Marine resistor heat dissipation and ventilation device

Abstract

The utility model discloses a marine resistor heat dissipation ventilation device, which relates to the technical field of ship and ocean engineering and comprises an air supply air duct, an air supply fan, a ventilation shaft, an air exhaust air duct and an air exhaust fan, a resistor is arranged in the ventilation shaft, one end of the ventilation shaft is communicated with the air supply air duct, the air supply fan is arranged in the air supply air duct, and the air exhaust fan is arranged in the air exhaust air duct. The other end of the ventilation shaft is communicated with an exhaust air duct, and an exhaust fan is arranged in the exhaust air duct; the air supply air duct, the ventilation shaft and the air exhaust air duct form a heat dissipation channel, and supplied air and exhausted air are concentrated in the heat dissipation channel to dissipate heat of the resistor. According to the utility model, the ventilation shaft is respectively connected with the mechanical air supply air duct and the air exhaust air duct, the resistor is arranged in the ventilation shaft, and the air duct paths of mechanical air supply and air exhaust are concentrated in the ventilation shaft for overflowing, so that the ventilation shaft has the effects of efficiently and forcibly exchanging heat for the resistor, accurately radiating the resistor of radiating equipment according to the ventilation air volume and effectively reducing the ventilation air volume.

Description

Technical Field

[0001] The utility model relates to the technical field of ship and ocean engineering, and more specifically, to a marine resistor heat dissipation and ventilation device. Background Art

[0002] A crane ship equipped with a crane usually has several resistors, which will emit a large amount of heat during operation. The resistor forms mainly include water-cooled resistors and air-cooled resistors. Among them, the air-cooled resistor dissipates heat by air-cooling, which can ensure that the resistor is always within a safe operating temperature range, effectively extend the service life of the resistor and improve work efficiency. In addition, the air-cooling method can also make the radiator smaller in volume, achieving a more compact design effect. The air-cooled resistor is widely used in ships due to its above advantages.

[0003] In the prior art, the air-cooling heat dissipation method adopted for the air-cooled resistor is: arranging the air-cooled resistor in the resistor cabin of the ship, and the cabin is provided with a supply air fan, an exhaust air fan and equipped with ventilation pipes to ventilate the entire resistor cabin.

[0004] However, the existing heat dissipation method has the following deficiencies:

[0005] 1) The resistor dissipates a large amount of heat, and a relatively independent cabin is required for the layout of the resistor cabin;

[0006] 2) The resistor is arranged in the cabin, and the cabin uses mechanical supply air and mechanical exhaust to conduct forced ventilation. However, the cabin space is large, resulting in a large ventilation volume in the resistor cabin, and the ventilation and heat dissipation efficiency is low;

[0007] 3) The mechanical supply air and exhaust air volumes of the resistor cabin are constant and cannot be adjusted according to the change of the resistor heat dissipation amount, which is not energy-saving;

[0008] 4) The temperature of the entire cabin where the resistor is located is usually high, and it is not suitable to arrange other equipment. Content of the Utility Model

[0009] Aiming at this problem in practical applications, the purpose of the utility model is to propose a marine resistor heat dissipation and ventilation device, and the specific scheme is as follows:

[0010] A marine resistor heat dissipation and ventilation device includes a supply air duct, a supply air fan, a ventilation shaft, an exhaust air duct and an exhaust air fan. The resistor is arranged in the ventilation shaft. One end of the ventilation shaft is communicated with the supply air duct, and the supply air fan is arranged in the supply air duct. The other end of the ventilation shaft is communicated with the exhaust air duct, and the exhaust air fan is arranged inside the exhaust air duct;

[0011] The supply air duct, the ventilation shaft and the exhaust air duct form a heat dissipation channel, and the supply air and exhaust air are concentrated in the heat dissipation channel to dissipate heat from the resistor.

[0012] Furthermore, the ventilation shaft is a tunnel structure with both ends open and a through-channel inside.

[0013] Furthermore, at least one side of the ventilation shaft forms a cofferdam structure with the deck surface of the resistor box compartment.

[0014] Furthermore, the air supply duct and the exhaust duct are respectively detachably connected to both ends of the ventilation shaft, and the connection parts are sealed.

[0015] Furthermore, a maintenance cover is detachably installed on one side of the ventilation shaft.

[0016] Furthermore, a temperature sensor is provided inside the ventilation shaft.

[0017] Furthermore, both the air supply fan and the exhaust fan are variable-frequency fans.

[0018] Furthermore, a drain cock is provided at the bottom of the ventilation shaft.

[0019] Furthermore, the ventilation shaft is also equipped with a drying and dehumidifying device;

[0020] Wherein, the drying and dehumidifying device is a space heater installed inside the ventilation shaft; or, the drying and dehumidifying device is a dehumidifier connected to the ventilation shaft.

[0021] Furthermore, the ventilation shaft is made of steel material.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] (1) The present invention provides a marine resistor heat dissipation ventilation device. A ventilation shaft is provided to connect the mechanical air supply duct and the exhaust duct respectively. The resistor is placed inside the ventilation shaft, and the air paths of mechanical air supply and exhaust are concentrated in the ventilation shaft for flow-through, performing efficient forced heat exchange on the resistor. The ventilation air volume precisely cools the heat dissipation device resistor instead of the compartment where the resistor is located, effectively reducing the ventilation air volume.

[0024] (2) Both the mechanical air supply fan and the exhaust fan are variable-frequency fans. A temperature sensor is provided inside the ventilation shaft. By monitoring the temperature inside the ventilation shaft in real time, the air volumes of the variable-frequency air supply fan and the exhaust fan are adjusted in a timely manner. The ventilation volume is adjusted according to the actual heat dissipation amount of the resistor, achieving an energy-saving effect and avoiding waste caused by the constant air volume operation of the fan. A dehumidifier interface and a space heater can also be provided inside the ventilation shaft to dehumidify and heat the ventilation shaft regularly under non-working conditions to keep it dry, which is beneficial to the maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the ventilation layout of the resistor (the compartment where the resistor is located) in the prior art;

[0026] Figure 2 It is a side view of the ventilation layout diagram of the resistor (in the cabin where the resistor is located) in the prior art;

[0027] Figure 3 It is a top view of the marine resistor heat dissipation and ventilation device in the present invention;

[0028] Figure 4 It is a side view of the marine resistor heat dissipation and ventilation device in the present invention;

[0029] Figure 5 It is a schematic structural diagram of three embodiments in the form of a ventilation shaft in the present invention.

[0030] Reference numerals: 1, air supply duct; 2, air supply fan; 3, opening of the air supply duct; 4, air supply duct static pressure box; 5, air supply air duct; 6, ventilation grille; 7, exhaust duct static pressure box; 8, opening of the exhaust duct; 9, exhaust fan; 10, exhaust duct; 11, ventilation shaft; 12, temperature sensor; 13, inspection cover; 14, drain cock. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] First of all, it should be noted that a resistor box cabin is configured in the crane ship, and the resistors are arranged in the resistor box cabin. The resistor box cabin is composed of the main deck, checker plate, cabin bottom and surrounding bulkheads. Among them, the main deck serves as the cabin top of the resistor box cabin, the checker plate serves as the horizontal placement surface inside the cabin, and the cabin bottom is located below the horizontal placement surface inside the cabin.

[0033] Refer to Figure 1-2 , which shows the layout diagram of the resistor ventilation device in the prior art. In the figure, the resistor equipment is marked with "R" and the resistor box cabin is marked with "P". Among them, the resistor equipment is longitudinally distributed in the cabin of the resistor box cabin and is located on the horizontal placement surface inside the cabin.

[0034] Specifically, the existing resistor ventilation device and ventilation method are as follows:

[0035] The ventilation device includes an air supply duct 1, an air supply fan 2, an opening 3 of the air supply duct, an air supply duct static pressure box 4, an air supply air duct 5, a ventilation grille 6, an exhaust duct static pressure box 7, an opening 8 of the exhaust duct, an exhaust fan 9 and an exhaust duct 10.

[0036] Among them, the resistors are arranged on the horizontal placement surface inside the resistor box cabin.

[0037] On one side of the top of the resistor box compartment, there is an air supply duct static pressure box 4. The air supply duct static pressure box 4 is of a square box structure. An air supply duct opening 3 is provided at the top of the air supply duct static pressure box 4. The air supply duct static pressure box 4 is connected to the air supply duct 1 through the air supply duct opening 3. An air supply fan 2 is provided in the air supply duct 1; the bottom of the air supply duct static pressure box 4 is connected to the air supply air duct 5.

[0038] In the space formed by the horizontal placement surface in the resistor box compartment and the bottom of the compartment, there are several ventilation grilles 6. The other end of the air supply air duct 5 away from the air supply duct static pressure box 4 extends from above the resistor to below the resistor and is connected to several ventilation grilles 6.

[0039] An air supply path is formed from the air supply duct 1, the air supply duct static pressure box 4, the air supply air duct 5 to the ventilation grilles 6.

[0040] On the other side of the top of the resistor box compartment, there is an exhaust duct static pressure box 7. The exhaust duct static pressure box 7 is also of a square box structure. An exhaust duct opening 8 is provided at the top of the exhaust duct static pressure box 7. The exhaust duct static pressure box 7 is connected to the exhaust duct 10 through the exhaust duct opening 8. An exhaust fan 9 is provided in the exhaust duct 10; the bottom of the exhaust duct static pressure box 7 is open and connected to the inside of the compartment to serve as an exhaust inlet.

[0041] An exhaust path is formed from the inside of the resistor box compartment, the exhaust duct static pressure box 7, and the exhaust duct 10.

[0042] The ventilation method is as follows: The "fresh air" (low temperature) outside the resistor box compartment is sent into the resistor compartment by the air supply fan 2, blown out from near the resistor compartment, ventilates the resistor and then becomes "hot air". This "hot air" is exhausted to the outside of the compartment by the mechanical exhaust fan 9. Through forced mechanical air supply and mechanical exhaust, heat exchange for resistor heat dissipation is carried out to ensure the normal operation of the resistor.

[0043] In the existing resistor ventilation device and ventilation method, what is achieved is that mechanical air supply is released inside the resistor box compartment, providing ventilation volume for resistor heat dissipation and exhausting it to the outside of the compartment through the exhaust duct 10. Since the method of releasing inside the compartment for resistor heat dissipation is adopted, there is a problem of low heat dissipation efficiency.

[0044] Based on this, this embodiment provides a marine resistor heat dissipation ventilation device, which improves the existing resistor ventilation and heat dissipation method.

[0045] Refer to Figure 3-4, A marine resistor heat dissipation and ventilation device, including a supply air duct 1, a supply air fan 2, a ventilation shaft 11, an exhaust air duct 10, and an exhaust air fan 9. The ventilation shaft 11 is arranged inside the resistor box compartment, and the resistor is arranged inside the ventilation shaft 11. One end of the ventilation shaft 11 is connected to the supply air duct 1, and the supply air duct 1 is installed on one side of the top of the resistor box compartment. The supply air duct 1 is provided with a supply air fan 2. The other end of the ventilation shaft 11 is connected to the exhaust air duct 10, and the exhaust air duct 10 is installed on the other side of the top of the resistor box compartment. The exhaust air duct 10 is internally provided with an exhaust air fan 9.

[0046] A supply air path is formed from the supply air duct 1 to the ventilation shaft 11, and an exhaust air path is formed from the ventilation shaft 11 to the exhaust air duct 10. The supply air duct 1, the ventilation shaft 11, and the exhaust air duct 10 are interconnected to form a heat dissipation channel. The resistor is placed in the ventilation shaft 11 part of the heat dissipation channel, and the supply air and exhaust air are concentrated in the heat dissipation channel to dissipate heat from the resistor.

[0047] In the marine resistor heat dissipation and ventilation device of this embodiment, the air paths of mechanical supply air and exhaust air are concentrated in the ventilation shaft 11 for flow-through, which can perform efficient forced heat exchange on the resistor. The ventilation air volume accurately dissipates heat from the heat dissipation equipment resistor. Compared with the existing ventilation method for dissipating heat from the compartment where the resistor is located, it can effectively reduce the ventilation air volume and improve the ventilation and heat dissipation efficiency.

[0048] More specifically, the ventilation shaft 11 is made of steel material.

[0049] The ventilation shaft 11 is a tunnel structure with both ends open and a through channel inside. As Figure 4 shown, the ventilation shaft 11 is composed of a horizontal part, a supply air part connected to both ends of the horizontal part, and an exhaust air part (not shown in the figure). Among them, the horizontal part is horizontally arranged along the horizontal placement surface inside the resistor box compartment, the resistor is arranged in the horizontal part, the supply air part and the exhaust air part are preferably arranged perpendicular to the horizontal part, the supply air part is connected to the supply air duct 1, and the exhaust air part is connected to the exhaust air duct 10.

[0050] Preferably, in one embodiment, the ventilation shaft 11 adopts an integral tunnel structure for easy integral installation. In another embodiment, the three parts of the ventilation shaft 11 are detachably connected to each other, and specifically, connection methods such as bolt connection and clamping can be used for connection. The detachable structure facilitates the disassembly, assembly, and transportation of the ventilation shaft 11.

[0051] In addition, the structural form of the ventilation shaft 11 is: the ventilation shaft 11 has at least one side forming a surrounding wall structure with the surface of the resistor box compartment. Specifically, as Figure 5 shown, Figure 5 Three embodiments of the form of the ventilation shaft 11 are shown. From left to right in the figure, it shows that the ventilation shaft 11 has one side forming a surrounding wall structure with the compartment surface, the ventilation shaft 11 has three sides forming a surrounding wall structure with the compartment surface, and the ventilation shaft 11 has three sides forming a surrounding wall structure with the compartment surface.

[0052] In the first embodiment, one side of the ventilation shaft 11 forms a bulkhead structure with the deck surface. At this time, the cross-section of the ventilation shaft 11 is an arc-shaped structure, and this arc-shaped structure cooperates with the bulkhead of the resistor box compartment and the horizontal placement surface inside the compartment to form a tunnel structure.

[0053] In the second embodiment, two sides of the ventilation shaft 11 form a bulkhead structure with the deck surface. At this time, the cross-section of the ventilation shaft 11 is an L-shaped structure, and this L-shaped structure cooperates with the bulkhead of the resistor box compartment and the horizontal placement surface inside the compartment to form a tunnel structure.

[0054] In the third embodiment, two sides of the ventilation shaft 11 form a bulkhead structure with the deck surface. At this time, the cross-section of the ventilation shaft 11 is a U-shaped structure, and this U-shaped structure cooperates with the bulkhead of the resistor box compartment and the horizontal placement surface inside the compartment to form a tunnel structure.

[0055] In addition, it should be noted that the structural form of the ventilation shaft 11 is not limited to the three embodiments described above, and the form of the ventilation shaft 11 can also be adjusted according to the actual situation. For example, the ventilation shaft 11 can also be set as a tunnel structure with a semi-circular arc cross-section. The ventilation shaft 11 only has an open end at the bottom, and this bottom open end cooperates with the horizontal placement surface inside the compartment to form a tunnel structure.

[0056] Furthermore, the air supply duct 1 and the exhaust duct 10 are respectively detachably connected to both ends of the ventilation shaft 11. Specifically, the flange bolt connection method can be adopted, and seals are provided at the connection between the air supply duct 1 and the ventilation shaft 11 and at the connection between the exhaust duct 10 and the ventilation shaft 11. For example, a sealing ring can be connected between the flanges at the connection, so as to avoid air leakage in the air supply path and the exhaust path, and ensure centralized ventilation.

[0057] Both the air supply fan 2 and the exhaust fan 9 are variable-frequency fans. A temperature sensor 12 is provided inside the ventilation shaft 11. The function of the temperature sensor 12 is to detect the temperature change inside the ventilation shaft 11, monitor the temperature change inside the ventilation shaft 11, and output signals for monitoring. And the device also includes a controller (not shown in the figure), such as a PLC controller. The PLC controller is electrically connected to the temperature sensor 12 and is also electrically connected to the air supply fan 2 and the exhaust fan 9. By the real-time monitoring of the temperature change by the temperature sensor 12, the heat dissipation change of the resistor is sensed, and the temperature change is transmitted to the PLC controller. The PLC controller adjusts the air volume change of the variable-frequency air supply fan 2 and the variable-frequency exhaust fan 9 according to the received temperature change, realizes the adjustment of the ventilation volume according to the heat dissipation change of the resistor, adjusts the reasonable rotation speed, realizes the matching of the heat dissipation and the actual ventilation volume, and achieves the energy-saving effect. In addition, it should be noted that the temperature sensor 12 and the PLC controller are both prior arts, and this application does not involve improvements to them, so their principles will not be elaborated here.

[0058] A maintenance cover 13 is detachably installed on one side surface of the ventilation shaft 11. In a possible embodiment, the maintenance cover 13 and the ventilation shaft 11 are connected by bolts. The function of the maintenance cover 13 is for the initial installation of the equipment and future maintenance use.

[0059] A drain cock 14 is provided at the bottom of the ventilation shaft 11. The function of the drain cock 14 is to drain the condensed water in the ventilation shaft 11.

[0060] The ventilation shaft 11 also has a drying and dehumidifying device (not shown in the figure); among them, the drying and dehumidifying device is a space heater installed in the space of the ventilation shaft 11; or, the drying and dehumidifying device is a dehumidifier connected to the ventilation shaft 11. The purpose of setting the space heater and the dehumidifier is to dehumidify and heat the inside of the ventilation shaft 11 during the long-term non-use of the resistor, and maintain a dry space environment, so as to facilitate the maintenance and protection of the resistor equipment. Similarly, the space heater and the dehumidifier are both applied to this application as prior art and will not be elaborated here.

[0061] The specific implementation principle of the present utility model is as follows: When ventilating and dissipating heat, the air supply fan 2 works, sends the "fresh air" outside the resistor box cabin into the air supply air duct 1, and then enters one end of the ventilation shaft 11 to ventilate and dissipate heat from the resistor arranged in the ventilation shaft 11. After ventilating the resistor, it becomes "hot air", and this "hot air" is discharged from the other end of the ventilation shaft 11 to the exhaust air duct 10 and is discharged from the resistor cabin under the action of the exhaust fan 9, so as to achieve the concentrated overcurrent of the resistor in the ventilation shaft 11 and achieve efficient forced heat dissipation.

[0062] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions within the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A marine resistor heat dissipation and ventilation device, characterized in that, It includes a blast air duct (1), a blast air blower (2), a ventilation shaft (11), an exhaust air duct (10) and an exhaust air blower (9). The resistor is arranged in the ventilation shaft (11). One end of the ventilation shaft (11) is connected to the blast air duct (1), and the blast air blower (2) is arranged in the blast air duct (1). The other end of the ventilation shaft (11) is connected to the exhaust air duct (10), and the exhaust air blower (9) is arranged inside the exhaust air duct (10). The blast air duct (1), the ventilation shaft (11) and the exhaust air duct (10) form a heat dissipation channel, and the blast air and the exhaust air are concentrated in the heat dissipation channel to dissipate heat from the resistor.

2. The marine resistor heat dissipation and ventilation device according to claim 1, wherein The ventilation shaft (11) is a tunnel structure with both ends open and a through channel inside.

3. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, At least one side of the ventilation shaft (11) forms a bulkhead structure with the surface of the resistor box compartment.

4. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, The blast air duct (1) and the exhaust air duct (10) are respectively detachably connected to both ends of the ventilation shaft (11), and the connection parts are sealed.

5. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, An inspection cover (13) is detachably installed on one side of the ventilation shaft (11).

6. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, A temperature sensor (12) is arranged in the ventilation shaft (11).

7. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, Both the blast air blower (2) and the exhaust air blower (9) are variable frequency blowers.

8. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, A drain cock (14) is arranged at the bottom of the ventilation shaft (11).

9. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, The ventilation shaft (11) also has a drying and dehumidifying device; Among them, the drying and dehumidifying device is a space heater installed in the ventilation shaft (11); or the drying and dehumidifying device is a dehumidifier connected to the ventilation shaft (11).

10. The marine resistor heat dissipation and ventilation device according to claim 1, characterized in that, The ventilation shaft (11) is made of steel material.

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