CN112066247B

CN112066247B - Emergency air supply vehicle

Info

Publication number: CN112066247B
Application number: CN202011026765.4A
Authority: CN
Inventors: 霍勇; 李曙阳; 郝亮; 云晨
Original assignee: Hohhot China Gas Urban Gas Development Co ltd
Current assignee: Hohhot China Gas Urban Gas Development Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-07-19
Anticipated expiration: 2040-09-25
Also published as: CN112066247A

Abstract

The invention provides an emergency gas supply vehicle, which comprises: the plurality of gas tanks are used for storing liquefied natural gas and are arranged on the vehicle carrier plate through a plurality of groups of fixing frames; the pressure reducing pry is used for converting the liquefied natural gas into gas and regulating the air pressure and is arranged on the vehicle carrier plate; the portal frame is fixed on the vehicle support plate and used for hoisting the gas tank or decompressing the pry; and the heating module is used for supplying heat to the gas tank or the decompression pry. According to the emergency gas supply vehicle disclosed by the embodiment of the invention, the distributed heating module is used for supplying heat to the gas tank array and the decompression pry, and the portal frame integrated in the carriage is used for hoisting, so that stable gas supply is realized at low cost and high efficiency.

Description

Emergency air supply vehicle

Technical Field

The invention relates to the field of natural gas supply, in particular to a simple and reliable emergency gas supply vehicle.

Background

At present, more and more cities begin to use pipeline natural gas, which not only can be used as fuel for industrial and commercial users, but also can meet daily gas demand of residents. The dependence of users on gas is gradually enhanced, and the continuous and safe natural gas supply becomes a favorable guarantee for social stability.

However, pipelines in old urban areas are increasingly aged, most pressure regulating devices are designed as single units, great disadvantages are brought to maintenance of pressure regulators, and particularly, pressure regulators with large gas consumption can only be maintained when no people use gas at night, so that time and labor are consumed, and much trouble is brought to maintenance work. On the other hand, because the old district place is narrow, current emergent gas supply equipment or vehicle can't get into the operation place in time under the prerequisite that accords with safe operation requirement, and the maintenance of natural gas can't obtain the guarantee.

Further, since natural gas maintenance can be performed only at night, the temperature of the area in the north, particularly in the northeast and inner mongolia areas, at night is as low as below-ten degrees, Liquefied Natural Gas (LNG) in the gas tank cannot be smoothly discharged into the pressure regulator, and the conventional heating device has large occupied area and low safety level, and cannot effectively provide a long-lasting guarantee.

Disclosure of Invention

It is therefore an object of the present invention to overcome the above technical problems so as to enable simple and reliable emergency air supply.

The invention provides an emergency gas supply vehicle, which comprises:

the plurality of gas tanks are used for storing liquefied natural gas and are arranged on the vehicle carrier plate through a plurality of groups of fixing frames;

the pressure reducing pry is used for converting the liquefied natural gas into gas and regulating the air pressure, and is arranged on the vehicle carrier plate;

the portal frame is fixed on the vehicle support plate and used for hoisting the gas tank or decompressing the pry;

and the heating module is used for supplying heat to the gas tank or the decompression pry.

Each group of fixing frames comprises a first fixing frame and a second fixing frame which are oppositely arranged, fixing grooves are formed in the upper surfaces of the first fixing frame, the second fixing frame and the vehicle support plate, fixing clamps are arranged on the lower surfaces of the first fixing frame and the second fixing frame and the portal frame, and the fixing grooves are matched with the fixing clamps to realize fixing. Wherein, the fixing clip includes cylindrical body, and body center utensil screwed axostylus axostyle, a plurality of flexible posts in the body inner groovy, the rotatory slope lateral wall that promotes flexible post contact fixed slot of axostylus axostyle in the installation. Wherein, the inclination of axostylus axostyle lateral wall is greater than the inclination of fixed slot lateral wall.

Wherein, including a plurality of pressure regulating passageways in the decompression sled, every pressure regulating pipeline has filter, counter, pressure controller, includes the valve of a plurality of series connections in the filter, and the entry and the hose of pressure regulating pipeline collect the liquid delivery outlet that forms and link to each other, and the gas outlet of pressure regulating pipeline then further links to each other with the entry of the pressure regulating case that waits to overhaul.

The portal frame comprises at least two vertical supporting columns, at least one sliding rod between the two supporting columns, and a sliding block connected with the fixed card by a chain on each sliding rod. Wherein, the lateral surface of four support columns of four angles departments of vehicle carrying board covers the carriage board.

Wherein, the power supply of the emergency air supply vehicle is also used as the heat source of the heating module. Wherein the heat source supplies heat to the gas tank or the decompression pry through the heat exchanger, the primary heat pipe and the secondary heat pipe. Wherein, after the air feed vehicle arrived the construction site, emergent air feed vehicle was disconnected transmission system from the power supply to according to outside environment temperature and automatically reduce the output of power supply until satisfying the heat supply demand.

According to the emergency gas supply vehicle disclosed by the embodiment of the invention, the distributed heating module is used for supplying heat to the gas tank array and the decompression pry, and the portal frame integrated in the carriage is used for hoisting, so that stable gas supply is realized at low cost and high efficiency.

The stated objects of the invention, as well as other objects not listed here, are met within the scope of the independent claims of the present application. Embodiments of the invention are defined in the independent claims, with specific features being defined in the dependent claims.

Drawings

The technical solution of the present invention is explained in detail below with reference to the accompanying drawings, in which:

FIG. 1 shows a block diagram of an emergency gas supply vehicle according to the present invention;

FIG. 2 shows a schematic cross-sectional view of the holder of FIG. 1; and

fig. 3 is an enlarged view of the fixing clip and the fixing groove of fig. 2.

Detailed Description

The features and technical effects of the technical scheme of the invention are described in detail below with reference to the accompanying drawings and exemplary embodiments, and an emergency air supply vehicle capable of realizing stable air supply with low cost and high efficiency is disclosed. It is noted that like reference numerals refer to like structures and that the terms "first", "second", "upper", "lower", and the like as used herein may be used to modify various structures. These modifications do not imply a spatial, sequential, or hierarchical relationship to the structures being modified unless specifically stated.

As shown in fig. 1, the emergency gas-supplying vehicle according to the preferred embodiment of the present invention includes a vehicle-carrying plate, a portal frame, a fixing frame, a gas tank group, a decompression pry and a heating module. The vehicle-carrying plate is, for example, a metal plate mounted on a vehicle chassis, or a skeleton frame or a grid integrally formed with the chassis. The gantry is fixed on the vehicle-carrying plate, and at least comprises two upright supporting columns (preferably four supporting columns distributed at four corners of the vehicle-carrying plate, and more preferably, the outer side surfaces of the four supporting columns cover the vehicle-carrying plate (not shown) for heat preservation protection), at least one sliding rod movably connected between the two supporting columns (preferably, between the four supporting columns, and a sliding rod is respectively arranged between every two adjacent supporting columns, such as a motor or a cylinder drives a fixed seat (not shown) at the top of the supporting column to move the sliding rod up and down), and each sliding rod is provided with a sliding block (not shown) connected with the fixed card by a chain for left and right and up and down movement. The gas tank array is formed by a plurality of gas tanks storing liquefied natural gas, and is arranged on the vehicle carrier plate by a plurality of groups of fixing frames.

Fig. 2 is a schematic view of the fixing frames, wherein each group of fixing frames is composed of a first fixing frame above and a second fixing frame below, at least one fixing clip is mounted or integrated on the lower surfaces of the first fixing frame and the second fixing frame, at least one fixing groove is formed on the upper surfaces of the first fixing frame and the second fixing frame, at least one fixing groove is correspondingly formed on the upper surface of the vehicle-mounted plate, and each fixing groove accommodates each fixing clip to realize stable connection, so as to fix the gas tank. Preferably, a gasket is arranged between the gas tank and the fixed frame, and is made of elastic materials such as rubber, sponge, cork and the like, so that mechanical impact on the gas tank during the running process of the vehicle is buffered, and leakage is avoided.

Fig. 3 is an enlarged view of the fixing clip of fig. 2, wherein the fixing groove is a truncated cone shape with a narrow top and a wide bottom. The body of fixing clip is cylindrical, and has the screw thread on the axostylus axostyle lateral wall at fixing clip center, when fixed mounting, along with the rotation of axostylus axostyle promotes a plurality of flexible posts of distribution in the body inner groovy and outwards stretches out until contacting the slope lateral wall of the inside shrink of fixed slot to combine fixed slot and fixing clip together. The shaft rod is also of a truncated cone shape with a narrow top and a wide bottom as shown in the figure, and the inclination of the side wall of the shaft rod is preferably greater than that of the side wall of the fixing groove, so that the telescopic column close to the bottom of the fixing groove applies greater pressure to the side wall of the fixing groove, and a constructor can realize interference fit between the fixing card and the fixing groove without adopting other pressurizing devices. Preferably, the axostylus axostyle has magnetism, and at the disassembly mount in-process, thereby flexible post can adsorb automatically on the axostylus axostyle to the axle center motion, has saved constructor's physical power and need not extra equipment of demolising. It is further preferred that the telescopic post has a ball bearing against which the spring is retained, and the recess in the body near the shaft has a recess in which the ball is retained in the disassembled state to prevent the telescopic post from being unnecessarily extended, and the shaft pushes the telescopic post to extend outward during installation so that the ball is pushed out of the recess and fits between the telescopic post and the recess in the body (none shown in fig. 3 above).

Referring next to fig. 1, at least one hose is connected to each tank, and the hoses are joined together to form a liquid outlet for supplying lng to the pressure reducing skid. The fixing mode of the pressure reducing pry on the vehicle support plate is the same as that of the fixing frame. Inside the pressure reduction sled, a plurality of pressure regulating pipelines have been included, every pressure regulating pipeline has filter, counter, pressure controller, includes the valve of a plurality of series connections in the filter, and the entry and the hose of pressure regulating pipeline collect the liquid delivery outlet that forms and link to each other, and the gas outlet of pressure regulating pipeline then further links to each other with the entry of the pressure regulating case that awaits overhauling (not shown in the above figure). Preferably, the hose is composed of an inner tube made of stainless steel and an outer tube made of resin material, the inner tube is used for conveying LNG, the outer tube is used for heat preservation and fire prevention, and a coloring agent or a repairing agent is preferably filled between the outer tube and the inner tube, the coloring agent is for example resin mixed with inorganic mineral pigment or organic fluorescent powder, and the repairing agent is a material with negative temperature expansion coefficient or negative pressure expansion coefficient, so that possible hose leakage can be found in time under low-light environment at night and micro cracks can be automatically repaired and repaired in the first time.

Because construction environment temperature is low night, LNG is difficult to gasify rapidly after carrying the decompression sled from the gas pitcher, blocks up the hose easily, has integrateed the heating module for this reason this application on emergent gas feed car especially, utilizes the energy of vehicle self to heat. Vehicles use an internal combustion engine (gasoline or diesel, or LNG as fuel) as a power source, which also serves as a heat source for the heating module. For example, an exhaust gas pipe of an internal combustion engine has a zigzag coiled structure at the bottom of a vehicle-carrying plate to constitute a heat exchanger (not shown), and heat is supplied to an upward gas tank or a decompression sled. Preferably, the heat exchanger formed by the exhaust gas pipeline exchanges heat with the primary heat pipe filled with oil, and the primary heat pipe is further subdivided into a plurality of secondary heat pipes which extend to the vicinity of a pressure regulating pipeline (not shown) inside each gas tank or the pressure reducing lever, so that local concentrated heating is performed on a required part, thereby saving energy consumption and improving heat supply efficiency. In other preferred embodiments, the vehicle uses the battery pack as a power source, and the heating module is the battery pack itself, and the battery itself heats up during driving to supply heat to the upper part, but the battery is not chemically efficient in winter, and the heating effect is inferior to that of a traditional internal combustion engine. Further preferably, after the air supply vehicle arrives at the construction site and the operator stops the vehicle, the emergency air supply vehicle disconnects the transmission system from the power system formed by the internal combustion engine or the battery pack, and automatically reduces the output power of the power source according to the outside ambient air temperature measured by a sensor (not shown) until the heat supply demand required for the LNG vaporization is satisfied.

While the invention has been described with reference to one or more exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the disclosure without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the disclosed system configuration and method of manufacture will include all embodiments falling within the scope of the present invention.

Claims

1. An emergency gas supply vehicle comprising:

a plurality of gas tanks for storing liquefied natural gas are installed on a vehicle carrier plate by a plurality of groups of fixing frames, each group of fixing frames comprises a first fixing frame and a second fixing frame which are oppositely arranged, fixing grooves are formed in the upper surfaces of the first fixing frame, the second fixing frame and the vehicle carrier plate, fixing clamps are arranged on the lower surfaces of the first fixing frame and the second fixing frame and a portal frame, the fixing grooves are matched with the fixing clamps to realize fixing, each fixing clamp comprises a cylindrical body, a shaft rod with threads is arranged in the center of the body, a plurality of telescopic columns in grooves in the body are arranged, the shaft rod rotates to push the telescopic columns to contact with inclined side walls of the fixing grooves in the installation process, the shaft rod has magnetism, the telescopic columns can be automatically adsorbed on the shaft rod to move towards the center of the shaft in the disassembling process of the fixing frames, balls which are buckled on springs are arranged on the telescopic columns, the positions, close to the shaft rod, of the grooves in the bodies are provided with concave grooves, the concave grooves are provided with concave grooves to prevent the telescopic columns from unnecessarily extending out in the disassembling state, in the installation process, the shaft rod pushes the telescopic column to extend outwards, so that the ball is extruded out of the recess and attached between the telescopic column and the inner groove of the body;

the pressure reducing pry is used for converting liquefied natural gas into gas and regulating air pressure and is installed on a vehicle carrier plate, a plurality of pressure regulating channels are arranged in the pressure reducing pry, each pressure regulating pipeline is provided with a filter, a meter and a pressure controller, an inlet of each pressure regulating pipeline is connected with a liquid outlet formed by converging a hose, a gas outlet of each pressure regulating pipeline is further connected with an inlet of a pressure regulating box to be overhauled, each hose is composed of an inner pipe made of stainless steel and an outer pipe made of resin material, a repairing agent is filled between each outer pipe and each inner pipe, and the repairing agent is made of a material with a negative temperature expansion coefficient;

2. An emergency gas supply vehicle according to claim 1, wherein the inclination of the side walls of the shaft is greater than the inclination of the side walls of the holding groove.

3. An emergency gas supply vehicle according to claim 1, characterised in that the filter includes a plurality of valves connected in series.

4. An emergency gas-supplying vehicle according to claim 1, wherein the portal frame comprises at least two upright support columns, at least one slide bar between the two support columns, each slide bar having a slide block connected to the fixed card by means of a chain.

5. An emergency gas-supplying vehicle according to claim 4, wherein the outer side surfaces of the four support columns at the four corners of the vehicle carrier plate cover the vehicle compartment plate.

6. The emergency gas supply vehicle of claim 1, wherein the power source of the emergency gas supply vehicle also serves as the heat source for the heating module.

7. The emergency gas supply vehicle according to claim 6, wherein the heat source supplies heat to the gas tank or the decompression sled via a heat exchanger, a primary heat pipe, a secondary heat pipe.

8. An emergency gas supply vehicle according to claim 6, wherein, after the vehicle arrives at the construction site, the vehicle disconnects the drive train from the power source and automatically reduces the output power of the power source in accordance with the outside ambient temperature until the heat supply demand is met.