阅读说明：本技术 天然气降压机 (Natural gas depressurization machine ) 是由 聂伦喜 聂少云 徐送林 于 2020-06-04 设计创作，主要内容包括：本发明公开了天然气降压机,包括机架、驱动机构、降压机构和传动机构,所述驱动机构通过所述传动机构与所述降压机构连接,所述降压机构包括缸体、与所述缸体连接的缸盖以及设置于所述缸体内的活塞组件,所述缸体内设置有进气室、进气单向阀、出气室、出气单向阀、以及用于收容所述活塞组件的活塞室,所述进气单向阀连通所述进气室和所述活塞室,所述出气单向阀连通所述出气室和所述活塞室,所述活塞组件与所述传动机构连接,所述活塞组件在所述活塞室内做往复运动,本发明能够有效的降低储液罐的压力,防止储液罐因天然气压力过大而产生安全隐患,同时不需要向空中排放天然气即可达到降压的目的,提高企业的经济效益,防止空气污染。(The invention discloses a natural gas pressure reducing machine, which comprises a rack, a driving mechanism, a pressure reducing mechanism and a transmission mechanism, wherein the driving mechanism is connected with the pressure reducing mechanism through the transmission mechanism, the pressure reducing mechanism comprises a cylinder body, a cylinder cover connected with the cylinder body and a piston assembly arranged in the cylinder body, an air inlet chamber, an air inlet one-way valve, an air outlet chamber, an air outlet one-way valve and a piston chamber used for accommodating the piston assembly are arranged in the cylinder body, the air inlet one-way valve is communicated with the air inlet chamber and the piston chamber, the air outlet one-way valve is communicated with the air outlet chamber and the piston chamber, the piston assembly is connected with the transmission mechanism, and the piston assembly reciprocates in the piston chamber. Improve the economic benefit of enterprises and prevent air pollution.)

1. Natural gas step-down transformer, including frame, actuating mechanism (1), step-down mechanism (2) and drive mechanism (3), its characterized in that: the driving mechanism (1) is connected with the pressure reduction mechanism (2) through the transmission mechanism (3), the pressure reduction mechanism (2) comprises a cylinder body (21), a cylinder cover (22) connected with the cylinder body (21) and a piston assembly (23) arranged in the cylinder body (21), an air inlet chamber (211), an air inlet one-way valve (212), an air outlet chamber (213), an air outlet one-way valve (214) and a piston chamber (215) for accommodating the piston assembly (23) are arranged in the cylinder body (21), the intake check valve (212) communicating the intake chamber (211) and the piston chamber (215), the air outlet one-way valve (214) is communicated with the air outlet chamber (213) and the piston chamber (215), the piston assembly (23) is connected with the transmission mechanism (3), and the piston assembly (23) reciprocates in the piston chamber (215).

2. The natural gas pressure reducing machine according to claim 1, wherein: the piston assembly (23) comprises a connecting rod (231), a piston (232) hinged to one end of the connecting rod (231) and an eccentric shaft (233) hinged to the other end of the connecting rod (231), two ends of the eccentric shaft (233) are connected with the cylinder body (21) through bearing seats, and one end of the eccentric shaft (233) is connected with the transmission mechanism (3).

3. The natural gas pressure reducing machine according to claim 1, wherein: the driving mechanism (1) comprises a motor box (11), a motor (12) arranged in the motor box (11) and a connecting shaft (13) connected with a main shaft of the motor (12), wherein the connecting shaft (13) penetrates through the motor box (11) and is connected with the transmission mechanism (3).

4. The natural gas pressure reducing machine according to any one of claims 1 to 3, characterized in that: the transmission mechanism (3) comprises a belt (31), a driving belt pulley (32) connected with one end of the connecting shaft (13) and a driven belt pulley (33) connected with one end of the eccentric shaft (233), and the driving belt pulley (32) is connected with the driven belt pulley (33) through the belt (31).

5. The natural gas pressure reducing machine according to claim 1, wherein: the air inlet check valve (212) and the air outlet check valve (214) are arranged oppositely.

6. The natural gas pressure reducing machine according to claim 1, wherein: the cylinder body (21) is further provided with an air inlet (216) located on one side of the air inlet chamber (211) and an air outlet (217) located on one side of the air outlet chamber (213), the air inlet chamber (211) is connected with the air inlet pipeline (6) through the air inlet (216), and the air outlet chamber (213) is connected with the air outlet pipeline (7) through the air outlet (217).

7. The natural gas pressure reducing machine according to claim 3, wherein: and fireproof liquid (14) is also arranged in the motor box (11).

8. The natural gas pressure reducing machine according to claim 1, wherein: the frame includes protection machanism (4), protection machanism (4) are including bottom plate (41), base (42) and elastic component (43), bottom plate (41) pass through elastic component (43) with base (42) are connected.

9. The natural gas pressure reducing machine according to claim 8, wherein: the elastic piece (43) comprises a spring seat (431), a spring (432) located in the spring seat (431), and a connecting plate (433) connected with the top of the spring (432), wherein the spring seat (431) is fixed with the base (42), and the connecting plate (433) is fixed with the bottom plate (41).

10. The natural gas pressure reducing machine according to claim 1, wherein: the rack also comprises a pushing mechanism (5), the pushing mechanism (5) comprises a handle (51), a push plate (52) hinged with the handle (51) and a roller (53) positioned at the bottom of the base (41), and the two push plates (52) are fixedly connected with one side of the base (51).

Technical Field

The invention relates to the technical field of natural gas depressurization machine devices, in particular to a natural gas depressurization machine.

Background

The natural gas is a flammable and explosive product, is an ultralow-temperature liquid, has a liquid temperature of-162 ℃, is converted into gas when the temperature is raised to about 15 ℃ at normal temperature, has a volume which can be rapidly increased along with the temperature rise, and is 1: 600, increasing the speed; because the ultra-low temperature characteristic of natural gas, natural gas can be continuous intensification, vaporization, step up when the holding vessel is static, and gas accessible discharges in the natural gas holding vessel following mode: 1. the pressure in the storage tank is reduced by the pipeline network discharging mode; 2. the rising gas is cooled in a liquid adding mode, and the gas is liquefied to reduce the temperature and the pressure of the storage tank; 3. and (4) dispersing, namely directly discharging the gas in the storage tank to the air through a pipeline.

Although the wear-resistant multi-stage pressure reducing mechanism disclosed in the chinese patent application publication CN201721831724.6 can significantly reduce the operating pressure difference of the pressure reducing valve by installing the wear-resistant multi-stage pressure reducing mechanism at the downstream of the pressure reducing valve, the wear-resistant multi-stage pressure reducing mechanism bears the remaining pressure difference of the system, the medium flow rate at the valve core of the pressure reducing valve is significantly reduced, the valve core wear is greatly reduced, the operation cycle of a high-grade special pressure reducing valve is greatly prolonged, and the problem of wear of a pipeline behind the valve is effectively alleviated, but the wear-resistant multi-stage pressure reducing mechanism is not convenient to disassemble and install, the thickness of the inner diameter of the inner cylinder is repeatedly changed along the axial direction, and the wear.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, the present invention aims to provide a natural gas pressure reducing machine.

The invention aims to provide a natural gas depressurization machine to solve the problem that the required pressure cannot be obtained in time because the natural gas is continuously heated, vaporized and pressurized when a storage tank is static in the background technology.

The invention is realized by the following technical scheme.

Natural gas pressure reducing machine, including frame, actuating mechanism, pressure reducing mechanism and drive mechanism, actuating mechanism passes through drive mechanism with pressure reducing mechanism connects, pressure reducing mechanism include the cylinder body, with the cylinder cap that the cylinder body is connected and set up in piston assembly in the cylinder body, be provided with air inlet chamber, the check valve that admits air, give vent to anger the check valve in the cylinder body and be used for acceping piston assembly's piston chamber, the check valve intercommunication that admits air the air inlet chamber with the piston chamber, the check valve intercommunication of giving vent to anger give vent to anger the air chamber with the piston chamber, piston assembly with drive mechanism connects, piston assembly is in reciprocating motion is indoor.

Preferably, the piston assembly comprises a connecting rod, a piston hinged to one end of the connecting rod, and an eccentric shaft hinged to the other end of the connecting rod, two ends of the eccentric shaft are connected with the cylinder body through bearing seats, and one end of the eccentric shaft is connected with the transmission mechanism.

Preferably, the driving mechanism comprises a motor box, a motor arranged in the motor box and a connecting shaft connected with the motor spindle, and the connecting shaft penetrates through the motor box and is connected with the transmission mechanism.

Preferably, the transmission mechanism comprises a belt, a driving pulley connected with one end of the connecting shaft, and a driven pulley connected with one end of the eccentric shaft, and the driving pulley is connected with the driven pulley through the belt.

Preferably, the air inlet check valve and the air outlet check valve are arranged oppositely.

Preferably, the cylinder body is further provided with an air inlet positioned on one side of the air inlet chamber and an air outlet positioned on one side of the air outlet chamber, the air inlet chamber is connected with the air inlet pipeline through the air inlet, and the air outlet chamber is connected with the air outlet pipeline through the air outlet.

Preferably, fire-proof liquid is further arranged in the motor box.

Preferably, the rack comprises a protection mechanism, the protection mechanism comprises a bottom plate, a base and an elastic piece, and the bottom plate is connected with the base through the elastic piece.

Preferably, the elastic member includes a spring seat, a spring located in the spring seat, and a connecting plate connected to the top of the spring, the spring seat is fixed to the base, and the connecting plate is fixed to the bottom plate.

Preferably, the rack further comprises a pushing mechanism, the pushing mechanism comprises a handle, a push plate hinged to the handle and rollers located at the bottom of the base, and the push plate is fixedly connected with one side of the base.

Compared with the prior art, the invention has the beneficial effects that: the gas inlet pipe is connected with the gas inlet chamber, the gas outlet pipe is connected with the gas outlet chamber, the gas inlet chamber and the gas outlet chamber are respectively communicated with the piston chamber through the gas inlet one-way valve and the gas outlet one-way valve, the gasified natural gas enters the piston chamber through the gas inlet pipe and the gas inlet chamber, the motor drives the eccentric shaft to rotate through the transmission mechanism, the eccentric shaft drives the piston to reciprocate in the piston chamber through the connecting rod, the gasified natural gas is further compressed to be liquefied natural gas, the liquefied natural gas enters the liquid storage tank through the gas outlet chamber and the gas outlet pipe, and therefore the pressure reduction effect of the liquid storage tank is achieved.

The air inlet one-way valve and the air outlet one-way valve are arranged oppositely, namely the air inlet one-way valve is opened when the piston chamber is in negative pressure, the air outlet one-way valve is closed, and vice versa, namely only one side of the piston chamber is ensured to be communicated, and natural gas is prevented from flowing backwards.

Still be provided with fire prevention liquid in the motor case, the motor soaks in the fire prevention liquid plays the effect of cooling fire prevention to the motor, prevents that the motor operation in-process from producing high temperature and igniting the natural gas and cause major accident.

The bottom plate with it is fixed through spring part interconnect between the base to play the cushioning effect, avoid this natural gas step-down transformer to take place unstable factor in operation process, simultaneously the bottom plate is provided with the louvre, is favorable to the heat dissipation, avoids the high temperature to lead to device life to shorten, the handle with the push pedal is articulated, the handle uses the handle hinged end to rotate as the axle center, and when the handle was used for thrust unit, can also accomodate it in order, plays the effect of practicing thrift usage space, avoids occuping use space and the operation that brings is inconvenient, when embodying the device flexibility, brings into humanized design.

Meanwhile, natural gas in the tank wagon can be input into the liquid storage tank through the equipment.

To sum up, this natural gas step-down machine can effectual reduction liquid storage pot's pressure, prevents that the liquid storage pot from producing the potential safety hazard because of natural gas pressure is too big, and in the liquid storage pot was inputed again to the natural gas through this equipment step-down simultaneously, the natural gas circulates between this equipment and the liquid storage pot again, need not reach the purpose of step-down to aerial natural gas of discharging, improves the economic benefits of enterprise, prevents air pollution.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a schematic structural diagram of a driving mechanism, a pressure reducing mechanism and a transmission mechanism according to the present invention;

FIG. 4 is a top view of the drive mechanism, the pressure reducing mechanism and the transmission mechanism of the present invention;

FIG. 5 is a left side view of the drive mechanism, the pressure reducing mechanism and the transmission mechanism of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is an enlarged view of a portion C of FIG. 6;

FIG. 9 is a schematic view of the structure of the elastic member of the present invention;

in the figure: 1-a drive mechanism; 11-a motor box; 12-a motor; 13-a connecting shaft; 14-fire-proof liquid;

2-a pressure reduction mechanism; 21 cylinder body; 211-an inlet chamber; 212-inlet check valve; 213-an air outlet chamber; 214-outlet one-way valve; 215-piston chamber; 216-an air inlet; 217-air outlet; 22-cylinder cover; 23-a piston assembly; 231-a connecting rod; 232-a piston; 233-eccentric shaft;

3-a transmission mechanism; 31-a belt; 32-a drive pulley; 33-a driven pulley;

4-a protection mechanism; 41-a bottom plate; 42-a base; 43-an elastic member; 431-spring seat; 432-a spring; 433-a connecting plate;

5-a pushing mechanism; 51-a handle; 52-push plate; 53-a roller;

6-an air inlet pipeline 61-an air inlet valve 62-a BOG tee joint; 63-BOG pipeline;

7-an air outlet pipeline 71-an air outlet valve 72-an LNG tee; 73-LNG pipeline;

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.