An ammonia compressor

Abstract

The utility model relates to a technical field of chemical equipment, concretely relates to a kind of ammonia compressor, including driving motor, compression mechanism and steam power mechanism;The both ends of driving motor are equipped with power shaft, and compression mechanism and steam power mechanism are respectively connected with the power shaft transmission of the both ends of driving motor;Compression mechanism is communicated with first gas source, and first gas source is used to deliver low-temperature low-pressure ammonia to compression mechanism, and compression mechanism is used to compress ammonia;Steam power mechanism is communicated with second gas source, for delivering high-temperature high-pressure steam to steam power mechanism, and steam power mechanism is used to convert steam into mechanical energy and transfer to driving motor.The ammonia compressor provided by the utility model effectively reduces the energy consumption required by the output of driving motor, thereby effectively reducing the energy consumption required during the production of the entire ammonia compressor, and also enables the integration of the entire ammonia compressor to be higher.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to an ammonia compressor. Background Technology

[0002] Ammonia compressors are a key production equipment commonly used in the chemical industry and are widely applied.

[0003] Currently, traditional ammonia compressors have a low-speed shaft and a high-speed shaft. The output shaft of the drive motor is connected to the low-speed shaft, and the high-speed shaft is connected to the main shaft of the ammonia compression structure. The high-speed and low-speed shafts are connected by a meshing gear. Six to eight centrifugal impellers are installed in series on the main shaft. The high-speed rotation and compression of the ammonia through these multi-stage impellers achieves pressurization. However, by using this method to ensure that the energy required for the ammonia compression process is independently supplied by the drive motor, the energy consumption of the drive motor becomes relatively high. Utility Model Content

[0004] (I) The technical problem solved by this utility model is: the energy required for the work done by the existing ammonia compressor in the process of compressing ammonia is provided independently by the drive motor, which leads to the technical problem of high energy consumption of the drive motor.

[0005] (II) Technical Solution To solve the above-mentioned technical problems, embodiments of this utility model provide an ammonia compressor, including a drive motor, a compression mechanism, and a steam power mechanism; The drive motor has power shafts at both ends, and the compression mechanism and the steam power mechanism are respectively connected to the power shafts at both ends of the drive motor. The compression mechanism is connected to a first gas source, which is used to supply low-temperature and low-pressure ammonia to the compression mechanism, and the compression mechanism is used to compress the ammonia. The steam power mechanism is connected to the second gas source, and the steam power mechanism is used to supply high-temperature and high-pressure steam to the steam power mechanism. The steam power mechanism is used to convert the steam into mechanical energy and transmit it to the drive motor.

[0006] Furthermore, the compression mechanism includes a first main shaft, a first low-speed gear, and a compression assembly; The first main shaft is connected to the power shaft via a first coupling. The first low-speed gear is sleeved on the outside of the first main shaft. The first low-speed gear can drive the first main shaft to rotate synchronously. The two sets of compression components are respectively located on both sides of the first low-speed gear along its own radial direction.

[0007] Furthermore, the compression assembly includes a first high-speed gear, a first drive shaft, and a centrifugal impeller; Two first high-speed gears are arranged symmetrically along the radial direction of the first low-speed gear. The first high-speed gears are meshed with the first low-speed gears respectively. The first high-speed gears are sleeved on the outside of the first transmission shaft. The first high-speed gears can drive the first transmission shaft to rotate synchronously. Each end of the first transmission shaft is provided with the centrifugal impeller.

[0008] Furthermore, the compression mechanism also includes a first housing, on the inner side wall of which a first bearing and a second bearing are installed. The first main shaft is rotatably mounted on the first bearing, and the first transmission shaft is rotatably mounted on the second bearing.

[0009] Furthermore, the steam power mechanism includes a second main shaft, a second low-speed gear, and a steam power assembly; The second main shaft is connected to the power shaft via a second coupling. The second low-speed gear is sleeved on the outside of the second main shaft and can drive the second main shaft to rotate synchronously. The steam power assembly is meshed with the second low-speed gear.

[0010] Furthermore, the steam power assembly includes a second high-speed gear, a second drive shaft, and a radial impeller; The second high-speed gear meshes with the second low-speed gear. The second high-speed gear is sleeved on the outside of the second transmission shaft. The second high-speed gear can drive the second transmission shaft to rotate synchronously. The two ends of the second transmission shaft are respectively provided with the radial impeller.

[0011] Furthermore, the steam power mechanism also includes a second housing, on the inner sidewall of which a third bearing and a fourth bearing are installed. The second main shaft is rotatably mounted on the third bearing, and the second transmission shaft is rotatably mounted on the fourth bearing.

[0012] Furthermore, both the centrifugal impeller and the radial impeller are fitted with gas collecting sealing covers on their outer sides.

[0013] Furthermore, the first gas source includes an ammonia cooler, and the second gas source includes a boiler; The ammonia cooler is connected to the two centrifugal impellers located on the same side of the first drive shafts via a first pipeline, and the ammonia cooler is used to supply ammonia gas to the centrifugal impellers; The boiler is connected to the radial impeller on one side of the second drive shaft via a second pipeline. The steam generated by the boiler is used in the plant and the excess steam is transported to the radial impeller.

[0014] Furthermore, there are two of each of the first bearing, the second bearing, the third bearing, and the fourth bearing.

[0015] The beneficial effects of this utility model are: This utility model provides an ammonia compressor, including a drive motor, a compression mechanism, and a steam power mechanism. The drive motor's power shaft has a compression mechanism and a steam power mechanism at its two ends along its length, respectively. The compression mechanism and the steam power mechanism are connected to an evaporator and are also connected to the drive shaft for transmission. The compression mechanism compresses the ammonia gas produced by the evaporator to meet the usage requirements. At the same time, the steam power mechanism converts the steam produced by the evaporator into mechanical energy and transmits it to the drive motor to compensate for the drive motor's power consumption. This ensures that the power output of the drive motor is the power required by the compression mechanism to compress the ammonia gas minus the power compensated by the steam power mechanism. This effectively reduces the energy consumption required for the drive motor's output, thereby effectively reducing the energy consumption required for the entire ammonia compressor's production, improving the operating efficiency of the ammonia compressor, and also increasing the integration of the entire ammonia compressor. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an ammonia compressor provided in an embodiment of this utility model.

[0018] icon: 100 - Drive motor; 101 - Power shaft; 102 - First coupling; 103 - Second coupling; 200 - Compression mechanism; 201 - First main shaft; 202 - First low-speed gear; 203 - First high-speed gear; 204 - First drive shaft; 205 - Centrifugal impeller; 206 - First housing; 207 - First bearing; 208 - Second bearing; 300 - Steam power mechanism; 301 - Second main shaft; 302 - Second low-speed gear; 303 - Second high-speed gear; 304 - Second drive shaft; 305 - Radial impeller; 306 - Second housing; 307 - Third bearing; 308 - Fourth bearing. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] Example 1 like Figure 1 As shown, this utility model provides an ammonia compressor, including a drive motor 100, a compression mechanism 200, and a steam power mechanism 300; The drive motor 100 has power shafts 101 at both ends, and the compression mechanism 200 and the steam power mechanism 300 are respectively connected to the power shafts 101 at both ends of the drive motor 100. The compression mechanism 200 is connected to the first gas source, which is used to supply low-temperature and low-pressure ammonia to the compression mechanism 200, and the compression mechanism 200 is used to compress the ammonia. The steam power mechanism 300 is connected to the second gas source and is used to supply high-temperature and high-pressure steam to the steam power mechanism 300. The steam power mechanism 300 is used to convert steam into mechanical energy and transmit it to the drive motor 100.

[0023] In this embodiment, the ammonia compressor includes a drive motor 100, a compression mechanism 200, and a steam power mechanism 300. The drive shaft 101 of the drive motor 100 has the compression mechanism 200 and the steam power mechanism 300 respectively located at both ends along its length. The compression mechanism 200 and the steam power mechanism 300 are respectively connected to the evaporator and are also connected to the drive shaft 101 for transmission. The compression mechanism 200 compresses the ammonia gas generated by the evaporator to meet usage requirements. Simultaneously, the steam power mechanism 300 converts the steam generated by the evaporator into mechanical energy and transmits it to the drive motor 100, compensating for the power consumption of the drive motor 100. This ensures that the power output of the drive motor 100 is equal to the power required by the compression mechanism 200 to compress the ammonia gas minus the power compensated by the steam power mechanism 300. This effectively reduces the energy consumption required for the output of the drive motor 100, thereby effectively reducing the energy consumption required for the entire ammonia compressor's production, improving the operating efficiency of the ammonia compressor, and also increasing the overall integration of the ammonia compressor.

[0024] The drive motor 100 can be a fixed-frequency motor or a variable-frequency motor. Preferably, a variable-frequency motor is selected, so that the load of the ammonia compressor can be adjusted by adjusting the speed of the drive motor 100 to meet the needs of different working conditions, thereby achieving greater energy savings.

[0025] According to one embodiment provided by this utility model, such as Figure 1 As shown, the compression mechanism 200 includes a first main shaft 201, a first low-speed gear 202, and a compression assembly; The first main shaft 201 is connected to the power shaft 101 via the first coupling 102. The first low-speed gear 202 is sleeved on the outside of the first main shaft 201. The first low-speed gear 202 can drive the first main shaft 201 to rotate synchronously. Two sets of compression components are respectively located on both sides of the first low-speed gear 202 along its own radial direction.

[0026] Furthermore, the compression assembly includes a first high-speed gear 203, a first drive shaft 204, and a centrifugal impeller 205; Two first high-speed gears 203 are arranged symmetrically along the radial direction of the first low-speed gear 202. The first high-speed gears 203 are meshed with the first low-speed gears 202 respectively. The first high-speed gears 203 are sleeved on the outside of the first drive shaft 204. The first high-speed gears 203 can drive the first drive shaft 204 to rotate synchronously. Centrifugal impellers 205 are provided at both ends of each first drive shaft 204.

[0027] In this embodiment, one end of the drive shaft 101 of the drive motor 100 along its own length is connected to the first main shaft 201 via a first coupling 102. A first low-speed gear 202 is installed on the first main shaft 201, that is, the first low-speed gear 202 is sleeved on the outside of the first main shaft 201. The first main shaft 201 and the first low-speed gear 202 together constitute a low-speed rotor. Next, a first high-speed gear 203 is installed on each of the two first drive shafts 204. Centrifugal impellers 205 are installed at both ends of each first drive shaft 204. A total of four centrifugal impellers 205 are assembled on the two first drive shafts 204. The first low-speed gear 202 and the first high-speed gear 203 together form a gear transmission pair. The gear ratio of the first low-speed gear 202 and the first high-speed gear 203 is adjusted so that each centrifugal impeller 205 can obtain the optimal operating speed. The centrifugal impeller 205 and the first drive shaft 204 are installed together to form a high-speed rotor. The power shaft 101 outputs the power of the drive motor 100 to the first main shaft 201 through the first coupling 102 and drives it to rotate. Then, it transmits the power to the two first high-speed gears 203 through the first low-speed gear 202 and drives them to rotate synchronously. This drives the two first drive shafts 204 to rotate synchronously and realizes the four centrifugal impellers 205 on both sides of the two first drive shafts 204 to compress the ammonia gas in stages, so as to pressurize the ammonia gas and obtain the required compressed ammonia gas.

[0028] Of course, compared to the traditional single-shaft configuration of ammonia compressors, this design effectively reduces the number of centrifugal impellers 205 used, thereby significantly lowering the production cost of the ammonia compressor provided in this embodiment. Simultaneously, by setting the gear ratio between the first low-speed gear 202 and the first high-speed gear 203, as well as the rotational speed of the drive motor 100, the centrifugal impeller 205 can achieve optimal operating speed, thereby improving the efficiency of the ammonia compressor in compressing ammonia.

[0029] According to one embodiment provided by this utility model, such as Figure 1 As shown, the compression mechanism 200 also includes a first housing 206, on which a first bearing 207 and a second bearing 208 are installed on the inner sidewall of the first housing 206. The first main shaft 201 is rotatably mounted on the first bearing 207, and the first transmission shaft 204 is rotatably mounted on the second bearing 208.

[0030] In this embodiment, the first bearing 207 and the second bearing 208 are both installed on the inner side wall of the first housing 206. The first bearing 207 supports the first main shaft 201, and the second bearing 208 supports the first transmission shaft 204, thereby ensuring that the first main shaft 201 and the first transmission shaft 204 can rotate smoothly. Of course, preferably, there are two of each of the first bearing 207 and the second bearing 208, with the first bearing 207 arranged at intervals along the length direction of the first main shaft 201 and the second bearing 208 arranged at intervals along the length direction of the first transmission shaft 204.

[0031] By setting the first bearing 207 and the second bearing 208, not only can the first main shaft 201 and the first transmission shaft 204 be supported, but the coefficient of friction can also be effectively reduced, the frictional heat generation can be greatly reduced, and the risk of shaft seizure or damage due to overheating can be avoided, thereby improving the service life of the ammonia compressor provided in this embodiment.

[0032] According to one embodiment provided by this utility model, such as Figure 1 As shown, the steam power mechanism 300 includes a second main shaft 301, a second low-speed gear 302, and a steam power assembly; The second main shaft 301 is connected to the power shaft 101 via the second coupling 103. The second low-speed gear 302 is sleeved on the outside of the second main shaft 301. The second low-speed gear 302 can drive the second main shaft 301 to rotate synchronously. The steam power assembly is meshed with the second low-speed gear 302.

[0033] Furthermore, the steam power assembly includes a second high-speed gear 303, a second drive shaft 304, and a radial impeller 305; The second high-speed gear 303 meshes with the second low-speed gear 302. The second high-speed gear 303 is sleeved on the outside of the second transmission shaft 304. The second high-speed gear 303 can drive the second transmission shaft 304 to rotate synchronously. The two ends of the second transmission shaft 304 are respectively provided with radial impellers 305.

[0034] In this embodiment, the second main shaft 301 is connected to the other end of the drive shaft 101 of the drive motor 100, which is opposite to the first main shaft 201 along its own length direction, via a second coupling 103. A second low-speed gear 302 is installed on the second main shaft 301, and the second main shaft 301 and the second low-speed gear 302 together constitute a low-speed rotor. Next, a second high-speed gear 303 is installed on the second transmission shaft 304, i.e., the second high-speed gear 303 is sleeved on the outside of the second transmission shaft 304. A radial impeller 305 is installed at both ends of the second transmission shaft 304. The second low-speed gear 302 and the second high-speed gear 303 together form a gear transmission pair. By setting the gear ratio of the second low-speed gear 302 and the second high-speed gear 303, the radial impeller 305 obtains the optimal operating speed. The radial impeller 305 and the second transmission shaft 304 are installed together to form a high-speed rotor. The evaporator generates excess high-temperature, high-pressure steam, which enters the steam power mechanism 300 and drives two centripetal impellers 305 to rotate and perform work. The work done by the high-speed rotor (second drive shaft 304 and second high-speed gear 303) is then transmitted to the low-speed rotor (second main shaft 301 and second low-speed gear 302) through a gear transmission pair. Since the second main shaft 301 is connected to the end of the drive motor 100's power shaft 101 relative to the first main shaft 201 via the second coupling 103, the work done by the high-temperature, high-pressure steam recovered by the steam power mechanism 300 can be compensated by the drive motor 100 for the work required by the compression mechanism 200 to compress ammonia. This makes the power output by the drive motor 100 equal to the compression power required by the compression mechanism 200 to compress ammonia minus the power compensated by the steam power mechanism 300, thereby greatly reducing the energy consumption of the ammonia compressor and improving its operating efficiency.

[0035] According to one embodiment provided by this utility model, such as Figure 1 As shown, the steam power mechanism 300 also includes a second housing 306. A third bearing 307 and a fourth bearing 308 are installed on the inner side wall of the second housing 306. The second main shaft 301 is rotatably mounted on the third bearing 307, and the second transmission shaft 304 is rotatably mounted on the fourth bearing 308.

[0036] In this embodiment, the third bearing 307 and the fourth bearing 308 are both installed on the inner side wall of the second housing 306. The third bearing 307 supports the second main shaft 301, and the fourth bearing 308 supports the second transmission shaft 304, thereby ensuring that the second main shaft 301 and the second transmission shaft 304 can rotate smoothly. Of course, preferably, there are two of each of the third bearing 307 and the fourth bearing 308, with the third bearing 307 spaced apart along the length of the second main shaft 301 and the fourth bearing 308 spaced apart along the length of the second transmission shaft 304.

[0037] The effect of setting the third bearing 307 and the fourth bearing 308 is the same as the effect of setting the first bearing 207 and the second bearing 208. The specific structure and working principle of the first bearing 207, the second bearing 208, the third bearing 307 and the fourth bearing 308 are all existing technologies, so they will not be described in detail.

[0038] According to one embodiment provided by this utility model, such as Figure 1 As shown, both the centrifugal impeller 205 and the radial impeller 305 are fitted with gas collecting sealing covers on their outer sides.

[0039] In this embodiment, in order to ensure that the ammonia and steam connected to the centrifugal impeller 205 and the centripetal impeller 305 can be fully utilized, a gas collecting sealing cover is provided on the outside of the centrifugal impeller 205 and the centripetal impeller 305, and is connected to the evaporator respectively, so that point-to-point connection can be formed, and the gas will not diffuse and be wasted in the middle, and will not be affected by cross-interference caused by other airflows in the process.

[0040] According to one embodiment provided by this utility model, such as Figure 1 As shown, the first gas source includes an ammonia cooler, and the second gas source includes a boiler; The ammonia cooler is connected to the centrifugal impellers 205 located on the same side of the two first drive shafts 204 through the first pipeline. The ammonia cooler is used to supply ammonia gas to the centrifugal impellers 205. The boiler is connected to the radial impeller 305 on one side of the second drive shaft 304 via a second pipeline. The steam generated by the boiler is used in the plant and the excess steam is transported to the radial impeller 305.

[0041] In this embodiment, the ammonia cooler in the plant serves as the first gas source and is connected to two centrifugal impellers 205 located on the same side of the first drive shafts 204 via first pipelines. This delivers the generated low-temperature, low-pressure ammonia gas to the centrifugal impellers 205. The centrifugal impellers 205 compress the ammonia gas through a transmission mechanism, and the compressed ammonia gas is then output from the centrifugal impeller 205 on the other side of the first drive shaft 204 to the corresponding usage location or container, ensuring that the ammonia gas meets the required compression standards. The boiler serves as the second gas source in the plant and is connected to a radial impeller 305 on one side of the second drive shaft 304 via a second pipeline. In the chemical plant, the boiler is a steam boiler. The steam generated by the boiler can be used for the daily operation of the plant. The surplus steam is sent to the centripetal impeller 305. The steam injection drives the steam impeller to rotate, and then the mechanical energy generated is transmitted to the compression mechanism 200 drive motor 100 through transmission. This is used by the compression mechanism 200 to output work when compressing ammonia, which can effectively reduce the output power of the drive motor 100 and significantly save energy consumption when compressing ammonia. The surplus steam generated by the boiler can also be used to avoid waste. The steam after use can be directly discharged through the centripetal impeller 305 on the other side.

[0042] Since both the centrifugal impeller 205 and the radial impeller 305 are equipped with gas-collecting sealing covers on their outer sides, the effective utilization of gas can be ensured, and resource waste can be eliminated. Of course, ammonia coolers and boilers are existing technologies, and their specific working principles and processes are also existing technologies, so they will not be described in detail here.

[0043] According to one embodiment provided by this utility model, such as Figure 1 As shown, there are two of each of the first bearing 207, the second bearing 208, the third bearing 307, and the fourth bearing 308.

[0044] In this embodiment, by setting two first bearings 207, two second bearings 208, two third bearings 307 and two fourth bearings 308 respectively, the support effect for the first spindle 201, the second spindle 301, the first transmission shaft 204 and the second transmission shaft 304 can be ensured, thereby ensuring the stability and smoothness of their rotation during use.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ammonia compressor, characterized in that, It includes a drive motor (100), a compression mechanism (200), and a steam power mechanism (300). The drive motor (100) has power shafts (101) at both ends, and the compression mechanism (200) and the steam power mechanism (300) are respectively connected to the power shafts (101) at both ends of the drive motor (100). The compression mechanism (200) is connected to a first gas source, which is used to supply low-temperature and low-pressure ammonia to the compression mechanism (200), and the compression mechanism (200) is used to compress the ammonia. The steam power mechanism (300) is connected to the second gas source, and is used to supply high-temperature and high-pressure steam to the steam power mechanism (300). The steam power mechanism (300) is used to convert the steam into mechanical energy and transmit it to the drive motor (100).

2. The ammonia compressor according to claim 1, characterized in that, The compression mechanism (200) includes a first main shaft (201), a first low-speed gear (202), and a compression assembly; The first main shaft (201) is connected to the power shaft (101) via the first coupling (102). The first low-speed gear (202) is sleeved on the outside of the first main shaft (201). The first low-speed gear (202) can drive the first main shaft (201) to rotate synchronously. The two sets of compression components are respectively located on both sides of the first low-speed gear (202) along its own radial direction.

3. The ammonia compressor according to claim 2, characterized in that, The compression assembly includes a first high-speed gear (203), a first drive shaft (204), and a centrifugal impeller (205). Two first high-speed gears (203) are arranged symmetrically along the radial direction of the first low-speed gear (202). The first high-speed gears (203) are meshed with the first low-speed gears (202) respectively. The first high-speed gears (203) are sleeved on the outside of the first transmission shaft (204). The first high-speed gears (203) can drive the first transmission shaft (204) to rotate synchronously. The centrifugal impellers (205) are respectively provided at both ends of each first transmission shaft (204).

4. The ammonia compressor according to claim 3, characterized in that, The compression mechanism (200) further includes a first housing (206), on the inner side wall of the first housing (206) a first bearing (207) and a second bearing (208), the first main shaft (201) is rotatably mounted on the first bearing (207), and the first transmission shaft (204) is rotatably mounted on the second bearing (208).

5. The ammonia compressor according to claim 4, characterized in that, The steam power mechanism (300) includes a second main shaft (301), a second low-speed gear (302), and a steam power assembly; The second main shaft (301) is connected to the power shaft (101) via the second coupling (103). The second low-speed gear (302) is sleeved on the outside of the second main shaft (301). The second low-speed gear (302) can drive the second main shaft (301) to rotate synchronously. The steam power assembly is meshed with the second low-speed gear (302).

6. The ammonia compressor according to claim 5, characterized in that, The steam power assembly includes a second high-speed gear (303), a second drive shaft (304), and a radial impeller (305). The second high-speed gear (303) meshes with the second low-speed gear (302). The second high-speed gear (303) is sleeved on the outside of the second transmission shaft (304). The second high-speed gear (303) can drive the second transmission shaft (304) to rotate synchronously. The two ends of the second transmission shaft (304) are respectively provided with the radial impeller (305).

7. The ammonia compressor according to claim 6, characterized in that, The steam power mechanism (300) also includes a second housing (306), on which a third bearing (307) and a fourth bearing (308) are installed on the inner sidewall of the second housing (306). The second main shaft (301) is rotatably mounted on the third bearing (307), and the second transmission shaft (304) is rotatably mounted on the fourth bearing (308).

8. The ammonia compressor according to claim 7, characterized in that, Both the centrifugal impeller (205) and the radial impeller (305) are fitted with gas collecting sealing covers on their outer sides.

9. The ammonia compressor according to claim 8, characterized in that, The first gas source includes an ammonia cooler, and the second gas source includes a boiler; The ammonia cooler is connected to the centrifugal impellers (205) located on the same side of the two first drive shafts (204) via the first pipeline, and the ammonia cooler is used to supply ammonia gas to the centrifugal impellers (205); The boiler is connected to the centripetal impeller (305) on one side of the second drive shaft (304) via a second pipeline. The steam generated by the boiler is used in the plant and the excess steam is transported to the centripetal impeller (305).

10. The ammonia compressor according to claim 7, characterized in that, The first bearing (207), the second bearing (208), the third bearing (307) and the fourth bearing (308) are each provided in two.

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