CN102494331A

CN102494331A - Energy-saving pump for recycling steam and condensed water

Info

Publication number: CN102494331A
Application number: CN2011104302558A
Authority: CN
Inventors: 刘建章; 陈思旗; 余昌茂
Original assignee: SANMING BAIYI BAMBOO CO Ltd
Current assignee: SANMING BAIYI BAMBOO CO Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-06-13
Anticipated expiration: 2031-12-20
Also published as: CN102494331B

Abstract

The invention discloses an energy-saving pump for recycling steam and condensed water. The energy-saving pump comprises a machine rack, a crank box, a pump body and a pipeline system and is characterized in that: a motor is mounted on a reducer of a planet cycloidal gear; the reducer of the planet cycloidal gear is connected to a crank by a coupler; the crank is fixedly arranged on an end cover of the crank by a bearing and a crank box is fixedly arranged on the machine rack simultaneously; a crank connection rod is mounted on the crank; a piston pin is mounted on the crank connection rod; the piston pin is fixedly arranged on a connection support of a piston rod; the connection support of the piston rod is fixedly arranged on the piston rod; a piston is fixedly arranged on the piston rod; a front cover of a piston cylinder and a back cover of the piston cover are fixedly arranged on the machine rack; an equipment condensed water pipe is connected with a condensed water recycling tank; the condensed water recycling tank is connected with a filter by a drain pipe; the filter is connected with a water inlet one-way valve through a tee joint; the water inlet one-way valve is connected in the pump body by the drain pipe; the pump body is connected with a water outlet one-way valve by the drain pipe; and the water outlet one-way valve is connected with a water inlet pipe of a boiler by the other tee joint. Therefore, the energy-saving pump has the advantages of stable transmission and smaller abrasion.

Description

The reclamation of condensate water energy-saving pump

Technical field

The invention belongs to a kind of boiler fixture, be specifically related to a kind of energy saver of recovery boiler steam condensed water.

Background technology

Steam boiler is China power consumption water consumption rich and influential family, the high steam that steam boiler produces, the condensate of discharging after steaming plant uses; Have very high temperature and contain very big residual heat resources; And water quality is good, and condensed water is similar to pure distilled water, can be directly as boiler feedwater.Therefore; It is an important energy saving measure that condensate reclaims, but most of enterprise all runs into a technical difficulty in the condensate removal process, and promptly condensed water itself has very high pressure; And the condensed water of these high pressure must be pressed into boiler by high-pressure hydraulic pump; But impact and compressing that the potted component around the general water pump rotating shaft is difficult to bear water under high pressure, water pump can't normally start work basically, and water pump is very easily damaged.Therefore, existing most steam generator systems adopt open recovery more; The condensed water that promptly produces with hot equipment is directly guided in the cement pit or iron flask with atmosphere through the condensed water recovery tube, with below water for cooling to 70 degree, is transported to boiler with water pump through water inlet pipe more then; The open recovery method of this kind only can reclaim the few partial heat energy of condensed water; And condensed water contacts with atmosphere in removal process, is prone to cause secondary pollution, and impurity, oxygen in the water significantly increase; Lost the fine quality that condensed water is similar to distilled water, must soften again, water conditioning process such as deoxygenation.For this reason; Design a kind of new steam condensate recovering device that can overcome above shortcoming; It can directly send into boiler through energy-saving pump with the condensed water of HTHP, thereby makes boiler reach energy-conservation, prevents that fouling from realizing the boiler feed water closed cycle; Reduce water resources consumption, reduce the discharging of pernicious gas and dust.

Summary of the invention

The object of the inventionProvide a kind of reclamation of condensate water energy-saving pump that can boiler steam condensate water directly be reclaimed.

The objective of the invention is to realize like this, described reclamation of condensate water energy-saving pump comprises frame, crankcase, the pump housing and pipe-line system; Its design feature is that described crankcase comprises that motor, planet cycloid wheel reductor, shaft coupling, bent axle end cap, bent axle, crankcase, crankshaft-link rod, piston pin, piston rod connect bearing and piston rod; Motor is installed on the planet cycloid wheel reductor and is fixed on the frame, and planet cycloid wheel reductor is connected on the bent axle through shaft coupling, and bent axle covers at crankshaft end through bearing fixing; The bent axle end cap is installed on the crankcase; Crankcase is fixed on the frame simultaneously, and crankshaft-link rod is installed on the bent axle, and piston pin is installed on the crankshaft-link rod; Piston pin is fixed on piston rod and connects on the bearing, and piston rod connects bearing and is fixed on the piston rod; The described pump housing comprises piston, piston cylinder, piston cylinder protecgulum and piston cylinder bonnet, and piston is fixed on the piston rod, and piston cylinder is installed on piston cylinder protecgulum and the piston cylinder bonnet, and piston cylinder protecgulum and piston cylinder bonnet are fixed on the frame; Described pipe-line system comprises on equipment condensate pipe, the condensed water recycling can, filter, threeway, water inlet check valve, the pump housing, go out water one-way valve, another threeway and boiler water inlet pipe; The equipment condensate pipe is connected on the condensed water recycling can; The condensed water recycling can is connected to filter through drain pipe; Filter is connected on the water check valve through threeway; The water inlet check valve is connected in the pump housing through drain pipe, and the pump housing is received out on the water one-way valve through drain pipe again, goes out water one-way valve and receives on the boiler water inlet pipe through another threeway.

The object of the invention also can be realized through following technical scheme, and is described The reclamation of condensate water energy-saving pumpIts characteristics are for also comprising high low water level motor automatic switching Circuits System; Described high low water level motor automatic switching Circuits System comprises following water level signal line, goes up water level signal line, motor power-supply wire and control circuit box; Following water level signal line and last water level signal line one end are separately fixed on the upper/lower positions and last position in the condensed water recycling can, the other end is connected on respectively on the control circuit box, and motor power-supply wire is received on the motor through the control circuit box.Described The reclamation of condensate water energy-saving pump, its characteristics are that upper cover of piston rod has connecting rod axially-movable sealing ring, and connecting rod axially-movable sealing ring is fixed on the piston cylinder protecgulum, and the piston cylinder protecgulum is fixed with sealing gland, and is provided with O-ring seals between piston cylinder protecgulum and the sealing gland.Described The reclamation of condensate water energy-saving pump, its characteristics are between the power shaft of the output shaft of planet Cycloidal Wheel reductor and bent axle, to be connected with shaft coupling, described shaft coupling adopts soft shaft coupling.Described The reclamation of condensate water energy-saving pumpIts characteristics are that filter is divided into two-way through threeway; Every road connects a water inlet check valve, and each water inlet check valve is connected to the parallel two-way water inlet that the pump housing one side is provided with through drain pipe, is provided with the corresponding two-way delivery port of parallel two-way water inlet with a side at pump housing opposite side; The two-way delivery port of the opposite side of the pump housing is received two respectively through drain pipe and is gone out on the water one-way valve, and two go out water one-way valve through on another threeway tandem to a boiler water inlet pipe.

Advantage of the present invention: 1) The present inventionAdopt the closed cycle mode of operation, the work through energy-saving pump can directly add the loss that has reduced heat energy in the back boiler with condensed water in closed circuit pipeline, avoided condensed water is injected the process of cistern, has reduced the loss of heat energy.2) adopt the condensed water recycling can to collect condensed water, install high low water level motor automatic switch machine circuit additional and reduce the energy-saving pump working time, the loss of having practiced thrift electric energy.3) whole deceleration system adopts planet cycloid wheel reductor, has reduced cost and volume weight effectively, and on market, the belt transmission is generally adopted in being connected of reductor and motor, causes the wearing and tearing of belt easily, needs frequent change at present.The steel structure flexible shaft coupling is adopted in this design, stable drive, and it is less to wear and tear, and the life-span obtains prolonging.

Description of drawings

Fig. 1 is a fundamental diagram of the present invention.

Fig. 2 looks sketch map for the left side of Fig. 1.

Fig. 3 is the schematic top plan view of Fig. 1.

Fig. 4 is the pump housing of the present invention and crankcase profile.

Fig. 5 is the C part partial enlarged drawing among Fig. 4.

Fig. 6 is the structural representation that the control circuit box of high low water level motor automatic switching Circuits System of the present invention is connected with the motor of the following water level signal line of condensed water recycling can, last water level signal line and crankcase respectively.

Among the figure: equipment condensate pipe 1, condensed water recycling can 2, filter 3, threeway 4, water inlet check valve 5, the pump housing 6; Go out water one-way valve 7, threeway 8, boiler water inlet pipe 9, piston cylinder bonnet 10, piston cylinder 11, piston 12; Piston rod 13, piston cylinder protecgulum 14, piston rod connects bearing 16, piston pin 17, crankshaft-link rod 18, crankcase 19; Frame 20, bent axle 21, bent axle end cap 22, shaft coupling 23, planet cycloid wheel reductor 24; Motor 25, control circuit box 26, following water level signal line 27, last water level signal line 28, motor power-supply wire 29.

The specific embodiment

Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.

Like Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5; Reclamation of condensate water energy-saving pump of the present invention; Comprise frame 20, crankcase 19, the pump housing 6, pipe-line system, high low water level motor automatic switching Circuits System, it is characterized in that described crankcase comprises that motor 25, planet cycloid wheel reductor 24, shaft coupling 23, bent axle end cap 22, bent axle 21, crankcase 19, crankshaft-link rod 18, piston pin 17, piston rod connect bearing 16 and piston rod 13, motor 25 is installed on the planet cycloid wheel reductor 24 and is fixed on the frame 20; Planet cycloid wheel reductor 24 is connected on the bent axle 21 through shaft coupling 23; On bent axle end cap 22, bent axle end cap 22 is installed on the crankcase 19 bent axle 21 through bearing fixing, and crankcase 19 is fixed on the frame 20 simultaneously; Crankshaft-link rod 18 is installed on the bent axle 21; Piston pin 17 is installed on the crankshaft-link rod 18, and piston pin 17 is fixed on piston rod and connects on the bearing 16, and piston rod connects bearing 16 and is fixed on the piston rod 13; The described pump housing comprises piston 12, piston cylinder 11, piston cylinder protecgulum 14 and piston cylinder bonnet 10; Piston 12 is fixed on the piston rod 13; Piston cylinder 11 is installed on piston cylinder protecgulum 14 and the piston cylinder bonnet 10, and piston cylinder protecgulum 14 is fixed on the frame with piston cylinder bonnet 10; Described pipe-line system comprises on equipment condensate pipe 1, the condensed water recycling can 2, filter 3, threeway 4, water inlet check valve 5, the pump housing 6, go out water one-way valve 7, threeway 8 and boiler water inlet pipe 9; Equipment condensate pipe 1 is connected on the condensed water recycling can 2; Condensed water recycling can 2 is connected to filter 3 through drain pipe; Filter 3 is connected on the water check valve 5 through threeway 4; Water inlet check valve 5 is connected in the pump housing 6 through drain pipe, and the pump housing 6 is received out on the water one-way valve 7 through drain pipe again, goes out water one-way valve 7 and receives on the boiler water inlet pipe 9 through threeway 8; Described high low water level motor automatic switching Circuits System comprises following water level signal line 27, goes up water level signal line 28 and control circuit box 26 compositions; Following water level signal line 27 is fixed on last water level signal line 28 1 ends that the other end is connected on the control circuit box 26 on the condensed water recycling can 2, and motor power-supply wire 29 is received on the motor through control circuit box 26.Filter 3 of the present invention is divided into two-way through threeway 4; Every road connects a water inlet check valve 5; Each water inlet check valve 5 is connected to the parallel two-way water inlet that the pump housing 6 one sides are provided with through drain pipe; Be provided with the corresponding two-way delivery port of parallel two-way water inlet with a side at the pump housing 6 opposite sides; The two-way delivery port of the opposite side of the pump housing 6 is received two respectively through drain pipe and is gone out on the water one-way valve 7, and two go out water one-way valve 7 through on another threeway 8 tandems to a boiler water inlet pipe 9.Its operation principle is: (see figure 1) flows to the condensed water recycling can with the condensed water of steaming plant through condensate pipe and collects, and condensed water is through the filter impurity screening, goes up the water level signal line when going up water level signal line place and signals to circuit control box when water level arrives; Circuit control box is a prior art, and it has goes up the water level signal line and signal to circuit control box when water level arrive to be gone up water level signal line place, thereby the closed motor power wiretap of circuit control box is switched on to motor; And when water level arrived water level signal line place, following water level signal line signaled to circuit control box, stopped to supply power to motor thereby circuit control box breaks off the motor power wiretap; Stop functions such as pump housing work; Open and close at check valve under the effect of sealing, through the rotation of bent axle in the motor drives crankcase, through moving back and forth (see figure 2) about crankshaft-link rod drive piston and piston rod; When piston moves toward the B direction; Can produce negative pressure in the A chamber, negative pressure is impelled into water one-way valve opens, and condensed water gets into the A chamber through the water inlet check valve; When piston moves toward A; The condensed water check valve of intaking simultaneously in compression A chamber is closed automatically, and opens out water one-way valve, directly annotates back boiler to the high pressure condensed water.In like manner, when piston moves toward the A direction, can produce negative pressure in the B chamber; Negative pressure is impelled into water one-way valve opens; Condensed water gets into the B chamber through the water inlet check valve, and when piston during toward the B motion, the condensed water check valve of intaking simultaneously in compression B chamber is closed automatically; And open out water one-way valve, directly annotate back boiler to the high pressure condensed water.Piston moves back and forth between AB, reaches the purpose of continuous firing.When water level arrives water level signal line place; Following water level signal line signals to circuit control box; Thereby circuit control box breaks off the motor power wiretap to be stopped to supply power to motor; Stop pump housing work, avoided like this condensed water not for a long time the no-load running of the pump housing reaching the purpose of using electricity wisely.

Be with connecting rod axially-movable sealing ring 30 on the described piston rod 13; Connecting rod axially-movable sealing ring 30 can be that the model that sea, the Ningbo dynamo-electric Co., Ltd of daybreak Ou Jie produces is the RST-19 product; Connecting rod axially-movable sealing ring 30 is fixed on the piston cylinder protecgulum 14; Piston cylinder protecgulum 14 is fixed with sealing gland 31, and is provided with O-ring seals 32 between piston cylinder protecgulum 14 and the sealing gland 31.

Between the power shaft of the output shaft of planet Cycloidal Wheel reductor 24 and bent axle 21, be connected with shaft coupling 23, described shaft coupling 23 adopts soft shaft coupling, can reduce vibrations, improves the service life of machine.Soft shaft coupling can be the plum blossom shaft coupling, can adopt Zhenjiang to open great mechanical Co., Ltd product.

Claims

1. one kind The reclamation of condensate water energy-saving pumpComprise frame (20), crankcase, the pump housing and pipe-line system; It is characterized in that described crankcase comprises that motor (25), planet cycloid wheel reductor (24), shaft coupling (23), bent axle end cap (22), bent axle, crankcase (19), crankshaft-link rod (18), piston pin (17), piston rod connect bearing (16) and piston rod (13); Motor is installed in planet cycloid wheel reductor (24) and goes up and be fixed on the frame (20), and planet cycloid wheel reductor (24) is connected on the bent axle (21) through shaft coupling (23), and bent axle (21) passes through bearing fixing on bent axle end cap (22); The bent axle end cap is installed on the crankcase (19); Crankcase (19) is fixed on the frame (20) simultaneously, and crankshaft-link rod (18) is installed on the bent axle (21), and piston pin (17) is installed on the crankshaft-link rod (18); Piston pin (17) is fixed on piston rod and connects on the bearing, and piston rod connects bearing (16) and is fixed on the piston rod (13); The described pump housing comprises piston (12), piston cylinder, piston cylinder protecgulum (14) and piston cylinder bonnet (10); Piston (12) is fixed on the piston rod (13); Piston cylinder (11) is installed on piston cylinder protecgulum (14) and the piston cylinder bonnet (10), and piston cylinder protecgulum (14) and piston cylinder bonnet (10) are fixed on the frame (20); Described pipe-line system comprises (2), filter on equipment condensate pipe (1), the condensed water recycling can, threeway (4), water inlet check valve (5), the pump housing (6), goes out water one-way valve (7), another threeway (8) and boiler water inlet pipe (9); Equipment condensate pipe (1) is connected on the condensed water recycling can (2); Condensed water recycling can (2) is connected to filter (3) through drain pipe; Filter (3) is connected on the water check valve (5) through threeway (4); Water inlet check valve (5) is connected in the pump housing (6) through drain pipe; The pump housing (6) is received out on the water one-way valve (7) through drain pipe again, goes out water one-way valve (7) and receives on the boiler water inlet pipe (9) through another threeway (8).

2. according to claim 1 The reclamation of condensate water energy-saving pumpIt is characterized in that also comprising high low water level motor automatic switching Circuits System; Described high low water level motor automatic switching Circuits System comprises following water level signal line (27), goes up water level signal line (28), motor power-supply wire (29) and control circuit box (26); Following water level signal line (27) and last water level signal line one end are separately fixed on the upper/lower positions and last position in the condensed water recycling can (2), the other end is connected on respectively on the control circuit box, and motor power-supply wire (29) is received on the motor through control circuit box (26).

3. according to claim 1 and 2 The reclamation of condensate water energy-saving pumpIt is characterized in that being with on the piston rod (13) connecting rod axially-movable sealing ring (30); Connecting rod axially-movable sealing ring (30) is fixed on the piston cylinder protecgulum (14); Piston cylinder protecgulum (14) is fixed with sealing gland (31), and is provided with O-ring seals (32) between piston cylinder protecgulum (14) and the sealing gland (31).

4. according to claim 1 and 2 The reclamation of condensate water energy-saving pump, it is characterized in that between the power shaft of the output shaft of planet Cycloidal Wheel reductor and bent axle (21), being connected with shaft coupling (23), described shaft coupling (23) adopts soft shaft coupling.

5. according to claim 1 and 2 The reclamation of condensate water energy-saving pumpIt is characterized in that filter (3) is divided into two-way through threeway; Every road connects a water inlet check valve (5); Each water inlet check valve (5) is connected to the parallel two-way water inlet that the pump housing (6) one sides are provided with through drain pipe; Be provided with the corresponding two-way delivery port of parallel two-way water inlet with a side at the pump housing (6) opposite side, the two-way delivery port of the opposite side of the pump housing (6) is received two respectively through drain pipe and is gone out on the water one-way valve (7), and two go out water one-way valve (7) through on another threeway (8) tandem to a boiler water inlet pipe (9).