Methanol hydraulic turbine generator set

Abstract

The utility model discloses a methanol hydraulic turbine generator set, relates to the technical field of turbine generator sets, and solves the technical problems that in the prior art, radial force is high and unstable, safety is low, cavity media can leak into a collecting system, and axial force is unbalanced. A main power generator is fixedly installed on the upper wall face of the main base, a coupler body is connected between the output end of the hydraulic turbine and the input end of the main power generator, the discharge volute chamber designed to be of a double-volute structure is adopted, radial force can be reduced, and therefore the stability of the whole unit is improved, the problems caused by instability are reduced, and the power generation efficiency is improved. Container type mechanical seals are adopted at the two ends, cleanliness and environmental protection of a conveying medium are guaranteed, a spacer fluid self-circulation mode is adopted in the second seal, an external pressure source is lower than the pressure of a sealing cavity, when a fault occurs, the medium in the cavity leaks to a collecting system, and safety and reliability of operation are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic turbine generator sets, in particular to a methanol hydraulic turbine generator set. Background Art

[0002] The technical field involved in the utility model is that the methanol hydraulic turbine generator set is a BB2 type equipment that complies with the API610 standard. It is mainly used in the energy-saving and carbon-reducing integrated purification device in the petrochemical industry to recover methanol energy and convert it into mechanical energy to drive the generator to generate electricity. This equipment uses the reverse operation of the pump to achieve energy recovery, and has the characteristics of simple and compact structure, high efficiency, safe and reliable operation; in the process system of the caprolactam industry chain, the methanol hydraulic turbine generator set can convert abundant energy into mechanical energy, thereby achieving energy saving and emission reduction. In this way, not only can the energy utilization efficiency be improved, but also the impact on the environment can be reduced, which is in line with the concept of sustainable development; in general, the methanol hydraulic turbine generator set plays an important role in the petrochemical industry and has contributed to energy conservation, carbon reduction and environmental protection. Its high efficiency, safety and reliability make it an ideal energy recovery and power generation equipment. Summary of the invention

[0003] In view of the deficiencies of the prior art, the utility model provides a methanol hydraulic turbine generator set, which solves the technical problems of the prior art, such as high instability of radial force, low safety, possible leakage of cavity medium into the collection system, and unbalanced axial force.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a methanol hydraulic turbine generator set, including a main base, a hydraulic turbine is fixedly installed on the upper wall of the main base, a main generator is fixedly installed on the upper wall of the main base, a coupling body is connected between the output end of the hydraulic turbine and the input end of the main generator, a coupling shield is fixedly installed outside the coupling body, the hydraulic turbine includes a main pump body, a main shaft is rotatably installed in the main pump body, a pair of impeller bodies are fixedly installed on the main shaft, and a flushing system is arranged on the main base and at both ends of the hydraulic turbine.

[0005] Preferably, a suction end pump cover is fixedly mounted on one end of the main pump body, a mechanical seal is fixedly mounted on the suction end pump cover, a sealing box body is fixedly mounted on the suction end pump cover, and a driving end bearing body is fixedly mounted on one end of the sealing box body.

[0006] Preferably, a pump cover is provided at one end of the main pump body, a balancing water pipe is provided on the pump cover, and one end of the balancing water pipe is fixedly connected to the side wall of the main pump body.

[0007] Preferably, a throttling sleeve and the intermediate sleeve are connected between the main pump body and the main shaft, and an intermediate shaft sleeve is arranged between the main shaft and the intermediate sleeve.

[0008] Preferably, an O-ring is connected between the suction end pump cover and the main pump body, and a winding gasket is connected between the suction end pump cover and the main pump body.

[0009] Preferably, the main pump body and the pump cover body are connected with main bolts, main nuts and main washers.

[0010] Preferably, a pressure relief sleeve is connected between the pump cover and the main shaft, and the pressure relief sleeve is connected to one end of the balancing water pipe.

[0011] Beneficial Effects

[0012] The utility model provides a methanol hydraulic turbine generator set. The discharge volute chamber of the utility model adopts a double volute structure design, which helps to reduce radial force, thereby improving the stability of the entire unit and reducing problems caused by instability. Containerized mechanical seals are adopted at both ends, and the flushing method adopts 11+52+62 double sealing method. Self-flushing can be flushed with the medium transported by the pump itself, without the need for an external flushing source, thereby ensuring the cleanliness and environmental protection of the transported medium. The second seal adopts the isolation liquid self-circulation method, and the external pressure source is lower than the sealing chamber pressure. When a fault occurs, the medium in the chamber will leak to the collection system, thereby ensuring the safety and reliability of operation. This design can effectively balance the axial force, improve the balance and stability of the unit, and adopt 304 stainless steel to help increase corrosion resistance and increase the service life of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of a methanol hydraulic turbine generator set described in the utility model.

[0014] Figure 2 This is a schematic diagram of the main structure of a methanol liquid penetration device described in the utility model.

[0015] In the figure: 1, main shaft; 2, drive end bearing body; 3, sealing box body; 4, mechanical seal; 5, suction end pump cover; 6, main pump body; 7, throttle sleeve; 8, drive locking nut; 9, pump cover sealing ring; 10, impeller front sealing ring; 11, impeller body; 12, pump body sealing ring; 13, impeller rear sealing ring; 14, intermediate sleeve; 15, intermediate shaft sleeve; 16, balance water pipe; 17, non-drive locking nut; 18, pressure relief sleeve; 19, pump cover; 20, non-drive end bearing body; 21, speed measuring component; 22, spiral wound pad; 23, O-ring; 24, main bolt; 25, main nut; 26, main washer; 27, auxiliary bolt; 31, hydraulic turbine; 32, main base; 33, anchor bolt; 34, anchor nut; 35, anchor washer; 36, coupling guard; 37, coupling body; 38, main generator; 39, flushing system; DETAILED DESCRIPTION

[0016] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. The detailed description is as follows.

[0017] See also Figure 1-2 The utility model provides a technical solution: a methanol hydraulic turbine 31 generator set, including a main base 32, a hydraulic turbine 31 is fixedly installed on the upper wall of the main base 32, a main generator 38 is fixedly installed on the upper wall of the main base 32, a coupling body 37 is connected between the output end of the hydraulic turbine 31 and the input end of the main generator 38, a coupling shield 36 is fixedly installed outside the coupling body 37, the hydraulic turbine 31 includes a main pump body 6, a main shaft 1 is rotatably installed in the main pump body 6, a pair of impeller bodies 11 are fixedly installed on the main shaft 1, and a flushing system 39 is arranged on the main base 32 and at both ends of the hydraulic turbine 31.

[0018] This embodiment is further configured as follows: a suction end pump cover 5 is fixedly mounted on one end of the main pump body 6, a mechanical seal 4 is fixedly mounted on the suction end pump cover 5, a sealing box body 3 is fixedly mounted on the suction end pump cover 5, and a driving end bearing body 2 is fixedly mounted on one end of the sealing box body 3.

[0019] This embodiment is further configured as follows: a pump cover 19 is provided at one end of the main pump body 6 , a balancing water pipe 16 is provided on the pump cover 19 , and one end of the balancing water pipe 16 is fixedly connected to the side wall of the main pump body 6 .

[0020] This embodiment is further configured such that a throttle sleeve 7 and the intermediate sleeve 14 are connected between the main pump body 6 and the main shaft 1 , and an intermediate shaft sleeve 15 is provided between the main shaft 1 and the intermediate sleeve 14 .

[0021] This embodiment is further configured such that an O-ring 23 is connected between the suction end pump cover 5 and the main pump body 6 , and a winding pad 22 is connected between the suction end pump cover 5 and the main pump body 6 .

[0022] This embodiment is further configured such that a main bolt 24 , a main nut 25 and a main washer 26 are connected to the main pump body 6 and the pump cover body 19 .

[0023] This embodiment is further configured such that a pressure relief sleeve 18 is connected between the pump cover 19 and the main shaft 1 , and the pressure relief sleeve 18 is connected to one end of the balancing water pipe 16 .

[0024] The detailed connection means are well known in the art; Figure 1 As shown, the hydraulic turbine 31 and the main generator 38 of the utility model unit are installed on the main base 32, and are connected through the coupling body 37 to form a methanol hydraulic turbine 31 generator set. When viewed from the main generator 38, the hydraulic turbine 31 rotates clockwise.

[0025] like Figure 2 As shown, the main shaft 1 extension of the hydraulic turbine 31 of the utility model unit adopts a conical shaft extension, which is convenient for the disassembly and assembly of the coupling. The two-stage impeller impeller body 11 is slidably mounted on the shaft in sequence, and the impeller is fixed by the driving locking nut 8 and the non-driving locking nut 17 respectively to prevent the impeller from axial stringing. This sliding method makes the shaft force more uniform and is not easy to produce stress concentration; each stage of the impeller body 11 and the main shaft 1 are fixed by a thin flat key to ensure the relative fixation between the two; each stage of the impeller body 11 is equipped with a replaceable sealing ring, which is welded to the impeller body 11 by spot welding to form a whole.

[0026] like Figure 2 As shown, the main pump body 6, the pump cover and the matching position with the impeller are provided with sealing rings correspondingly, which can play the role of throttling and reducing pressure.

[0027] like Figure 2 As shown, a balancing water pipe 16 is provided between the main pump body 6 and the pump cover body 19, and a pressure relief sleeve 18 is provided to balance and reduce the pressure of the sealing cavity at the non-driving end.

[0028] like Figure 2As shown, the suction end pump cover 5 and the pump cover body 19 are bolted together with the main pump body 6, and an "O" type sealing ring 23 is provided between the pump body and the pump cover. A graphite stainless steel spiral wound gasket 22 is provided on the end surface of the main pump body 6 and the suction end pump cover 5 and the pump cover body 19. It can effectively prevent the occurrence of sealing surface leakage, avoid the leakage risk caused by the easy failure of the O-ring seal, ensure the sealing effect, and improve the working efficiency of the pump.

[0029] The hydraulic turbine 31 provided by the utility model is a radially split horizontal two-stage double-suction volute centrifugal pump, the driving end of the hydraulic turbine 31 is directly connected to the main generator 38 through an elastic diaphragm coupling, wherein the hydraulic turbine 31 and the main generator 38 are assembled together on the same main base 32.

[0030] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A methanol hydraulic turbine (31) generator set, comprising a main base (32), characterized in that: A hydraulic turbine (31) is fixedly mounted on the upper wall of the main base (32), a main generator (38) is fixedly mounted on the upper wall of the main base (32), a coupling body (37) is connected between the output end of the hydraulic turbine (31) and the input end of the main generator (38), a coupling shield (36) is fixedly mounted outside the coupling body (37), the hydraulic turbine (31) comprises a main pump body (6), a main shaft (1) is rotatably mounted inside the main pump body (6), a pair of impeller bodies (11) are fixedly mounted on the main shaft (1), and a flushing system (39) is arranged on the main base (32) and at both ends of the hydraulic turbine (31).

2. A methanol hydraulic turbine (31) generator set according to claim 1, characterized in that A suction end pump cover (5) is fixedly mounted on one end of the main pump body (6), a mechanical seal (4) is fixedly mounted on the suction end pump cover (5), a sealing box body (3) is fixedly mounted on the suction end pump cover (5), and a drive end bearing body (2) is fixedly mounted on one end of the sealing box body (3).

3. A methanol hydraulic turbine (31) generator set according to claim 1, characterized in that A pump cover (19) is provided at one end of the main pump body (6), a balancing water pipe (16) is provided on the pump cover (19), and one end of the balancing water pipe (16) is fixedly connected to the side wall of the main pump body (6).

4. A methanol hydraulic turbine (31) generator set according to claim 1, characterized in that A throttling sleeve (7) and an intermediate sleeve (14) are connected between the main pump body (6) and the main shaft (1), and an intermediate shaft sleeve (15) is arranged between the main shaft (1) and the intermediate sleeve (14).

5. A methanol hydraulic turbine (31) generator set according to claim 2, characterized in that An O-ring (23) is connected between the suction end pump cover (5) and the main pump body (6), and a winding pad (22) is connected between the suction end pump cover (5) and the main pump body (6).

6. A methanol hydraulic turbine (31) generator set according to claim 3, characterized in that The main pump body (6) and the pump cover body (19) are connected with a main bolt (24), a main nut (25) and a main washer (26).

7. A methanol hydraulic turbine (31) generator set according to claim 3, characterized in that A pressure relief sleeve (18) is connected between the pump cover (19) and the main shaft (1), and the pressure relief sleeve (18) is connected to one end of the balance water pipe (16).

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