A calcium carbide liquid circulation cooling device and method that is not prone to scaling

Abstract

The present invention relates to a calcium carbide liquid circulation cooling device which is not easy to scale, and belongs to the technical field of circulation cooling. The device comprises a calcium carbide liquid buffer tank, a cooling box, and a cooling fan device from bottom to top. The calcium carbide liquid buffer tank is connected to the cooling box through a water outlet pipe, and the cooling fan device is connected to the cooling box through a top platform of the cooling box. The interior of the cooling box comprises a water inlet pipe, a water distribution pipe, a cooling nozzle above the water distribution pipe, and a top platform on the top of the cooling box. The cooling nozzle comprises a straight pipe section, a flow stabilizer, and a baffle from bottom to top. A sealless self-priming water pump is arranged on the water outlet pipe, comprising a motor, a pump body, an outlet check valve, and an outlet diaphragm valve. The flow rate of the calcium carbide liquid at the water distribution pipe and the cooling nozzle is 1.4 to 1.6 m / s. The wind speed of the fan blade is 4 to 6 m / s. The descaling cycle is extended from one month to more than two years.

Description

Technical Field

[0001] The invention belongs to the technical field of circulating cooling, and in particular relates to a calcium carbide liquid circulating cooling system which is not prone to scaling and a working method thereof. Background Art

[0002] In the traditional calcium carbide liquid circulating cooling system, the cooling towers used are mostly unfilled spray cooling towers. During operation, the calcium carbide liquid is very easy to scale at the atomizing nozzle, conveying pipes and water collectors, causing blockage of the atomizing nozzle, conveying pipes and water collectors, and failing to achieve the ideal atomizing cooling effect. In addition, the cooling water volume and cooling air volume are greatly reduced, and water drift is serious, causing pollution and corrosion to the surrounding working environment and equipment. The atomizing nozzles and conveying pipes need to be disassembled every month for acid washing and descaling, which has a serious impact on production safety. This is a common problem in the calcium carbide acetylene industry. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, one object of the present invention is to provide a calcium carbide liquid circulating cooling system which is not easy to scale.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A calcium carbide liquid circulation cooling device that is not prone to scaling comprises a calcium carbide liquid buffer tank, a cooling box, and a cooling fan device from bottom to top. The calcium carbide liquid buffer tank is connected to the cooling box body through an outlet pipe. The interior of the cooling box comprises a water inlet pipe at the bottom of the cooling box, a water distribution pipe, a cooling nozzle above the water distribution pipe, and a top platform on the top of the cooling box. The water distribution pipe is connected to the water inlet pipe, and the water inlet pipe is connected to the water outlet pipe outside the cooling box. The cooling fan device is connected to the cooling box through the top platform of the cooling box. The cooling nozzle is located above the water distribution pipe. The cooling nozzle comprises a straight pipe section, a flow stabilizer, and a baffle from bottom to top. A sealless self-priming water pump is arranged on the outlet pipe.

[0006] The present application has no large-wave and large-curved water collector and no filler. Instead, the cooling nozzles arranged at a certain interval inside the cooling box are used in conjunction with a certain air volume of the cooling fan device to cool the calcium carbide liquid. The cooling process is simple and easy to carry out. It can not only effectively cool the calcium carbide liquid, but also greatly extend the descaling cycle and greatly reduce the water drift rate. The cooling nozzle of the present application is different from the structure of the traditional atomizing nozzle, and the water flow rate is increased. When the pipeline diameter remains basically unchanged, the descaling cycle can be effectively extended.

[0007] Preferably, the water distribution pipeline is composed of a number of branch pipelines arranged at equal intervals, and the water inlet pipeline is respectively connected to the number of branch pipelines arranged at equal intervals.

[0008] Preferably, the cooling nozzles are arranged at equal intervals on the water distribution pipe.

[0009] Preferably, the cooling nozzle is vertically arranged, and the nozzle sprays water upward in the shape of a circular ring.

[0010] Further preferably, the distance between adjacent cooling nozzles is 800-1000 mm.

[0011] The distance between the nozzles can enable the edges of water sprayed from adjacent nozzles to intersect or be tangent to each other to a certain extent.

[0012] Preferably, the cooling fan device includes a hyperbolic wind tube, and a first motor and fan blades connected from bottom to top inside the hyperbolic wind tube, and the motor is fixedly connected to the top platform.

[0013] Further preferably, the fan blades are fiberglass blades, and the diameter of the fan blades is slightly smaller than the width of the wind tube in the horizontal plane of the fan blades.

[0014] The hyperbolic air duct has a hyperbolic shape, which creates good aerodynamic conditions, reduces ventilation resistance and the backflow of humid air, and discharges humid air.

[0015] Further preferably, the vertical distance between the cooling nozzle and the fan blade is 3000-4000mm.

[0016] Preferably, the sealless self-priming water pump comprises a second motor, a pump body, an outlet check valve and an outlet diaphragm valve.

[0017] The outlet-mounted diaphragm valve helps to remove internal scale during the switching process, effectively extending the descaling cycle.

[0018] The second object of the present invention is to provide a method for circulating cooling of calcium carbide clear liquid using the above-mentioned calcium carbide clear liquid circulating cooling device which is not easy to scale, and the specific steps are as follows:

[0019] 1) Turn on the sealless self-priming pump, set the lift and flow rate of the sealless self-priming pump, and control the flow rate of calcium carbide clear liquid at the water distribution pipeline and cooling nozzle;

[0020] 2) Turn on the cooling fan device and set the wind speed of the fan blades.

[0021] Preferably, the flow rate of the calcium carbide clear liquid in the water distribution pipeline and the cooling nozzle in step 1) is 1.4 to 1.6 m / s.

[0022] Preferably, the wind speed of the fan blades in step 2) is 4 to 6 m / s.

[0023] Beneficial effects of the present invention:

[0024] 1) The calcium carbide liquid circulation cooling device of the present invention is provided with cooling nozzles, which spray water at a certain flow rate, flow velocity and form, and are arranged in a cooling box according to certain specifications, so that the nozzles and pipelines of the calcium carbide liquid circulation cooling device are not easy to scale while ensuring the cooling effect, and the descaling cycle is extended from one month to more than two years;

[0025] 2) The water spraying mode of the cooling nozzle of the calcium carbide liquid circulating cooling device of the present invention greatly reduces the water drift rate, which is much lower than that of the ordinary calcium carbide liquid filler-free spray circulating cooling device, and can avoid pollution and corrosion to the surrounding environment and equipment;

[0026] 3) The diaphragm valve installed at the outlet of the sealless self-priming water pump of the present invention helps to remove internal scale during the switching process, effectively extending the descaling cycle;

[0027] 4) The circulating water pump of the present invention adopts a vertical seal-free self-priming water pump, and the seal impeller can be easily descaled through the overflow port at the seal impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0029] Figure 1 It is a structural front view of the calcium carbide liquid circulation cooling device of the present invention;

[0030] Figure 2 It is a top view of the structure of the calcium carbide clear liquid circulation cooling device of the present invention;

[0031] in,

[0032] 1. Hyperbolic air duct, 2. Glass fiber reinforced plastic fan blades, 3. First motor, 4. Top platform, 5. Cooling box, 6. Annular water spray, 7. Straight pipe section, 8. Flow stabilizer, 9. Baffle, 10. First water outlet pipe, 11. Water inlet pipe, 12. Second motor, 13. Pump body, 14. Outlet diaphragm valve, 15. Outlet check valve, 16. Second water outlet pipe, 17. Calcium carbide liquid, 18. Calcium carbide liquid buffer tank, 19. Water distribution pipe. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] The present invention is further described below in conjunction with embodiments

[0036] Example 1

[0037] A calcium carbide liquid circulation cooling device that is not prone to scaling, comprising a calcium carbide liquid buffer tank 18, a cooling box 5, and a cooling fan device from bottom to top, the calcium carbide liquid buffer tank 18 is connected to the cooling box 5 through a water outlet pipe, the cooling box body 5 includes a water inlet pipe 11, a water distribution pipe 19, a cooling nozzle above the water distribution pipe 19 and a top platform 4 on the top of the cooling box, the water distribution pipe 19 is connected to the water inlet pipe 11, the water inlet pipe 11 is connected to the water outlet pipe outside the cooling box 5, the cooling fan device is connected to the cooling box 5 through the top platform 4, the cooling nozzle is located above the water distribution pipe 19, the cooling nozzle includes a straight pipe section 7, a flow stabilizer 8 and a baffle 9 from bottom to top, and a sealless self-priming water pump is arranged on the water outlet pipe.

[0038] Preferably, the water distribution pipe 19 is composed of a number of branch pipes arranged at equal intervals, and the water inlet pipe 11 is respectively connected to the branch pipes arranged at equal intervals.

[0039] Preferably, the cooling nozzles are arranged at equal intervals on the water distribution pipe 19 .

[0040] Preferably, the cooling nozzle is vertically arranged, and the nozzle sprays water upward in the shape of a circular ring.

[0041] Further preferably, the water distribution pipe 19 includes a connecting flange, an elbow and a pipe.

[0042] The connection is made by welding or flange connection to facilitate disassembly and removal of internal scale.

[0043] Further preferably, the distance between the cooling nozzles is 800-1000 mm.

[0044] Preferably, the cooling fan device includes a hyperbolic air duct 1 , and a first motor 3 and a fiberglass reinforced plastic fan blade 2 connected from bottom to top inside the hyperbolic air duct 1 , and the first motor 3 is fixedly connected to the top platform 4 .

[0045] Further preferably, the hyperbolic air duct 1 is connected to the top platform 4 of the cooling box body by bolts, the first motor 3 and the fiberglass reinforced plastic fan blades 2 are assembled by bolt connection, and then connected to the steel structure frame of the top platform 4 by bolts.

[0046] Further preferably, the distance between the top of the cooling nozzle and the FRP fan blade 2 is 3-4m.

[0047] Further preferably, the sealless self-priming water pump comprises a second motor 12, a pump body 13, an outlet check valve 15 and an outlet diaphragm valve 14, and both ends of the sealless self-priming water pump are connected to the second water outlet pipe 16 and the first water outlet pipe 10 respectively.

[0048] The second water outlet pipe 16 is connected to the calcium carbide clean liquid buffer tank 18 , and the first water outlet pipe 10 is connected to the water inlet pipe of the cooling box 5 .

[0049] Preferably, the top platform 4 is composed of spliced ​​steel plates.

[0050] Example 2

[0051] The distance between the top of the cooling nozzle of the calcium carbide clear liquid circulating cooling device which is not easy to scale and the glass fiber reinforced plastic fan blade 2 is 3000mm.

[0052] The method for circulating cooling of calcium carbide clear liquid has the following specific steps:

[0053] 1) Adjust the head and flow rate of the sealless self-priming pump, and control the flow rate of calcium carbide liquid at the water distribution pipeline and cooling nozzle to 1.4m / s;

[0054] 2) According to the flow rate of calcium carbide liquid in the water distribution pipeline and cooling nozzle in step 1) and the distance between the nozzle and the fan blade, adjust the wind speed of the fan blade to 4m / s.

[0055] The designed water outlet temperature can be reached.

[0056] Example 3

[0057] The distance between the top of the cooling nozzle of the calcium carbide clear liquid circulating cooling device which is not easy to scale and the glass fiber reinforced plastic blade 2 is 4000mm.

[0058] The method for circulating cooling of calcium carbide clear liquid has the following specific steps:

[0059] 1) Adjust the head and flow rate of the sealless self-priming pump, and control the flow rate of calcium carbide liquid at the water distribution pipeline and cooling nozzle to 1.6m / s;

[0060] 2) According to the flow rate of calcium carbide liquid in the water distribution pipeline and cooling nozzle in step 1) and the distance between the nozzle and the fan blade, adjust the wind speed of the fan blade to 6m / s.

[0061] The designed water outlet temperature can be reached.

[0062] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for circulating cooling of calcium carbide liquid using a circulating cooling device, characterized in that: The specific steps are: 1) Turn on the sealless self-priming pump, set the lift and flow rate of the sealless self-priming pump, and control the flow rate of calcium carbide liquid at the water distribution pipeline and cooling nozzle; 2) Turn on the cooling fan device and set the wind speed of the fan blades; The flow rate of calcium carbide liquid in the water distribution pipeline and the cooling nozzle in step 1) is 1.4-1.6 m / s; the wind speed of the fan blade in step 2) is 4-6 m / s; The circulating cooling device comprises, from bottom to top, a calcium carbide clear liquid buffer tank, a cooling box, and a cooling fan device. The calcium carbide clear liquid buffer tank is connected to the cooling box body through a water outlet pipe. The interior of the cooling box comprises a water inlet pipe at the bottom of the cooling box, a water distribution pipe, a cooling nozzle above the water distribution pipe, and a top platform on the top of the cooling box. The water distribution pipe is connected to the water inlet pipe, and the water inlet pipe is connected to the water outlet pipe outside the cooling box. The cooling fan device is connected to the cooling box through the top platform of the cooling box. The cooling nozzle is located above the water distribution pipe. The cooling nozzle comprises, from bottom to top, a straight pipe section, a flow stabilizer, and a baffle. A sealless self-priming water pump is arranged on the water outlet pipe. The water distribution pipeline is composed of a number of branch pipelines arranged at equal intervals, and the water inlet pipeline is respectively connected to the branch pipelines arranged at equal intervals; The cooling nozzles are arranged at equal intervals on the water distribution pipe; The cooling nozzle is vertically arranged, and the nozzle sprays water upward in the shape of a circular ring; The sealless self-priming water pump comprises a second motor, a pump body, an outlet check valve and an outlet diaphragm valve; The distance between the cooling nozzles is 800-1000mm; The cooling fan device includes a hyperbolic wind tube, and a first motor and a fan blade connected from bottom to top inside the curved wind tube, wherein the first motor is fixedly connected to the top platform; the fan blade is a glass fiber reinforced plastic blade, and the diameter of the fan blade is slightly smaller than the width of the wind tube at the horizontal plane of the fan blade; The vertical distance between the cooling nozzle and the fan blade is 3000-4000mm.

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