CN112177881A

CN112177881A - Multi-cavity middle body of natural gas compressor

Info

Publication number: CN112177881A
Application number: CN202010874443.9A
Authority: CN
Inventors: 刘云; 张秀好; 张旻亮
Original assignee: Bengbu Xiangyun Compressor Manufacturing Co ltd
Current assignee: Bengbu Xiangyun Compressor Manufacturing Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-01-05
Anticipated expiration: 2040-08-27
Also published as: CN112177881B

Abstract

The invention discloses a multi-cavity middle body of a natural gas compressor, which relates to the technical field of natural gas compressor accessories and comprises a compressor body, a middle body and a compression cylinder, wherein the middle body is fixedly arranged between the compressor body and the compression cylinder, one end of a transmission shaft of the compression cylinder, which penetrates through the middle body and extends into the compressor body, is fixedly provided with a compression plunger, the middle body is divided into three cavities through a first partition plate and a second partition plate, the top of the middle cavity is provided with a three-way pipe and a return pipe in a penetrating way, the top of the middle cavity is fixedly provided with a fourth air pump, the exhaust end of the fourth air pump is communicated with the three-way pipe, and the top of the middle body is fixedly provided with a cooling box and a heating box. The waste of natural gas is reduced, and the economic value is higher.

Description

Multi-cavity middle body of natural gas compressor

Technical Field

The invention relates to the technical field of natural gas compressor accessories, in particular to a multi-cavity middle body of a natural gas compressor.

Background

The natural gas refers to all gases naturally existing in nature, including gases formed in various natural processes in an air space, a water space and a rock space, including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like. Natural gas is composed primarily of gaseous low molecular hydrocarbons mixed with non-hydrocarbon gases, primarily methane and minor amounts of ethane, propane, nitrogen and butane. The fuel is mainly used as fuel, and is also used for preparing chemical raw materials of acetaldehyde, acetylene, ammonia, carbon black, ethanol, formaldehyde, hydrocarbon fuel, hydrogenated oil, methanol, nitric acid, synthesis gas, chloroethylene and the like, is one of safer fuel gases, does not contain carbon monoxide, is lighter than air, can be diffused upwards immediately once leaked, is not easy to accumulate to form explosive gas, is higher than other fuel bodies in safety, is a clean and environment-friendly high-quality energy source, hardly contains sulfur, dust and other harmful substances, generates carbon dioxide during combustion and is less than other fossil fuels, so that the greenhouse effect is lower, the environmental quality can be fundamentally improved, the natural gas is clean, the service life of a stove can be prolonged, and the maintenance expense of a user can be reduced. The natural gas is clean gas, the supply is stable, and the air quality can be improved, so that new power can be provided for economic development of the region, the economic prosperity is driven, and the environment is improved.

The natural gas is usually compressed into liquid for storage and transportation, which needs to use a natural gas compressor, the most common natural gas compressors at present are reciprocating compressors, the basic principle is that the volume of a cylinder body is periodically changed through the reciprocating motion of a piston or a diaphragm in a cylinder, and the gas is pressurized and conveyed, the structure of the compressor is mainly that a crankcase of a machine body is sequentially connected through a middle body part, a connecting cylinder part and the cylinder, the middle body and the connecting cylinder are used as an intermediate connecting part, the joint of the middle body and the connecting cylinder is provided with a butt joint surface which is pressed and fixed by a connecting bolt, a crosshead slide way is arranged in the middle body, a crosshead can do reciprocating motion in the crosshead slide way, a piston rod connected with the crosshead penetrates through the connecting cylinder and extends into the cylinder, an oil scraper is also arranged in the connecting cylinder to prevent lubricating oil from entering the filler and the cylinder, but the existing natural gas compressor has the problems of single use mode and natural gas loss.

Disclosure of Invention

The invention aims to provide a multi-cavity middle body of a natural gas compressor, which aims to solve the problems of single use mode and high natural gas loss in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a natural gas compressor multi-cavity middle body comprises a compressor body, a middle body and a compression cylinder, wherein the middle body is fixedly arranged between the compressor body and the compression cylinder, a transmission shaft of the compression cylinder penetrates through the middle body and extends to one end in the compressor body, a compression plunger is fixedly arranged at one end in the compressor body, the middle body is divided into three cavities through a first partition plate and a second partition plate, a three-way pipe and a return pipe are arranged at the top of the middle cavity in a penetrating mode, a fourth air pump is fixedly arranged at the top of the middle cavity in the middle, an exhaust end of the fourth air pump is communicated with the three-way pipe, a cooling box and a heating box are fixedly arranged at the top of the middle body, two ends of the three-way pipe are respectively communicated with the cooling box and the heating box, and the return pipe is respectively communicated with the cooling box and the heating box through a first guide pipe, be located both sides cavity bottom is worn to be equipped with communicating pipe, be provided with the pressure valve in communicating pipe, well body bottom fixed mounting has driving motor, install gaseous processing case on driving motor's the output shaft, compressor body bottom is worn to be equipped with pipe three, compressor body bottom fixed mounting has first air pump, first air pump one end with pipe three intercommunication, the first air pump other end through pipe four with gaseous processing case intercommunication, pipe four with gaseous processing case is the rotation sealing connection.

Preferably, the first guide pipe and the second guide pipe are provided with valves, the first partition plate and the second partition plate are provided with sealing boxes in a penetrating mode, and a transmission shaft of the compression cylinder penetrates through the sealing boxes.

Preferably, the gas treatment box is internally divided into a first treatment cavity, a second treatment cavity and a third treatment cavity, the first treatment cavity and the second treatment cavity are internally provided with installation cavities, and the bottoms of the first treatment cavity and the third treatment cavity are fixedly provided with nitrogen making machines.

Preferably, a second air pump is fixedly installed in the installation cavity, electronic telescopic pipes are fixedly installed at the tops of the first treatment cavity and the third treatment cavity, and the second air pump is communicated with the electronic telescopic pipes.

Preferably, a third air pump is fixedly installed in the second treatment cavity, the third air pump communicates the second treatment cavity with the first treatment cavity and the third treatment cavity simultaneously, a natural gas pipe is arranged at the bottom of the second treatment cavity, and the natural gas pipe is communicated with the fourth guide pipe.

Preferably, the cooling box internal fixation is provided with the cooling water siphunculus, first inlet tube and first outlet pipe have been welded respectively at cooling water siphunculus top both ends.

Preferably, the first water inlet pipe and the first water outlet pipe are communicated through a thin guide pipe, a blowing seat is fixedly arranged at the top of the cooling box, a blowing groove is formed in the blowing seat, and a blowing fan is installed in the blowing groove.

Preferably, the heating cabinet internal fixation is provided with the hot water siphunculus, heating cabinet top fixed mounting has storage water tank and water pump, storage water tank bottom fixed mounting has the hot plate, the filler pipe is worn to be equipped with at the storage water tank top.

Preferably, one end of the hot water through pipe is communicated with the water storage tank through a second water inlet pipe, the other end of the hot water through pipe is communicated with the water pump, and the water pump is communicated with the water storage tank through a second water outlet pipe.

The invention has the technical effects and advantages that:

the compressor has a flexible structure, has multiple use modes, can select different use modes according to actual scenes, is suitable for being used in low-temperature and high-temperature environments, can keep relatively stable concentrations of nitrogen and natural gas, can collect the natural gas and then convey the natural gas into the compressor body, reduces the waste of the natural gas and has higher economic value.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

FIG. 2 is a cross-sectional view of the gas processing chamber of the present invention.

Fig. 3 is a schematic view of a cooling tank of the present invention.

Fig. 4 is a cross-sectional view of a heating chamber of the present invention.

In the figure: 1. a compressor body; 2. a middle body; 3. a compression cylinder; 4. a drive shaft; 5. compressing the plunger; 6. a first partition plate; 7. a second partition plate; 8. a cooling tank; 9. a heating box; 10. a three-way pipe; 11. a first conduit; 12. a second conduit; 13. a return pipe; 14. a valve; 15. a drive motor; 16. a gas treatment tank; 17. a communicating pipe; 18. a first air pump; 19. a third conduit; 20. a fourth conduit; 21. a first processing chamber; 22. a second processing chamber; 23. a third processing chamber; 24. an electronic telescopic pipe; 25. a mounting cavity; 26. a second air pump; 27. a third air pump; 28. a natural gas pipe; 29. a nitrogen making machine; 30. cooling water through pipes; 31. a first water inlet pipe; 32. a first water outlet pipe; 33. a thin catheter; 34. a blowing base; 35. a blower fan; 36. a hot water through pipe; 37. a water storage tank; 38. a water feeding pipe; 39. heating plates; 40. a second water inlet pipe; 41. a water pump; 42. a second water outlet pipe; 43. and a fourth air pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A natural gas compressor multi-cavity middle body comprises a compressor body 1, a middle body 2 and a compression cylinder 3.

Referring to fig. 1, the middle body 2 is fixedly installed between the compressor body 1 and the compression cylinder 3, the transmission shaft 4 of the compression cylinder 3 passes through the middle body 2 and extends to one end in the compressor body 1 to be fixedly provided with the compression plunger 5, the middle body 2 is divided into three cavities by the first partition plate 6 and the second partition plate 7, the top of the middle cavity is provided with a three-way pipe 10 and a return pipe 13, the top of the middle cavity is fixedly provided with a fourth air pump 43, the exhaust end of the fourth air pump 43 is communicated with the three-way pipe 10, the top of the middle body 2 is fixedly provided with a cooling box 8 and a heating box 9, two ends of the three-way pipe 10 are respectively communicated with the cooling box 8 and the heating box 9, the return pipe 13 is respectively communicated with the cooling box 8 and the heating box 9 by a first conduit 11 and a second conduit 12, the bottoms of the cavities at two sides are provided with a communicating pipe 17, 2 bottom fixed mounting of midbody has driving motor 15, install gaseous processing case 16 on driving motor 15's the output shaft, 1 bottom of compressor body is worn to be equipped with pipe three 19, 1 bottom fixed mounting of compressor body has first air pump 18, 18 one end of first air pump and three 19 intercommunications of pipe, 18 other ends of first air pump pass through pipe four 20 and gaseous processing case 16 intercommunication, pipe four 20 and gaseous processing case 16 are rotation sealing connection, all install valve 14 on pipe 11 and the pipe two 12, all wear to be equipped with sealed letter on first division board 6 and the second division board 7, transmission shaft 4 of compression cylinder 3 wears to establish in sealed letter.

It should be further explained that, in the present invention, the compression cylinder 3 and the compressor body 1 are both components of the existing compressor, which is a mature existing technology, and the middle body 2 is installed between the compression cylinder 3 and the compressor body 1, the middle body 2 is divided into three cavities by the first partition plate 6 and the second partition plate 7 to form a multi-cavity structure, when in use, the three cavities are sequentially filled with high-concentration nitrogen, middle-concentration nitrogen and low-concentration nitrogen from left to right, the middle-concentration nitrogen in the middle cavity is in a circulating state and can flow in the cooling box 8, when in use, the valve on the first conduit 11 is opened, the valve on the second conduit 12 is closed, and simultaneously the fourth air pump 43 is opened to transmit the middle-concentration nitrogen in the middle cavity to the cooling box 8, and the middle cavity is returned to the middle cavity after being cooled by the cooling box 8, so as to realize nitrogen cooling, which is suitable for higher external environment temperature, the natural gas leakage is used in a state with explosion risk, and the temperature of the middle body 2 is ensured to be lower.

Specifically, as shown in fig. 2, the gas processing box 16 is divided into a first processing chamber 21, a second processing chamber 22 and a third processing chamber 23, the first processing chamber 21 and the second processing chamber 22 are both provided with an installation chamber 25, the bottoms of the first processing chamber 21 and the third processing chamber 23 are both fixedly provided with a nitrogen generator 29, the installation chamber 25 is internally fixedly provided with a second air pump 26, the tops of the first processing chamber 21 and the third processing chamber 23 are both fixedly provided with an electronic extension tube 24, the second air pump 26 is communicated with the electronic extension tube 24, the second processing chamber 22 is internally fixedly provided with a third air pump 27, the third air pump 27 communicates the second processing chamber 22 with the first processing chamber 21 and the third processing chamber 23, the bottom of the second processing chamber 22 is provided with a natural gas pipe 28, and the natural gas pipe 28 is communicated with the guide pipe four 20.

It should be further explained that, in the present invention, the gas processing box 16 has two usage states, one of which is that the first processing chamber 21 in the present embodiment is correspondingly communicated with the high-concentration nitrogen chamber, and the third processing chamber 23 is correspondingly communicated with the low-concentration chamber, because the high-concentration nitrogen chamber is closest to the leakage end of the compression plunger 5, the leaked natural gas can directly enter the high-concentration nitrogen chamber, so that the natural gas is diluted, thereby preventing the natural gas from being exploded due to too high leakage concentration, and the gas processing box 16 functions to extract the gas in the high-concentration nitrogen chamber by the second air pump 26 on one side of the first processing chamber 21 when the natural gas leaked in the high-concentration nitrogen chamber is too much, specifically, the electronic extension tube 24 is firstly opened, so that the electronic extension tube 24 is connected with the communicating tube 17 at the bottom of the first processing chamber 21, and then the second air pump 26 is opened, so that the second air pump 26 sucks air in the communicating pipe 17, the pressure valve in the communicating pipe 17 is opened along with the increase of the pressure, and the gas in the high-concentration nitrogen cavity is pumped out, so that the natural gas and nitrogen mixed gas in the high-concentration nitrogen cavity enters the first processing chamber 21.

After the natural gas and nitrogen mixed gas enters the first processing cavity 21, standing for a period of time to wait for gravity settling of natural gas and nitrogen, the natural gas with higher density is at the bottom, and then starting the third air pump 27 to suck the natural gas deposited at the bottom of the first processing cavity 21 into the second processing cavity 22, so that the natural gas with relatively higher density is obtained in the second processing cavity 22, and when the natural gas content in the second processing cavity 22 is higher, the first air pump 18 can be started to suck the natural gas in the second processing cavity 22 through the fourth conduit 20 and then be filled into the compressor body 1 through the third conduit 19, so that recovery of the natural gas is completed, and waste of the natural gas is reduced.

Specifically, as shown in fig. 3, a cooling water through pipe 30 is fixedly arranged in the cooling box 8, a first water inlet pipe 31 and a first water outlet pipe 32 are welded at two ends of the top of the cooling water through pipe 30 respectively, the first water inlet pipe 31 and the first water outlet pipe 32 are communicated through a thin guide pipe 33, a blowing seat 34 is fixedly arranged at the top of the cooling box 8, a blowing groove is formed in the blowing seat 34, and a blowing fan 35 is installed in the blowing groove.

It is worth explaining the present invention further that, in the present invention, the cooling water in the cooling tank 8 is used for introducing cooling water through the cooling water passage 30, and the low-temperature cooling water is used for cooling the circulating medium-concentration nitrogen gas, when in use, the first water outlet pipe 32 is firstly blocked, and then sufficient cooling water is added into the cooling water through pipe 30 through the first water inlet pipe 31, so that the cooling water is filled with the cooling water through the cooling water passage 30 and the thin pipe 33, because the heat will rise continuously, the heat in the cooling water through pipe 30 will rise into the thin pipe 33, and at the same time, the blower fan 35 can be turned on to further dissipate the heat, thereby increasing the cooling effect.

Example 2

It should be further explained that, in the present invention, the compression cylinder 3 and the compressor body 1 are both components of the existing compressor, which is a mature existing technology, and the middle body 2 is installed between the compression cylinder 3 and the compressor body 1, the middle body 2 is divided into three cavities by the first partition plate 6 and the second partition plate 7 to form a multi-cavity structure, when in use, the three cavities are sequentially filled with high-concentration nitrogen, middle-concentration nitrogen and low-concentration nitrogen from left to right, the middle-concentration nitrogen in the middle cavity is in a circulating state and can flow in the heating box 9, when in use, the valve on the second conduit 12 is opened, the valve on the first conduit 11 is closed, and simultaneously the fourth air pump 43 is opened to convey the middle-concentration nitrogen in the middle cavity into the heating box 9, and the middle cavity is heated by the heating box 9 and then returned to the middle cavity, so as to realize nitrogen cooling, which is suitable for lower external environment temperature, the natural gas is possibly gathered due to poor nitrogen fluidity, and the natural gas is used in a state with explosion risk due to too high local natural gas concentration, so that the temperature of the intermediate body 2 is not too low.

It should be further explained that, in the present invention, the gas processing box 16 has two usage states, one is that the first processing chamber 21 in embodiment 1 is correspondingly communicated with the high concentration nitrogen chamber, the third processing chamber 23 is correspondingly communicated with the low concentration chamber, the other is that the first processing chamber 21 in this embodiment is correspondingly communicated with the low concentration chamber, the third processing chamber 23 is correspondingly communicated with the high concentration nitrogen chamber, the adjustment mode is that the whole gas processing box 16 is driven to rotate 180 degrees by opening the driving motor 15 to realize position adjustment, at this time, the low concentration nitrogen chamber in the low concentration nitrogen medium body 2 with reduced concentration caused by some natural gas entering in the original high concentration nitrogen can be controlled, the recovery of natural gas is the same as that in embodiment 1, the gas in the high concentration nitrogen chamber and the low concentration nitrogen chamber is pumped out by the second gas pump 26, the natural gas and nitrogen mixed gas in the high-concentration nitrogen cavity enters the first processing cavity 21, after the natural gas and nitrogen mixed gas enters the first processing cavity 21, the natural gas and nitrogen mixed gas can stand for a period of time to wait for gravity settling of natural gas and nitrogen, the natural gas with higher density is positioned at the bottom, and then the third air pump 27 is started to suck the natural gas deposited at the bottom of the first processing cavity 21 into the second processing cavity 22, so that the natural gas with relatively higher density is obtained in the second processing cavity 22, when the content of the natural gas in the second processing cavity 22 is higher, the first air pump 18 can be started to suck the natural gas in the second processing cavity 22 through the fourth conduit 20, and then the natural gas is filled into the compressor body 1 through the third conduit 19, so that the recovery of the natural gas is completed, and the waste of the natural gas is reduced.

Specifically referring to fig. 4, a hot water through pipe 36 is fixedly arranged in the heating tank 9, a water storage tank 37 and a water pump 41 are fixedly arranged at the top of the heating tank 9, a heating plate 39 is fixedly arranged at the bottom of the water storage tank 37, a water adding pipe 38 is arranged at the top of the water storage tank 37 in a penetrating manner, one end of the hot water through pipe 36 is communicated with the water storage tank 37 through a second water inlet pipe 40, the other end of the hot water through pipe 36 is communicated with the water pump 41, and the water pump 41 is.

It should be further explained that, in the present invention, the heating tank 9 is used in conjunction with the water storage tank 37, and a sufficient amount of water is added into the water storage tank 37, and then the water is heated by the heating plate 39, and then the hot water is driven by the water pump 41 to flow through the hot water pipe 36, so as to heat the nitrogen gas with medium concentration.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a natural gas compressor multi-chamber midbody, includes compressor body (1), midbody (2) and compression cylinder (3), its characterized in that: the middle body (2) is fixedly arranged between the compressor body (1) and the compression cylinder (3), a transmission shaft (4) of the compression cylinder (3) penetrates through one end of the middle body (2) extending into the compressor body (1) and is fixedly provided with a compression plunger (5), the middle body (2) is divided into three cavities through a first division plate (6) and a second division plate (7), a three-way pipe (10) and a return pipe (13) are arranged in the middle of the cavity in a penetrating manner, a fourth air pump (43) is fixedly arranged at the top of the middle cavity, an exhaust end of the fourth air pump (43) is communicated with the three-way pipe (10), a cooling box (8) and a heating box (9) are fixedly arranged at the top of the middle body (2), two ends of the three-way pipe (10) are respectively communicated with the cooling box (8) and the heating box (9), the return pipe (13) is respectively communicated with the cooling box (8) and the heating box (9) through a first conduit (11) and a second conduit (12), a communicating pipe (17) is arranged at the bottom of the cavity body positioned at two sides in a penetrating way, a pressure valve is arranged in the communicating pipe (17), a driving motor (15) is fixedly arranged at the bottom of the middle body (2), an output shaft of the driving motor (15) is provided with a gas processing box (16), a third guide pipe (19) penetrates through the bottom of the compressor body (1), a first air pump (18) is fixedly arranged at the bottom of the compressor body (1), one end of the first air pump (18) is communicated with the third conduit (19), the other end of the first air pump (18) is communicated with the gas treatment box (16) through the fourth conduit (20), the fourth conduit (20) is in rotary sealing connection with the gas treatment box (16).

2. The natural gas compressor multi-chamber middle body according to claim 1, wherein: the first guide pipe (11) and the second guide pipe (12) are provided with valves (14), the first partition plate (6) and the second partition plate (7) are provided with sealing boxes in a penetrating mode, and the transmission shaft (4) of the compression cylinder (3) is arranged in the sealing boxes in a penetrating mode.

3. The natural gas compressor multi-chamber middle body according to claim 1, wherein: separated for first process chamber (21), second process chamber (22) and third process chamber (23) in gas treatment case (16), first process chamber (21) with installation cavity (25) have all been seted up in second process chamber (22), first process chamber (21) with the equal fixed mounting in third process chamber (23) bottom has nitrogen generator (29).

4. The natural gas compressor multi-chamber middle body according to claim 3, wherein: a second air pump (26) is fixedly installed in the installation cavity (25), an electronic expansion pipe (24) is fixedly installed at the tops of the first treatment cavity (21) and the third treatment cavity (23), and the second air pump (26) is communicated with the electronic expansion pipe (24).

5. The natural gas compressor multi-chamber middle body according to claim 4, wherein: second treatment chamber (22) internal fixed mounting has third air pump (27), third air pump (27) will second treatment chamber (22) simultaneously with first treatment chamber (21) with third treatment chamber (23) intercommunication, second treatment chamber (22) bottom is provided with natural gas pipe (28), natural gas pipe (28) with pipe four (20) intercommunication.

6. The natural gas compressor multi-chamber middle body according to claim 1, wherein: the cooling box (8) internal fixation is provided with cooling water siphunculus (30), first inlet tube (31) and first outlet pipe (32) have been welded respectively to cooling water siphunculus (30) top both ends.

7. The natural gas compressor multi-chamber middle body according to claim 6, wherein: first inlet tube (31) with communicate through thin pipe (33) between first outlet pipe (32), cooler bin (8) top is fixed and is provided with blast seat (34), set up the blast groove in blast seat (34), install blast fan (35) in the blast groove.

8. The natural gas compressor multi-chamber middle body according to claim 1, wherein: heating cabinet (9) internal fixation is provided with hot water siphunculus (36), heating cabinet (9) top fixed mounting has storage water tank (37) and water pump (41), storage water tank (37) bottom fixed mounting has hot plate (39), filler pipe (38) are worn to be equipped with at storage water tank (37) top.

9. The natural gas compressor multi-chamber middle body according to claim 8, wherein: one end of the hot water through pipe (36) is communicated with the water storage tank (37) through a second water inlet pipe (40), the other end of the hot water through pipe (36) is communicated with the water pump (41), and the water pump (41) is communicated with the water storage tank (37) through a second water outlet pipe (42).