CN210345432U

CN210345432U - Residual steam recycling device of boiler feed pump

Info

Publication number: CN210345432U
Application number: CN201920798946.5U
Authority: CN
Inventors: 周志杰; 卞小俊
Original assignee: Changzhou Warren Thermal Power Co ltd
Current assignee: Changzhou Warren Thermal Power Co ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-17
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a surplus vapour cyclic utilization device of boiler feed pump belongs to boiler feed pump technical field, and its technical scheme main points are, including the water tank, oxygen-eliminating device, feed pump, boiler and the steam turbine that connect gradually, the boiler with it is provided with first connecting pipe to connect between the steam turbine, the steam turbine is connected with power generation system and exhaust pipe, the steam turbine with the power generation system electricity is connected, be provided with the aspiration pump on the exhaust pipe, the aspiration pump is kept away from the one end of exhaust pipe with first connecting pipe communicates with each other, the exhaust pipe sets up to "Y" type, the position intercommunication that the exhaust pipe is close to ground is provided with the outlet pipe, the outlet pipe with the exhaust pipe communicates with each other, the outlet pipe is kept away from the one end of exhaust pipe with the water tank top is connected. Thereby achieving the effect of saving energy. The utility model is suitable for a surplus vapour of boiler feed pump is handled.

Description

Residual steam recycling device of boiler feed pump

Technical Field

The utility model belongs to the technical field of boiler feed pump technique and specifically relates to a surplus vapour cyclic utilization device of boiler feed pump is related to.

Background

At present, the flow rate of a boiler feed water pump is 25-150m3/h, and the lift can reach 480-1100 m. Can deliver high-temperature clean water below 280 ℃, and is suitable for boiler water supply, factory and city water supply. The device is suitable for conveying clear water with the temperature lower than 110 ℃ or other non-corrosive liquid with physical and chemical properties similar to water, and is widely used for boiler water supply of industrial, mining, enterprise and public institutions and urban life water supply.

In a conventional feed pump, water is heated by a boiler, the heated water is supplied to a water tank by a pump, and the hot water in the water tank is converted into mechanical power by a turbine, and used as a prime mover for power generation.

The above prior art solutions have the following drawbacks: steam in the boiler supplies power to the power generation system through the steam turbine, but all the steam is difficult to be fully utilized, so that waste heat is discharged into the atmosphere through the steam turbine, and resource waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a surplus vapour cyclic utilization device of boiler feed pump has waste heat recovery, the effect of energy saving.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a surplus vapour cyclic utilization device of boiler feed pump, is including the water tank, oxygen-eliminating device, feed pump, boiler and the steam turbine that connect gradually, the boiler with it is provided with first connecting pipe to connect between the steam turbine, the steam turbine is connected with power generation system and exhaust pipe, the steam turbine with the power generation system electricity is connected, be provided with the aspiration pump on the exhaust pipe, the aspiration pump is kept away from the one end of exhaust pipe with first connecting pipe communicates with each other, the exhaust pipe sets up to "Y" type, the position intercommunication that the exhaust pipe is close to ground is provided with the outlet pipe, the outlet pipe with the exhaust pipe communicates with each other, the outlet pipe is kept away from the one end of exhaust pipe with the water tank top is connected.

Through adopting above-mentioned technical scheme, the water pump is extracted the inside water of water tank, and the inside water of water tank is handled through the oxygen-eliminating device before getting into the water pump, heats the saturation temperature to corresponding under the oxygen-eliminating device operating pressure with water, gets rid of oxygen and other gases dissolved in water, reduces boiler, pipeline and other accessory equipment's corrosion rate to increase boiler, pipeline and other accessory equipment's life. The feed pump pumps the water after the removal of oxygen into the boiler, the boiler heats the water into high-pressure steam, and the turbine converts the energy of the high-pressure steam into mechanical work, which is used as a prime mover for power generation. And a part of redundant steam of the steam turbine enters the steam exhaust pipe, enters the first connecting pipe through the air extraction pump, and is recycled through the steam turbine again. A part of steam in the steam exhaust pipe can be liquefied, and the liquefied water enters the water tank through the water outlet pipe, so that energy can be saved.

The utility model discloses further set up to, the exhaust pipe with be provided with the flange between the outlet pipe, the outlet pipe is kept away from the one end connection of flange is provided with the containing box, the containing box with it is provided with the second connecting pipe to connect between the water tank, be provided with the water pump on the second connecting pipe.

Through adopting above-mentioned technical scheme, when some steam was through the exhaust steam pipe, the liquefaction water, the containing box stored the water of liquefaction earlier, and when the water after the liquefaction was stored certain capacity, in beating water into the water tank through the second connecting pipe with water through the water pump, carry out reuse with the water of liquefaction to can the energy saving.

The utility model discloses further set up to, the outlet pipe inner chamber is provided with movable sealing door, movable sealing door includes first dodge gate and second dodge gate, first dodge gate with the second dodge gate is fan-shaped, first dodge gate with the curved edge of second dodge gate all with the laminating of outlet pipe inner wall, first dodge gate with the mutual articulated support column that is provided with of second dodge gate straight flange, the both ends of support column are fixed in respectively on the internal face of outlet pipe, first dodge gate with the second dodge gate with it is provided with the connecting piece all to connect between the inner wall between the outlet pipe.

Through adopting above-mentioned technical scheme, the setting of first dodge gate and second dodge gate can make things convenient for opening and shutting of activity sealing door, and the water of the liquefaction of being convenient for flows through. The setting of support column can play support and spacing effect to first dodge gate and second dodge gate. The setting of connecting piece can control opening and shutting of first dodge gate and second dodge gate, and under the normality, first dodge gate and second dodge gate all are in the closed condition, and when the one end that the outlet pipe is close to the flange stored a quantitative liquefied water, two connecting pieces are opened first dodge gate and second dodge gate respectively, and during the water after the liquefaction can get into the outlet pipe, then got into the containing box from the outlet pipe.

The utility model discloses further set up to, two the connecting piece all includes bracing piece and slider, first dodge gate with the second dodge gate is close to the one side of flange respectively with two the one end of bracing piece is articulated, two the other end of bracing piece respectively with two the slider is articulated, the outlet pipe is close to all seted up the spout on the internal face relative position of flange, two the slider respectively with two the spout cooperation is connected, the outlet pipe is close to the fixed cylinder that is equipped with on the internal face of flange one end, the cylinder includes the telescopic link, the telescopic link is kept away from the one end of flange with slider fixed connection.

By adopting the technical scheme, when the movable sealing door is in a closed state, the first movable door and the second movable door are respectively lifted to the same plane through the two support rods. When the water after the liquefaction is stored to certain capacity, stretching out of the cylinder control telescopic link slides the slider in the sliding groove along the direction that the cylinder is kept away from to the sliding groove, and pushes away first dodge gate and second dodge gate, can be close to the water drainage of the inside of cylinder one end with the outlet pipe and go into to the outlet pipe, and then get into in the containing box.

The utility model discloses further set up to, two the slider cross section all sets up to "worker" shape, two the spout cross section all sets up to "T" shape, two the slider respectively with two the spout cooperation is connected.

Through adopting above-mentioned technical scheme, the spout sets up to "T" shape, can be with the direct joint of "worker" shape slider in the spout, makes the slider be difficult to drop from the spout, can play fixed effect to the slider.

The utility model discloses further set up to, two the spout is kept away from the one end of cylinder all extends the standing groove that sets up to "Contraband" shape, the height of standing groove does 1.1 to 1.15 times of slider height.

Through adopting above-mentioned technical scheme, the setting of the standing groove of "Contraband" shape can be convenient for the slider and install in the spout.

The utility model discloses further set up to, first dodge gate with all be provided with the rubber layer around the second dodge gate.

Through adopting above-mentioned technical scheme, the rubber layer plays sealed effect, and when the activity sealing door was in the closed condition, the rubber layer can play sealed effect, makes steam be difficult to reveal.

The utility model discloses further set up to, first dodge gate with all be provided with the gravity inductor on the second dodge gate, the containing box is close to the one side of outlet pipe is provided with the controller, the gravity inductor with the cylinder all with the controller electricity is connected.

Through adopting above-mentioned technical scheme, the water after the liquefaction blocks the one end that is close to the flange at the outlet pipe through first dodge gate and second dodge gate, and the water that is located the outlet pipe and is close to in flange one end measures its weight through the gravity inductor, sets up the relative numerical value of gravity inductor in the controller, and when the controller sensed the numerical value of gravity inductor survey, the telescopic link of controller control cylinder stretched out, and the water discharge gets into in the containing box.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the steam exhaust pipe, the water outlet pipe, the air pump, the water pump, the storage box and the second connecting pipe, residual steam in the steam turbine can be reused, and the effect of saving energy is achieved;

2. through the arrangement of the movable sealing door and the rubber layer, the sealing effect can be achieved, so that the leakage of steam can be reduced;

3. through the setting of cylinder, bracing piece, slider and spout, can play the effect of opening and shutting first dodge gate and second dodge gate.

Drawings

Fig. 1 is a schematic view of the overall structure of the residual steam recycling device for embodying the boiler feed pump of the present invention.

Fig. 2 is a schematic sectional view for showing the inner structure of the water outlet pipe in the present invention.

Fig. 3 is a schematic view of the connection relationship between the connecting member and the movable sealing door in the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a water tank; 2. a deaerator; 3. a feed pump; 4. a boiler; 5. a steam turbine; 51. a first connecting pipe; 6. a controller; 7. a power generation system; 8. a steam exhaust pipe; 81. a first upper branch pipe; 82. a second upper branch pipe; 821. an air pump; 83. a lower branch pipe; 84. a water outlet pipe; 841. a chute; 842. a cylinder; 843. a telescopic rod; 844. a placement groove; 85. a flange; 86. a storage box; 87. a second connecting pipe; 88. a water pump; 9. a movable sealing door; 91. a first movable door; 92. a second movable door; 93. a support pillar; 94. a connecting member; 941. a support bar; 942. a slider; 95. a rubber layer; 96. a gravity sensor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a surplus vapour cyclic utilization device of boiler feed pump, including water tank 1, oxygen-eliminating device 2, feed pump 3, boiler 4, steam turbine 5 and the power generation system 7 that connects gradually, steam turbine 5 is connected with power generation system 7 electricity. A first connecting pipe 51 is connected between the boiler 4 and the steam turbine 5, and a steam exhaust pipe 8 is connected to the top of the steam turbine 5. The steam exhaust pipe 8 is arranged in a Y shape, the steam exhaust pipe 8 is divided into a first upper branch pipe 81, a second upper branch pipe 82 and a lower branch pipe 83, and the first upper branch pipe 81, the second upper branch pipe 82 and the lower branch pipe 83 are communicated with each other. The first upper branch pipe 81 is connected to the steam turbine 5, and the second upper branch pipe 82 is connected to the first connection pipe 51. The second upper branch pipe 82 is provided with a suction pump 821 which can draw out excess steam in the turbine 5 and send the steam into the first connection pipe 51 for reuse. A flange 85 is fixedly arranged at one end of the lower branch pipe 83 far away from the steam turbine 5, a water outlet pipe 84 is communicated with one surface of the flange 85 far away from the lower branch pipe 83, the lower branch pipe 83 is communicated with the water outlet pipe 84, and the water outlet pipe 84 is communicated with the lower branch pipe 83. One end of the water outlet pipe 84, which is far away from the flange 85, is connected with a storage box 86, when a part of steam passes through the steam exhaust pipe 8, the steam is liquefied into water, and the storage box 86 stores the liquefied water firstly. Be provided with second connecting pipe 87 between containing box 86 and the water tank 1 in the connection, the one end that containing box 86 was kept away from to second connecting pipe 87 is connected with the water tank 1 top, is provided with water pump 88 on the second connecting pipe 87, and water pump 88 takes out the water in containing box 86 and enters into water tank 1 in, carries out reuse with liquefied water to can the energy saving.

Referring to fig. 2, the inner cavity of the water outlet pipe 84 is provided with a movable sealing door 9, the movable sealing door 9 comprises a first movable door 91 and a second movable door 92, and the first movable door 91 and the second movable door 92 are both fan-shaped, so that the movable sealing door 9 can be conveniently opened and closed, and the liquefied water can be conveniently circulated. The curved edges of the first movable door 91 and the second movable door 92 are attached to the inner wall of the water outlet pipe 84, the straight edges of the first movable door 91 and the second movable door 92 are hinged to each other to form a support column 93, two ends of the support column 93 are fixed to the inner wall surface of the water outlet pipe 84 respectively, the support column 93 can control the opening and closing of the first movable door 91 and the second movable door 92, and the first movable door 91 and the second movable door 92 are in a closed state in a normal state.

Referring to fig. 3, connectors 94 are respectively connected between the first movable door 91 and the second movable door 92 and the inner wall of the water outlet pipe 84, when a certain amount of liquefied water is stored at one end of the water outlet pipe 84 close to the flange 85, the first movable door 91 and the second movable door 92 are respectively opened by the two connectors 94, and the liquefied water can enter the water outlet pipe 84 and then enter the storage box 86 from the water outlet pipe 84. All be provided with rubber layer 95 around first dodge gate 91 and the second dodge gate 92, rubber layer 95 plays sealed effect, and when activity sealing door 9 was in the closed condition, rubber layer 95 can play sealed effect, makes steam be difficult to reveal. The gravity sensors 96 are disposed on the first movable door 91 and the second movable door 92, and are used for measuring the weight of the liquefied water borne by the first movable door 91 and the second movable door 92. And the side of containing box 86 that is close to outlet pipe 84 is provided with controller 6 (as shown in fig. 1), and gravity inductor 96 and cylinder 842 all are connected with controller 6 electricity, and when controller 6 detected that the weight of the water on gravity inductor 96 reached the setting value, drive opening and shutting of first dodge gate 91 and second dodge gate 92 through controller 6 control connecting piece 94.

Referring to fig. 3 and 4, each of the two connectors 94 includes a support rod 941 and a slider 942, when the movable sealing door 9 is in a closed state, the two support rods 941 respectively lift the first movable door 91 and the second movable door 92 to the same plane, so as to partition the internal space of the water outlet pipe 84 into two parts, and the liquefied water is stored in the space formed by the water outlet pipe 84 in the first movable door 91 and the second movable door 92 near the flange 85. First dodge gate 91 and second dodge gate 92 are close to the one side of flange 85 and articulate with the one end of two bracing pieces 941 respectively, the other end of two bracing pieces 941 articulates with two sliders 942 respectively, spout 841 has all been seted up on the internal face relative position that outlet pipe 84 is close to flange 85, two slider 942 cross sections all set up to "worker" shape, two spout 841 cross sections all set up to "T" shape, two sliders 942 respectively with two spout 841 cooperation be connected, the slider 942 is inside to do the lifting and dropping slip at spout 841. The one end that two spouts 841 kept away from cylinder 842 all extends the standing groove 844 that sets up to "Contraband" shape, and the height of standing groove 844 is 1.1 to 1.15 times of slider 942 height, the utility model discloses in, the height of standing groove 844 is 1.1 times of slider 942 height, can be convenient for slider 942 in spout 841 the installation and dismantle.

Referring to fig. 3, a cylinder 842 is fixedly arranged on the inner wall surface of one end of the water outlet pipe 84 close to the flange 85, the cylinder 842 includes a telescopic rod 843, one end of the telescopic rod 843 far away from the flange 85 is fixedly connected with a slider 942, and the telescopic motion of the telescopic rod 843 drives the slider 942 to perform lifting motion in the chute 841, so as to control the opening and closing of the first movable door 91 and the second movable door 92. When the liquefied water is stored to a certain volume, the cylinder 842 controls the extension of the telescopic rod 843, the sliding block 942 slides in the sliding groove 841 in the direction that the sliding groove 841 is far away from the cylinder 842, the first movable door 91 and the second movable door 92 are pushed open, and the water in the water outlet pipe 84 close to the inner part of one end of the cylinder 842 can be discharged into the water outlet pipe 84 and then enter the storage box 86.

The implementation principle of the above embodiment is as follows: the water pump 883 extracts the water in the water tank 1, and the water in the water tank 1 is treated by the deaerator 2 before entering the water pump 883, and the water is heated to the saturation temperature corresponding to the working pressure of the deaerator 2, so that the oxygen and other gases dissolved in the water are removed. The feed pump 3 pumps the water after the removal of oxygen into the boiler 4, the boiler 4 heats the water into high-pressure steam, and the turbine 5 converts the energy of the high-pressure steam into mechanical power to be used as a prime mover for power generation. A part of the surplus steam of the steam turbine 5 enters the steam exhaust pipe 8, and the high-pressure steam in the steam exhaust pipe 8 is sent to the first connecting pipe 51 through the suction pump 821 and recycled by the steam turbine 5 again. A part of steam in the steam exhaust pipe 8 can be liquefied when being cooled, the liquefied water enters the storage box 86 through the water outlet pipe 84 to be stored, and after a certain amount of water is stored, the stored water is pumped into the water tank 1 through the water pump 88, so that the water is recycled, and the energy is saved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a surplus vapour cyclic utilization device of boiler feed pump, includes water tank (1), oxygen-eliminating device (2), feed pump (3), boiler (4) and steam turbine (5) that connect gradually, its characterized in that: boiler (4) with it is provided with first connecting pipe (51) to connect between steam turbine (5), steam turbine (5) are connected with power generation system (7) and exhaust pipe (8), steam turbine (5) with power generation system (7) electricity is connected, be provided with aspiration pump (821) on exhaust pipe (8), aspiration pump (821) are kept away from the one end of exhaust pipe (8) with first connecting pipe (51) communicate with each other, exhaust pipe (8) set up to "Y" type, exhaust pipe (8) are close to the position intercommunication on ground and are provided with outlet pipe (84), outlet pipe (84) with exhaust pipe (8) communicate with each other, outlet pipe (84) are kept away from the one end of exhaust pipe (8) with water tank (1) top is connected.

2. The residual steam recycling device of the boiler feed water pump according to claim 1, characterized in that: the steam exhaust pipe (8) with be provided with flange (85) between outlet pipe (84), outlet pipe (84) are kept away from the one end connection of flange (85) is provided with containing box (86), containing box (86) with it is provided with second connecting pipe (87) to connect between water tank (1), be provided with water pump (88) on second connecting pipe (87).

3. The residual steam recycling device of the boiler feed water pump according to claim 2, characterized in that: the inner cavity of the water outlet pipe (84) is provided with a movable sealing door (9), the movable sealing door (9) comprises a first movable door (91) and a second movable door (92), the first movable door (91) and the second movable door (92) are fan-shaped, the curved edge of the first movable door (91) and the curved edge of the second movable door (92) are both attached to the inner wall of the water outlet pipe (84), the straight edges of the first movable door (91) and the second movable door (92) are hinged to each other to form a support pillar (93), two ends of the support pillar (93) are fixed to the inner wall surface of the water outlet pipe (84) respectively, and a connecting piece (94) is connected between the first movable door (91) and the second movable door (92) and the inner wall of the water outlet pipe (84).

4. The residual steam recycling device of the boiler feed water pump according to claim 3, characterized in that: two connecting piece (94) all include bracing piece (941) and slider (942), first dodge gate (91) with second dodge gate (92) are close to the one side of flange (85) respectively with two the one end of bracing piece (941) is articulated, two the other end of bracing piece (941) respectively with two slider (942) is articulated, outlet pipe (84) are close to spout (841) have all been seted up on the internal face relative position of flange (85), two slider (942) respectively with two spout (841) cooperation is connected, outlet pipe (84) are close to fixedly on the internal face of flange (85) one end be equipped with cylinder (842), cylinder (842) include telescopic link (843), telescopic link (843) are kept away from the one end of flange (85) with slider (942) fixed connection.

5. The residual steam recycling device of the boiler feed water pump according to claim 4, characterized in that: the cross sections of the two sliding blocks (942) are both in an I shape, the cross sections of the two sliding grooves (841) are both in a T shape, and the two sliding blocks (942) are respectively matched and connected with the two sliding grooves (841).

6. The residual steam recycling device of the boiler feed water pump according to claim 5, characterized in that: one end of each of the two sliding chutes (841) far away from the air cylinder (842) extends to form a placement groove (844) in an 'Contraband' shape, and the height of the placement groove (844) is 1.1 to 1.15 times of the height of the slider (942).

7. The residual steam recycling device of the boiler feed water pump according to claim 3, characterized in that: rubber layers (95) are arranged on the periphery of the first movable door (91) and the periphery of the second movable door (92).

8. The residual steam recycling device of the boiler feed water pump according to claim 6, characterized in that: first dodge gate (91) with all be provided with gravity inductor (96) on second dodge gate (92), containing box (86) are close to the one side of outlet pipe (84) is provided with controller (6), gravity inductor (96) with cylinder (842) all with controller (6) electricity is connected.