Device and method for measuring gas evolution amount of calcium carbide

Abstract

The invention provides a calcium carbide gas generation amount measuring device and method.The calcium carbide gas generation amount measuring device comprises a gas generation tank, a feeding part, a gas inflation part and a detection part, a sealing cavity is formed in the gas generation tank, the feeding part, the gas inflation part and the detection part are connected with the gas generation tank, the feeding part is used for adding reaction raw materials into the sealing cavity, the gas inflation part is used for introducing flame-retardant gas into the sealing cavity, and the detection part is used for detecting the gas generation amount of calcium carbide; the detection part is used for acquiring environmental parameter information in the sealing cavity; the reaction raw materials comprise calcium carbide and reaction liquid, and the environmental parameter information comprises pressure information and temperature information. By arranging the feeding part, reaction raw materials can be fed into the sealing cavity. By arranging the detection part, the environmental parameters in the sealing cavity can be obtained, a reliable data basis is provided for calculating the gas evolution amount of calcium carbide, and the gas evolution amount of calcium carbide can be obtained more accurately and safely. The flame-retardant gas is introduced into the sealing cavity through the inflating part, so that air in the sealing cavity is replaced, acetylene is prevented from being mixed with the air, the explosion risk is reduced, and the operation safety is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of chemical engineering technology, and specifically relates to a calcium carbide gas generation measurement device and method. Background Art

[0002] Calcium carbide, commonly known as calcium carbide, has the molecular formula CaC2 and a relative molecular weight of 64.10. It is an important chemical raw material and the main raw material for producing acetylene in the chlor-alkali industry. The chemical reaction equation for the reaction of calcium carbide with water to produce acetylene is:

[0003] CaC2 + 2H2O → C2H2↑ + Ca(OH)2 + 127.2 kj / mol

[0004] The gas generation of calcium carbide refers to the volume of acetylene gas generated by the reaction of unit mass of calcium carbide with water, and the unit is L / kg.

[0005] Existing gas generation measurement devices usually include an acetylene generator and a measuring device. Among them, the acetylene generator is used to react calcium carbide with water to generate acetylene gas. The measuring device usually consists of a bell jar and a water tank with a sealing liquid to form a measuring chamber. The working pressure in the chamber is adjusted by a counterweight hammer, and a constant pressure is achieved through a curve wheel and a compensating hammer in a balance wheel. The sealing liquid usually uses a saturated NaCl solution.

[0006] During the detection process, it is necessary to manually zero the pressure of the bell jar float and manually read the displacement value of the bell jar float. Zeroing the pressure of the bell jar float is to manually observe the reading of the U-shaped tube manometer and manually adjust the position of the bell jar float to make the reading of the U-shaped tube manometer zero. The reading error of the U-shaped tube manometer and the error in manually adjusting the position of the bell jar float will both affect the test accuracy. At the same time, the ambient temperature affects the temperature of the saturated NaCl solution, resulting in a change in the solubility of acetylene in the saturated NaCl solution, which has a great impact on the test results and also affects the test accuracy. Summary of the Invention

[0007] Therefore, the technical problem to be solved by this application is to provide a calcium carbide gas generation measurement device and method that can improve the measurement accuracy of calcium carbide gas generation.

[0008] To solve the above problems, in the first aspect of this application, a calcium carbide gas generation measurement device is provided, including a gas generation tank, a feeding part, an inflation part, and a detection part. A sealing chamber is arranged in the gas generation tank. The feeding part, the inflation part, and the detection part are respectively connected to the gas generation tank. The feeding part is used to add reaction raw materials into the sealing chamber, the inflation part is used to introduce a flame retardant gas into the sealing chamber, and the detection part is used to obtain the environmental parameter information in the sealing chamber; the reaction raw materials include calcium carbide and a reaction liquid, and the environmental parameter information includes pressure information and temperature information.

[0009] Optionally, the detection part includes a temperature measuring component, which is arranged on the gas generating tank and extends into the sealed cavity to obtain the temperature information in the sealed cavity; the detection part includes a pressure measuring component and a pressure measuring pipeline, the pressure measuring component is arranged on the pressure measuring pipeline, and the pressure measuring pipeline is connected to the sealed cavity to obtain the pressure information in the sealed cavity through the pressure measuring component; a pressure measuring control valve is arranged on the pressure measuring pipeline.

[0010] Optionally, the calcium carbide gas generation amount measuring device includes a slag discharge pipe, which is arranged at the bottom of the gas generation tank and is connected to the sealed cavity, and a slag discharge valve is provided on the slag discharge pipe.

[0011] Optionally, the feeding part includes a first feeding unit, which includes a liquid pipeline, and the liquid pipeline is respectively connected to the sealed cavity and the reaction liquid source to inject the reaction liquid into the sealed cavity. The first feeding unit also includes a first control valve and a flow meter arranged on the liquid pipeline.

[0012] Optionally, the feeding part includes a second feeding unit arranged on the top of the gas generating tank, the second feeding unit includes a feeding pipe, a seal and a first driving unit, the feeding pipe includes a first end and a second end, the first end is connected to the external space of the gas generating tank, and the second end is connected to the sealing cavity, the seal is rotatably arranged in the feeding pipe and is located between the first end and the second end to separate the first end from the second end, the seal includes a placement position for placing calcium carbide, the rotation path of the seal includes a first position toward the first end and a second position toward the second end, and the first driving unit is connected to the seal to drive the seal to switch between the first position and the second position.

[0013] Optionally, the feeding part includes a conveying pipe, one end of which is connected to the feeding pipe, and the other end extends toward the middle of the sealing chamber in the horizontal direction. A screw is arranged in the conveying pipe, and the screw is coaxially arranged with the conveying pipe. The thread top of the screw abuts against the inner wall of the conveying pipe. The feeding part includes a second driving unit, and the second driving unit is connected to the screw to drive the screw to rotate in the conveying pipe.

[0014] Optionally, the inflation portion includes an air inlet pipe, which is respectively connected to the sealed cavity and the flame-retardant gas source, and a second control valve is provided on the air inlet pipe; the inflation portion includes an exhaust pipe, the calcium carbide gas generation measurement device includes a processing tank, the exhaust pipe is respectively connected to the sealed cavity and the processing tank, and a third control valve is provided on the exhaust pipe;

[0015] Optionally, the calcium carbide gas generation measuring device further includes a control unit, and the temperature measuring element, the pressure measuring element, the slag discharging valve, the first control valve, the flowmeter, the first driving unit, the second control valve and the third control valve are respectively connected to the control unit; the calcium carbide gas generation measuring device includes a cabinet body, and the gas generation tank, the feeding part, the gas filling part and the detection part are arranged in the cabinet body, and the control unit includes a display, and the display is arranged on the outer wall of the cabinet body.

[0016] In the second aspect of the present application, a method for measuring the gas generation amount of calcium carbide is provided, and the gas generation amount of calcium carbide is measured by the calcium carbide gas generation measuring device as described above;

[0017] The method includes:

[0018] Controlling the gas filling part to introduce a flame retardant gas into the sealed cavity of the gas generation tank;

[0019] Controlling the first feeding unit to inject a reaction liquid into the sealed cavity;

[0020] Controlling the second feeding unit to add calcium carbide into the sealed cavity;

[0021] Obtaining the environmental parameter information in the sealed cavity;

[0022] Obtaining the gas generation amount of calcium carbide based on the environmental parameter information;

[0023] Controlling the third control valve to open to discharge the gas in the sealed cavity;

[0024] Controlling the slag discharging valve to open to discharge the slag water in the sealed cavity.

[0025] Optionally, the obtaining the gas generation amount of calcium carbide based on the environmental parameter information includes:

[0026] When controlling the gas filling part to introduce a flame retardant gas into the sealed cavity of the gas generation tank, obtaining the volume of the introduced flame retardant gas;

[0027] When controlling the first feeding unit to inject a reaction liquid into the sealed cavity, obtaining the volume of the injected reaction liquid;

[0028] When controlling the second feeding unit to add calcium carbide into the sealed cavity, controlling the temperature measuring element to obtain the initial temperature information in the sealed cavity, and controlling the pressure measuring element to obtain the initial pressure information in the sealed cavity;

[0029] During the reaction of calcium carbide with the reaction liquid, controlling the temperature measuring element to obtain the highest temperature information in the sealed cavity, and controlling the pressure measuring element to obtain the highest pressure information in the sealed cavity;

[0030] The initial amount of flame-retardant gas is obtained based on the volume of the sealed chamber, the volume of the injected flame-retardant gas, the initial temperature information, and the initial pressure information;

[0031] The total amount of gas after the reaction is obtained based on the volume of the sealed chamber, the volume of the injected reaction liquid, the highest temperature information, and the highest pressure information;

[0032] The amount of acetylene is obtained based on the initial amount of flame-retardant gas and the total amount of gas;

[0033] The gas generation amount of calcium carbide is obtained based on the amount of acetylene;

[0034] Beneficial effects

[0035] In the embodiments of the present invention, a calcium carbide gas generation amount measuring device and method are provided. By setting a gas generation tank and arranging a sealed chamber in the gas generation tank, a closed space is provided for the chemical reaction between calcium carbide and the reaction liquid. By setting a feeding part, the reaction raw materials can be put into the sealed chamber. By setting a detection part, the environmental parameters in the sealed chamber can be obtained, providing a reliable data basis for calculating the gas generation amount of calcium carbide, and thus the gas generation amount of calcium carbide can be obtained more accurately. By setting an inflation part, a flame-retardant gas can be introduced into the sealed chamber, thereby displacing the air in the sealed chamber, avoiding the formation of an explosive mixture of acetylene and air, reducing the explosion risk during the operation of the calcium carbide gas generation amount measuring device, and ensuring the safety of the device operation. Description of the drawings

[0036] Figure 1 It is the working principle diagram of the calcium carbide gas generation amount measuring device according to the embodiment of the present application;

[0037] Figure 2 It is the structural schematic diagram of the calcium carbide gas generation amount measuring device according to the embodiment of the present application from the first perspective;

[0038] Figure 3 It is the structural schematic diagram of the calcium carbide gas generation amount measuring device according to the embodiment of the present application from the second perspective;

[0039] Figure 4 It is the structural schematic diagram of the gas generation tank and the feeding part according to the embodiment of the present application;

[0040] Figure 5 It is the cross-sectional view of the feeding part according to the embodiment of the present application;

[0041] Figure 6 It is the logic diagram of the calcium carbide gas generation amount measuring method according to the embodiment of the present application.

[0042] The reference numerals are shown as:

[0043] 1, cabinet body; 11, gas generation tank;

[0044] 21. Temperature measuring element; 22. Pressure measuring element; 23. Pressure measuring control valve;

[0045] 31. Slag discharge pipe; 32. Slag discharge valve;

[0046] 41. Liquid pipeline; 42. First control valve; 43. Flowmeter;

[0047] 51. Air inlet pipe; 52. Second control valve;

[0048] 61. Exhaust pipe; 62. Third control valve; 63. Processing tank;

[0049] 7. Control unit; 71. Electric control unit; 72. Pneumatic control unit; 73. Display;

[0050] 8. Air compressor pipe;

[0051] 91. Feeding pipe; 92. Sealing element; 93. First driving unit. Detailed implementation mode

[0052] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0054] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0056] Referring to Figures 1 to 5 As shown, according to the first aspect of the embodiments of the present application, a calcium carbide gas generation amount measuring device is provided, which includes a gas generation tank 11, a feeding part, an air filling part, and a detection part. A sealed cavity is provided inside the gas generation tank 11. The feeding part, the air filling part, and the detection part are respectively connected to the gas generation tank 11. The feeding part is used to add reaction raw materials into the sealed cavity, the air filling part is used to introduce a flame retardant gas into the sealed cavity, and the detection part is used to obtain the environmental parameter information inside the sealed cavity. The reaction raw materials include calcium carbide and a reaction liquid, and the environmental parameter information includes pressure information and temperature information.

[0057] By providing the gas generation tank 11 and arranging a sealed cavity inside the gas generation tank 11, a closed space is provided for the chemical reaction between calcium carbide and the reaction liquid. By providing the feeding part, the reaction raw materials can be put into the sealed cavity. By providing the detection part, the environmental parameters inside the sealed cavity can be obtained, providing a reliable data basis for calculating the gas generation amount of calcium carbide, and thus the gas generation amount of calcium carbide can be obtained more accurately. By providing the air filling part, a flame retardant gas can be introduced into the sealed cavity, thereby displacing the air inside the sealed cavity, avoiding the formation of an explosive mixture of acetylene and air, reducing the explosion risk during the operation of the calcium carbide gas generation amount measuring device, and ensuring the safety of the operation.

[0058] In the calcium carbide gas generation amount measuring device of this embodiment, by providing a feeding part, an air filling part, and a detection part on the gas generation tank 11, the measuring instrument in the calcium carbide gas generation amount measuring device is abandoned, reducing the manual operation steps, avoiding the human errors caused by manually adjusting the pressure of the bell jar float and observing the U-shaped pressure gauge and reading the displacement scale of the bell jar float, and also avoiding the errors caused by the change of the solubility of acetylene in saturated brine and the cumbersome calculation process brought by querying and deducting the saturated vapor pressure of saturated brine, increasing the measurement accuracy of the gas generation amount of calcium carbide.

[0059] Among them, the feeding part, the air filling part, and the detection part in the calcium carbide gas generation amount measuring device are all automated devices, which can work in coordination automatically to realize an automated measurement process. The steps of air filling, feeding, detection, and calculating the gas generation amount are all automatically controlled and do not require frequent manual intervention, greatly shortening the measurement time.

[0060] Specifically, the calcium carbide gas generation amount measuring device further includes a control part 7. The control part 7 is respectively connected to the feeding part, the air filling part, and the detection part, and then controls the actions of the feeding part, the air filling part, and the detection part, so as to achieve coordinated cooperation.

[0061] It is understandable that the feeding section, the gas charging section, and the detection section can also be independently controlled respectively, or can be operated manually. Whether the feeding section, the gas charging section, and the detection section in this embodiment are under automated collaborative control, independently controlled respectively, or operated manually, compared with the traditional calcium carbide gas generation measurement device, they can all reduce human error and increase the measurement accuracy of the calcium carbide gas generation.

[0062] Among them, the gas generation tank 11 can be generally a hollow cylindrical structure, and the sealed cavity is the hollow part.

[0063] Among them, the feeding section, the gas charging section, and the detection section are respectively fixedly connected to the gas generation tank 11.

[0064] Among them, the reaction liquid can be water.

[0065] The detection section includes a temperature measuring element 21. The temperature measuring element 21 is arranged on the gas generation tank 11 and extends into the sealed cavity to obtain the temperature information in the sealed cavity.

[0066] The reaction between calcium carbide and water is an exothermic reaction, and the temperature in the sealed cavity will change as the reaction proceeds. By setting a thermometer and making the temperature measuring element 21 extend into the sealed cavity to obtain the temperature information, the temperature information in the sealed cavity can be obtained in real time and accurately. By obtaining the accurate temperature information in the sealed cavity and combining other data such as pressure information, the amount of substance of acetylene gas generated by the reaction can be calculated more precisely, and then a more accurate calcium carbide gas generation can be obtained, improving the measurement accuracy.

[0067] Among them, the temperature measuring element 21 is a temperature sensor.

[0068] Specifically, the detection end of the temperature sensor penetrates through the wall of the gas generation tank 11 and extends into the sealed cavity.

[0069] There are multiple temperature measuring elements 21, and the multiple temperature measuring elements 21 are evenly arranged along the circumferential direction of the gas generation tank 11.

[0070] By setting multiple temperature measuring elements 21 and making the multiple temperature measuring elements 21 evenly arranged along the circumferential direction of the gas generation tank 11, the temperature information at different positions in the sealed cavity can be obtained, avoiding measurement errors caused by local temperature differences. The temperature information in the sealed cavity can be obtained more comprehensively and accurately, so as to obtain the calcium carbide gas generation more accurately.

[0071] Among them, the vertical positions of the multiple temperature measuring elements 21 are the same, that is, the multiple temperature measuring elements 21 are evenly arranged along the horizontal circumferential direction of the gas generation tank 11.

[0072] Among them, the temperature information is the average value of the temperatures measured by each temperature measuring element 21.

[0073] The detection unit includes a pressure measuring member 22 and a pressure measuring pipeline. The pressure measuring member 22 is arranged on the pressure measuring pipeline, and the pressure measuring pipeline is connected to the sealing cavity to obtain the pressure information in the sealing cavity through the pressure measuring member 22.

[0074] By providing the pressure measuring pipeline and the pressure measuring member 22, the pressure information in the sealing cavity can be accurately obtained. Combining with other data such as temperature information, the amount of substance of the acetylene gas generated by the reaction can be calculated more precisely, and then a more accurate carbide gas generation can be obtained, improving the measurement accuracy.

[0075] Among them, the pressure measuring member 22 is a pressure sensor.

[0076] Among them, the pressure measuring member 22 is arranged at one end of the pressure measuring pipeline. The other end of the pressure measuring pipeline is connected to the gas generating tank 11 and is connected to the sealing cavity. The gas in the sealing cavity can reach the pressure measuring member 22 through the pressure measuring pipeline, so that the pressure measuring member 22 can obtain the pressure information in the sealing cavity.

[0077] A pressure measuring control valve 23 is arranged on the pressure measuring pipeline, so as to control the on-off of the pressure measuring pipeline.

[0078] The diameter and length of the pressure measuring pipeline are minimized as much as possible to reduce the volume of the pressure measuring pipeline, and then reduce the error of the volume data when calculating the carbide gas generation. The volume of the pressure measuring pipeline can also be included in the volume of the gas generating tank 11, so as to avoid the error of the volume data when calculating the carbide gas generation.

[0079] The carbide gas generation measuring device includes a slag discharge pipe 31. The slag discharge pipe 31 is arranged at the bottom of the gas generating tank 11 and is connected to the sealing cavity. A slag discharge valve 32 is arranged on the slag discharge pipe 31.

[0080] By providing the slag discharge pipe 31 and the slag discharge valve 32, the slag water can be discharged conveniently and quickly, keeping the inside of the gas generating tank 11 clean, ensuring the consistency of the reaction environment during each measurement, and avoiding measurement errors caused by the residual slag water.

[0081] Among them, the slag discharge pipe 31 is a straight pipe and is arranged vertically. The top end of the slag discharge pipe 31 is connected to the center position at the bottom of the gas generating tank 11 and is connected to the sealing cavity. A container can be arranged below the bottom end of the slag discharge pipe 31 to receive the discharged slag water.

[0082] Among them, the slag discharge valve 32 is arranged in the middle of the slag discharge pipe 31.

[0083] Among them, the volume of the part of the slag discharge pipe 31 above the slag discharge valve 32 is included in the volume of the gas generating tank 11, so as to avoid the error of the volume data when calculating the carbide gas generation.

[0084] The feeding part includes a first feeding unit, which includes a liquid pipeline 41. The liquid pipeline 41 is respectively connected to the sealed cavity and the reaction liquid source to inject the reaction liquid into the sealed cavity. The first feeding unit also includes a first control valve 42 and a flow meter 43 arranged on the liquid pipeline 41.

[0085] By setting the first feeding unit, the reaction liquid can be accurately injected into the sealed cavity. The liquid pipeline 41 is provided with a conveying channel for the reaction liquid, and the first control valve 42 is provided to control the on-off of the liquid pipeline 41. By setting the flow meter 43, the volume of the reaction liquid injected into the sealed cavity can be accurately obtained, which provides a reliable data basis for calculating the gas generation amount of calcium carbide.

[0086] The reaction liquid source may be a device for storing the reaction liquid inside the calcium carbide gas generation measuring device, or may be a device outside the calcium carbide gas generation measuring device.

[0087] In this embodiment, the reaction liquid source is a container for storing the reaction liquid and a water pump for pumping the reaction liquid inside the calcium carbide gas generation measurement device.

[0088] Specifically, the reaction liquid is water, and the calcium carbide gas generation measurement device includes a water storage tank, a water pump is provided on the water storage tank, and a water pump is provided on the water pump. The water pump is connected to the liquid pipeline 41, and then the water in the water storage tank is pumped into the liquid pipeline 41, and then enters the sealed cavity through the liquid pipeline 41, so that the water can react with the calcium carbide. That is, the water storage tank, the water in the water storage tank, the water pump and the water pump together form a reaction liquid source.

[0089] The volume of the portion between the outlet of the liquid pipeline 41 and the first control valve 42 is calculated into the volume of the gas generating tank 11, thereby avoiding errors in volume data when calculating the gas generation amount of calcium carbide.

[0090] The feeding part includes a second feeding unit arranged on the top of the gas generating tank 11, the second feeding unit includes a feeding pipe 91, a sealing member 92 and a first driving unit 93, the feeding pipe 91 includes a first end and a second end, the first end is connected to the external space of the gas generating tank 11, and the second end is connected to the sealing cavity, the sealing member 92 is rotatably arranged in the feeding pipe 91, and is located between the first end and the second end to separate the first end from the second end, the sealing member 92 includes a placement position for placing calcium carbide, and the rotation path of the sealing member 92 includes a first position toward the first end and a second position toward the second end, and the first driving unit 93 is connected to the sealing member 92 to drive the sealing member 92 to switch between the first position and the second position.

[0091] By providing the feeding pipe 91, a passage for calcium carbide to enter the sealed chamber is provided. By arranging a seal 92 inside the feeding pipe 91, the first end and the second end of the feeding pipe 91 can be partitioned, and the sealed chamber of the carbide generator 11 is isolated from the outside world, effectively preventing flammable and explosive gases such as acetylene from escaping from the carbide generator 11. By arranging the first driving unit 93 to drive the seal 92 to switch between the first position and the second position, it is possible to drive the calcium carbide in the placement position to move from the first position to the second position, and then enter the sealed chamber to achieve feeding.

[0092] Among them, the feeding pipe 91 includes a receiving section located in the middle of the feeding pipe 91. Along both sides of the feeding pipe 91, the receiving section is respectively an inlet section and an outlet section. The inlet section is located on the side of the receiving section away from the sealed chamber, and the outlet section is located on the side of the receiving section close to the sealed chamber. The first end is the end of the inlet section away from the receiving section, and the second end is the end of the outlet section away from the receiving section. The seal 92 is arranged in the receiving section. The diameter of the receiving section is larger than the diameters of the inlet section and the outlet section, so that the seal 92 can isolate the inlet section from the outlet section. The diameter of the seal 92 is adapted to the diameter of the receiving section, that is, the diameter of the seal 92 is larger than the diameters of the inlet section and the outlet section, so that during the rotation of the seal 92, the internal space of the feeding pipe 91 can always be closed, the inlet section and the outlet section can always be isolated, that is, the connection between the inlet section and the outlet section is blocked, and nitrogen leakage is avoided.

[0093] Among them, the inner wall of the receiving section is an arc surface, and the seal 92 is generally spherical. The shape and size of the receiving section are adapted to the shape and size of the seal 92.

[0094] Among them, a groove is arranged at the placement position, and the calcium carbide is placed in the groove, so that the calcium carbide can be driven to move better. The size of the groove is designed according to actual needs to avoid the connection between the first end and the second end due to the existence of the groove during the rotation of the seal 92.

[0095] The feeding part includes a conveying pipe. One end of the conveying pipe is connected to the feeding pipe 91, and the other end extends towards the middle in the horizontal direction of the sealed chamber. A screw is arranged inside the conveying pipe. The screw is coaxially arranged with the conveying pipe, and the top of the screw thread abuts against the inner wall of the conveying pipe. The feeding part includes a second driving unit, and the second driving unit is connected to the screw to drive the screw to rotate inside the conveying pipe.

[0096] By setting up a delivery pipe and installing a screw inside the delivery pipe, and driving the screw to rotate inside the delivery pipe by a second driving unit, the calcium carbide entering the delivery pipe can be pushed forward, and then discharged towards the middle of the horizontal direction of the sealing cavity, so that the calcium carbide falls into the middle position of the sealing cavity, making the reaction occur in the middle. Thus, the temperatures and pressures obtained by each temperature measuring element 21 and pressure measuring element 22 are closer, reducing errors. By making the top of the screw thread abut against the inner wall of the delivery pipe, during rotation, the thread continuously stirs and pushes the material, enabling the material to move smoothly inside the delivery pipe and reducing the possibility of material accumulation and blockage inside the delivery pipe. This ensures the continuity and stability of the feeding process and avoids affecting the measurement progress and results due to material blockage.

[0097] Among them, the delivery pipe is a straight pipe. One end of the delivery pipe is connected to the feeding pipe 91, which is the inlet for calcium carbide to enter the delivery pipe. The other end of the delivery pipe extends towards the middle of the horizontal direction of the sealing cavity, enabling the calcium carbide to be accurately delivered to the middle position of the sealing cavity. The screw is arranged inside the hollow part of the delivery pipe. The delivery pipe provides a space for the installation and rotation of the screw, and at the same time plays a role in guiding and restricting the material, ensuring that the material does not scatter during the delivery process.

[0098] Among them, the screw is located inside the delivery pipe and is coaxially arranged with the delivery pipe. The top of the screw thread abuts against the inner wall of the delivery pipe, so that when the screw rotates, it can axially transport the material along the delivery pipe through the pushing action of the thread.

[0099] Among them, the second driving unit is the power source of the spiral feeder. The second driving unit is connected to the screw and can provide rotational power for the screw to rotate stably inside the delivery pipe.

[0100] Specifically, the second driving unit is a motor. The second driving unit can be arranged outside the gas generating tank 11. The second driving unit is connected to the screw through a transmission mechanism. Specifically, for example, the screw is driven to rotate through a transmission mechanism such as a belt. Specifically, the second driving unit is arranged on the outer wall of the gas generating tank 11.

[0101] More specifically, belt pulleys are respectively installed on the output shaft of the second driving unit and one end of the screw, and the two belt pulleys are connected by a belt. When the second driving unit operates, it drives the driving belt pulley to rotate. The driving belt pulley drives the driven belt pulley to rotate through the friction of the belt, thereby realizing the driving of the screw.

[0102] The gas filling part includes an inlet pipe 51. The inlet pipe 51 is respectively connected to the sealing cavity and a nitrogen gas source, and a second control valve 52 is arranged on the inlet pipe 51.

[0103] By providing the air inlet pipe 51, a flow channel for nitrogen is provided. By providing the second control valve 52 on the air inlet pipe 51, the on-off of the nitrogen gas flow path can be controlled. By introducing nitrogen gas into the sealed cavity through the air inlet pipe 51, the air therein can be effectively displaced before measurement, creating an oxygen-free environment in the sealed cavity, avoiding the formation of explosive gases by mixing acetylene generated from the reaction of calcium carbide and water with air subsequently, reducing the explosion risk, and ensuring the safety of operators and equipment. Nitrogen is stable in nature and is not prone to chemical reactions with calcium carbide, water, and reaction products. After the sealed cavity is filled with nitrogen, other gas components in the air can be excluded from interfering with the measurement process. By providing the second control valve 52, it is convenient to accurately control the amount and time of nitrogen introduction. Before measurement, according to the volume of the sealed cavity and actual requirements, the amount of nitrogen introduced can be accurately controlled to ensure that the air is fully displaced.

[0104] Among them, the volume of the part between the outlet of the air inlet pipe 51 and the second control valve 52 is included in the volume of the gas generation tank 11, thereby avoiding errors in the volume data when calculating the gas generation amount of calcium carbide.

[0105] The gas charging part includes an exhaust pipe 61. The calcium carbide gas generation amount measuring device includes a treatment tank 63. The exhaust pipe 61 is respectively connected to the sealed cavity and the treatment tank 63, and a third control valve 62 is provided on the exhaust pipe 61.

[0106] By providing the exhaust pipe 61, the acetylene gas in the sealed cavity can be discharged to the treatment tank 63, avoiding the accumulation of acetylene gas in the device, reducing the explosion risk, and ensuring the safety of operators and equipment. The treatment tank 63 dilutes and flame-retards the acetylene gas and then discharges it.

[0107] The calcium carbide gas generation amount measuring device further includes a control unit 7. The temperature measuring element 21, the pressure measuring element 22, the slag discharge valve 32, the first control valve 42, the flow meter 43, the first driving unit 93, the second control valve 52, and the third control valve 62 are respectively connected to the control unit 7.

[0108] By setting up the control unit 7, the automatic operation of the calcium carbide gas generation measuring device is realized, and automatic measurement is achieved. The control unit 7 can uniformly coordinate the operation of each component. When starting the measurement, the control unit 7 can control the second control valve 52 to open in sequence according to the preset program, and introduce nitrogen into the sealed cavity. Subsequently, the first control valve 42 is controlled to open, so that the reaction liquid is injected according to the set amount; then the first driving unit 93 is controlled to drive the sealing member 92 to rotate, and calcium carbide is added. During the reaction process, the data of the temperature measuring element 21 and the pressure measuring element 22 are collected in real time. After the reaction is completed, the third control valve 62 is controlled to open for exhaust, and the slag discharge valve 32 is used for slag discharge. The entire process does not require frequent manual intervention, improving the measurement efficiency. When using the traditional calcium carbide gas generation measuring device for measurement, the same sample needs to be continuously operated three times. The result of the first time is not counted, and the gas generation amounts of the second and third times are calculated respectively, namely the "one blank and two parallel" test. The time usually used is 35-45 minutes, which is long and inefficient. The calcium carbide gas generation measuring device in this embodiment reduces manual participation through automatic control. Compared with the traditional calcium carbide gas generation measuring device, it avoids the cumbersome operation of manual calculation of gas generation amount. The data of the single test sample is accurate, improving the test efficiency. The test time is shortened to 10-14 minutes, greatly improving the measurement efficiency.

[0109] For the traditional calcium carbide gas generation measuring device, manual participation is required in the links of manual feeding, testing, reading, etc. And the test environment contains flammable, explosive, toxic and harmful gases such as acetylene, hydrogen sulfide, and phosphine, there is an explosion risk, the personal safety of the operator cannot be guaranteed, and it causes damage to the physical and mental health of the operator. The calcium carbide gas generation measuring device in this embodiment reduces manual participation through automatic control, avoiding the operator from inhaling toxic and harmful gases, and ensuring the safety and health of the operator.

[0110] Through the precise regulation of each component by the control unit 7, the stability and consistency of the measurement process can be ensured. The control unit 7 accurately controls the injection amount of the reaction liquid according to the data of the flowmeter 43, ensuring that the reaction conditions are the same for each measurement. Based on the data of the temperature measuring element 21 and the pressure measuring element 22, combined with the algorithm, the gas generation amount is accurately calculated, avoiding manual calculation errors and effectively improving the measurement accuracy.

[0111] When the detection unit detects abnormal conditions such as overheating and overpressure, the control unit 7 controls the third control valve 62 and the slag discharge valve 32 to open, automatically empty and discharge the slag, and enter the safety mode. When there are abnormalities in the system power supply and compressed air, the system automatically enters the safety mode for the calcium carbide gas generation measuring device, the third control valve 62 and the slag discharge valve 32 automatically open, and automatically empty and discharge the slag, ensuring the safety of the system.

[0112] Among them, the slag discharge valve 32 can be a spring type safety valve, which automatically opens by the elastic force of the spring when overpressure occurs.

[0113] Among them, the control unit 7 includes an electric control unit 71, and the electric control unit 71 can be a PLC controller. The slag discharge valve 32, the first control valve 42, the second control valve 52 and the third control valve 62 can be electric control valves. The slag discharge valve 32, the first control valve 42, the second control valve 52 and the third control valve 62 are respectively connected to the control unit 7 by cables or wirelessly.

[0114] Among them, the control unit 7 can include a pneumatic control unit 72, and the slag discharge valve 32, the first control valve 42, the second control valve 52 and the third control valve 62 can be pneumatic valves. The slag discharge valve 32, the first control valve 42, the second control valve 52 and the third control valve 62 are respectively connected to the pneumatic control unit 72 through air pipes. The pneumatic control unit 72 is connected to the electric control unit 71, and the electric control unit 71 controls the operation of the pneumatic control unit 72, thereby controlling the opening and closing of each pneumatic valve. The pneumatic control unit 72 can be connected to an external air source through an air pressure pipe 8. The calcium carbide gas generation measuring device can also include an air compressor, and the pneumatic control unit 72 can be connected to the air compressor in the calcium carbide gas generation measuring device through the air pressure pipe 8.

[0115] Among them, the electric control unit 71 can be respectively connected to the temperature measuring element 21, the pressure measuring element 22, the flowmeter 43 and the first driving unit 93 through cables, or can be communicatively connected to the temperature measuring element 21, the pressure measuring element 22, the flowmeter 43 and the first driving unit 93 in a wireless connection manner.

[0116] It should be noted that controlling the opening and closing of the electric control valves through the electric control unit 71, and controlling the temperature measuring element 21, the pressure measuring element 22, and the flowmeter 43 to obtain the corresponding parameter information are all conventional means in the art. Controlling the operation of the first driving unit 93 through the electric control unit 71, that is, controlling the operation of the motor, is also a conventional means in the art. The specific model and composition structure of the PLC controller are all conventional technical solutions in the art and can be selected and designed according to actual needs. The connection method, circuit structure, signal transmission path and specific working principle between the PLC controller and each electric valve are also conventional means in the art and will not be elaborated here. Controlling the operation of the pneumatic control unit 72 through the electric control unit 71, thereby controlling the opening and closing of each pneumatic valve, is also a conventional means in the art and will not be elaborated here.

[0117] The calcium carbide gas generation measuring device includes a cabinet 1, and a gas generation tank 11, a feeding part, an air filling part and a detection part are arranged in the cabinet 1. The control unit 7 includes a display 73, and the display 73 is arranged on the outer wall of the cabinet 1.

[0118] By integrating the gas generating tank 11, the feeding part, the gas filling part and the detection part in the cabinet body 1, the structure of the whole measuring device is made compact. When the operator performs the measuring operation, there is no need to walk back and forth between multiple scattered components, which facilitates centralized operation and management. The display 73 is arranged on the outer wall of the cabinet body 1, with a prominent position, which is convenient for the operator to view the parameters during the measuring process in real time, such as temperature, pressure, reaction liquid flow rate, etc., to timely understand the operation status of the device and improve the operation efficiency.

[0119] Among them, the cabinet body 1 plays a protective role for the internal gas generating tank 11, the feeding part, the gas filling part and the detection part, reducing the influence of external factors on the equipment. The cabinet body 1 can block impurities such as dust and moisture from entering the device, extending the service life of the equipment. By setting the cabinet body 1, the overall measuring device can also be made more regular, occupying relatively less space, which is beneficial to the space planning and tidiness of the laboratory or work site.

[0120] Among them, the display 73 is embedded in the top outer wall of the cabinet body 1.

[0121] Such as Figure 6 As shown, in the second aspect of this embodiment, a method for measuring the gas generation amount of calcium carbide is provided, and the gas generation amount of calcium carbide is measured by the above-mentioned calcium carbide gas generation amount measuring device.

[0122] The method includes:

[0123] Step 101: Control the gas filling part to introduce a flame retardant gas into the sealed cavity of the gas generating tank 11.

[0124] By introducing a flame retardant gas into the sealed cavity of the gas generating tank 11, the air in the sealed cavity can be replaced, avoiding the formation of an explosive risk mixture of acetylene and air generated subsequently, greatly reducing the possibility of explosion, and protecting the safety of the operator and the equipment. Moreover, it can also create an oxygen-free and stable environment for the subsequent reaction, reducing the interference of impurities such as oxygen on the reaction process of calcium carbide and water, ensuring that the reaction proceeds under a purer condition, and helping to improve the measurement accuracy.

[0125] In this step, control the second control valve 52 on the intake pipe 51 connected to the nitrogen gas source to open, so that nitrogen continuously flows into the sealed cavity of the gas generating tank 11. Utilize the characteristics of nitrogen with stable chemical properties, non-flammable and non-supporting combustion to displace the air in the sealed cavity.

[0126] Step 102: Control the first feeding unit to inject the reaction liquid into the sealed cavity.

[0127] It can realize automatic injection of the reaction liquid and accurately control the injection amount of the reaction liquid, providing stable initial conditions for the reaction of calcium carbide and water.

[0128] In this step, the first control valve 42 on the liquid pipeline 41 is controlled to open, so that the reaction liquid is injected into the sealed cavity from the reaction liquid source via the liquid pipeline 41. When the reaction liquid source is a component inside the calcium carbide gas generation measuring device, the water pump on the reaction liquid source is controlled to operate, and then the reaction liquid is pumped into the liquid pipeline 41. When the reaction liquid source is a component outside the calcium carbide gas generation measuring device, the first control valve 42 is controlled to open, so that the reaction liquid is injected into the sealed cavity from the reaction liquid source via the liquid pipeline 41.

[0129] In this step, the control unit 7 receives the flow information monitored by the flowmeter 43, and then controls the opening and closing of the first control valve 42 based on the flow information, so that the reaction liquid is injected into the sealed cavity according to the set volume.

[0130] Step 103: Control the second feeding unit to add calcium carbide into the sealed cavity.

[0131] It can realize the automatic addition of calcium carbide and accurately control the quality of the added calcium carbide, avoid affecting the gas generation measurement result due to inaccurate feeding amount, and improve the reliability of the measurement data.

[0132] In this step, first place the calcium carbide sample on the placement position of the seal 92 of the second feeding unit, and drive the seal 92 to rotate through the first driving unit 93, so that it rotates from the first position facing the external space of the gas generation tank 11 to the second position facing the sealed cavity, so that the calcium carbide falls into the sealed cavity, so that the calcium carbide is in a relatively sealed environment during the addition process, eliminating the risk of gas leakage in the sealed cavity, and at the same time avoiding external impurities from mixing into the gas generation tank 11 and affecting the measurement.

[0133] Specifically, in this embodiment, a calcium carbide sample of 50 g ± 0.1 g can be added.

[0134] Step 104: Obtain the environmental parameter information in the sealed cavity.

[0135] By obtaining the environmental parameter information, it lays a foundation for accurately calculating the gas generation amount later. By real-time monitoring of the environmental parameters, the progress of the reaction can also be understood, which helps to grasp the whole measurement process.

[0136] In this step, the temperature measuring element 21 is controlled to accurately obtain the temperature information in the sealed cavity, and the pressure measuring element 22 is controlled to accurately obtain the pressure information in the sealed cavity.

[0137] Step 105: Obtain the calcium carbide gas generation amount based on the environmental parameter information.

[0138] By obtaining the temperature information and pressure information, and combining with information such as the volume of the sealed cavity, the volume of the injected flame retardant gas, and the volume of the injected reaction liquid, the calcium carbide gas generation amount can be calculated.

[0139] In this step, first calculate the initial nitrogen amount based on the initial temperature, initial pressure, and the volume of nitrogen introduced. Then, calculate the total amount of gas after the reaction according to the highest temperature, highest pressure, the volume of the sealed cavity, and the volume of the injected reaction liquid after the reaction. Subtract the initial nitrogen amount from the total amount of gas after the reaction to obtain the acetylene amount; finally, calculate the gas generation amount per unit mass of calcium carbide based on the mass of calcium carbide added.

[0140] Step 106: Control the third control valve 62 to open to discharge the gas in the sealed cavity.

[0141] Acetylene is a flammable and explosive gas. After the measurement is completed, discharging it in time can prevent it from accumulating in the sealed cavity and reduce the explosion risk. At the same time, discharging the gas can restore the pressure in the sealed cavity to normal, facilitating subsequent slag discharge and reuse of the device.

[0142] In this step, control the third control valve 62 on the exhaust pipe 61 connected to the sealed cavity and the treatment tank 63 to open, so that the gas in the sealed cavity is discharged into the treatment tank 63 for treatment.

[0143] Step 107: Control the slag discharge valve 32 to open to discharge the slag water in the sealed cavity.

[0144] Calcium hydroxide formed by the reaction of calcium carbide with water will form slag water. If it is not discharged in time, it will affect the progress of the reaction during subsequent measurement, such as blocking the pipeline, affecting the accuracy of temperature and pressure measurement, etc. At the same time, the slag water may corrode the internal components of the device and shorten the service life of the device.

[0145] In this step, control the slag discharge valve 32 to open, so that the slag water is discharged through the slag discharge pipe 31.

[0146] The above step 105 includes:

[0147] Step 1051: When controlling the gas charging part to introduce a flame retardant gas into the sealed cavity of the gas generation tank 11, obtain the volume of the introduced flame retardant gas.

[0148] In this step, record the volume of the introduced nitrogen, which provides a data basis for subsequent calculation of the initial nitrogen amount in the sealed cavity according to the ideal gas state equation. The initial nitrogen amount can also be understood as the amount of substance of nitrogen in the initial state.

[0149] Step 1052: When controlling the first feeding unit to inject a reaction liquid into the sealed cavity, obtain the volume of the injected reaction liquid.

[0150] In this step, by accurately obtaining the volume of the injected water, it can provide data support for subsequent calculation of the total amount of gas, which helps to accurately measure the gas generation amount of calcium carbide.

[0151] Step 1053: When controlling the second feeding unit to add calcium carbide into the sealed cavity, control the temperature measuring element 21 to obtain the initial temperature information in the sealed cavity, and control the pressure measuring element 22 to obtain the initial pressure information in the sealed cavity.

[0152] In this step, by obtaining the initial temperature and initial pressure information, combining the volume of the sealed cavity and the volume of the injected flame retardant gas, and based on the ideal gas state equation, the initial nitrogen amount in the sealed cavity can be calculated, providing a basis for subsequent calculations.

[0153] Step 1054: During the reaction of calcium carbide with the reaction liquid, control the temperature measuring element 21 to obtain the highest temperature information in the sealed cavity, and control the pressure measuring element 22 to obtain the highest pressure information in the sealed cavity.

[0154] In this step, the reaction of calcium carbide with water releases heat, increasing the temperature and pressure in the sealed cavity. By obtaining the highest temperature information and the highest pressure information, and also based on the ideal gas state equation, combining the volume of the sealed cavity and the remaining space volume after injecting water, the total amount of gas after the reaction can be calculated, thus providing key data for calculating the amount of substance of acetylene generated by the reaction. The total amount of gas after the reaction can also be understood as the total amount of substance of the gas in the sealed cavity after the reaction.

[0155] Step 1055: Obtain the initial nitrogen amount based on the volume of the sealed cavity, the volume of the injected flame retardant gas, the initial temperature information, and the initial pressure information.

[0156] In this step, using the ideal gas state equation, with the known volume of the sealed cavity, the volume of the injected nitrogen, the initial temperature information, and the initial pressure information, the amount of substance of nitrogen in the initial state in the sealed cavity, that is, the initial nitrogen amount, can be calculated. Furthermore, the reference amount of the gas in the sealed cavity before the reaction is determined.

[0157] Step 1056: Obtain the total amount of gas after the reaction based on the volume of the sealed cavity, the volume of the injected reaction liquid, the highest temperature information, and the highest pressure information.

[0158] In this step, since the gas in the sealed cavity after the reaction consists of the initial nitrogen and the acetylene generated by the reaction of calcium carbide with water, according to the ideal gas state equation, substituting data such as the volume of the sealed cavity, the remaining space volume after injecting water, the highest temperature, and the highest pressure into the formula, the total amount of substance of the gas in the sealed cavity after the reaction, that is, the total amount of gas after the reaction, can be calculated.

[0159] Step 1057: Obtain the amount of acetylene based on the initial nitrogen amount and the total amount of gas.

[0160] The total amount of gas after the reaction includes the initial nitrogen amount and the amount of substance of acetylene generated by the reaction. By subtracting the initial nitrogen amount from the total amount of gas after the reaction, the amount of substance of acetylene generated by the reaction of calcium carbide with water can be obtained.

[0161] Step 1058: Obtain the gas generation amount of calcium carbide based on the amount of acetylene.

[0162] According to the chemical equation of the reaction between calcium carbide and water to generate acetylene, the molar ratio between calcium carbide and the generated acetylene is 1:1. By using the calculated amount of substance of acetylene, the amount of substance of calcium carbide participating in the reaction can be calculated using the stoichiometric ratio. Given the mass of calcium carbide added, the gas generation amount of calcium carbide can be obtained, that is, the volume of acetylene gas generated by unit mass of calcium carbide under standard conditions.

[0163] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above advantageous ways can be freely combined and superimposed.

[0164] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and variations can be made without departing from the technical principle of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A calcium carbide gas generation measuring device, characterized in that: The invention comprises a gas generating tank (11), a feeding part, an air-charging part and a detecting part, wherein a sealed cavity is arranged in the gas generating tank (11), the feeding part, the air-charging part and the detecting part are respectively connected to the gas generating tank (11), the feeding part is used to add reaction raw materials into the sealed cavity, the air-charging part is used to introduce flame-retardant gas into the sealed cavity, and the detecting part is used to obtain environmental parameter information in the sealed cavity; The reaction raw materials include calcium carbide and reaction liquid, and the environmental parameter information includes pressure information and temperature information.

2. The calcium carbide gas generation measuring device according to claim 1, characterized in that: The detection unit comprises a temperature measuring element (21), wherein the temperature measuring element (21) is arranged on the gas generating tank (11) and extends into the sealed cavity to obtain the temperature information in the sealed cavity; The detection unit comprises a pressure measuring piece (22) and a pressure measuring pipeline, wherein the pressure measuring piece (22) is arranged on the pressure measuring pipeline, and the pressure measuring pipeline is connected to the sealed cavity, so as to obtain the pressure information in the sealed cavity through the pressure measuring piece (22); The pressure measuring pipeline is provided with a pressure measuring control valve (23).

3. The calcium carbide gas generation measuring device according to claim 2, characterized in that: The calcium carbide gas generation measuring device comprises a slag discharge pipe (31), the slag discharge pipe (31) is arranged at the bottom of the gas generation tank (11) and is connected to the sealed cavity, and a slag discharge valve (32) is arranged on the slag discharge pipe (31).

4. The calcium carbide gas generation measuring device according to claim 3, characterized in that: The feeding part comprises a first feeding unit, the first feeding unit comprises a liquid pipeline (41), the liquid pipeline (41) is respectively connected to the sealed cavity and the reaction liquid source, so as to inject the reaction liquid into the sealed cavity, and the first feeding unit also comprises a first control valve (42) and a flow meter (43) arranged on the liquid pipeline (41).

5. The calcium carbide gas generation measuring device according to claim 4, characterized in that: The feeding part includes a second feeding unit arranged on the top of the gas generating tank (11), the second feeding unit includes a feeding pipe (91), a sealing member (92) and a first driving unit (93), the feeding pipe (91) includes a first end and a second end, the first end is connected to the external space of the gas generating tank (11), and the second end is connected to the sealing cavity, the sealing member (92) is rotatably arranged in the feeding pipe (91) and is located between the first end and the second end to separate the first end from the second end, the sealing member (92) includes a placement position for placing calcium carbide, the rotation path of the sealing member (92) includes a first position toward the first end and a second position toward the second end, and the first driving unit (93) is connected to the sealing member (92) to drive the sealing member (92) to switch between the first position and the second position.

6. The calcium carbide gas generation measuring device according to claim 5, characterized in that: The feeding part comprises a conveying pipe, one end of which is connected to the feeding pipe (91), and the other end of which extends toward the middle of the sealing chamber in the horizontal direction. A screw is arranged in the conveying pipe, and the screw is coaxially arranged with the conveying pipe. The thread top of the screw abuts against the inner wall of the conveying pipe. The feeding part comprises a second driving unit, and the second driving unit is connected to the screw to drive the screw to rotate in the conveying pipe.

7. The calcium carbide gas generation measuring device according to claim 5, characterized in that: The inflation portion comprises an air inlet pipe (51), the air inlet pipe (51) is respectively connected to the sealed cavity and a flame-retardant gas source, and a second control valve (52) is provided on the air inlet pipe (51); The gas-charging portion comprises an exhaust pipe (61), the calcium carbide gas generation measuring device comprises a processing tank (63), the exhaust pipe (61) is respectively connected to the sealed cavity and the processing tank (63), and a third control valve (62) is provided on the exhaust pipe (61).

8. The calcium carbide gas generation measuring device according to claim 7, characterized in that: The calcium carbide gas generation measurement device further comprises a control unit (7), and the temperature measuring component (21), the pressure measuring component (22), the slag discharge valve (32), the first control valve (42), the flow meter (43), the first drive unit (93), the second control valve (52) and the third control valve (62) are respectively connected to the control unit (7); The calcium carbide gas generation measuring device comprises a cabinet (1), the gas generation tank (11), the feeding part, the gas charging part and the detection part are arranged in the cabinet (1), and the control part (7) comprises a display (73), and the display (73) is arranged on the outer wall of the cabinet (1).

9. A method for measuring gas generation of calcium carbide, characterized in that: Measuring the gas generation of calcium carbide by the calcium carbide gas generation measuring device as described in any one of claims 1 to 8; The method comprises: Controlling the inflation part to introduce flame-retardant gas into the sealed cavity of the gas generating tank (11); Controlling the first feeding unit to inject the reaction liquid into the sealed cavity; Controlling the second feeding unit to add calcium carbide into the sealed cavity; Obtain environmental parameter information in the sealed chamber; The gas generation amount of calcium carbide is obtained based on the environmental parameter information; Controlling the third control valve (62) to open and discharge the gas in the sealed chamber; The slag discharge valve (32) is controlled to open to discharge the slag water in the sealed cavity.

10. The method for measuring gas generation of calcium carbide according to claim 9, characterized in that: The method of obtaining the gas generation amount of calcium carbide based on the environmental parameter information includes: When the control inflation portion introduces flame retardant gas into the sealed cavity of the gas generating tank (11), the volume of the introduced flame retardant gas is obtained; When controlling the first feeding unit to inject the reaction liquid into the sealed cavity, obtaining the volume of the injected reaction liquid; When controlling the second feeding unit to add calcium carbide into the sealed cavity, controlling the temperature measuring component (21) to obtain initial temperature information in the sealed cavity, and controlling the pressure measuring component (22) to obtain initial pressure information in the sealed cavity; During the reaction between calcium carbide and the reaction liquid, the temperature measuring component (21) is controlled to obtain the maximum temperature information in the sealed cavity, and the pressure measuring component (22) is controlled to obtain the maximum pressure information in the sealed cavity; The initial flame retardant gas volume is obtained based on the volume of the sealed cavity, the volume of the flame retardant gas introduced, the initial temperature information and the initial pressure information; The total amount of gas after the reaction is obtained based on the volume of the sealed cavity, the volume of the injected reaction liquid, the maximum temperature information and the maximum pressure information; The amount of acetylene is obtained based on the initial amount of flame-retardant gas and the total amount of gas; The gas generation amount of calcium carbide was obtained based on the amount of acetylene.

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