Waste gas heat energy recoverer of CNG compression device

Abstract

The utility model discloses a CNG compression device waste gas heat energy recoverer which comprises a support, an arc-shaped connecting rod is arranged on the upper surface of the support, the CNG compression device waste gas heat energy recoverer further comprises a shell, the shell is fixedly installed on the upper surface of the arc-shaped connecting rod arranged on the support, and the shell is connected with a nested heat exchange structure. According to the nested heat exchange structure, a heat exchange medium can flow on the outer surface of an inner pipe through an outer sleeve, so that the heat exchange effect is better, the nested heat exchange structure comprises a feeding box, the feeding box is fixedly installed on the upper surface of a support, and the side surface of the feeding box is connected with a medium feeding port in a penetrating mode; and the other side of the feeding box is connected with an outer sleeve. According to the waste gas heat energy recoverer of the CNG compression device, the nested heat exchange structure is arranged, waste gas in the inner pipe can make full contact with a heat exchange medium, and the heat exchange circulation structure is further arranged, so that the waste gas enters the shell through the communicating pipe and then further exchanges heat with the medium in the outer sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat energy recovery, in particular to a waste heat energy recovery device for a CNG compression device. Background Technique

[0002] Compressed natural gas, abbreviated as CNG, refers to gaseous natural gas compressed to a pressure greater than or equal to 10 MPa and not greater than 25 MPa. It is natural gas pressurized and stored in a container in a gaseous state. Waste heat is the energy that has not been utilized in energy utilization equipment, including waste heat from high-temperature exhaust gas, waste heat from cooling media, waste heat from waste steam and wastewater, etc.

[0003] There are problems such as low thermal energy utilization rate, high smoke exhaust temperature, and unutilized waste heat of flue gas in natural gas compressors. The overall thermal energy utilization rate of natural gas compressors is relatively low, the smoke exhaust temperature is relatively high, and the direct discharge of high-temperature flue gas causes a large amount of waste of thermal energy and also brings environmental pollution. Content of the Utility Model

[0004] The purpose of the utility model is to provide a waste heat energy recovery device for a CNG compression device to solve the problem of a large amount of waste of thermal energy caused by the unutilized waste heat of high-temperature flue gas proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A waste heat energy recovery device for a CNG compression device, including a bracket, on the upper surface of which an arc-shaped connecting rod is provided. It is characterized in that: it further includes a housing, the housing is fixedly installed on the upper surface of the arc-shaped connecting rod provided by the bracket, the housing is connected with a nested heat exchange structure, and the nested heat exchange structure can make the heat exchange medium flow on the outer surface of the inner tube through the outer sleeve tube, so that the heat exchange effect is better.

[0006] Preferably, the nested heat exchange structure includes a feed box, the feed box is fixedly installed on the upper surface of the bracket, a medium feed port is connected through the side surface of the feed box, the other side of the feed box is connected with an outer sleeve tube, an inner tube is nestedly installed inside the outer sleeve tube, one end of the inner tube penetrates through the front surface of the feed box, and the inner tube is connected with an exhaust gas feed port. The inner tube and the outer sleeve tube are nested and spirally installed inside the housing.

[0007] By adopting the above technical solution, the exhaust gas and the medium enter the inner tube and the outer sleeve tube respectively through the feed box.

[0008] Preferably, the housing is further connected with a heat exchange circulation structure, and the heat exchange circulation structure can make the exhaust gas enter the inside of the housing through the communication pipe and reuse the thermal energy through the outside of the outer sleeve tube.

[0009] By adopting the above technical solution, the exhaust gas can be efficiently utilized.

[0010] Preferably, the heat exchange cycle structure includes a circulation tank, which is installed on the side surface of the bracket, and one end of the circulation tank is connected to the outer sleeve pipe in a through manner. One end of the circulation tank is connected to the inner pipe in a through manner. A communication pipe is connected to the back surface of the circulation tank through the inner pipe, and the other end of the communication pipe is installed on the back surface of the housing in a through manner. A temperature sensor I is installed on the bottom surface of the inner wall of the circulation tank, and a discharge port I is installed on the side surface of the circulation tank.

[0011] With the above technical solution, the waste gas in the inner pipe enters the housing for re - heat exchange and utilization.

[0012] Preferably, the communication pipe is arranged in a C - shaped structure.

[0013] With the above technical solution, it is convenient for the waste gas to enter the housing.

[0014] Preferably, a temperature sensor II is installed on the inner wall surface of the housing.

[0015] With the above technical solution, the temperature of the waste gas inside the housing can be detected.

[0016] Preferably, a discharge port II is arranged on the front surface of the housing.

[0017] With the above technical solution, it is convenient for the heat - exchange medium to flow.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: This waste heat energy recovery device for CNG compression device:

[0019] 1. When this waste heat energy recovery device for CNG compression device is in use, first, the heat - exchange medium enters the inside of the feed tank through the medium feed port installed on the side surface of the feed tank. At the same time, the waste gas will directly enter the inner pipe through the waste gas feed port. Then, the heat - exchange medium enters the outer sleeve pipe through the feed tank, which is convenient for heat exchange and makes the heat - exchange efficiency higher.

[0020] 2. Further, the heat - exchange medium flows on the outer surface of the inner pipe through the outer sleeve pipe. The inner pipe and the outer sleeve pipe are nested and spirally installed inside the housing, so that the heat - exchange contact area is wider and the heat - exchange effect is better.

[0021] 3. Further, the waste gas will directly enter the inside of the housing through the communication pipe connected to the other end of the inner pipe, so that the waste gas is further utilized to exchange heat with the heat - exchange medium on the outer surface of the outer sleeve pipe, making the utilization efficiency of waste heat energy higher and the heat - exchange efficiency higher. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the axonometric surface structure of the present utility model;

[0023] Figure 2Schematic diagram of the rear view surface structure of the present utility model;

[0024] Figure 3 Schematic diagram of the front sectional structure of the feed box of the present utility model;

[0025] Figure 4 Schematic diagram of the top sectional structure of the outer shell of the present utility model;

[0026] Figure 5 Schematic diagram of the side sectional structure of the present utility model;

[0027] Figure 6 Schematic diagram of the top view surface structure of the outer sleeve pipe of the present utility model.

[0028] In the figure: 1, support; 2, outer shell; 3, feed box; 4, waste gas feed port; 5, medium feed port; 6, inner pipe; 7, outer sleeve pipe; 8, circulation box; 9, temperature sensor 1; 10, discharge port 1; 11, connecting pipe; 12, temperature sensor 2; 13, discharge port 2. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-6 , the present utility model provides a technical solution: a waste heat energy recovery device for a CNG compression device, including a support 1, an outer shell 2, a feed box 3, a waste gas feed port 4, a medium feed port 5, an inner pipe 6, an outer sleeve pipe 7, a circulation box 8, a temperature sensor 1 9, a discharge port 1 10, a connecting pipe 11, a temperature sensor 2 12, and a discharge port 2 13.

[0031] Embodiment 1: The waste heat energy recovery device for the CNG compression device is provided with a nested heat exchange structure, so that the heat exchange medium is in full contact with the outer surface of the inner pipe 6, improving the heat energy utilization efficiency. Specifically:

[0032] The upper surface of the bracket 1 is provided with an arc-shaped connecting rod. It also includes a housing 2, and the housing 2 is fixedly installed on the upper surface of the arc-shaped connecting rod provided on the bracket 1. The housing 2 is connected with a nested heat exchange structure. The nested heat exchange structure can make the heat exchange medium flow on the outer surface of the inner tube 6 through the outer tube 7, so that the heat exchange effect is better. The nested heat exchange structure includes a feed box 3, and the feed box 3 is fixedly installed on the upper surface of the bracket 1. A medium feed port 5 is connected through the side surface of the feed box 3. The other side of the feed box 3 is connected with an outer tube 7. An inner tube 6 is installed in the outer tube 7 in a nested manner. One end of the inner tube 6 penetrates the front surface of the feed box 3, and the inner tube 6 is connected with an exhaust gas feed port 4. The inner tube 6 and the outer tube 7 are installed in a nested and spiral manner inside the housing 2;

[0033] When the waste heat recovery device of the CNG compression device is in use, as Figure 1 shown, first connect the connection port for discharging high-temperature exhaust gas of the CNG compression device with the exhaust gas feed port 4 on the front surface of the feed box 3 on the upper surface of the bracket 1. As Figure 3 shown, make the exhaust gas directly enter the inside of the inner tube 6 through the exhaust gas feed port 4. At the same time, connect the medium feed port 5 on the side surface of the feed box 3 with the heat exchange medium, so that the heat exchange medium enters the feed box 3 through the medium feed port 5. Then the heat exchange medium will enter the outer tube 7. The outer tube 7 is nested outside the inner tube 6, so that the heat exchange medium flows on the outer surface of the inner tube 6. The exhaust gas inside the inner tube 6 will be in full contact with the heat exchange medium, so that the heat is quickly conducted, so that the heat exchange medium can be quickly heated up, and the heat exchange efficiency is higher.

[0034] Embodiment 2: The waste heat recovery device of the CNG compression device is also provided with a heat exchange cycle structure to further utilize the exhaust gas when it enters the housing 2. Specifically:

[0035] The housing 2 is also connected with a heat exchange cycle structure. The heat exchange cycle structure can make the exhaust gas enter the inside of the housing 2 through the outside of the outer tube 7 through the connecting pipe 11 to reuse the heat energy. The heat exchange cycle structure includes a circulation box 8. The circulation box 8 is installed on the side surface of the bracket 1, and the side surface of the circulation box 8 is connected through with one end of the outer tube 7. The rear surface of the circulation box 8 is connected through with one end of the inner tube 6. The rear surface of the circulation box 8 is connected with a connecting pipe 11 through the inner tube 6, and the other end of the connecting pipe 11 is installed through the rear surface of the housing 2. A temperature sensor 1 9 is installed on the bottom surface of the inner wall of the circulation box 8. A discharge port 1 10 is installed on the side surface of the circulation box 8. The connecting pipe 11 is set as a C-shaped structure. A temperature sensor 2 12 is installed on the inner wall surface of the housing 2. A discharge port 2 13 is provided on the front surface of the housing 2.

[0036] Furthermore, as Figure 4As shown, the heat-exchanging medium will enter the interior of the circulation tank 8 through the other end of the outer sleeve 7, and then the temperature sensor 1 installed on the bottom surface of the inner wall of the circulation tank 8 can sense the temperature of the heat-exchanging medium. The medium flows out through the discharge port 1 on the side surface of the circulation tank 8, and the medium continuously flows for heat exchange. At the same time, the inner tube 6 will penetrate the rear surface of the circulation tank 8 and be connected to the connecting pipe 11, as Figure 5 shown, the other end of the connecting pipe 11 is installed through the rear surface of the outer shell 2. The waste gas inside the inner tube 6 will enter the interior of the outer shell 2 through the C-shaped connecting pipe 11, so that the waste heat of the waste gas exchanges heat with the medium through the outer surface of the outer sleeve 7 inside the outer shell 2, improving the heat exchange efficiency and enabling better utilization of the waste heat of the waste gas. Finally, the waste gas will be discharged through the discharge port 2 13 provided on the front surface of the outer shell 2, and other equipment is connected through the discharge port 2 13 to treat the waste gas and reduce the emission pollution.

[0037] Working principle: When using this waste heat recovery device for CNG compression equipment, a nested heat exchange structure is provided, which can make the heat-exchanging medium fully contact with the inner tube 6 through the outer sleeve 7, resulting in better heat exchange effect. A heat exchange circulation structure is also provided, which can further exchange heat with the medium inside the outer sleeve 7 after the waste gas enters the interior of the outer shell 2, increasing the overall practicality.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. CNG compression device waste heat energy recovery device, including a bracket (1), the upper surface of the bracket (1) is provided with an arc-shaped connecting rod, characterized in that: It further includes a housing (2), the housing (2) is fixedly installed on the upper surface of the arc-shaped connecting rod provided on the bracket (1), the housing (2) is connected with a nested heat exchange structure, and the nested heat exchange structure can enable the heat exchange medium to flow on the outer surface of the inner tube (6) through the outer tube (7) to achieve better heat exchange effect; the nested heat exchange structure includes a feed box (3), the feed box (3) is fixedly installed on the upper surface of the bracket (1), a medium feed port (5) is connected through the side surface of the feed box (3), the other side of the feed box (3) is connected with an outer tube (7), the inner tube (6) is nestedly installed inside the outer tube (7), one end of the inner tube (6) penetrates through the front surface of the feed box (3), and the inner tube (6) is connected with an exhaust gas feed port (4), and the inner tube (6) and the outer tube (7) are nestedly and spirally installed inside the housing (2).

2. The CNG compression device waste heat energy recovery device according to claim 1, characterized in that: The housing (2) is further connected with a heat exchange circulation structure, and the heat exchange circulation structure can enable the exhaust gas to enter the inside of the housing (2) through the connecting pipe (11) to reuse the heat energy on the outside of the outer tube (7).

3. The waste heat energy recovery device for the CNG compression device according to claim 2, wherein: The heat exchange circulation structure includes a circulation box (8), the circulation box (8) is installed on the side surface of the bracket (1), and the side surface of the circulation box (8) is connected through with one end of the outer tube (7), the rear surface of the circulation box (8) is connected through with one end of the inner tube (6), the rear surface of the circulation box (8) is connected with a connecting pipe (11) through the inner tube (6), and the other end of the connecting pipe (11) is installed through the rear surface of the housing (2), a temperature sensor one (9) is installed on the bottom surface of the inner wall of the circulation box (8), and a discharge port one (10) is installed on the side surface of the circulation box (8).

4. The CNG compression device waste heat energy recovery device according to claim 3, characterized in that: The connecting pipe (11) is arranged in a C-shaped structure.

5. The CNG compression device waste heat energy recovery device according to claim 1, characterized in that: A temperature sensor two (12) is installed on the inner wall surface of the housing (2).

6. The CNG compression device waste heat energy recovery device according to claim 1, characterized in that: A discharge port two (13) is arranged on the front surface of the housing (2).

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