Steam turbine drain flash tank

Abstract

The utility model discloses a steam turbine drain flash tank, which comprises a bottom plate and further comprises a discharge unit, a water tank, a water tank, a water tank, a water tank, a water tank and a water tank, and the discharge unit is arranged at the upper end of the bottom plate and used for discharging cooling water; the expansion unit comprises an expansion assembly which is arranged at the upper end of the bottom plate, located on one side of the discharge unit and used for expanding the drainage space, and a flow control assembly which is arranged at the upper end of the expansion assembly and used for adjusting the water inlet speed of drainage. A worker adjusts a flow control assembly to control the water inlet speed of cooling water according to the steam temperature in a flash tank body, if the steam temperature in the flash tank body is too high, the flow control assembly increases the water inlet speed of the cooling water, and if the steam temperature in the flash tank body is normal, the flow control assembly keeps the water inlet speed of the cooling water. Therefore, the temperature of steam in the flash tank body can be well balanced, thermal shock caused by rapid heating of a pipeline of the condensing pipe is avoided, and the service life of the condenser is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine auxiliary equipment technical field, concretely is a steam turbine drainage expansion vessel. BACKGROUND

[0002] Steam turbine drainage expansion vessel is by shell, many cooling water inlet pipes and steam water separation device, and its main role includes reducing heat and steam water loss, recycling working medium, reducing pressure, reducing noise and discharging drainage etc.

[0003] The main steam temperature is as high as 540 DEG C in the use process of the prior art drainage expansion vessel, and the lower one is above 150 DEG C, and directly drains to the drainage expansion vessel and then to the condenser, which can make the pipeline of the condenser sharply heated and produce thermal shock, in addition, too many hot steam into the condenser can cause the temperature of the condenser to rise, shorten the service life of the condenser, therefore, it is necessary to improve the above-mentioned defects.

[0004] The above content is only used to assist understanding the technical scheme of the present application, and does not represent the acknowledgement of the above content is the closest prior art. UTILITY MODEL CONTENT

[0005] The utility model discloses a steam turbine drainage expansion vessel, to solve the prior art drainage expansion vessel in the use process exists because the pipeline of the condenser sharply heated and produce thermal shock, too many hot steam into the condenser can cause the temperature of the condenser to rise, and then shorten the service life of the condenser problem.

[0006] To realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A steam turbine drainage expansion vessel, including bottom plate, still includes:

[0008] The discharge unit includes the discharge unit for discharging cooling water on the upper end of the bottom plate.

[0009] Expansion unit, including being located at the upper end of the bottom plate and being located at the one side of the discharge unit for the expansion assembly for the expansion of the drainage space, the flow control assembly for the water inlet speed of the drainage is adjusted on the upper end of the expansion assembly.

[0010] Further, the expansion assembly includes:

[0011] Expansion vessel body, install on the upper end of the bottom plate;

[0012] The exhaust pipe is located at one side of the expansion vessel body and is communicated with the inside of the expansion vessel body, and is used for discharging the residual steam in the expansion vessel;

[0013] A hydrophobic water inlet pipe is arranged on the side of the expansion vessel body opposite to the exhaust pipe, and is used to guide the hydrophobic water into the expansion vessel body.

[0014] Further, the flow control assembly comprises:

[0015] A cooling pipe is fixedly connected to the upper end of the expansion vessel body.

[0016] A plurality of cooling water inlet pipes are arranged and are sequentially communicated from the side of the cooling pipe to the inside of the expansion vessel body.

[0017] A slot is extended from the upper end of the cooling pipe to the inside of the cooling pipe, and the cooling water inlet pipes all pass through the inside of the slot.

[0018] A valve is slidingly inserted into the inside of the slot and is used to block the cooling water inlet pipes.

[0019] Further, the lower end of the cooling pipe is fixedly connected with an extension pipe corresponding to the cooling water inlet pipe, and the extension pipe is communicated with the outlet of the cooling water inlet pipe.

[0020] A plurality of water injection ports are arranged on the lower part of the extension pipe and are used to disperse and inject the cooling water into the inside of the expansion vessel body.

[0021] Further, a retreat groove is arranged on the inside of the valve close to the two sides.

[0022] A limiting block is slidingly inserted into the inside of the retreat groove.

[0023] A clamping spring is arranged on one end of the limiting block and is located in the inside of the retreat groove and is used to tightly press the limiting block.

[0024] A clamping shaft is fixedly connected to the end of the limiting block opposite to the clamping spring, a clamping groove corresponding to the clamping shaft is arranged on the inside of the slot, and the clamping shaft is clamped.

[0025] The clamping groove corresponds to the cooling water inlet pipe.

[0026] Further, the slot is arranged in an arc shape, and one end of the clamping shaft is arranged as an arc surface and corresponds to the slot.

[0027] Further, the discharge unit comprises:

[0028] A water outlet pipe is connected to the lower end of the expansion vessel body and is communicated with the inside of the expansion vessel body.

[0029] A water pump is connected to one side of the water outlet pipe and is used to discharge the water at the bottom of the expansion vessel body.

[0030] A water tank is installed on the upper end of the bottom plate, and the water outlet end of the water pump is provided with a conveying pipe communicated with the inside of the water tank.

[0031] Compared with the prior art, the utility model has the beneficial effects that:

[0032] 1、 the utility model discloses a cooling water inlet speed is adjusted to the control flow subassembly according to the steam temperature in the expansion vessel body inside by staff, if the steam temperature in the expansion vessel body inside is too high, then the control flow subassembly increases the cooling water inlet speed, if the steam temperature in the expansion vessel body inside is normal, then the control flow subassembly keeps the cooling water inlet speed, thereby can the steam temperature in the expansion vessel body inside is balanced well, avoids the pipeline of condensing pipe and produces thermal shock to heat sharply, prolongs the life of condenser. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is whole structure schematic diagram of the utility model;

[0034] Figure 2 It is discharge unit structure schematic diagram of the utility model;

[0035] Figure 3 It is expansion unit internal structure schematic diagram of the utility model;

[0036] Figure 4 It is the utility model in Figure 3 Place A's close-up;

[0037] Figure 5 It is the cooperation relation diagram of valve and cooling pipe of the utility model;

[0038] Figure 6 It is the utility model in Figure 5 Place B's close-up.

[0039] Sign significance: 100, bottom plate;1, discharge unit;11, water outlet pipe;12, water pump;13, conveying pipe;14, water tank;2, expansion unit;21, control flow subassembly;211, cooling pipe;2111, slot;2112, clamping groove;212, cooling water inlet pipe;213, valve;2131, lift hole;2132, clamping shaft;2133, limit block;2134, tight spring;2135, retreat position slot;214, extension pipe;2141, water jet;22, expansion assembly;221, expansion vessel body;222, exhaust pipe;223, drain water inlet pipe. DETAILED DESCRIPTION

[0040] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the present utility model.

[0041] Please refer to Figures 1-6 The present utility model provides a technical scheme:

[0042] A steam turbine drainage expansion vessel, comprising a bottom plate 100, further comprising:

[0043] The discharge unit 1 comprises a discharge unit 1 arranged at the upper end of the bottom plate 100 for discharging cooling water.

[0044] The expansion unit 2 comprises an expansion assembly 22 arranged at the upper end of the bottom plate 100 and located at one side of the discharge unit 1 for expanding the drainage space, and a flow control assembly 21 arranged at the upper end of the expansion assembly 22 for adjusting the water inflow speed of the drainage.

[0045] It should be noted that: as the drainage is continuously injected into the expansion assembly 22, the staff adjusts the water inflow speed of the cooling water by the flow control assembly 21 according to the steam temperature in the expansion vessel body 221, if the steam temperature in the expansion vessel body 221 is too high, the flow control assembly 21 increases the water inflow speed of the cooling water, if the steam temperature in the expansion vessel body 221 is normal, the flow control assembly 21 keeps the water inflow speed of the cooling water, so as to well balance the steam temperature in the expansion vessel body 221, avoid the heat shock caused by the sharp heating of the condenser pipe, and prolong the service life of the condenser.

[0046] As an improvement, as shown in Figures 1-2 The expansion assembly 22 comprises:

[0047] The expansion vessel body 221 is installed at the upper end of the bottom plate 100.

[0048] The exhaust pipe 222 is arranged at one side of the expansion vessel body 221 and connected with the inside of the expansion vessel body 221, for discharging the residual steam in the expansion vessel.

[0049] The drainage water inlet pipe 223 is arranged at the side of the expansion vessel body 221 opposite to the exhaust pipe 222, for guiding the drainage into the expansion vessel body 221.

[0050] Further, as shown in Figures 2-3 The flow control assembly 21 comprises:

[0051] The cooling pipe 211 is fixedly connected at the upper end of the expansion vessel body 221.

[0052] The cooling water inlet pipe 212 is provided with multiple groups, which are communicated to the inside of the expansion vessel body 221 from the side of the cooling pipe 211 in sequence;

[0053] The slot 2111 is extended to the inside of the cooling pipe 211 from the upper end of the cooling pipe 211, and the cooling water inlet pipe 212 passes through the inside of the slot 2111;

[0054] The valve 213 is slidingly inserted into the slot 2111, and is used for plugging the cooling water inlet pipe 212;

[0055] Preferably, the upper part of the valve 213 is provided with a lifting hole 2131 for facilitating lifting of the valve 213.

[0056] Further, as shown in the figure, the lower end of the cooling pipe 211 is fixedly connected with an extension pipe 214 corresponding to the cooling water inlet pipe 212, and the extension pipe 214 is communicated with the outlet of the cooling water inlet pipe; Figures 3-4

[0057] The water outlet 2141 is provided with multiple groups at the lower part of the extension pipe 214, and is used for dispersing and spraying the cooling water in the inside of the expansion vessel body 221.

[0058] Among them, the valve 213 is provided with a retreat slot 2135 close to both sides in the inside;

[0059] The retreat slot 2135 is slidingly inserted with a limiting block 2133 in the inside;

[0060] One end of the limiting block 2133 located in the inside of the retreat slot 2135 is provided with a tightening spring 2134 for tightly pressing the limiting block 2133;

[0061] The other end of the limiting block 2133 opposite to the tightening spring 2134 is fixedly connected with a clamping shaft 2132, and the inside of the slot 2111 is provided with a clamping slot 2112 corresponding to the clamping shaft 2132, which is used for clamping the clamping shaft 2132;

[0062] The clamping slot 2112 corresponds to the cooling water inlet pipe 212.

[0063] In addition, as shown in the figure, the slot 2111 is arranged in an arc shape, and one end of the clamping shaft 2132 is provided with an arc surface corresponding to the slot 2111. Figures 5-6

[0064] As an improvement, as shown in the figure, the discharge unit 1 comprises: Figure 1

[0065] The water outlet pipe 11 is connected to the lower end of the expansion vessel body 221 and is communicated with the inside of the expansion vessel body 221; ​​​

[0066] A water pump 12 is connected to one side of the water outlet pipe 11 and used to discharge water at the bottom of the expander body 221.

[0067] A water tank 14 is installed on the upper end of the bottom plate 100, and the water outlet end of the water pump 12 is provided with a conveying pipe 13 connected to the inside of the water tank 14.

[0068] It should be noted that the expander body 221 in the utility model is provided with a temperature display for displaying the temperature inside the expander body 221, which is not shown in the figure.

[0069] It should be noted that: Figures 1-3 As shown in the figure, as the water drain inlet pipe 223 injects water drain into the expander body 221, the staff pulls the valve 213 up and down along the slot 2111 according to the steam temperature inside the expander body 221, if the steam temperature inside the expander body 211 is too high, pull the valve 213 up along the slot 2111, so that the number of blocked cooling water inlet pipes 212 is reduced, and the water inlet speed of the cooling water is accelerated, the high-temperature water drain entering the expander 221 from the water drain inlet pipe 223 is quickly cooled by the cooling water, and a small amount of residual steam is discharged into the condensing pipe along the exhaust pipe 222, which ensures that the steam temperature entering the condensing pipe will not cause thermal shock to the cooling pipe of the condensing pipe, thereby prolonging the service life of the condenser.

[0070] As shown in the figure, Figures 4-6 In which, with each upward pull of the valve 213, the clamping shaft 2132 moves along the inner wall of the slot 2111 from the last set of clamping grooves 2112 to the next set of clamping grooves 2112 under the guidance of the arc-shaped end of the clamping groove 2112 and is clamped in the next set of clamping grooves 2112 under the clamping action of the clamping spring 2134.

[0071] As shown in the figure, Figures 3-4 In addition, the utility model sets multiple water outlets 2141 at the lower end of the extension pipe 214, so that the cooling water entering the expander body 221 can be dispersed under the action of the multiple water outlets 2141, and the dispersed cooling water can be fully mixed with the water drain in the expander body 221, so that the mixing of the cooling water and the water drain is more uniform.

[0072] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0073] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A steam turbine drain flash tank comprising a floor (100), characterised in that, Also include: The exhaust unit (1) includes the exhaust unit (1) arranged on the upper end of the bottom plate (100) for discharging cooling water; Expansion unit (2), including the expansion component (22) arranged on the upper end of the bottom plate (100) and located on one side of the exhaust unit (1) for expanding the hydrophobic space, the flow control component (21) arranged on the upper end of the expansion component (22) for adjusting the water inlet speed of the hydrophobic; The expansion component (22) comprises: Expansion vessel body (221) mounted on the upper end of the bottom plate (100); Exhaust pipe (222) arranged on one side of the expansion vessel body (221) and connected with the inside of the expansion vessel body (221), for discharging the steam remaining in the expansion vessel; Hydrophobic water inlet pipe (223) arranged on the side of the expansion vessel body (221) opposite the exhaust pipe (222), for guiding the hydrophobic water into the expansion vessel body (221); The flow control component (21) comprises: Cooling pipe (211) fixedly connected to the upper end of the expansion vessel body (221); Cooling water inlet pipe (212) is provided with multiple groups, which are communicated from the side of the cooling pipe (211) to the inside of the expansion vessel body (221) in turn; The slot (2111) extends from the upper end of the cooling pipe (211) to the inside of the cooling pipe (211), and the cooling water inlet pipe (212) passes through the inside of the slot (2111); Valve (213) is slidably inserted into the slot (2111), for plugging the cooling water inlet pipe (212).

2. The steam turbine hydrophobic expansion vessel of claim 1, wherein: The lower end of the cooling pipe (211) is fixedly connected with the extension pipe (214) corresponding to the cooling water inlet pipe (212), and the extension pipe (214) is connected with the outlet of the cooling water inlet pipe; Water jet (2141) is provided with multiple groups on the lower part of the extension pipe (214), for dispersing the cooling water in the expansion vessel body (221).

3. The steam turbine hydrophobic expansion vessel of claim 1, wherein: The valve (213) is provided with a retreat slot (2135) near the two sides inside the valve (213); The retreat slot (2135) is slidably inserted into the retreat slot (2135); The one end of the limit block (2133) and the inside of the retreat slot (2135) are provided with a tightening spring (2134) for tightly pressing the limit block (2133); The one end of the limit block (2133) opposite the tightening spring (2134) is fixedly connected with the clamping shaft (2132), and the inside of the slot (2111) is provided with the clamping slot (2112) corresponding to the clamping shaft (2132), for clamping the clamping shaft (2132); The clamping slot (2112) corresponds to the cooling water inlet pipe (212).

4. The steam turbine hydrophobic expansion vessel of claim 3, wherein: The slot (2111) is arranged in an arc shape, and one end of the clamping shaft (2132) is provided with an arc surface corresponding to the slot (2111).

5. The steam turbine hydrophobic expansion vessel of claim 1, wherein: The discharge unit (1) comprises: a water outlet pipe (11) connected to the lower end of the expansion vessel body (221) and communicating with the interior of the expansion vessel body (221); a water pump (12) connected to one side of the water outlet pipe (11) and used for discharging water at the bottom of the expansion vessel body (221); a water tank (14) mounted on the upper end of the bottom plate (100), and the water outlet end of the water pump (12) is provided with a conveying pipe (13) communicating with the interior of the water tank (14).

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