A temperature-controlled water bath for coal-bed gas, shale gas field samples

Abstract

The utility model discloses temperature control water bath box technical field, especially be related to a coal bed gas, shale gas field sample's temperature control water bath box, including water bath box body, the inside and outside of water bath box body is commonly equipped with temperature control assembly, and temperature control assembly includes the servo motor of fixed mounting at water bath box body bottom, and the output fixedly connected with transmission shaft of servo motor, and the output fixedly connected with the stirring rod of U shape structure of transmission shaft, and multiple water injection holes are seted up on the side wall of stirring rod near water bath box body middle position, and the outside rotation sleeve of transmission shaft is equipped with the water injection sleeve, and the inside of transmission shaft is equipped with the communicating cavity, and the communicating hole of corresponding water injection sleeve each other is seted up on the outer wall of transmission shaft. The utility model discloses through multi -point water injection temperature adjustment help to realize higher temperature uniformity, ensure that water bath box temperature distribution is more even, and multi -point water injection can accelerate the heat conduction process of water in water bath box, make water temperature reach and stabilize at the set value more quickly.

Description

Technical Field

[0001] This utility model relates to the technical field of temperature-controlled water bath boxes, specifically a temperature-controlled water bath box for field samples of coalbed methane and shale gas. Background Technology

[0002] Coalbed methane, also known as coal mine gas, is a gas found in coal seams, primarily composed of methane, and may contain small amounts of carbon dioxide, nitrogen, and other hydrocarbon gases. Shale gas is an unconventional oil and gas produced in extremely low-porosity, low-permeability shale formations, characterized by self-generation, self-storage, and continuous accumulation. Both coalbed methane and shale gas are typically stored deep underground under specific temperature and pressure conditions. Placing samples in a temperature-controlled water bath can simulate the temperature conditions of the underground environment, making the experimental results closer to reality.

[0003] The physical and chemical properties of coalbed methane and shale gas samples can be significantly affected by ambient temperature. Temperature-controlled water baths provide a constant temperature environment, ensuring that the sample temperature remains stable during testing or analysis, thereby eliminating or reducing the impact of ambient temperature fluctuations on test results. Temperature-controlled water baths, also known as constant-temperature water baths, are commonly used laboratory equipment. Their working principle mainly involves key components such as heating devices, temperature control systems, and circulation systems.

[0004] According to the search, a temperature-controlled water bath for geological exploration sample processing (application number: 202210732681.5) is provided with a stirring mechanism for stirring water on the body of the bath and located in the water tank; the side wing plates are unfolded relative to the stirring cylinder, and the faster the rotation speed, the greater the unfolding range of the side wing plates, and the greater the stirring effect on the water. That is, the side wing plates act as the blades of the stirring column, further improving the fluidity of the water in the water tank.

[0005] In existing technical solutions, temperature-controlled water baths mainly heat the water inside through heating components and use a stirring mechanism to make the water inside the bath circulate rapidly. This allows the heated water to flow quickly and disperse throughout the entire water bath, thus changing the water temperature. However, this method still relies on the diffusion of the high-temperature water at the heating point to regulate the water temperature inside the bath. It cannot directly deliver the high-temperature water to multiple points inside the water bath to achieve multi-point temperature regulation and enable rapid temperature regulation throughout the entire water bath.

[0006] Therefore, we propose a temperature-controlled water bath for field samples of coalbed methane and shale gas. Utility Model Content

[0007] The purpose of this invention is to provide a temperature-controlled water bath for field samples of coalbed methane and shale gas. By injecting water at multiple points to regulate the temperature, it helps to achieve higher temperature uniformity, ensuring a more uniform temperature distribution within the water bath. Furthermore, multi-point water injection can accelerate the heat conduction process of the water within the water bath, allowing the water temperature to reach and stabilize at the set value more quickly, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a temperature-controlled water bath for field samples of coalbed methane and shale gas, comprising a water bath body and a servo motor, wherein a temperature control component is provided both inside and outside the water bath body, and the servo motor is fixedly installed at the bottom of the water bath body;

[0009] A drive shaft is fixedly connected to the output end of the servo motor.

[0010] A stirring rod is fixedly connected to the output end of the drive shaft. The stirring rod has a U-shaped structure and a hollow interior. A water injection hole is provided on the side wall of the stirring rod near the middle of the water bath.

[0011] A water injection sleeve is rotatably sleeved outside the drive shaft;

[0012] A connecting cavity is formed in the middle of the drive shaft.

[0013] A connecting hole is provided on the outer wall of the drive shaft. The connecting hole corresponds to the water injection sleeve. The water injection sleeve is interconnected with the water injection hole through the connecting hole, the connecting cavity, the stirring rod, and the water injection hole.

[0014] Preferably, a cold water valve pipe is fixedly installed on the front end face of the water injection sleeve, and a hot water valve pipe is fixedly installed on the left side wall of the water injection sleeve.

[0015] Preferably, the water bath chamber is provided with a sample tube support assembly both inside and outside, and the sample tube support assembly includes a support frame tube fixedly installed inside the water bath chamber.

[0016] Preferably, a dial is fixedly installed at the middle position of the top of the support frame, multiple through holes communicating with the water bath are opened on the side wall of the support frame, and multiple test tube assembly slots are opened on the upper end face of the support frame.

[0017] Preferably, a connector is fixedly installed at the bottom end of the support frame, and two symmetrically distributed springs are fixedly installed inside the connector. A sliding plug is fixedly installed at the end of the spring away from the connector, and the sliding plug and the connector are slidably connected.

[0018] Preferably, the top surface of the drive shaft is provided with a plug hole, and the side wall of the plug hole is provided with a plug groove that matches the top of the sliding plug. The top of the plug groove is a hemispherical structure.

[0019] Preferably, a support cover is provided on the upper part of the water bath tank, and a sealing ring that matches the size of the support cover is fixedly installed on the upper side wall of the water bath tank. A sealing strip is embedded on the upper end face of the sealing ring.

[0020] Preferably, a drain valve pipe is fixedly installed at the bottom of the side wall of the water bath tank, and the drain valve pipe is connected to the interior of the water bath tank.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The multiple water injection holes of this utility model allow cold or hot water to be injected into various areas of the water bath through the water injection holes, achieving the effect of multi-point water injection and temperature regulation. Multi-point water injection and temperature regulation helps to achieve higher temperature uniformity, thereby improving the accuracy and reliability of the experiment. It can ensure that the temperature distribution in the water bath is more uniform, thereby reducing experimental errors caused by temperature gradients. In addition, multi-point water injection can accelerate the heat conduction process of water in the water bath, so that the water temperature reaches and stabilizes at the set value more quickly.

[0023] 2. This utility model uses the weight of the supporting frame and the supporting cover to compress the sealing strip on the sealing ring, thereby ensuring the sealing performance at the connection. Good sealing performance can more effectively maintain the set temperature, reduce temperature fluctuations caused by external environmental interference such as air flow and temperature fluctuations, and more effectively retain heat during the heating and temperature adjustment process, reducing energy waste caused by heat loss. Attached Figure Description

[0024] Figure 1 This is an overall structural view of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the water bath tank of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the water bath tank of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure between the water bath tank and the supporting frame of this utility model;

[0028] Figure 5 This utility model Figure 3 Enlarged view of a portion of point A in the middle;

[0029] Figure 6 This is a schematic diagram of the water injection sleeve connection structure of this utility model.

[0030] In the diagram: 1. Water bath chamber; 2. Sample tube support assembly; 201. Support frame; 202. Dial; 203. Test tube assembly slot; 204. Support cover; 205. Through hole; 206. Plug; 207. Spring; 208. Sliding plug; 209. Plug groove; 210. Plug hole; 3. Drain valve pipe; 4. Sealing ring; 5. Temperature control assembly; 501. Water injection sleeve; 502. Cold water valve pipe; 503. Hot water valve pipe; 504. Connecting hole; 505. Connecting cavity; 506. Water injection hole; 507. Servo motor; 508. Drive shaft; 509. Stirring rod; 6. Sealing strip. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-6 This utility model provides a technical solution: a temperature-controlled water bath for field samples of coalbed methane and shale gas, comprising a water bath body 1 and a servo motor 507. A temperature control component 5 is provided both inside and outside the water bath body 1. The servo motor 507 is fixedly installed at the bottom of the water bath body 1. A drive shaft 508 is fixedly connected to the output end of the servo motor 507. A stirring rod 509 is fixedly connected to the output end of the drive shaft 508. The stirring rod 509 has a U-shaped structure and a hollow interior. A water injection hole 506 is provided on the side wall of the stirring rod 509 near the middle of the water bath body 1. A water injection sleeve 501 is rotatably sleeved on the outside of the drive shaft 508, connecting... A cavity 505 is connected to the middle of the drive shaft 508. A connecting hole 504 is opened on the outer wall of the drive shaft 508. The connecting hole 504 corresponds to the water injection sleeve. The water injection sleeve 501 is interconnected with the water injection hole 506 through the connecting hole 504, the connecting cavity 505, the stirring rod 509, and the water injection hole 506. A cold water valve pipe 502 is fixedly installed on the front end face of the water injection sleeve 501. A hot water valve pipe 503 is fixedly installed on the left side wall of the water injection sleeve 501. The sample tube bearing assembly 2 is provided both inside and outside the water bath 1. The sample tube bearing assembly 2 includes a bearing frame cylinder 201 fixedly installed inside the water bath 1. Multiple test tube assembly slots 203 are opened on the upper end face of the bearing frame cylinder 201.

[0033] In use, the support frame 201 is inserted into the water bath 1, allowing test tubes containing coalbed methane or shale gas to be placed in the test tube assembly slot 203. The temperature inside the water bath is adjusted according to the temperature requirements of the coalbed methane and shale gas samples. The cold water valve 502 or hot water valve 503 is opened based on the required internal temperature. The valve, through the water injection sleeve 501 and the connecting hole 504, connects to the connecting cavity 505, allowing cold or hot water to be injected into the connecting cavity 505. The connecting cavity 505 then... The hollow stirring rod 509 is designed to allow water to be injected into it. Increased water pressure from the external water injection system fills the stirring rod 509 completely. Multiple water injection holes 506 on the stirring rod 509 allow cold or hot water to be injected into various areas of the water bath 1. This multi-point water injection helps achieve higher temperature uniformity, thereby improving the accuracy and reliability of the experiment. It also ensures a more uniform temperature distribution within the water bath, reducing experimental errors caused by temperature gradients. Furthermore, multi-point water injection accelerates the heat conduction process within the water bath, allowing the water temperature to reach and stabilize at the set value more quickly. At the same time, it can avoid the problem of excessively high water temperature in some areas of the water bath caused by relying on the self-diffusion of high-temperature water at a single heating point to regulate the water temperature in the water bath. The servo motor 507 is started, and the operation of the servo motor 507 can drive the drive shaft 508 to rotate. This allows the drive shaft 508 to drive the stirring rod 509 to rotate, thereby adjusting the position of multiple water injection holes 506 on the stirring rod 509, thus realizing multi-position water injection through the water injection holes 506. Furthermore, the stirring can also accelerate the self-diffusion of water, thereby achieving rapid water temperature regulation.

[0034] Reference embodiment: A cold water valve pipe 502 is fixedly installed on the front end face of the water injection sleeve 501, and a hot water valve pipe 503 is fixedly installed on the left side wall of the water injection sleeve 501. A sample tube support assembly 2 is provided both inside and outside the water bath 1. The sample tube support assembly 2 includes a support frame cylinder 201 fixedly installed inside the water bath 1. A dial 202 is fixedly installed at the middle of the top of the support frame cylinder 201. Multiple through holes 205 communicating with the water bath 1 are opened on the side wall of the support frame cylinder 201. Multiple test tube assembly slots 203 are opened on the upper end face of the support frame cylinder 201. A dial 202 is fixedly installed at the middle of the top of the support frame cylinder 201. Multiple through holes 205 communicating with the water bath 1 are opened on the side wall of the support frame cylinder 201. A connector 206 is fixedly installed at the bottom end of the support frame cylinder 201. Two symmetrically distributed springs 207 are fixedly installed inside the connector 206. A sliding plug 208 is fixedly installed at the end of 207 away from the connector 206. The top of the plug groove 209 is a hemispherical structure. The sliding plug 208 and the connector 206 are slidably connected. The top surface of the drive shaft 508 is provided with a plug hole 210. The side wall of the plug hole 210 is provided with a plug groove 209 that matches the top of the sliding plug 208. A bearing cover 204 is fixedly installed on the side wall of the bearing frame cylinder 201 near the top surface. A sealing ring 4 that matches the size of the bearing cover 204 is fixedly installed on the upper side wall inside the water bath 1. A sealing strip 6 is embedded in the upper end of the sealing ring 4. A drain valve pipe 3 is fixedly installed at the bottom of the side wall of the water bath 1. The drain valve pipe 3 is connected to the inside of the water bath 1. When the water bath is not in use, the water in the water bath can be drained through the drain valve pipe 3. At the same time, the amount of water in the water bath can also be controlled by the discharge of the drain valve pipe 3.

[0035] Reference embodiment: A connector 206 is fixedly installed at the bottom of the support frame 201. Two symmetrically distributed springs 207 are fixedly installed inside the connector 206. A sliding plug 208 is fixedly installed at the end of the spring 207 away from the connector 206. The sliding plug 208 and the connector 206 are slidably connected. A plug hole 210 is opened on the top surface of the drive shaft 508. A plug groove 209 matching the top of the sliding plug 208 is opened on the side wall of the plug hole 210. The top of the plug groove 209 is a hemispherical structure. A support cover 204 is provided on the upper part of the water bath tank 1. A sealing ring 4, matching the size of the bearing cover 204, is fixedly installed on the upper side wall of the part. A sealing strip 6 is embedded in the upper end face of the sealing ring 4. A drain valve pipe 3 is fixedly installed at the bottom of the side wall of the water bath 1. The drain valve pipe 3 is connected to the inside of the water bath 1. The bearing frame 201 is inserted into the water bath 1 through the dial 202, so that the plug 206 at the bottom of the bearing frame 201 can be inserted into the plug hole 210 at the top of the drive shaft 508. At the same time, when the plug 206 is inserted, it will squeeze the sliding plug 208, and the sliding plug 208 will compress the spring 207. In this way, the sliding plug 208 can retract into the plug 204. Within 06, when the sliding plug 208 is located at the corresponding position of the plug groove 209, the sliding plug 208 will extend under the action of the spring 207, thereby allowing the sliding plug 208 to be positioned within the plug groove 209. This allows the sliding plug 208 to slide within the plug groove 209, thus providing a certain degree of constraint for the plug 206 inserted into the plug hole 210. During the assembly of the support frame 201, the support cover 204 of the support frame 201 can be placed at the sealing ring 4, thereby providing a support effect for the support frame 201. The weight of the support cover 204 and the support cover 204 can compress the sealing strip 6 on the sealing ring 4, thereby ensuring the sealing of the connection. Good sealing can more effectively maintain the set temperature and reduce temperature fluctuations caused by external environmental interference such as air flow and temperature fluctuations. In addition, it can more effectively retain heat during the heating and temperature adjustment process and reduce energy waste caused by heat loss. The through hole 205 opened on the support frame cylinder 201 can allow water in the water bath 1 to flow into the support frame cylinder 201. This setting can avoid the flow of water during the stirring and water injection in the water bath 1 from affecting the stability of the coalbed methane and shale gas test tubes.

[0036] Working principle: During use, the support frame 201 is inserted into the water bath 1 via the dial 202, allowing the connector 206 at the bottom of the support frame 201 to be inserted into the connector hole 210 at the top of the drive shaft 508. Simultaneously, the insertion of the connector 206 compresses the sliding plug 208, which in turn compresses the spring 207, allowing the sliding plug 208 to retract into the connector 206. When the sliding plug 208 is positioned at the corresponding location in the plug groove 209, it extends under the action of the spring 207, thus allowing the sliding plug 208 to retract. 08 is located within the plug groove 209, allowing the sliding plug 208 to slide within the groove 209. This provides a certain degree of constraint between the sliding plug 208 and the plug groove 209 and the connector 206 inserted into the connector hole 210. During the assembly of the support frame 201, the support cover 204 of the support frame 201 is positioned at the sealing ring 4. Test tubes containing coalbed methane and shale gas are placed and inserted into the test tube assembly slot 203. The temperature inside the water bath is adjusted according to the temperature requirements of the coalbed methane and shale gas samples. The internal temperature requirement opens the cold water valve pipe 502 or the hot water valve pipe 503. The valve pipe, through the water injection sleeve 501, the connecting hole 504, and the connecting cavity 505, allows cold or hot water to be injected into the connecting cavity 505. The connecting cavity 505, through its connection with the hollow stirring rod 509, allows water to be injected into the stirring rod 509. Increased water pressure from the external water injection system fills the stirring rod 509. Multiple water injection holes 506 on the stirring rod 509 allow cold or hot water to be injected into various areas of the water bath tank 1. Within the domain, the servo motor 507 is activated, which drives the transmission shaft 508 to rotate. This allows the transmission shaft 508 to rotate the stirring rod 509, thus adjusting the position of multiple water injection holes 506 on the stirring rod 509. This enables multi-position water injection through the water injection holes 506, and the stirring also accelerates the diffusion of water, thereby achieving rapid water temperature regulation. The through holes 205 on the supporting frame cylinder 201 allow water from the water bath 1 to flow into the supporting frame cylinder 201 to perform water bath treatment on the coalbed methane and shale gas in the test tube.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled water bath for field samples of coalbed methane and shale gas, characterized in that, It includes a water bath chamber (1) and a servo motor (507). The water bath chamber (1) is equipped with a temperature control component (5) both inside and outside. The servo motor (507) is fixedly installed at the bottom of the water bath chamber (1). A drive shaft (508) is fixedly connected to the output end of the servo motor (507); A stirring rod (509) is fixedly connected to the output end of the drive shaft (508). The stirring rod (509) has a U-shaped structure and a hollow structure inside. A water injection hole (506) is provided on the side wall of the stirring rod (509) near the middle position of the water bath tank (1). Water injection sleeve (501), the water injection sleeve (501) is rotatably sleeved outside the drive shaft (508); A connecting cavity (505) is formed in the middle of the drive shaft (508). A connecting hole (504) is provided on the outer wall of the drive shaft (508). The connecting hole (504) corresponds to the water injection sleeve. The water injection sleeve (501) is interconnected with the water injection hole (506) through the connecting hole (504), the connecting cavity (505), the stirring rod (509).

2. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 1, characterized in that: A cold water valve pipe (502) is fixedly installed on the front end face of the water injection sleeve (501), and a hot water valve pipe (503) is fixedly installed on the left side wall of the water injection sleeve (501).

3. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 1, characterized in that: The water bath chamber (1) is equipped with a sample tube support assembly (2) both inside and outside. The sample tube support assembly (2) includes a support frame (201) fixedly installed inside the water bath chamber (1).

4. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 3, characterized in that: A dial (202) is fixedly installed at the middle position of the top of the support frame (201). Multiple through holes (205) communicating with the water bath box (1) are opened on the side wall of the support frame (201). Multiple test tube assembly slots (203) are opened on the upper surface of the support frame (201).

5. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 4, characterized in that: A connector (206) is fixedly installed at the bottom of the support frame (201). Two symmetrically distributed springs (207) are fixedly installed inside the connector (206). A sliding plug (208) is fixedly installed at the end of the spring (207) away from the connector (206). The sliding plug (208) and the connector (206) are slidably connected.

6. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 1, characterized in that: The top surface of the drive shaft (508) is provided with a plug hole (210), and the side wall of the plug hole (210) is provided with a plug groove (209) that matches the top of the sliding plug (208). The top of the plug groove (209) is a hemispherical structure.

7. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 1, characterized in that: A support cover (204) is provided on the upper part of the water bath tank (1). A sealing ring (4) matching the size of the support cover (204) is fixedly installed on the upper side wall of the water bath tank (1). A sealing strip (6) is embedded on the upper end face of the sealing ring (4).

8. The temperature-controlled water bath for field samples of coalbed methane and shale gas according to claim 1, characterized in that: A drain valve pipe (3) is fixedly installed at the bottom of the side wall of the water bath tank (1), and the drain valve pipe (3) is connected to the interior of the water bath tank (1).

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