the first air inlet valve, the second air inlet valve, and the third air inlet valve are opened at the same time to connect the first pipeline, the second pipeline and the third pipeline, and the second air pump and the third air pump are started at the same time to fill the reactor with nitrogen and helium mixed gas; when the actual air pressure in the reactor reaches the set air pressure, the inflation control module controls The first air inlet valve, the second air inlet valve, the second air pump, the third air inlet valve and the third air pump are closed, and the filling of gas into the reactor is stopped. When the filling is completed, the operator can hold the helium concentration detection device and slide it uniformly along the joint between the reactor body and the reactor cover so that the helium concentration sensor passes through the joint between the reactor body and the reactor cover at a uniform speed. Through the display on the helium concentration detection device, the operator can observe in real time whether there is leakage at the joint between the reactor cover and the reactor body, which can effectively reduce the operation of spraying soap water and washing soap water, and improve the efficiency and accuracy of the leak detection operation;

[0028] 2. The operator holds the gripping part and makes the gripping part and the roller at the bottom of the gripping part fit on the kettle body and the kettle cover. When the operator slides the gripping part at a uniform speed, the helium concentration sensor installed in the mounting groove of the gripping part can be driven to pass through the joint between the kettle body and the kettle cover at a uniform speed. If there is a leak in the joint between the kettle body and the kettle cover, the helium concentration is high, and the comparator chip controls the buzzer to issue a warning sound, which can assist the operator to quickly locate the leakage at the joint between the kettle cover and the kettle body. In the process of leak detection, the gripping part is slid on the kettle cover and the kettle body through the roller, which can ensure the stability of the distance between the helium concentration sensor and the joint, ensure the accuracy of the detection result, and make the operator's sliding operation of the gripping part more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an embodiment of the present application for demonstrating the overall connection relationship of the leakage detection mechanism.

[0030] Figure 2 It is a schematic diagram of an embodiment of the present application for demonstrating the overall structure of a helium concentration detection device.

[0031] Explanation of the reference numerals: 1. nitrogen cylinder; 11. second pipeline; 12. second air inlet valve; 13. second air pump; 2. helium cylinder; 21. third pipeline; 22. third air inlet valve; 23. third air pump; 3. first pipeline; 31. first air inlet valve; 4. vacuum pump; 41. fourth pipeline; 5. reactor; 6. helium concentration detection device; 61. helium concentration sensor; 62. display; 63. grip; 64. rotating shaft; 65. roller; 66. buzzer; 67. groove; 68. non-slip silicone pad; 7. barometer. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-2 This application is described in further detail.

[0033] Example

[0034] The present application embodiment discloses a reactor leak detection mechanism. Figure 1 It mainly includes a nitrogen cylinder 1, a helium cylinder 2, a first pipeline 3, a helium concentration detection device 6 and a vacuum pump 4. The gas outlet end of the first pipeline 3 is connected to the gas inlet of the reactor 5. A second pipeline 11 is connected between the nitrogen cylinder 1 and the first pipeline 3. A third pipeline 21 is connected between the helium cylinder 2 and the first pipeline 3. A fourth pipeline 41 is connected between the vacuum pump 4 and the exhaust port of the reactor 5.

[0035] A first air intake valve 31 is installed on the first pipeline 3, a second air intake valve 12 and a second air pump 13 are installed on the second pipeline 11, and a third air intake valve 22 and a third air pump 23 are installed on the third pipeline 21; a helium concentration sensor 61 and a display 62 are fixedly installed on the helium concentration detection device 6, and a signal input end of the display 62 is signal-connected to a signal output end of the helium concentration sensor 61.

[0036] And: a control console, whose signal output end is signal-connected with the signal input end of the first air intake valve 31, the second air intake valve 12, the second air pump 13, the third air intake valve 22, the third air pump 23 and the vacuum machine 4, for inputting an inflation control signal; an inflation control module, whose signal output end is signal-connected with the signal input end of the first air intake valve 31, the second air intake valve 12, the second air pump 13, the third air intake valve 22 and the third air pump 23, for stopping inflation into the reactor 5 when the actual air pressure inside the reactor 5 reaches the set air pressure.

[0037] During the process of leak detection on the reactor 5 , the operator can control the vacuum pump 4 through the control console to perform vacuum processing on the reactor 5 to extract the air in the reactor 5 .

[0038] Then the operator inputs the inflation control signal and the set air pressure signal through the console, and the first air inlet valve 31, the second air inlet valve 12, and the third air inlet valve 22 are simultaneously opened to connect the first pipeline 3, the second pipeline 11, and the third pipeline 21, and the second air pump 13 and the third air pump 23 are simultaneously started to fill the reactor 5 with nitrogen and helium mixed gas.

[0039] When the actual air pressure in the reactor 5 reaches the set air pressure, the inflation control module controls the first air intake valve 31 , the second air intake valve 12 , the second air pump 13 , the third air intake valve 22 and the third air pump 23 to close, and stops inflating gas into the reactor 5 .

[0040] After the inflation is completed, the operator can hold the helium concentration detection device 6 and slide it at a constant speed along the joint between the kettle body and the kettle cover so that the helium concentration sensor 61 passes through the joint between the kettle body and the kettle cover at a constant speed. Through the display 62 on the helium concentration detection device 6, the operator can observe in real time whether there is a leak in the joint between the kettle cover and the kettle body, which can effectively reduce the operation of spraying soapy water and cleaning soapy water, and improve the efficiency and accuracy of the leak detection operation.

[0041] It should be noted that in the embodiment of the present application, a mixed gas of nitrogen and helium is used to fill the reactor. The helium is quickly dispersed into the reactor and can be detected by a helium concentration sensor as a tracer gas. The cost of nitrogen is low, which can save the cost of leak detection in the reactor.

[0042] Reference Figure 2The helium concentration detection device 6 includes a gripping portion 63 , and two rotating shafts 64 are rotatably mounted at the bottom of the gripping portion 63 , and rollers 65 are fixedly connected to both ends of the two rotating shafts 64 .

[0043] A mounting groove is provided at the bottom of the gripping portion 63, and the helium concentration sensor 61 is embedded and fixed in the mounting groove. The helium concentration sensor 61 detects the helium concentration at the joint between the kettle cover and the kettle body and outputs a helium concentration signal.

[0044] The display 62 is fixedly mounted on the top of the grip 63, a buzzer 66 is fixedly mounted on the top of the grip 63, the signal output end of the helium concentration sensor 61 is connected to a comparator chip, the signal output end of the comparator chip is connected to the signal input end of the buzzer 66, the comparator chip receives and compares the helium concentration signal, and outputs a high level signal when the helium concentration is greater than a set value, the buzzer 66 receives the high level signal and emits a warning sound.

[0045] In the actual leak detection process, the operator holds the grip 63 and makes the grip 63 and the roller 65 at the bottom of the grip 63 fit on the kettle body and the kettle cover. When the operator slides the grip 63 at a uniform speed, the helium concentration sensor 61 installed in the mounting groove of the grip 63 can be driven to pass through the joint between the kettle body and the kettle cover at a uniform speed. If there is a leak in the joint between the kettle body and the kettle cover, the helium concentration is high, and the comparator chip controls the buzzer 66 to emit a warning sound, which can assist the operator to quickly locate the leak at the joint between the kettle cover and the kettle body. In the leak detection process, the grip 63 is slid on the kettle cover and the kettle body through the roller 65, which can ensure the stability of the distance between the helium concentration sensor 61 and the joint, ensure the accuracy of the detection result, and make the operator's sliding grip 63 more labor-saving.

[0046] Reference Figure 2 In the embodiment of the present application, grooves 67 for holding are respectively provided on both sides of the gripping portion 63. The grooves 67 on both sides of the gripping portion 63 can reduce the occurrence of the gripping portion 63 slipping when the operator moves the gripping portion 63.

[0047] Reference Figure 2 In the embodiment of the present application, a non-slip silicone pad 68 is fixedly installed in the groove 67. The non-slip silicone pad 68 can further reduce the occurrence of the grip 63 slipping from the operator's hand.

[0048] In the embodiment of the present application, the inflation control module includes: a barometer 7, fixedly mounted on the reactor 5, for detecting the internal air pressure of the reactor 5 and outputting an actual air pressure signal; a single-chip microcomputer, whose signal input end is signal-connected to the signal output end of the barometer 7, for receiving the actual air pressure signal and outputting a closing control signal when the actual air pressure reaches the set air pressure, and the first air intake valve 31, the second air intake valve 12, the second air pump 13, the third air intake valve 22 and the third air pump 23 receive the closing control signal and close; an LED indicator light, fixedly mounted on the console, whose signal input end is signal-connected to the signal output end of the single-chip microcomputer, for receiving the closing control signal and emitting light.

[0049] The barometer 7 and the single-chip microcomputer cooperate with each other to detect the internal air pressure of the reactor 5. When the internal air pressure of the reactor 5 reaches the required air pressure, the single-chip microcomputer controls the first air inlet valve 31, the second air inlet valve 12, the second air pump 13, the third air inlet valve 22 and the third air pump 23 to close and stop charging the reactor 5. When the charging is completed, the operator can observe whether the charging is completed through the state of the LED indicator.

[0050] The implementation principle of a reactor leak detection mechanism in the embodiment of the present application is as follows: during the leak detection operation on the reactor 5, the operator can control the vacuum pump 4 through the console to vacuum the reactor 5 to extract the air in the reactor 5; then the operator inputs the inflation control signal and the set air pressure signal through the console, and the first air inlet valve 31, the second air inlet valve 12, and the third air inlet valve 22 are simultaneously opened to connect the first pipeline 3, the second pipeline 11 and the third pipeline 21, and the second air pump 13 and the third air pump 23 are simultaneously started to fill the reactor 5 with a nitrogen-helium mixed gas; when the actual air pressure in the reactor 5 reaches the set pressure, the pressure in the reactor 5 will be reduced, and the pressure in the reactor 5 will be reduced. When the air pressure is low, the inflation control module controls the first air inlet valve 31, the second air inlet valve 12, the second air pump 13, the third air inlet valve 22 and the third air pump 23 to close, and stops charging gas into the reactor 5. When the inflation is completed, the operator can hold the helium concentration detection device 6 and slide it at a uniform speed along the joint between the reactor body and the reactor cover so that the helium concentration sensor 61 passes through the joint between the reactor body and the reactor cover at a uniform speed. Through the display 62 on the helium concentration detection device 6, the operator can observe in real time whether there is a leak in the joint between the reactor cover and the reactor body, which can effectively reduce the operation of spraying soapy water and cleaning soapy water, and improve the efficiency and accuracy of the leak detection operation.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reactor leak detection mechanism, characterized in that: The invention comprises a nitrogen cylinder (1), a helium cylinder (2), a first pipeline (3), a helium concentration detection device (6) and a vacuum pump (4), wherein the gas outlet end of the first pipeline (3) is connected to the gas inlet of a reaction kettle (5), a second pipeline (11) is provided between the nitrogen cylinder (1) and the first pipeline (3), a third pipeline (21) is provided between the helium cylinder (2) and the first pipeline (3), and a fourth pipeline (41) is provided between the vacuum pump (4) and the gas outlet of the reaction kettle (5); The first pipeline (3) is equipped with a first air intake valve (31), the second pipeline (11) is equipped with a second air intake valve (12) and a second air pump (13), and the third pipeline (21) is equipped with a third air intake valve (22) and a third air pump (23); A helium concentration sensor (61) and a display (62) are fixedly mounted on the helium concentration detection device (6), and a signal input end of the display (62) is signal-connected to a signal output end of the helium concentration sensor (61); as well as: A control console, wherein a signal output end is signal-connected to the signal input ends of the first air intake valve (31), the second air intake valve (12), the second air pump (13), the third air intake valve (22), the third air pump (23) and the vacuum pump (4), and is used to input an inflation control signal; An inflation control module, wherein a signal output end is signal-connected to the first air inlet valve (31), the second air inlet valve (12), the second air pump (13), the third air inlet valve (22) and the signal input end of the third air pump (23), and is used to stop inflating the reactor (5) when the actual air pressure inside the reactor (5) reaches a set air pressure.

2. A reactor leak detection mechanism according to claim 1, characterized in that: The helium concentration detection device (6) comprises a gripping portion (63), two rotating shafts (64) are rotatably mounted on the bottom of the gripping portion (63), and rollers (65) are fixedly connected to both ends of the two rotating shafts (64) respectively; The bottom of the gripping portion (63) is provided with a mounting groove, and the helium concentration sensor (61) is embedded and fixed in the mounting groove. The helium concentration sensor (61) detects the helium concentration at the joint between the kettle cover and the kettle body and outputs a helium concentration signal; The display (62) is fixedly mounted on the top of the holding portion (63); a buzzer (66) is fixedly mounted on the top of the holding portion (63); a signal output end of the helium concentration sensor (61) is signal-connected to a comparator chip; the signal output end of the comparator chip is signal-connected to a signal input end of the buzzer (66); the comparator chip receives and compares the helium concentration signal and outputs a high-level signal when the helium concentration is greater than a set value; the buzzer (66) receives the high-level signal and emits a warning sound.

3. A reactor leak detection mechanism according to claim 2, characterized in that: Grooves (67) for holding are respectively formed on both sides of the holding portion (63).

4. A reactor leak detection mechanism according to claim 3, characterized in that: An anti-slip silicone pad (68) is fixedly installed in the groove (67).

5. A reactor leak detection mechanism according to claim 2, characterized in that: The inflation control module comprises: A barometer (7) is fixedly mounted on the reaction kettle (5) and is used to detect the internal air pressure of the reaction kettle (5) and output an actual air pressure signal; A single chip computer, the signal input end of which is signal-connected to the signal output end of the barometer (7), for receiving the actual air pressure signal and outputting a closing control signal when the actual air pressure reaches the set air pressure, wherein the first air intake valve (31), the second air intake valve (12), the second air pump (13), the third air intake valve (22) and the third air pump (23) receive the closing control signal and close; The LED indicator light is fixedly mounted on the console, and its signal input terminal is connected to the signal output terminal of the single chip computer, and is used for receiving the shutdown control signal and emitting light.

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