A method for treating calcium chloride crystals in a freezer

Abstract

This invention discloses a method for treating calcium chloride crystals inside a freezer. The method is characterized by the following steps: when calcium chloride crystals severely clog the pores inside the freezer, preventing brine self-circulation, the supply pipe is disconnected, and a bypass supply pipe is installed to form an independent circulation outside the freezer. Low-concentration brine is used to flush the pores, dissolving the crystallized calcium chloride. After the pore blockage is resolved, normal brine circulation in the freezer is restored. The bypass supply pipe must overcome the buoyancy of the high-concentration brine inside the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride to the bottom of the freezer. This invention overcomes the buoyancy of the high-concentration brine inside the freezer, efficiently solves the problem of calcium chloride crystal blockage, and achieves a one-step solution for treating severe calcium chloride crystal blockage and restoring normal brine circulation in the freezer, effectively reducing the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to a method for processing calcium chloride crystals in a freezer, belonging to the technical field of drilling tools. Background Art

[0002] Freezing construction method is to use artificial refrigeration to arrange freezers around the underground excavation body, and circulate low-temperature cooling medium (commonly used calcium chloride solution, commonly known as brine) to exchange heat with the stratum, freeze the water in the stratum, and freeze the water-containing, loose and unstable stratum into a temporary closed frozen soil wall with a certain strength and stability to isolate groundwater and resist ground pressure. It is a construction method for excavation and masonry of underground engineering under the protection of the closed frozen soil wall.

[0003] In this construction method, calcium chloride crystals are precipitated due to reasons such as high salt water concentration, uneven preparation and dissolution, and long-term non-circulation, thereby blocking the freezer and causing a hole plugging accident. For minor crystal precipitation, the salt water system can be used to slowly dissolve it through positive and reverse self-circulation, but for serious hole plugging, it is difficult to clear and dissolve it using the salt water system.

[0004] When calcium chloride crystals in the freezer block the holes severely and the brine cannot circulate by itself, a new technical solution is needed to solve this problem. Summary of the invention

[0005] The invention solves the technical problems in the prior art and proposes a method for processing calcium chloride crystals in a freezer.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: a method for processing calcium chloride crystals in a freezer. When the calcium chloride crystals in the freezer seriously block the holes and the brine cannot circulate by itself, the liquid supply pipe is pulled out, and a bypass liquid supply pipe is installed to form an independent circulation outside the freezer. Low-concentration brine is used for punching treatment to dissolve the crystallized calcium chloride, and the normal brine circulation of the freezer is restored after the blocking treatment is completed. The bypass liquid supply pipe needs to overcome the buoyancy of the high-concentration brine in the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer.

[0007] Furthermore, the bypass liquid supply pipe is composed of multiple sections of counterweights, and the hollow tubes of each section of the counterweights are connected through flexible connections, so that the counterweights can overcome the buoyancy of the high-concentration brine in the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, thereby achieving a one-step solution to the serious blockage of calcium chloride crystals in the freezer and restoring normal brine circulation in the freezer.

[0008] Furthermore, the bypass liquid supply pipe includes a number of counterweight sub-sections connected in series, a counterweight head section installed at the head of the counterweight sub-section, the counterweight sub-section is composed of an outer hollow protective tube, an inner hollow liquid guiding tube, and a fish scale bamboo section welded together, and the counterweight head section is composed of a head section outer hollow protective tube, a head section inner hollow liquid guiding tube, a fish scale bamboo section, a head section cap, and a support rod, wherein liquid holes / grooves are opened on the tube wall at the same position of the hollow protective tube outside the head section and the hollow liquid guiding tube inside the head section, the head section cap is installed at the end of the hollow protective tube outside the head section, a through hole is opened at the top of the arc of the head section cap to the other end, and one end of the support rod is installed on the head section cap.

[0009] Furthermore, the series connection of the counterweight sub-sections means that two adjacent counterweight sub-sections are connected by a hose inserted into the fish scale bamboo section, and the outer hollow protective tube wall is welded with a metal plate to reinforce the connection.

[0010] Furthermore, the diameter of the through hole of the head segment cap is equal to the inner diameter of the inner hollow liquid guiding tube, and the support rod is U-shaped, with both ends of the opening inserted into the through hole of the head segment cap and welded.

[0011] Furthermore, the support rod has a rod diameter of not less than 10 mm, and the length of the exposed portion after welding is 0.45 to 0.55 m.

[0012] Furthermore, the inner hollow liquid guiding tube is coaxially welded with the outer hollow protective tube.

[0013] The beneficial technical effect of the present invention is as follows: by counterweighting the hollow steel pipe of the bypass liquid supply pipe and softly connecting the middle of the multiple hollow counterweights, the head structure effectively prevents the freezing pipe from being scratched during the lowering process, overcomes the buoyancy of the high-concentration brine in the freezer, and ensures that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, effectively solving the problem of calcium chloride crystallization blocking the hole, realizing the one-step treatment of the serious blockage of the calcium chloride crystallization in the freezer and restoring the normal brine circulation of the freezer, and effectively reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] In the figure: 1. outer hollow protective tube, 2. inner hollow liquid guiding tube, 3. head section cap, 4. support rod, 5. fish scale bamboo section, 6. hose, 7. metal plate, 8. liquid outlet trough, 9. counterweight sub-section, 10. counterweight head section, 11. outer hollow protective tube of the head section, 12. inner hollow liquid guiding tube of the head section. DETAILED DESCRIPTION

[0017] A method for treating calcium chloride crystals in a freezer. When calcium chloride crystals in the freezer seriously block holes and brine cannot circulate by itself, a liquid supply pipe is pulled out and a bypass liquid supply pipe is installed to form an independent circulation outside the freezer. Low-concentration brine is used for punching holes to dissolve the crystallized calcium chloride. After the blocking hole treatment is completed, the normal brine circulation of the freezer is restored. The bypass liquid supply pipe needs to overcome the buoyancy of the high-concentration brine in the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer. The bypass liquid supply pipe is composed of multiple sections of counterweights, and the hollow tubes of each section of the counterweight are connected through a soft connection. The counterweight overcomes the buoyancy of the high-concentration brine in the freezer and ensures that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, so that the serious blocking hole treatment of calcium chloride crystals in the freezer and the restoration of normal brine circulation in the freezer are achieved in one step.

[0018] When the calcium chloride crystals in the freezer block the holes seriously, the brine cannot circulate by itself, and the only option is to pull out the liquid supply pipe and place another pipe to form an independent circulation system outside the freezer. Use low-concentration brine to punch holes, slowly dissolve the crystallized calcium chloride, and restore the normal brine circulation of the freezer after the blocking treatment is completed. In addition, the pipe must overcome the buoyancy of the high-concentration brine in the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, thereby improving the punching efficiency.

[0019] The present invention uses a hollow steel pipe counterweight for bypass liquid supply pipe, and multiple hollow counterweights are softly connected in the middle. The head structure effectively prevents the freezing pipe from being scratched during the pipe lowering process, overcomes the buoyancy of high-concentration brine in the freezer, and ensures that low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, effectively solves the problem of calcium chloride crystallization blocking the hole, realizes the one-step treatment of serious calcium chloride crystallization blocking the hole in the freezer and restores the normal brine circulation of the freezer, and effectively reduces the labor intensity of workers.

[0020] like Figure 1 As shown, a bypass liquid supply pipe structure for processing calcium chloride crystals in a freezer includes a plurality of counterweight sub-sections 9 connected in series, a counterweight head section 10 installed at the head of the counterweight sub-section 9, the counterweight sub-section 9 is welded by an outer hollow protective tube 1, an inner hollow liquid guiding tube 2, and a fish scale bamboo section 5, the counterweight head section 10 is composed of a head section outer hollow protective tube 11, a head section inner hollow liquid guiding tube 12, a fish scale bamboo section 5, a head section cap 3, and a support rod 4, wherein a liquid groove 8 is opened on the tube wall at the same position of the head section outer hollow protective tube 11 and the head section inner hollow liquid guiding tube 12, the head section cap 3 is installed at the end of the head section outer hollow protective tube 11, a through hole is opened at the top of the arc of the head section cap 3 to the other end, and one end of the support rod 4 is installed on the head section cap 3.

[0021] The series connection of the counterweight sub-sections 9 means that two adjacent counterweight sub-sections are connected by a hose 6 inserted into the fish scale bamboo section 5, and the metal plate 7 is welded to the wall of the outer hollow protective tube 1 to reinforce the connection.

[0022] The diameter of the through hole of the head section cap 3 is equal to the inner diameter of the inner hollow liquid guiding tube. The support rod 4 is U-shaped, and the two ends of the opening are inserted into the through hole of the head section cap 3 and welded.

[0023] The support rod 4 has a rod diameter of not less than 10 mm, and the length of the exposed portion after welding is about 0.5 m.

[0024] The inner hollow liquid guiding tube 2 and the outer hollow protective tube 1 are coaxially welded and installed.

[0025] The above description is only an implementation case of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A method for treating calcium chloride crystals in a freezer, characterized in that: When calcium chloride crystals in the freezer seriously block the holes and the brine cannot circulate by itself, the liquid supply pipe is pulled out and a bypass liquid supply pipe is installed to form an independent circulation outside the freezer. The holes are punched with low-concentration brine to dissolve the crystallized calcium chloride, and the normal brine circulation of the freezer is restored after the blocking treatment is completed. The bypass liquid supply pipe needs to overcome the buoyancy of the high-concentration brine in the freezer and ensure that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer. The bypass liquid supply pipe is composed of multiple sections of counterweights, and the hollow tubes of each section of the counterweight are connected by soft connections. The counterweight overcomes the buoyancy of the high-concentration brine in the freezer and ensures that the low-concentration brine can directly flush the crystallized calcium chloride at the bottom of the freezer, thereby achieving the serious blockage treatment of calcium chloride crystals in the freezer and restoring the normal brine circulation of the freezer. The ring is in place in one step, the bypass liquid supply pipe includes a number of counterweight sub-sections connected in series, a counterweight head section installed at the head of the counterweight sub-section, the counterweight sub-section is composed of an outer hollow protective tube, an inner hollow liquid guide tube, and a fish scale bamboo section welded together, the counterweight head section is composed of a head section outer hollow protective tube, a head section inner hollow liquid guide tube, a fish scale bamboo section, a head section cap, and a support rod, wherein liquid holes / grooves are opened on the wall of the same position of the hollow protective tube outside the head section and the hollow liquid guide tube inside the head section, the head section cap is installed at the end of the outer hollow protective tube of the head section, a through hole is opened at the top of the arc of the head section cap to the other end, and one end of the support rod is installed on the head section cap, the series connection of the counterweight sub-sections means that two adjacent counterweight sub-sections are connected by a hose inserted into the fish scale bamboo section, and the outer hollow protective tube wall is welded with a metal plate for reinforcement.

2. The method for processing calcium chloride crystals in a freezer according to claim 1, wherein: The diameter of the through hole of the head section cap is equal to the inner diameter of the inner hollow liquid guiding tube, the support rod is U-shaped, and the two ends of the opening are inserted into the through hole of the head section cap for welding.

3. The method for processing calcium chloride crystals in a freezer according to claim 1, wherein: The support rod has a diameter of not less than 10 mm, and the length of the exposed portion after welding is 0.45 to 0.55 m.

4. The method for processing calcium chloride crystals in a freezer according to claim 1, wherein: The inner hollow liquid guiding tube is coaxially welded with the outer hollow protective tube.

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