CN219506215U

CN219506215U - Ventilation switching device

Info

Publication number: CN219506215U
Application number: CN202320049385.5U
Authority: CN
Inventors: 王瀚
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-08-11
Anticipated expiration: 2033-01-09

Abstract

The utility model provides a ventilation switching device which comprises an air duct, wherein the air duct is in a horn shape, the large-diameter end of the air duct is connected with a filling station interface of an LNG ship, the small-diameter end of the air duct is used for sleeving a ventilation pipe of a dehumidification air cooler of a shipyard, the periphery side of the air duct is provided with a limiting bulge, two sides of the limiting bulge are respectively provided with a first part with larger size of the air duct and a second part with smaller size, and the pipe orifice of the ventilation pipe is fastened on the first part. Compared with the prior art, the utility model can ensure that the filling station interface of the LNG ship is matched with the ventilating pipes of various models of the dehumidifying air cooler of the shipyard, avoid turbulent flow, and simultaneously monitor the temperature and the humidity of dry cold air entering the cargo hold of the LNG ship in real time in the use process.

Description

Ventilation switching device

Technical Field

The utility model relates to the technical field of ships, in particular to a ventilation switching device of a dehumidifying air cooler ventilating pipe of an LNG ship and a shipyard.

Background

The LNG (liquefied natural gas) ship cargo hold wall material is easy to rust in natural environment, so that when the LNG ship cargo hold is maintained in a shipyard every 2.5 years, a dehumidifier of the shipyard is required to be used for continuously blowing dry cold air into the LNG ship cargo hold for 24 hours, the humidity in the LNG ship cargo hold is controlled below 55%, the temperature is controlled between 20 and 30 ℃ in spring and autumn and below 30 ℃ in summer and between 20 and 25 ℃ in winter, the dew point is reduced as much as possible on the basis, a low-temperature dry environment is created for the LNG ship cargo hold, and the LNG ship cargo hold is prevented from being corroded.

In the prior art, a soft spiral air pipe is generally adopted as a ventilation pipe of a shipyard dehumidification air cooler, one end of the soft spiral air pipe is connected to a filling station interface of an LNG ship, and cold air is injected from the other end of the soft spiral air pipe by adopting the dehumidification air cooler (or a high-power dehumidification air conditioner).

The following technical problems exist in the prior art: 1. the filling port of the LNG ship is difficult to match with soft spiral air pipes of various models of shipyards; 2. turbulence is easily generated; 3. the temperature and humidity of the dry air sent into the cargo hold of the LNG ship cannot be detected at any time.

Disclosure of Invention

The utility model provides a ventilation switching device of a ventilating pipe of a dehumidifying air cooler of an LNG ship and a shipyard, which solves the problem that in the prior art, soft spiral air pipes of different models are adopted as ventilating pipes by dehumidifying air coolers of different shipyards, and a filling station interface of the LNG ship is difficult to match with the soft spiral air pipes of various models. The utility model adopts the technical scheme that:

the utility model provides a ventilation switching device, includes the dryer, and the dryer sets up to loudspeaker form, and the major diameter end and the filling station interface connection of LNG ship of dryer, the minor diameter end of dryer are used for cup jointing the ventilation pipe of shipyard dehumidification air-cooler, and the periphery side of dryer is provided with spacing arch, and spacing bellied both sides are the great first part of dryer size and the less second part of size respectively, and the mouth of pipe of ventilation pipe is tied up in first part.

Further, a flange plate is arranged at the large-diameter end of the air duct and is in threaded connection with a flange of the filling station interface of the LNG ship through bolts.

Specifically, the large diameter end of the air duct is 350mm in size, and the small diameter end of the air duct is 250mm in size; the flange has an outer diameter of 595mm and an inner diameter of 350mm.

Preferably, the second portion is uniformly provided with a plurality of ventilation holes.

Specifically, the limit protrusion comprises a plurality of rectangular irons, and the rectangular irons are uniformly arranged in a circle along the circumferential direction of the air duct.

Further, a through hole is provided in the first portion, the through hole being used for mounting the functional module.

Specifically, the through hole is welded with a penetrating nut, and the functional module is in threaded connection with the penetrating nut.

Preferably, the functional module is a lifting ring for lifting the ventilation switching device.

Preferably, the functional module is a temperature sensor or a humidity sensor for detecting the internal environment of the wind tunnel.

Preferably, two through holes are arranged, and the included angle of the two through holes in the radial direction of the air duct is 90 degrees.

The utility model has the beneficial effects that:

(1) The ventilation switching device comprises an air duct, a ventilation pipe of the dehumidifying air cooler of the shipyard is directly sleeved outside the air duct, and an iron wire or a binding belt is used in combination with a limit bulge on the periphery side of the air duct, so that the ventilation pipe orifice of the dehumidifying air cooler of the shipyard is tightly tied to a first part with larger size on one side of the limit bulge of the air duct, the ventilation pipe plays a role of anti-drop limit, and meanwhile, the filling station interface of the LNG ship can be matched with ventilation pipes with various sizes;

(2) The air duct is arranged in a horn shape, the small diameter end of the air duct is an air inlet end, when cold air blows, the horn-shaped air duct can slow down the flow speed of gas, so that the temperature of the gas is lower, and meanwhile, turbulent flow can be avoided;

(3) The ventilation switching device is provided with a through hole, and can be used for installing a temperature and humidity sensor so as to detect the temperature and humidity of cold air entering the cargo hold of the LNG ship at any time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the mounting structure of the ventilation switching device and the ventilation pipe in the present utility model;

fig. 2 is a schematic diagram of the ventilation switching device in the present utility model.

1. An air duct; 11. a connection part; 12. a rectifying unit; 13. ventilation and rectifying holes; 2. a flange plate; 3. a limit protrusion; 4. a nut; 5. a hanging ring; 6. and a ventilation pipe.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a ventilation switching device of a dehumidifying air cooler ventilation pipe of an LNG ship and a shipyard. Referring to fig. 1 and 2, the ventilation switching device in the utility model mainly comprises a wind barrel 1, a flange plate 2 and a limiting protrusion 3, wherein the wind barrel 1 is in a horn shape, the flange plate 2 is arranged at the large diameter end of the wind barrel 1, the flange plate 2 is used for being connected with a filling station interface of an LNG ship, a ventilation pipe 6 of a dehumidification air cooler of a shipyard is sleeved at the small diameter end of the wind barrel 1, and the limiting protrusion 3 plays a role in preventing the ventilation pipe 6 from falling off, so that cold air is sent into a pipeline inside the filling station interface of the LNG ship through the ventilation pipe 6. The above-described structure will be described in detail below.

The size of the air duct 1 gradually decreases from one end to the other end, and the whole air duct 1 is approximately horn-shaped. The flange plate 2 is arranged on the large-diameter end of the air duct 1, the size and shape of the flange plate 2 are in fit relation with a flange on a filling station interface of the LNG ship, and the flange plate 2 is in threaded connection with the flange of the filling station interface of the LNG ship through bolts. Specifically, evenly be provided with the screw on the ring flange 2, aim at the screw of filling station interface flange with the screw of ring flange 2, screw the bolt through the spanner and fix ring flange 2 and filling station interface flange to fix ventilation switching device on the filling station interface of LNG ship.

To accommodate the most widely used model sizes in the industry, the dimensions of the flange 2 in the present utility model are defined as: the external diameter of ring flange 2 is 595mm, and the internal diameter is 350mm, and the screw diameter is 27mm, and the screw is provided with 16, and ring flange 2 wholly adopts 5mm thick stainless steel.

The size of the wind tube 1 in the utility model is as follows: the big diameter end size of dryer 1 is 350mm (i.e. the internal diameter of ring flange 2), and the small diameter end size is 250mm, and dryer 1 adopts 10mm thick stainless steel material, adapts to the size of the big majority ventilation pipe 6 of the dehumidification air-cooler of shipyard.

The design form of the limit bulge 3 in the utility model mainly comprises a plurality of square irons which are circumferentially distributed on the peripheral side of the air duct 1, and the square irons are uniformly distributed in a circle along the circumferential direction of the air duct 1. When the ventilation pipe 6 is sleeved on the air duct 1, the clamp or the iron wire or the binding belt is tightly tied on one side of the limiting protrusion 3 close to the flange plate 2, that is, the clamp or the iron wire or the binding belt is tightly tied on one side of the limiting protrusion 3, which is larger in size, of the air duct 1. The limiting protrusion 3 divides the air duct 1 into two parts, namely a first part with a larger size of the air duct 1 and a second part with a smaller size of the air duct 1, wherein the first part is called a connecting part 11, the second part is called a rectifying part 12, and the pipe orifice of the ventilation pipe 6 is fastened on the connecting part 11 for convenience of description. Because the air duct 1 is designed into a horn shape, the ventilation pipe 6 is easy to fall off when being sleeved on the air duct 1, and the utility model can prevent the ventilation pipe 6 from falling off from the air duct 1 by arranging the limiting bulge 3.

The rectifying part 12 is uniformly provided with a plurality of ventilation rectifying holes 13. The ventilation holes 13 are provided for the circulation of cool air. When the ventilation pipe 6 is arranged on the air duct 1, cold air flows from the ventilation pipe 6 to the air duct 1, and when the cold air flows through dead angles between the air duct 1 and the ventilation pipe 6, the cold air can flow into the air duct 1 from the ventilation rectifying hole 13 and then flows into a pipeline inside a filling station interface of the LNG ship. Meanwhile, the ventilation rectifying holes 13 can be used for collecting fixing pieces such as bolts used in installation, and after the ventilation switching device is disassembled, scattered fixing pieces such as bolts can be fixed on the ventilation rectifying holes 13.

The connecting part 11 is provided with two through holes, and the included angle of the two through holes in the radial direction of the air duct 1 is 90 degrees. The through holes are used for installing the functional modules. The functional module can be a hanging ring 5, the hanging ring 5 can provide a hanging point for the installation of the ventilation switching device, and when the ventilation switching device is installed, the hand hoist is hung on the hanging ring 5. Two rings 5 that mutually become 90, the transverse and vertical adjustment direction of ventilation switching device installation in-process of being convenient for makes more convenient and the filling station interface flange matching of LNG ship to make the installation more smooth. The functional module can also be a temperature sensor or a humidity sensor for detecting the temperature and humidity in the air duct 1 in the use process. After the ventilation switching device is smoothly installed at the filling station interface of the LNG ship, the two hanging rings 5 are taken down and are respectively replaced by the temperature sensor and the humidity sensor. The temperature sensor and the humidity sensor are mutually 90-degree included angles in the radial direction of the air duct 1, and compared with 180 degrees, the 90-degree design is more convenient for operators to read the readings of the temperature and humidity sensor every hour.

Based on the above arrangement, the utility model also performs structural optimization according to the actual application of the functional module: a nut 4 is welded in the through hole, and the nut 4 is a penetrating nut. The hanging ring 5 and the temperature and humidity sensor can be fixed on the air duct 1 through threaded connection with the nut 4, and the concrete mode is as follows: the hanging ring 5 can be a screw hanging ring, and comprises a ring body and a threaded rod, wherein the threaded rod is arranged on the ring body and is matched with the nut 4, the threaded rod is screwed into the nut 4, and the ring body of the hanging ring 5 is exposed outside the air duct 1, so that the hanging ring 5 is installed, and the ventilation switching device is convenient to hoist; the temperature and humidity sensor can be provided with a threaded rod (carrying the probe), the threaded rod is fixed on the nut 4, and the probe penetrates into the air duct 1, so that the temperature and humidity inside the air duct 1 are detected.

The utility model has the beneficial effects that:

(1) The ventilation switching device comprises an air duct 1, a ventilation pipe 6 of a shipyard dehumidification air cooler is directly sleeved outside the air duct 1, an iron wire or binding belt is used in combination with a limit bulge 3 on the periphery side of the air duct 1, and the pipe orifice of the ventilation pipe 6 of the shipyard dehumidification air cooler is fastened on one side, close to a flange plate 2, of the limit bulge 3, so that the ventilation pipe 6 plays a role in anti-drop limit, and meanwhile, the filling station interface of an LNG ship can be matched with ventilation pipes 6 with various sizes;

(2) The air duct 1 is arranged in a horn shape, the small diameter end of the air duct 1 is an air inlet end, when cold air blows, the horn-shaped air duct 1 can slow down the flow speed of gas, so that the temperature of the gas is lower, and meanwhile, turbulent flow can be avoided;

(4) The design of the ventilation rectifying hole 13 can help cool air to circulate, and can be used for collecting fixing pieces such as bolts and the like used for installing the ventilation switching device;

(5) The through hole is internally welded with the through nut 4, and the threaded rod of the hanging ring 5 and the threaded rod of the temperature and humidity sensor can be matched with the threads of the nut 4, so that the multipurpose effect is achieved, the design and use cost are well saved, structural redundancy of the ventilation switching device is avoided, and the structure is simplified.

The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a ventilation switching device, its characterized in that, includes the dryer, the dryer sets up to loudspeaker form, the major diameter end and the filling station interface connection of LNG ship of dryer, the minor diameter end of dryer is used for cup jointing the ventilation pipe of shipyard dehumidification air-cooler, the periphery side of dryer is provided with spacing arch, spacing bellied both sides are respectively the great first part of dryer size and the less second part of size, the mouth of pipe of ventilation pipe is tied up first part.

2. The ventilation switching device according to claim 1, wherein a flange is arranged at the large diameter end of the air duct, and the flange is in threaded connection with a flange of a filling station interface of the LNG ship through bolts.

3. The ventilation switching device according to claim 2, wherein the large diameter end of the air duct is 350mm in size and the small diameter end is 250mm in size; the external diameter of ring flange is 595mm, and the internal diameter is 350mm.

4. The ventilation switching device according to claim 1, wherein a plurality of ventilation rectifying holes are uniformly formed in the second portion.

5. The ventilation switching device according to claim 1, wherein the limit protrusion comprises a plurality of rectangular irons which are uniformly arranged in a circle along a circumferential direction of the air duct.

6. The ventilation switching device according to claim 1, wherein a through hole is provided in the first portion, the through hole being used for mounting a functional module.

7. The ventilation switching device according to claim 6, wherein a through nut is welded in the through hole, and the functional module is screwed with the through nut.

8. The ventilation adapter of claim 6, wherein the functional module is a lifting ring for lifting the ventilation adapter.

9. The ventilation switching device according to claim 6, wherein the functional module is a temperature sensor or a humidity sensor for detecting an internal environment of the wind tunnel.

10. The ventilation switching device according to claim 6, wherein two through holes are provided, and an included angle between the two through holes in a radial direction of the air duct is 90 °.