A shale gas content measuring device

Abstract

The present application relates to shale gas determination device technical field, specifically a kind of shale gas gas content determination device, including desorption box and the base plate for fixing desorption box, further include: drive box, the drive box is located on the desorption box;Desorption assembly, the desorption assembly is connected with the desorption box and drive box respectively;And determination mechanism, the determination mechanism is located on the base plate, and is connected with the desorption box intercommunication;Wherein, determination mechanism includes determination box, measurement component and recovery component, the recovery component includes storage tank, nozzle and auxiliary unit, the shale gas gas content determination device of the present application, novel structure, is favorable to make the gas in shale sample rapidly discharge to determination box and carry out determination, so that the rate of desorption can be further improved, and resource can be saved, the practicability and flexibility of equipment are improved, provide convenience for staff.

Description

Technical Field

[0001] This invention relates to the field of shale gas measuring equipment technology, specifically a shale gas content measuring device. Background Technology

[0002] Shale gas refers to unconventional natural gas found in organic-rich mudstone and shale and their interlayers, mainly existing in adsorbed and free states. Its main component is methane. It is a clean and efficient energy resource and chemical raw material, mainly used for residential gas, urban heating, power generation, automobile fuel, and chemical production, with a wide range of applications.

[0003] Shale gas exploration and development has a high success rate and significant industrial economic value. Therefore, it is necessary to conduct tests to determine the gas content of gas-bearing shale samples during the exploration and development process. In these tests, the gas-bearing shale sample is often placed in a sealed cylinder, allowing for natural desorption. The gas is then extracted through a gas-conducting pipe connected to the sealed cylinder.

[0004] Existing shale gas content measuring devices typically employ crushing mechanisms to increase the desorption rate of shale gas. However, after the gas content measurement is completed, the gas is usually released, resulting in resource waste and inconvenience. Therefore, in view of the above situation, there is an urgent need to develop a shale gas content measuring device to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a shale gas content measuring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A shale gas content measuring device includes a desorption chamber and a base plate for fixing the desorption chamber, and further includes: A drive box, which is located on the desorption box; Desorption assembly, wherein the desorption assembly is connected to the desorption box and the drive box respectively; and A measuring mechanism is located on the base plate and is connected to the desorption box; The measuring mechanism includes a measuring box, a measuring component, and a recovery component. The measuring box is connected to the base plate. The measuring component is located inside the measuring box and is connected to the desorption component. The recovery component includes a storage box, a nozzle, and an auxiliary unit. The storage box is located on the base plate and is connected to the measuring box through the auxiliary unit. The top of the storage box is provided with a nozzle, which is installed in conjunction with the bottom of the desorption box.

[0007] Compared with the prior art, the beneficial effects of the present invention are: After the device is installed and debugged, manually open the sealing cover to place the sample into the desorption chamber. At this time, the space inside the desorption chamber is sealed. Then, through the operation of the desorption components, the gas contained in the shale sample is rapidly expelled. Under the action of air pressure, the expelled gas flows into the measuring chamber, which consists of two parts: a closed structure and an open structure. Appropriate amounts of clean water are placed inside the measuring chamber. When the gas flows into the measuring chamber, the water levels in the two parts change under the action of air pressure. The volume of the expelled gas can be measured using the measuring components. After the shale sample desorption and measurement are completed, the shale gas in the measurement chamber can be processed by an auxiliary component and then stored in a storage tank via a recovery component. The storage tank is equipped with an ignition module. When the next shale gas content measurement is performed, the shale gas in the storage tank can be discharged through a nozzle and ignited while the desorption component is working. This heats the desorption component, and the heat helps to quickly expel the gas from the shale sample into the measurement chamber for measurement, thereby further improving the desorption rate, saving resources, and enhancing the practicality and flexibility of the equipment. It provides convenience for staff and is worthy of promotion. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention.

[0009] Figure 2 This is a schematic diagram of the overall front view structure in an embodiment of the present invention.

[0010] Figure 3 This is a schematic diagram of the front cross-sectional structure of the desorption box in an embodiment of the present invention.

[0011] Figure 4 This is a schematic diagram of the front cross-sectional structure of the second extrusion cylinder in an embodiment of the present invention.

[0012] Figure 5 This is a side view of the broken plate portion in an embodiment of the present invention.

[0013] Figure 6 This is a schematic diagram of the front sectional view of the measuring box in an embodiment of the present invention.

[0014] In the diagram: 1-Base plate, 2-Desorption box, 3-Sealing cover, 4-Storage box, 5-Collection pipe, 6-Measuring box, 7-Scale plate, 8-Conveying pipe, 9-Collection box, 10-Dust collection pipe, 11-Drive component, 12-Drive box, 13-Ventilator, 14-Control panel, 15-Nozzle, 16-Heat-resistant pad, 17-First filter screen, 18-Diverter column, 19-Transmission component, 20-Crankshaft, 21-Connecting rod, 22-Crushing chamber, 23-First extrusion cylinder, 24-Second extrusion cylinder, 25-Auxiliary frustum, 26-Sealing partition, 27-Discharge port, 28-Extrusion head, 29-Through hole, 30-Hose, 31-Receiving cavity, 32-Sealing ring, 33-Crushing plate, 34-Extrusion chamber, 35-Gas washing bottle, 36-Second filter screen, 37-Drying layer, 38-Level sensor, 39-Floating component. Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0017] Please see Figure 1-6 The present invention provides a shale gas content measuring device, comprising a desorption chamber 2 and a base plate 1 for fixing the desorption chamber 2, and further comprising: Drive box 12, which is located on the desorption box 2; Desorption assembly, which is connected to both the desorption box 2 and the drive box 12; and A measuring mechanism is located on the base plate 1 and is connected to the desorption box 2; The measuring mechanism includes a measuring box 6, a measuring component, and a recovery component. The measuring box 6 is connected to the base plate 1. The measuring component is located inside the measuring box 6 and is connected to the desorption component. The recovery component includes a storage box 4, a nozzle 15, and an auxiliary unit. The storage box 4 is located on the base plate 1 and is connected to the measuring box 6 through the auxiliary unit. The top of the storage box 4 is provided with a nozzle 15, which is installed in conjunction with the bottom of the desorption box 2.

[0018] When it is necessary to determine the gas content of shale gas, firstly, the base plate 1, which can be in the form of a steel plate or steel frame, is fixed to the ground with bolts to secure the desorption box 2 and the drive box 12 within the designated area. The desorption box 2 is equipped with a sealing cover 3, and the drive box 12 is equipped with a vent 13 and a control panel 14. The vent 13 is located on the top of the drive box 12 to ensure air circulation and timely heat dissipation. The control panel 14 allows the operator to manually control the operation of various electrical devices. After the device is installed and debugged, the sealing cover 3 is manually opened, and the sample can be placed in the desorption box 2. At this time, the space inside the desorption box 2 is sealed. Then, the desorption components work to quickly expel the gas contained in the shale sample. Under the action of air pressure, the expelled gas flows into the measuring chamber 6, which is divided into two parts. One part is a closed structure, and the other part is an open structure. Suitable clean water is placed inside the measuring chamber 6. When gas flows into the measuring chamber 6, the water level in both parts changes under the influence of gas pressure. The volume of the discharged gas can be measured using the set measuring components. After the shale sample desorption and measurement are completed, the shale gas in the measuring chamber 6 is processed by the auxiliary components through the set recovery components and then stored in the storage chamber 4. The storage chamber 4 is equipped with an ignition module. When measuring the shale gas content again, the shale gas in the storage chamber 4 can be discharged through the nozzle 15 and ignited while the desorption components are working. This heats the desorption components, and the heat helps to quickly discharge the gas in the shale sample into the measuring chamber 6 for measurement, thereby further improving the desorption rate, saving resources, and enhancing the practicality and flexibility of the equipment. It provides convenience for staff and is worthy of promotion.

[0019] In one embodiment of the present invention, please refer to Figure 1 , Figure 3 and Figure 5 The desorption component includes: An auxiliary frustum 25 is located inside the desorption chamber 2, and the auxiliary frustum 25 and the inner wall of the desorption chamber 2 form a breaking chamber 22. The first extrusion cylinder 23 and the second extrusion cylinder 24 are located on both sides of the auxiliary frustum 25, and the first extrusion cylinder 23 and the second extrusion cylinder 24 are slidably installed in the crushing chamber 22. The crushing plate 33 is connected to the first extrusion cylinder 23 and the second extrusion cylinder 24 respectively, and is slidably connected to the crushing chamber 22 through the sealing ring 32; The extrusion chamber 34 is formed on the first extrusion cylinder 23 and extends through the crushing plate 33; Extrusion head 28, one end of which penetrates the crushing plate 33 and is connected to the second extrusion cylinder 24, and the other end of which is slidably connected to the extrusion chamber 34; and A drive unit is located inside the drive housing 12 and is connected to the first extrusion cylinder 23 and the second extrusion cylinder 24 respectively.

[0020] When the shale sample is placed in the crushing chamber 22, the drive unit starts working, driving the first extrusion cylinder 23 and the second extrusion cylinder 24 to move back and forth in opposite directions within the crushing chamber 22. This crushes the shale sample located between the first extrusion cylinder 23 and the second extrusion cylinder 24, increasing the desorption rate. As the first extrusion cylinder 23 and the second extrusion cylinder 24 move towards each other, the crushing plate 33 first comes into contact with the shale sample. The crushing plate 33 has several conical protrusions. As the two crushing plates 33 approach each other, they compress the shale sample. Simultaneously, through the extrusion chamber 34, a portion of the shale sample enters during the process of the two crushing plates 33 approaching and compressing each other. The extrusion chamber 34 can adopt an arc-shaped structure, designed to match the arc and structure of the first extrusion cylinder 23. The presence of a portion of the shale sample within the compression chamber 34 provides a buffering effect, preventing the two crushing plates 33 from directly pressurizing a large amount of shale sample. This would avoid excessive stress on the first and second compression cylinders 23 and 24, which could easily damage them. Once a portion of the shale sample enters the compression chamber 34, the compression head 28, which is designed to work in conjunction with the structure of the compression chamber 34, enters the chamber as the first and second compression cylinders 23 and 24 approach each other. This head then crushes the shale sample within the chamber. The reciprocating motion of the first and second compression cylinders 23 and 24 improves the crushing effect of the shale sample within the crushing chamber 22, allowing the gas within the shale sample to be completely and quickly expelled. This facilitates accurate determination of the gas content and avoids errors.

[0021] In one embodiment of the present invention, the driving unit includes: Drive component 11, which is located on the drive housing 12; A crankshaft 20, one end of which passes through the drive housing 12 and is connected to the output end of the drive component 11, and the other end of which is rotatably mounted on the inner wall of the drive housing 12. There are two sets of crankshafts 20, connected by a transmission component 19. Connecting rod 21, one end of which is rotatably connected to crankshaft 20, there are two sets of connecting rods 21, and the other ends of the two sets of connecting rods 21 are respectively hinged to the first extrusion cylinder 23 and the second extrusion cylinder 24.

[0022] The operation is started by a drive component 11, which can be in the form of a motor. After the drive component 11 is started, it drives the crankshaft 20 to rotate. Through a transmission component 19, which can be a structure with two sets of meshing gears, the crankshaft 20 is driven to rotate. When the crankshaft 20 rotates, it pushes and pulls the first extrusion cylinder 23 and the second extrusion cylinder 24 to reciprocate in the crushing chamber 22 via two sets of connecting rods 21. During the movement of the first extrusion cylinder 23 and the second extrusion cylinder 24, they are rotatably connected to the shaft on the auxiliary truncated cone 25 through an L-shaped connecting rod, which can ensure the smoothness of the movement of the first extrusion cylinder 23 and the second extrusion cylinder 24. The auxiliary truncated cone 25 is provided with a sealing partition 26, which is an arc-shaped structure and can be set in size according to actual needs to ensure the sealing between the first extrusion cylinder 23 and the second extrusion cylinder 24.

[0023] In one embodiment of the present invention, please refer to Figure 1-4 and Figure 6 The measurement component includes: A receiving cavity 31 is formed on the second extrusion cylinder 24; A flexible hose 30 is located inside the receiving cavity 31, and one end of the flexible hose 30 is connected to the crushing cavity 22 through a through hole 29; The delivery pipe 8 has one end connected to the other end of the hose 30, and the other end of the delivery pipe 8 is installed through the measuring box 6. A scale plate 7, which is fixedly installed on one side of the measuring chamber 6; and The float 39 is located inside the measuring box 6 and is installed in conjunction with the scale plate 7.

[0024] During the continuous crushing of the shale sample between the first extrusion cylinder 23 and the second extrusion cylinder 24, the generated gas can enter the hose 30 through the through hole 29. Through the hose 30, the delivery pipe 8 remains connected to the crushing chamber 22 during the reciprocating motion of the second extrusion cylinder 24. When gas is generated in the crushing chamber 22, the pressure inside the chamber increases. Since shale gas is lighter than air, it is transported through the delivery pipe 8 to the measuring chamber 6 and accumulates in the left space of the measuring chamber 6. Because the measuring chamber 6 contains water, the shale gas in the left space is isolated from the external space. Under the action of gas pressure, the water level on the right side of the measuring chamber 6 rises. The water level can be measured using the scale plate 7. In addition to measuring the volume of gas, a float 39 is used, which can be in the form of a dyed buoyancy plate to facilitate visual observation of height changes. When the first extrusion cylinder 23 and the second extrusion cylinder 24 move in opposite directions, the water level in the measuring chamber 6 will change back and forth due to the pressure difference. However, since the shale sample continuously produces gas, the amplitude of each back-and-forth change in water level will be different. Therefore, the change in amplitude can be observed by the staff or detected by electronic instruments to determine whether the gas contained in the shale sample has been completely released. When the amplitude and frequency of the rise and fall of the float 39 are the same, it proves that the gas in the shale sample has been completely discharged, which is beneficial for accurately measuring the gas content in the shale sample.

[0025] In one embodiment of the present invention, please refer to Figure 1 and Figure 6 The auxiliary unit includes: Gas washing bottle 35, which is located inside the measuring chamber 6 and is sleeved on the delivery pipe 8; The second filter 36 and the drying layer 37 are both located inside the gas washing bottle 35 and are installed through the delivery pipe 8. The second filter 36 is located in the middle of the gas washing bottle 35 and the drying layer 37 is located at the top of the gas washing bottle 35. A liquid level sensor 38 is connected to the outer wall of the gas washing bottle 35; and The collection tube 5 has one end installed through the measuring box 6, and the other end is connected to the storage box 4.

[0026] During the process of gas being transported from the delivery pipe 8 to the measuring chamber 6, a gas washing bottle 35 is provided, which also contains suitable clean water. The output port of the delivery pipe 8 is located in the clean water, which can be used to cool the gas and prevent measurement errors caused by the gas being heated and discharged by the recovery component. The second filter 36 and the drying layer 37 are provided to filter and dry the gas. The liquid level sensor 38 is provided to prevent the water level in the measuring chamber 6 from becoming too high and entering the gas washing bottle 35. After the gas measurement is completed, the gas is collected through the collection pipe 5, which is equipped with a valve. The valve is installed as close as possible to the measuring chamber 6 to prevent some shale gas from entering the collection pipe 5 and causing measurement errors. When the valve is opened, the shale gas in the measuring chamber 6 can enter the storage tank 4 for storage, so that it can be used in the next measurement.

[0027] In one embodiment of the present invention, please refer to Figure 2 It also includes a heat-resistant pad 16, which is located on the bottom of the desorption box 2 and is installed in conjunction with the nozzle 15.

[0028] When a flame appears at the top of the nozzle 15, the heat-resistant pad 16, which can be made of steel plate or asbestos mesh, can protect the bottom of the desorption box 2 from burning. On the other hand, it can evenly transfer heat to the bottom of the desorption box 2 and make the shale sample in the crushing chamber 22 evenly heated, thereby accelerating the discharge of the gas generated in the crushing chamber 22.

[0029] In one embodiment of the present invention, please refer to Figure 1-3 It also includes: a storage box 9, which is connected to the base plate 1; Dust collection pipe 10, one end of which is located inside the storage box 9, and the other end of which is fixedly installed on the desorption box 2 and connected to the crushing chamber 22 through the discharge port 27; The first filter 17 is connected to the inner wall of the storage box 9; and The diversion column 18 is located on the middle part of the first filter screen 17 and is installed in conjunction with the dust collection pipe 10.

[0030] When the amplitude and frequency of the floating element 39 are approximately the same each time in the measuring chamber 6, it can be confirmed that the desorption of the shale sample is complete. Then, the crushed shale sample in the crushing chamber 22 can be extracted through the dust collection pipe 10, which is equipped with a suction device and valve. The dust collection pipe 10 is equipped with a suction device and valve, so that the sample can be extracted through the discharge port 27. The discharge port 27 is equipped with a filter screen. The extracted sample is discharged through the dust collection pipe 10 and falls onto the diversion column 18. The top of the diversion column 18 is a hemispherical structure, so that the sample fragments can be evenly scattered on the first filter screen 17 for filtration. The excessively large particles of the fragments are re-tested to avoid errors.

[0031] In summary, after the device is installed and debugged, manually opening the sealing cover 3 allows the sample to be placed in the desorption chamber 2. At this time, the space inside the desorption chamber 2 is sealed. Then, through the operation of the desorption components, the gas contained in the shale sample can be rapidly discharged. Under the action of air pressure, the discharged gas flows into the measuring chamber 6. The measuring chamber 6 consists of two parts: a closed structure and an open structure. Appropriate amounts of clean water are placed inside the measuring chamber 6. When the gas flows into the measuring chamber 6, the water levels in the two parts of the measuring chamber 6 change under the action of air pressure. The volume of the discharged gas can be measured using the set measuring components. After the shale sample desorption and measurement are completed, the shale gas in the measurement chamber 6 can be processed by the auxiliary components through the set recovery component and then stored in the storage chamber 4. The storage chamber 4 is equipped with an ignition module. When the shale gas content is measured again, the shale gas in the storage chamber 4 can be discharged through the nozzle 15 and ignited while the desorption component is working. This heats the desorption component, and the heat helps to quickly discharge the gas in the shale sample into the measurement chamber 6 for measurement, thereby further improving the desorption rate, saving resources, improving the practicality and flexibility of the equipment, and providing convenience for the staff.

[0032] It should be noted that, in this invention, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A shale gas content measuring device, comprising a desorption chamber and a base plate for fixing the desorption chamber, characterized in that, Also includes: A drive box, which is located on the desorption box; A desorption assembly, which is connected to both the desorption box and the drive box; as well as A measuring mechanism is located on the base plate and is connected to the desorption box; The measuring mechanism includes a measuring box, a measuring component, and a recovery component. The measuring box is connected to the base plate. The measuring component is located inside the measuring box and is connected to the desorption component. The recovery component includes a storage box, a nozzle, and an auxiliary unit. The storage box is located on the base plate and is connected to the measuring box through the auxiliary unit. The top of the storage box is provided with a nozzle, which is installed in conjunction with the bottom of the desorption box. The desorption assembly includes an auxiliary frustum located inside the desorption chamber, and the auxiliary frustum and the inner wall of the desorption chamber form a breaking chamber. The first extrusion cylinder and the second extrusion cylinder are located on both sides of the auxiliary truncated cone, and the first extrusion cylinder and the second extrusion cylinder are slidably installed in the crushing chamber. The crushing plate is connected to the first extrusion cylinder and the second extrusion cylinder respectively, and is slidably connected to the crushing chamber through a sealing ring; An extrusion chamber is formed on the first extrusion cylinder and extends through the crushing plate; An extrusion head, one end of which penetrates the crushing plate and is connected to the second extrusion cylinder, and the other end of which is slidably connected to the extrusion chamber; and A drive unit is located inside the drive housing and is connected to the first extrusion cylinder and the second extrusion cylinder respectively; The storage box is equipped with an ignition module. When the shale gas content is measured again, the shale gas in the storage box is discharged through the nozzle and ignited while the desorption component is working. This heats the desorption component, and the heat helps to quickly discharge the gas in the shale sample into the measuring box for measurement, thereby further improving the desorption rate.

2. The shale gas content measuring device according to claim 1, characterized in that, The driving unit includes: A drive unit, which is located on the drive housing; A crankshaft, one end of which passes through the drive housing and connects to the output end of the drive component, and the other end of which is rotatably mounted on the inner wall of the drive housing. There are two sets of crankshafts, connected by a transmission component. A connecting rod, one end of which is rotatably connected to the crankshaft, and there are two sets of connecting rods. The other ends of the two sets of connecting rods are respectively hinged to the first extrusion cylinder and the second extrusion cylinder.

3. The shale gas content measuring device according to claim 2, characterized in that, The measurement component includes: A receiving cavity is formed on the second extrusion cylinder; A flexible hose is located within the receiving cavity, and one end of the hose is connected to the crushing cavity through a through hole; A delivery pipe, one end of which is connected to the other end of the flexible hose, and the other end of which is installed through the measuring box; A scale plate, the scale plate being fixedly mounted on one side of the measuring chamber; and A float is located inside the measuring chamber and is installed in conjunction with the scale plate.

4. The shale gas content measuring device according to claim 3, characterized in that, The auxiliary unit includes: A gas washing bottle is located inside the measuring chamber and is fitted onto the delivery pipe. The second filter and the drying layer are both located inside the gas washing bottle and are installed through the delivery pipe. The second filter is located in the middle of the gas washing bottle and the drying layer is located at the top of the gas washing bottle. A liquid level sensor, the liquid level sensor being connected to the outer wall of the gas washing bottle; and A collection tube, one end of which is installed through the measuring box, and the other end of which is connected to the storage box.

5. The shale gas content measuring device according to any one of claims 1-4, characterized in that, Also includes: A heat-resistant pad is located at the bottom of the desorption chamber and is installed in conjunction with the nozzle.

6. The shale gas content measuring device according to claim 1, characterized in that, Also includes: A storage box, which is connected to the base plate; A dust collection pipe, one end of which is located inside the storage box, and the other end of which is fixedly installed on the desorption box and connected to the crushing chamber through the discharge port; The first filter screen is connected to the inner wall of the storage box; as well as The diversion column is located in the middle of the first filter screen and is installed in conjunction with the dust collection pipe.

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