Steam turbine condensed water recovery device

Abstract

The utility model belongs to the technical field of steam turbines, and particularly relates to a steam turbine condensed water recovery device which comprises a tank bottom and a tank body, flange plates are fixedly connected to the outer sides of the butt joint positions of the tank bottom and the tank body, the tank bottom and the tank body are detachably fixed through the flange plates, and the bottom of the tank bottom is communicated with a condensed water recovery pipe. An exhaust pipe is rotationally and hermetically mounted in the center of the top of the tank body, an air inlet pipe is rotationally connected to the bottom end of the exhaust pipe through a sealing swivel joint, one end of the air inlet pipe penetrates through the tank bottom and extends to the outer side, and a plurality of condensers are detachably and fixedly connected to the outer side of the exhaust pipe; according to the utility model, the traditional cooling scheme of a cooling tube bundle is abandoned, the volume and the cost of the device are reduced, the sponge is used for replacing the traditional cooling tube bundle, and the sponge has higher porosity, so that the cooling effect of the device is improved, and the cooling effect of the device is improved. And meanwhile, steam can pass through conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steam turbine, concretely relates to a steam turbine condensate recovery device. BACKGROUND

[0002] The condenser for traditional steam turbine is huge in size, is internally provided with a plurality of cooling pipe bundles, is expensive in cost, and provides the condenser with endless circulating cooling water, so that the cooling water flows in the cooling pipe bundles and carries away the heat of steam, thereby ensuring that the steam can be continuously condensed into water in the condenser. Since the number of the cooling pipe bundles is too large, the probability of damage is high, it is difficult to accurately find the damaged position, and the maintenance is difficult and requires high technical level. After the cooling pipe bundle is damaged, the cooling water will be mixed into the condensate, thereby deteriorating the water quality of the condensate during condensate recovery. SUMMARY

[0003] To solve the problems in the background, the utility model provides a steam turbine condensate recovery device, which has the characteristics of reducing the size and cost of the device.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a steam turbine condensate recovery device, comprising a tank bottom and a tank body, flange plates are fixedly connected to the outer sides of the abutting positions of the tank bottom and the tank body, the tank bottom and the tank body are detachably fixed through the flange plates, a condensate recovery pipe is communicated with the bottom of the tank bottom, a gas exhaust pipe is rotatably and sealingly installed at the central position of the top of the tank body, a gas inlet pipe is rotatably connected to the bottom end of the gas exhaust pipe through a sealing rotary joint, one end of the gas inlet pipe penetrates through the tank bottom and extends to the outside, a plurality of condensers are detachably fixedly connected to the outer side of the gas exhaust pipe, a gas exhaust hole is formed in the inner space of the condenser, and an atomizing nozzle is fixedly installed at one end of the tank body to cover the water mist of the condenser.

[0005] As a preferred steam turbine condensate recovery device of the utility model, the top end of the gas exhaust pipe is sealed, and an internal hexagonal counterbore is formed in the top end of the gas exhaust pipe.

[0006] As a preferred steam turbine condensate recovery device of the utility model, one end of the recovery pipe is provided in the structure of a water trap elbow.

[0007] As a preferred steam turbine condensate recovery device of the utility model, the condenser comprises a gas-permeable retaining shell, a sponge, a retaining cover, and a sealing plate, the inner side of the bottom end of the retaining shell is fixedly connected with the sealing plate, the outer side of one end of the retaining shell is detachably fixed with the retaining cover, and the sponge is installed between the outer side of the retaining shell and the inner side of the retaining cover.

[0008] As a preferred steam turbine condensate recovery device of the utility model, a plurality of water leakage holes are formed in the bottom plate of the retaining shell.

[0009] As the utility model discloses a steam turbine condensate recovery device preferably, the bottom edge of the retaining shell is provided with an upwardly bent folding edge, and the inner wall surface of the folding edge is attached to the retaining cover.

[0010] As the utility model discloses a steam turbine condensate recovery device preferably, the retaining shell and the sealing plate are detachably fixed to the outer end face of the exhaust pipe through the mounting sleeve.

[0011] As the utility model discloses a steam turbine condensate recovery device preferably, the exhaust holes of the exhaust pipe in the same condenser internal space are staggered.

[0012] Compared with the prior art, the utility model has the advantages that the utility model discloses a steam turbine condensate recovery device discards the traditional cooling pipe bundle cooling scheme, reduces the size and cost of the device, and uses a sponge instead of the traditional cooling pipe bundle, so that the steam can pass through the sponge. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.

[0014] Figure 1 It is the whole structure schematic view of the utility model;

[0015] Figure 2 It is the connecting structure schematic view of the condenser in the utility model;

[0016] Figure 3 It is the whole structure cross-sectional view of the utility model;

[0017] Figure 4 It is the explosion drawing of the condenser in the utility model;

[0018] In the drawing:

[0019] 1, tank bottom;2, tank body;3, flange plate;4, recovery pipe;5, inlet pipe;6, exhaust pipe;61, exhaust hole;62, sealing swivel joint;7, atomizing nozzle;8, condenser;

[0020] 801, retaining shell;802, folding edge;803, water leakage hole;804, sealing plate;805, sponge;806, retaining cover;807, mounting sleeve. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0022] As Figures 1-4 shown:

[0023] A steam turbine condensate water recovery device, including tank bottom 1 and tank body 2, the butt joint of tank bottom 1 and tank body 2 outside is fixedly connected with flange plate 3, tank bottom 1 and tank body 2 are detachably fixed through flange plate 3, the bottom of tank bottom 1 is communicated with condensate water recovery pipe 4, the top central position of tank body 2 is rotatably and sealingly installed with exhaust pipe 6, the bottom end of exhaust pipe 6 is rotatably connected with air inlet pipe 5 through sealing swivel joint 62, one end of air inlet pipe 5 passes through tank bottom 1 and extends to the outside, a plurality of condensers 8 are detachably fixedly connected to the outside of exhaust pipe 6, exhaust hole 61 is formed in the internal space of condenser 8, atomizing nozzle 7 is fixedly installed at one end of tank body 2, which covers the water mist of condenser 8.

[0024] In the embodiment, the condenser for traditional steam turbine is huge in volume, and is internally provided with a plurality of cooling pipe bundles, which are expensive in cost and price, provide the condenser with endless circulating cooling water, make the cooling water flow in the cooling pipe bundles, take away the heat of steam, ensure that steam can continuously condense into water in the condenser, due to too many cooling pipe bundles, the probability of damage is large, it is difficult to accurately find the damaged position, and it is difficult to repair and has high repair technical requirements, after the cooling pipe bundle is damaged, the cooling water will mix into the condensate water, which deteriorates the water quality of the condensate water during condensate water recovery, the water in the cooling pipe bundle continuously circulates, so that the water impurities in the cooling pipe bundle are more.

[0025] The utility model discloses a discard traditional cooling pipe bundle cooling scheme, reduce the volume and cost of device, replace traditional cooling pipe bundle through sponge 805, and sponge 805 has higher porosity, can be favorable to the steam passing through simultaneously, first need to use clean water source to carry out the cooling of sponge 805, make sponge 805 keep target temperature continuously, when steam passes through sponge 805, is influenced by the higher porosity of sponge 805, can make steam cooling quickly, thereby make steam condense into water, this is because the porosity of sponge 805 is higher, and the aperture is small, improve the contact efficiency of steam and cooling water, and the efficiency of direct contact with steam of traditional cooling pipe bundle is lower, therefore traditional condenser realizes through increasing volume and then increasing the quantity of cooling pipe bundle, and the heat exchange efficiency of traditional cooling pipe bundle is lower, steam and cooling clean water directly contact, and the heat exchange efficiency is high, and the clean water source that carries out the cooling of sponge 805 can use the condensed water after processing and cooling;

[0026] Sponge 805 needs to use high-temperature resistant, aging-resistant sponge 805, such as inorganic fiber sponge 805, can usually resist 400 DEG C to 600 DEG C even higher temperature, and will not produce harmful substance precipitation;

[0027] Cooling water and steam are easy to remain in sponge 805, after sponge 805 is saturated, the condensation effect of steam will be greatly reduced, therefore, in the work, need constantly rotate sponge 805, through centrifugal force make too much water in sponge 805 throw out, and continuously spray clean cooling water to sponge 805 to exchange heat with steam, make steam condense into water, to this keep balance;

[0028] Due to the high porosity of sponge 805 and small aperture, the structure itself also has certain condensation effect, after steam passes through the porosity of sponge 805, the porosity in sponge 805 is complex, under the action of centrifugal force, smaller volume steam molecules will flow along the interlaced porosity of sponge 805, form large volume steam molecules through the tension between water molecules, finally form water droplets with certain mass, can be directly thrown out under the action of centrifugal force, thereby realize the efficient recovery of condensed water, through the centrifugal rotation of sponge 805 and the cooling of cooling water, the temperature of water condensed after steam can be higher than that of water condensed by traditional cooling pipe bundle, thereby reducing the loss of heat;

[0029] The top of the exhaust pipe 6 is provided with an internal hexagonal counterbore, which can be matched with a power device, so as to drive the exhaust pipe 6 to rotate through an external power, and the exhaust pipe 6 drives the condenser 8 to rotate;

[0030] The steam is introduced outside the air inlet pipe 5, and enters the air exhaust pipe 6 along the air inlet pipe 5, and is finally discharged from the air exhaust hole 61 of the air exhaust pipe 6 to the internal space of the condenser 8, i.e. between the holding shell 801 and the sealing plate 804, the steam entering this part can only pass through the holding shell 801 and the sponge 805 and then be discharged from the condenser 8. The outer end of the recovery pipe 4 is connected to a vacuum pump, and the gas in the tank body 2 is pumped out by the vacuum pump, so that the tank body 2 has a target vacuum degree, and the discharge of condensed water is facilitated. Since the sponge 805 is semispherical, the steam passing through or passing through the sponge 805 has a tendency to flow along the cross section of the sponge 805, thereby further improving the condensation effect of the steam.

[0031] When the device needs to be repaired or the sponge 805 needs to be replaced, the power device is separated, the nuts on the flange plate 3 are disassembled, the tank body 2 is moved upward along the axis of the air exhaust pipe 6, the tank body 2 is disassembled, and then the condenser 8 is disassembled one by one, so that the device can be repaired or the sponge 805 can be replaced.

[0032] In an optional embodiment, the top end of the air exhaust pipe 6 is sealed, and a hexagonal counterbore is formed in the top end of the air exhaust pipe 6 inwardly. The hexagonal counterbore is beneficial to connection with the power device.

[0033] In an optional embodiment, one end of the recovery pipe 4 is provided with a water trap structure. The water trap structure can make the air flow in the tank body 2 more uniform when the air is pumped out.

[0034] In an optional embodiment, the condenser 8 comprises a gas-permeable holding shell 801, a sponge 805, a retaining cover 806 and a sealing plate 804. The bottom end of the holding shell 801 is fixedly connected with the sealing plate 804 inwardly, one end of the holding shell 801 is detachably fixed with the retaining cover 806 outwardly, and the sponge 805 is installed between the outer side of the holding shell 801 and the inner side of the retaining cover 806. The retaining cover 806 can keep the sponge 805 in a basic shape when the condenser 8 rotates, and also plays a role in fixing the sponge 805. The sealing plate 804 is arranged to make the steam pass through the sponge 805 and then be discharged from the condenser 8.

[0035] In an optional embodiment, a plurality of water leakage holes 803 are formed in the bottom plate of the holding shell 801. The condensed water passing through the sponge 805 flows downward through the water leakage holes 803 into the tank bottom 1 and the recovery pipe 4.

[0036] In an alternative embodiment, the bottom edge of the holding shell 801 is provided with an upwardly bent flange 802, the inner wall surface of the flange 802 is in contact with the holding cover 806, this connection can improve the connection stability of the holding cover 806, avoid vibration when the holding cover 806 rotates, and the flange 802 is also beneficial to the fixation of the holding cover 806 by screws.

[0037] In an alternative embodiment, one end of the holding shell 801 and the sealing plate 804 are detachably fixed to the outer end surface of the exhaust pipe 6 through a mounting sleeve 807, and the mounting sleeve 807 is fixed to the exhaust pipe 6 by screws.

[0038] In an alternative embodiment, the exhaust holes 61 of the exhaust pipe 6 located in the same condenser 8 internal space are staggered, and the staggered arrangement of the exhaust holes 61 is beneficial to improve the structural strength of the exhaust pipe 6 when rotating.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A steam turbine condensate recovery device, characterized in that: The tank includes a bottom (1) and a body (2). Flanges (3) are fixedly connected to the outside of the joint between the bottom (1) and the body (2). The bottom (1) and the body (2) are detachably fixed by the flanges (3). The bottom of the bottom (1) is connected to a condensate recovery pipe (4). An exhaust pipe (6) is rotatably and sealed at the center of the top of the body (2). An air inlet pipe (5) is rotatably connected to the bottom of the exhaust pipe (6) through a sealed rotary joint (62). One end of the air inlet pipe (5) passes through the bottom (1) and extends to the outside. Several condensers (8) are detachably and fixedly connected to the outside of the exhaust pipe (6). An exhaust hole (61) is opened in the internal space of the exhaust pipe (6) and an atomizing nozzle (7) covering the water mist of the condenser (8) is fixedly installed at one end of the body (2).

2. The turbine condensate recovery device according to claim 1, characterized in that: The top of the exhaust pipe (6) is sealed, and the top of the exhaust pipe (6) is provided with an internal hexagonal countersunk hole.

3. The turbine condensate recovery device according to claim 1, characterized in that: One end of the recycling pipe (4) is configured as a water trap.

4. The turbine condensate recovery device according to any one of claims 1-3, characterized in that: The condenser (8) includes a breathable retaining shell (801), a sponge (805), a retaining cover (806), and a sealing plate (804). The sealing plate (804) is fixedly connected to the inner side of the bottom end of the retaining shell (801). The retaining cover (806) is detachably fixed to the outer side of one end of the retaining shell (801). A sponge (805) is installed between the outer side of the retaining shell (801) and the inner side of the retaining cover (806).

5. The turbine condensate recovery device according to claim 4, characterized in that: Several drainage holes (803) are provided at the bottom plate of the housing (801).

6. The turbine condensate recovery device according to claim 4, characterized in that: The bottom edge of the retaining housing (801) is provided with an upwardly bent flange (802), and the inner wall surface of the flange (802) is in contact with the retaining cover (806).

7. The turbine condensate recovery device according to claim 4, characterized in that: One end of the housing (801) and the sealing plate (804) are detachably fixed to the outer end face of the exhaust pipe (6) via the mounting sleeve (807).

8. The turbine condensate recovery device according to claim 1, characterized in that: The exhaust pipe (6) is located in the same condenser (8) and the exhaust port (61) is staggered.

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