Ultrasonic cavitation erosion experimental equipment for deep coalbed methane reservoir sediments

Abstract

The utility model relates to the technical field of coal seam mining devices, and particularly discloses ultrasonic cavitation erosion experimental equipment for deep coal seam gas reservoir sediments, which comprises an ultrasonic generator and a radiation head, one end of the radiation head is arranged at the upper part of an ultrasonic noise reduction box, and the other end of the radiation head extends downwards along the vertical direction; the lifting test bench is located below the radiation head; the object carrying plate is arranged on an object placing seat of the lifting experiment table in a sliding manner and can slide along the horizontal direction; the interlayer beaker is placed on the carrying plate, and a coal sample is placed in the interlayer beaker; a water inlet and a water outlet of the cooling circulating water machine are communicated with the interlayer of the interlayer beaker; according to the utility model, the distance between the radiation head and the coal sample can be adjusted; and the radiation head can be withdrawn from the interlayer beaker, so that a user can conveniently pull the carrying plate to take out the beaker from the ultrasonic noise reduction box, interference of the radiation head is prevented, and the user can conveniently take and place the beaker.

Description

Technical Field

[0001] This utility model relates to the technical field of coal seam mining equipment, and in particular to an ultrasonic cavitation test device for sediments in deep coalbed methane reservoirs. Background Technology

[0002] Ultrasonic (sound waves with frequencies higher than 20kHz) permeation enhancement technology, as a type of physical field permeation enhancement technology, has been widely used in conventional oil and gas production enhancement and coalbed methane reservoir stimulation. During ultrasonic excitation, when water is used as the medium to excite the coal body, a large number of cavitation bubbles are generated. When the pressure reaches a certain value, the bubbles rapidly contract, expand, and rupture, generating shock waves that damage the pore and fracture structure of the coal body, effectively improving the efficiency of coalbed methane extraction.

[0003] Before extracting gas from the gas reservoir in a deep coal seam, it is necessary to sample the sediments in the gas reservoir, place the coal sample in a beaker, and conduct an ultrasonic cavitation experiment on the sampled coal sample using an ultrasonic generator.

[0004] In the cavitation erosion experiment, the coal sample needs to be placed in a water bath environment at a certain temperature, and then the ultrasonic generator's radiator head is used to deliver ultrasonic excitation to the collected coal sample to achieve the experimental purpose of acoustic-liquid coupling ultrasonic excitation of the coal sample, and to measure the cavitation erosion effect of the ultrasonic waves on the coal sample.

[0005] However, in order to determine the cavitation effect of ultrasound on different coal samples, it is necessary to change the distance between the coal sample and the radiating head of the ultrasound generator. The radiating head of the ultrasound generator needs to penetrate into the beaker at different depths, which is inconvenient for users to pick up and put down the beaker. Utility Model Content

[0006] In view of the above problems, this utility model provides an ultrasonic cavitation test device for sediments in deep coalbed methane reservoirs. Its purpose is to achieve a certain distance between the radiation head and the coal sample, so as to facilitate the user to pick up and put down the beaker.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An ultrasonic cavitation test apparatus for sediments in deep coalbed methane reservoirs is provided, comprising: an ultrasonic noise reduction chamber; an ultrasonic generator and a radiator connected by a wire; one end of the radiator is located at the top of the ultrasonic noise reduction chamber, and the other end extends downward vertically; a lifting test platform installed inside the ultrasonic noise reduction chamber, located below the radiator; the base of the lifting test platform is fixedly located at the bottom of the ultrasonic noise reduction chamber, and the platform seat can move vertically; a carrying plate slidably mounted on the carrying plate and capable of sliding horizontally; a jacketed beaker placed on the carrying plate, the interior of which is used to hold coal samples; and a cooling circulating water machine, the inlet and outlet of which are both connected to the jacket of the jacketed beaker for circulating cooling medium into the jacket of the beaker.

[0009] Furthermore, a manual lifting platform was selected for the lifting experimental platform.

[0010] Furthermore, the device also includes: a chute formed within the storage base, with the carrying plate slidably disposed within the chute; a locking hole formed within the storage base; a locking pin that can be inserted into the locking hole and slidably mounted within the carrying plate; a spring, one end abutting against the locking pin and the other end abutting against the carrying plate, providing the locking pin with a tendency to move close to the locking hole; a pull rod, one end for the user to pull, and the other end slidably disposed within the carrying plate; and a steel wire threaded through the carrying plate, one end connected to the locking pin and the other end connected to the pull rod.

[0011] Furthermore, along the sliding direction of the carrier plate, two sets of locking holes are provided on the storage seat at fixed intervals, wherein each set of locking holes includes at least two locking holes.

[0012] Furthermore, the device also includes a pull ring, which is installed at one end of the pull rod.

[0013] Furthermore, the device also includes: a guide wheel, which is rotatably mounted inside the carrying plate; and an annular groove for embedding steel wire is provided on the guide wheel.

[0014] The beneficial effects of this utility model are as follows: by using this utility model, the height of the jacketed beaker can be adjusted vertically, which not only makes it easier for the radiation head to penetrate into the beaker and adjust the distance between the radiation head and the coal sample, but also allows the radiation head to be removed from the jacketed beaker, making it easier for the user to pull the carrying plate and take the beaker out of the ultrasonic noise reduction box, preventing interference from the radiation head and making it easier for the user to pick up and put down the beaker. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall installation of the experimental equipment provided in the embodiments of this application.

[0016] Figure 2This is a schematic diagram of the internal installation of the carrier plate provided in an embodiment of this application.

[0017] Figure 3 for Figure 2 Enlarged diagram of point A.

[0018] Among them, 1. Ultrasonic noise reduction box; 2. Ultrasonic generator; 21. Radiation head; 3. Lifting experimental platform; 31. Base; 32. Placement seat; 4. Carrier plate; 5. Jacketed beaker; 6. Cooling circulating water machine; 71. Guide wheel; 72. Locking hole; 73. Locking pin; 74. Spring; 75. Pull rod; 76. Steel wire; 77. Pull ring. Detailed Implementation

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figure 1 As shown in the embodiment of this application, an ultrasonic cavitation test device for sediments in deep coalbed methane reservoirs is disclosed, comprising: an ultrasonic noise reduction chamber 1; an ultrasonic generator 2 and a radiator 21, the ultrasonic generator 2 and the radiator 21 being wired together; one end of the radiator 21 being disposed at the upper part of the ultrasonic noise reduction chamber, and the other end of the radiator 21 extending downward in the vertical direction; a lifting test platform, installed inside the ultrasonic noise reduction chamber 1, located below the radiator 21; the base 31 of the lifting test platform being fixedly disposed at the lower part of the ultrasonic noise reduction chamber 1 by screws, and the placement seat 32 of the lifting test platform being able to move up and down in the vertical direction; a carrying plate 4, slidably disposed on the placement seat 32 of the lifting test platform 3, and being able to slide in the horizontal direction; a jacketed beaker 5, placed on the carrying plate 4, the interior of the jacketed beaker 5 being used to place coal samples; and a cooling circulating water machine 6, the inlet and outlet of the cooling circulating water machine 6 being connected to the jacket of the jacketed beaker 5, for circulating and supplying cooling medium to the jacket of the jacketed beaker 5.

[0021] Specifically, the collected coal sample is placed inside the sandwiched beaker 5. Then, the carrier plate 4 is manually pulled out of the ultrasonic noise reduction box 1 by a certain distance. The sandwiched beaker 5 is placed on the carrier plate 4, and the carrier plate 4 is pushed back into the ultrasonic noise reduction box 1. The height of the lifting experimental platform's seat 32 is then adjusted to move the sandwiched beaker 5 upward, allowing the radiation head 21 to penetrate into the sandwiched beaker 5 until the distance between the radiation head 21 and the coal sample meets the experimental requirements.

[0022] By using this utility model, the height of the jacketed beaker 5 can be adjusted vertically, which not only makes it easier for the radiation head 21 to penetrate into the beaker and adjust the distance between the radiation head 21 and the coal sample, but also allows the radiation head 21 to be removed from the jacketed beaker 5, making it easier for the user to pull the carrying plate 4 to take the beaker out of the ultrasonic noise reduction box 1, preventing interference from the radiation head 21, and making it easier for the user to pick up and put down the beaker.

[0023] It is worth mentioning that the coal sample can be in powder, cylindrical, or cubic form.

[0024] It is worth mentioning that the ultrasonic noise reduction box 1 is an ultrasonic soundproof cover that is currently available on the market. It is mainly used to prevent the noise emitted by the ultrasonic generator 2 through the radiating head 21.

[0025] It is worth mentioning that the temperature of the coal sample will rise during acoustic-liquid coupling ultrasonic excitation. In this invention, the inlet and outlet of the cooling water circulation machine 6 are connected to the jacket of the jacketed beaker 5 through pipe fittings. The cooling water circulation machine 6 uses a compressor for refrigeration. In this embodiment, water is selected as the cooling medium. The cooling water circulation machine 6 can circulate and transport water in the jacket, which can help cool the coal sample, prevent the coal sample temperature from being too high, and ensure the experimental quality.

[0026] Specifically, the lifting test platform 3 can be a manual lifting platform, a hydraulic lifting platform, or an electric lifting platform.

[0027] Reference Figure 2 and Figure 3 As shown, the device also includes: a slide groove, formed within the storage base 32, with the carrying plate 4 slidably disposed within the slide groove; a locking hole 72, formed within the storage base 32; a locking pin 73, capable of being inserted into the locking hole 72 and slidably mounted within the carrying plate 4; a spring 74, one end abutting against the locking pin 73 and the other end abutting against the carrying plate 4, providing the locking pin 73 with a tendency to move close to the locking hole 72; a pull rod 75, one end for the user to pull, and the other end slidably disposed within the carrying plate 4; and a steel wire 76, passing through the carrying plate 4, one end connected to the locking pin 73 and the other end connected to the pull rod 75.

[0028] It is worth mentioning that the loading platform 4 can be assembled from two layers of plates, and the two layers of plates can be fixed with screws.

[0029] In this embodiment, by pulling the lever 75, the user can drive the steel wire 76 to pull the locking pin 73 to compress the spring 74, and the locking pin 73 will disengage from the locking hole 72, thus unlocking the carrying plate 4. At this time, the user can move the carrying plate 4 to send the sandwich beaker 5 out of the ultrasonic noise reduction box 1.

[0030] Specifically, along the sliding direction of the carrier plate 4, two sets of locking holes 72 are provided on the placement base 32 at fixed intervals, wherein each set of locking holes 72 includes at least two locking holes 72.

[0031] Among them, the two locking holes 72 of each set of locking holes 72 are respectively opened on both sides of the carrier plate 4; by setting two sets of locking holes 72, the carrier plate 4 can be locked and positioned in the ultrasonic noise reduction box 1 or in the ultrasonic noise reduction box 1, which facilitates the replacement of the jacketed beaker 5.

[0032] Preferably, the device also includes a pull ring 77, which is installed at one end of the pull rod 75 for easy handholding by the user.

[0033] Preferably, the device further includes: a guide wheel 71, which is rotatably mounted inside the carrier plate 4; and an annular groove for embedding the steel wire 76 is provided on the guide wheel 71, so as to guide the movement of the steel wire 76, assist in positioning the steel wire 76, and improve the stability of movement.

[0034] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. An ultrasonic cavitation test device for sediments in deep coalbed methane reservoirs, characterized in that, include: Ultrasonic noise reduction box (1); An ultrasonic generator (2) and a radiator (21) are connected by a wire; one end of the radiator (21) is located at the top of the ultrasonic noise reduction box, and the other end of the radiator (21) extends downward in the vertical direction. The lifting test platform is installed inside the ultrasonic noise reduction box (1) and is located below the radiating head (21); the base (31) of the lifting test platform is fixedly set at the lower part of the ultrasonic noise reduction box (1), and the placement seat (32) of the lifting test platform can move up and down in the vertical direction. The loading plate (4) is slidably mounted on the storage seat (32) of the lifting experimental platform (3) and can slide in the horizontal direction; A jacketed beaker (5) is placed on a support plate (4), and a coal sample is placed inside the jacketed beaker (5). The cooling water circulation machine (6) has its inlet and outlet connected to the jacket of the jacketed beaker (5) and is used to circulate and deliver cooling medium to the jacket of the jacketed beaker (5).

2. The ultrasonic cavitation test equipment for deep coalbed methane reservoir sediments according to claim 1, characterized in that, The lifting experimental platform (3) is a manual lifting platform.

3. The ultrasonic cavitation experimental equipment for deep coalbed methane reservoir sediments according to claim 1, characterized in that, Also includes: A chute is provided in the storage seat (32), and the carrying plate (4) is slidably disposed in the chute; A locking hole (72) is provided inside the storage base (32); The locking pin (73) can be inserted into the locking hole (72) and is slidably mounted in the carrier plate (4); A spring (74) abuts against a locking pin (73) at one end and against a carrying plate (4) at the other end, providing a tendency for the locking pin (73) to move close to the locking hole (72); A pull rod (75) has one end for the user to pull and the other end that can be slidably installed inside the loading plate (4); A steel wire (76) is threaded through the loading plate (4), with one end connected to a locking pin (73) and the other end connected to a pull rod (75).

4. The ultrasonic cavitation test equipment for deep coalbed methane reservoir sediments according to claim 3, characterized in that, Along the sliding direction of the carrier plate (4), two sets of locking holes (72) are provided on the storage seat (32) at fixed intervals, wherein each set of locking holes (72) includes at least two locking holes (72).

5. The ultrasonic cavitation test equipment for deep coalbed methane reservoir sediments according to claim 3, characterized in that, It also includes a pull ring (77), which is installed at one end of the pull rod (75).

6. The ultrasonic cavitation test equipment for deep coalbed methane reservoir sediments according to claim 3, characterized in that, Also includes: The guide wheel (71) is rotatably mounted inside the carrier plate (4); and an annular groove for embedding the steel wire (76) is provided on the guide wheel (71).

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