Device for balancing water levels of hot wells at two sides of condenser

Abstract

Disclosed in the present invention is a device for balancing water levels of hot wells at two sides of a condenser in the technical field of coal-fired power generation. The device comprises a water level conveying unit, which comprises a motor-side condenser hot well and a steam turbine-side condenser hot well which are symmetrically arranged in the horizontal direction, two communicating pipes respectively arranged below the motor-side condenser hot well and the steam turbine-side condenser hot well, sensing valves connected to the tail end of each communicating pipe, an expansion vessel arranged between the two sensing valves, a centrifugal pump arranged below the expansion vessel, and two conveying pipes extending outwards from two sides of the centrifugal pump and respectively communicated with the motor-side condenser hot well and the steam turbine-side condenser hot well. The present invention can keep a balance between the water levels of the hot wells at two sides of the condenser all the time so as to ensure a vacuum unit and improve unit efficiency, and avoid an excessive water level difference between the two sides due to any reason so as to ensure the safe and stable operation of the unit under any working condition.

Description

A device for balancing water levels on both sides of condenser hot well TECHNICAL FIELD

[0001] The present application relates to the field of coal-fired power generation technology, and in particular to a device for balancing water levels on both sides of condenser hot well. BACKGROUND

[0002] In the process of using a coal-fired power generation unit, direct air cooling is adopted, and the condenser is designed as a double-back pressure. Under the design meteorological conditions and the design heat consumption conditions of the main unit, the average back pressure of the steam turbine is 13.5 kPa. Since the unit is in a double-back pressure operation mode, a vacuum deviation will inevitably occur on both sides of the condenser, thereby affecting the water level of the condenser.

[0003] The water level of the condenser being too high or too low will have the following effects on the unit: 1. During the start-up process of the unit, due to design problems, there will be a large deviation in the water level on both sides of the hot well before grid connection. When the water level is too high, the low bypass valve will be forced to close; 2. When the water level of the condenser is too high to submerge the internal copper pipe, the cooling area of the entire condenser will be reduced, the vacuum of the condenser will be lowered, and the condensate water will be over-cooled. In addition, the condensate water will absorb air, resulting in an increase in the oxygen content of the condensate water and accelerating the corrosion of the internal copper pipe, thereby reducing the service life of the equipment. At the same time, the condensate water temperature will be reduced, causing an increase in coal consumption and affecting the efficiency of the unit. Based on this, in order to solve the above problems, the present application proposes a device for balancing water levels on both sides of condenser hot well to solve such problems.

[0004] SUMMARY

[0005] In view of the problems existing in the prior art, the present application is proposed.

[0006] Therefore, the purpose of the present application is to provide a device for balancing water levels on both sides of condenser hot well, which aims to ensure that the water levels on both sides of the condenser can be kept balanced at any operating condition of the unit, improve the vacuum of the unit, and reduce the oxygen dissolution of the condensate water.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a water level conveying unit, including a motor-side condenser hot well and a turbine-side condenser hot well arranged symmetrically in the horizontal direction, two groups of communication pipes arranged below the motor-side condenser hot well and the turbine-side condenser hot well respectively, a sensing valve connected to the end of each group of communication pipes, an expansion vessel arranged between the two groups of sensing valves, a centrifugal pump arranged below the expansion vessel, and two groups of conveying pipes extending outward from both sides of the centrifugal pump and communicating with the motor-side condenser hot well and the turbine-side condenser hot well respectively; and,

[0008] The water level balancing unit comprises a connecting rod arranged vertically in the communicating pipe, a supporting component arranged at the end of the connecting rod, a limiting component arranged on the connecting rod and fixedly connected to the position where the communicating pipe communicates with the motor-side condenser hot well, a blocking component sleeved on the connecting rod, three groups of supporting components annularly distributed on the supporting component, a locking component correspondingly arranged below each group of the supporting components, and a plurality of groups of floating components annularly arranged at the top end of the connecting rod.

[0009] As a preferred scheme of the device for balancing the water levels on both sides of the condenser hot well, the motor-side condenser hot well and the turbine-side condenser hot well have the same volume and can accommodate the same volume of water, a trumpet-shaped water inlet is arranged at the connection between the motor-side condenser hot well and the conveying pipe, and the trumpet-shaped opening of the water inlet is directed towards the inside of the motor-side condenser hot well.

[0010] As a preferred scheme of the device for balancing the water levels on both sides of the condenser hot well, the motor-side condenser hot well and the turbine-side condenser hot well are connected to the expander through the corresponding communicating pipes and sensing valves, a pipeline is connected between the sensing valve and the expander, the centrifugal pump is a bidirectional centrifugal pump, and two groups of the conveying pipes are respectively connected to the bidirectional outlets of the centrifugal pump.

[0011] As a preferred scheme of the device for balancing the water levels on both sides of the condenser hot well, the connecting rod is a hexagonal prism structure, and the connecting rod sequentially passes through the limiting component and the blocking component from top to bottom, the blocking component is slidably connected to the connecting rod as a whole, and the blocking component is limited in the circumferential direction of the connecting rod.

[0012] As a preferred scheme of the device for balancing the water levels on both sides of the condenser hot well, the supporting component comprises a bottom disc fixedly connected to the end of the connecting rod, three groups of connecting frames vertically and annularly distributed on the bottom disc, connecting shafts symmetrically arranged at the top ends of the connecting frames, half-moon pieces correspondingly arranged at the outer ends of each group of the connecting shafts, vertical sliding grooves vertically arranged on the connecting frames and having openings outward, three groups of side supporting springs annularly distributed on the outer side of the bottom disc, and a supporting spring arranged at the top end of the bottom disc and sleeved on the connecting rod.

[0013] As a preferred scheme of the device for balancing the water levels on both sides of the condenser hot well, the limiting component comprises a limiting plate sleeved on the outer side of the connecting rod, three groups of limiting blocks annularly distributed on the outer side of the limiting plate, and a flow-through opening between each two groups of the limiting blocks.

[0014] As a preferred scheme of the device for balancing water levels on both sides of the hot well of the condenser, the blocking component comprises a sliding block sleeved on the connecting rod, a spherical block arranged below the sliding block, three groups of blocking fan blades equally arranged in a ring shape outside the sliding block, and a connecting sliding frame rotatably connected to the center of each group of the blocking fan blades.

[0015] As a preferred scheme of the device for balancing water levels on both sides of the hot well of the condenser, the supporting component comprises two groups of supporting frames symmetrically arranged on both sides of the connecting frame, a sleeve shaft arranged on one end of each group of the supporting frames close to the connecting frame, and the connecting shaft extends into the sleeve shaft, a transverse sliding groove horizontally arranged on the supporting frame, and the ends of the connecting sliding frame extend into the transverse sliding groove in a sliding connection, and a limiting fan blade arranged outside the sleeve shaft.

[0016] As a preferred scheme of the device for balancing water levels on both sides of the hot well of the condenser, the locking component comprises a top plate arranged between the supporting frames and parallel to the connecting frame in a vertical direction, extension rods symmetrically arranged on both sides below the top plate, clamping blocks arranged at the outer ends of each group of the extension rods, sliding blocks arranged below the inner side of the top plate and extending outwardly into the vertical sliding groove, and a return spring arranged on the bottom surface of the sliding block.

[0017] As a preferred scheme of the device for balancing water levels on both sides of the hot well of the condenser, one group of the floating components corresponds to the water inlet, the outer side of the floating component corresponding to the water inlet is provided with a blocking head, the inner end of the blocking head is provided with a blocking shaft, the blocking shaft extends into the blocking head, and a blocking spring is arranged at the end of the blocking shaft.

[0018] The device for balancing water levels on both sides of the hot well of the condenser can maintain the balance of water levels on both sides of the hot well at all times, ensure the vacuum of the unit, improve the efficiency of the unit, and prevent the water levels on both sides from deviating too much due to any reason, thereby ensuring the safe and stable operation of the unit under any working condition. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort. Among them:

[0020] Fig. 1 is a schematic view of the overall structure of the device for balancing water levels on both sides of the hot well of the condenser.

[0021] Figure 2 is an enlarged view of the structure at A in Figure 1 of the device for balancing the water levels on both sides of the hot well of a condenser.

[0022] Figure 3 is an enlarged view of the structure at B in Figure 1 of the device for balancing the water levels on both sides of the hot well of a condenser.

[0023] Figure 4 is a schematic view of the structure of the water level conveying unit of the device for balancing the water levels on both sides of the hot well of a condenser.

[0024] Figure 5 is a schematic view of the structure of part of the water level balancing unit of the device for balancing the water levels on both sides of the hot well of a condenser.

[0025] Figure 6 is a schematic view of the structure of the rest of the water level balancing unit of the device for balancing the water levels on both sides of the hot well of a condenser.

[0026] Figure 7 is a schematic view of the installation position of the limiting component of the device for balancing the water levels on both sides of the hot well of a condenser.

[0027] Figure 8 is a schematic view of the structure of the water level imbalance state of the device for balancing the water levels on both sides of the hot well of a condenser.

[0028] Figure 9 is an enlarged view of the structure at C in Figure 8 of the device for balancing the water levels on both sides of the hot well of a condenser.

[0029] Figure 10 is an enlarged view of the structure at D in Figure 8 of the device for balancing the water levels on both sides of the hot well of a condenser. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings.

[0031] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given in this description. In other instances, well-known methods, procedures and components have not been described in detail so as not to unnecessarily obscure aspects of the present application.

[0032] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0033] Thirdly, the present application is described in detail in combination with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions including length, width and depth should be included in the actual manufacture.

[0034] Embodiment 1

[0035] Referring to FIGS. 1-3, a first embodiment of the present application provides a device for balancing the water levels on both sides of the condenser hot well, which comprises.

[0036] The water level conveying unit 100 comprises the motor-side condenser hot well 101 and the turbine-side condenser hot well 102 which are symmetrically arranged in the horizontal direction, two groups of communication pipes 103 which are correspondingly arranged below the motor-side condenser hot well 101 and the turbine-side condenser hot well 102, respectively, the sensing valves 104 which are connected to the ends of each group of communication pipes 103, the expansion vessels 105 which are arranged between the two groups of sensing valves 104, the centrifugal pumps 106 which are arranged below the expansion vessels 105, and the two groups of conveying pipes 107 which extend outward from both sides of the centrifugal pumps 106 and are in communication with the motor-side condenser hot well 101 and the turbine-side condenser hot well 102, respectively. The sensing valves 104 are pressure-controlled valves which are opened when the pressure is too large and closed when the pressure is too small.

[0037] The water level balancing unit 200 comprises the connecting rods 201 which are arranged vertically in the communication pipes 103, the supporting components 202 which are arranged at the ends of the connecting rods 201, the limiting components 203 which are arranged on the connecting rods 201 and are fixedly connected to the positions where the communication pipes 103 and the motor-side condenser hot well 101 are in communication, the blocking components 204 which are sleeved on the connecting rods 201, the three groups of supporting components 205 which are annularly distributed on the supporting components 202, the locking components 206 which are correspondingly arranged below each group of supporting components 205, and the floating components 207 which are arranged in a plurality of annular arrays at the top ends of the connecting rods 201. The device has two groups of water level balancing units 200 in total, wherein the floating components 207 extend into the motor-side condenser hot well 101 or the turbine-side condenser hot well 102, and the remaining parts are located in the communication pipes 103 and can move up and down by following the water level to block the connection between the communication pipes 103 and the expansion vessels 105.

[0038] The motor-side condenser hot well 101 and the turbine-side condenser hot well 102 have the same volume and can contain the same volume of water. The motor-side condenser hot well 101 is provided with a water inlet 101a in the form of a trumpet-shaped opening at the connection position with the conveying pipe 107, and the trumpet-shaped opening of the water inlet 101a is directed towards the inside of the motor-side condenser hot well 101.

[0039] In use, the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 have the same volume, so that the more water contained in either of the two, the greater the quality, and the greater the pressure applied to the sensing valve 104 through the communication pipe 103. The pressure threshold of the sensing valve 104 is when the liquid level in the motor side condenser hot well 101 reaches the water inlet 101a. When the liquid level is higher than the water inlet 101a, it is an overpressure condition, and the sensing valve 104 is open. When the liquid level is lower than the water inlet 101a, it is an underpressure condition, and the sensing valve 104 is closed. However, when the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 are filling the expansion vessel 105, the sensing valve 104 is open.

[0040] In use, the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 have the same volume, so that the more water contained in either of the two, the greater the quality, and the greater the pressure applied to the sensing valve 104 through the communication pipe 103. The pressure threshold of the sensing valve 104 is when the liquid level in the motor side condenser hot well 101 reaches the water inlet 101a. When the liquid level is higher than the water inlet 101a, it is an overpressure condition, and the sensing valve 104 is open. When the liquid level is lower than the water inlet 101a, it is an underpressure condition, and the sensing valve 104 is closed. However, when the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 are filling the expansion vessel 105, the sensing valve 104 is open.

[0041] In use, the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 have the same volume, so that the more water contained in either of the two, the greater the quality, and the greater the pressure applied to the sensing valve 104 through the communication pipe 103. The pressure threshold of the sensing valve 104 is when the liquid level in the motor side condenser hot well 101 reaches the water inlet 101a. When the liquid level is higher than the water inlet 101a, it is an overpressure condition, and the sensing valve 104 is open. When the liquid level is lower than the water inlet 101a, it is an underpressure condition, and the sensing valve 104 is closed. However, when the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 are filling the expansion vessel 105, the sensing valve 104 is open.

[0042] Embodiment 2

[0043] Referring to FIGS. 1-10, the second embodiment of the present application is different from the first embodiment in that after the same water flow is injected into the motor side condenser hot well 101 and the steam turbine side condenser hot well 102, the communication channels between the two and the communication pipe 103 are blocked to prevent any of the motor side condenser hot well 101 and the steam turbine side condenser hot well 102 from flowing into the expansion vessel 105 due to weather, air pressure, etc., ensuring that the water injection amounts on both sides are the same, and thus ensuring that the water levels on both sides are the same.

[0044] Compared with Embodiment 1, further, the connecting rod 201 is a hexagonal prism structure, and the connecting rod 201 passes through the limiting part 203 and the plugging part 204 from top to bottom in turn, the plugging part 204 is integrally connected on the connecting rod 201, and the plugging part 204 is limited in the circumferential direction of the connecting rod 201, the connecting rod 201 with a hexagonal prism structure can limit the sliding block 204a and the floating part 207 fixedly connected at the top end of the sliding block 204a, so that the plugging head 207a and the water inlet 101a are always on the same vertical line, facilitating the plugging of the plugging head 207a to the water inlet 101a.

[0045] The supporting part 202 includes a bottom disc 202a fixedly connected to the end of the connecting rod 201, three groups of connecting frames 202b vertically distributed around the bottom disc 202a, connecting shafts 202c symmetrically arranged at the top of the connecting frames 202b, half-moon pieces 202d correspondingly arranged at the outer end of each group of connecting shafts 202c, vertical sliding grooves 202e vertically arranged on the connecting frames 202b and opening outward, three groups of side supporting springs 202f annularly arranged on the outer side of the bottom disc 202a in pairs, and a supporting spring 202g arranged at the top of the bottom disc 202a and sleeved on the connecting rod 201.

[0046] During use, the supporting spring 202g is located between the spherical block 204b and the bottom disc 202a, and always applies an upward supporting force to the sliding block 204a through its own elastic force. The half-moon piece 202d has a semicircular structure, and the right angle side thereof abuts against one side of the limiting sector 205c.

[0047] The limiting part 203 includes a limiting plate 203a sleeved on the outer side of the connecting rod 201, three groups of limiting blocks 203b annularly arranged on the outer side of the limiting plate 203a, and flow-through openings 203c between every two groups of limiting blocks 203b. The outer end of the limiting block 203b is fixedly connected to the inner wall of the communicating pipe 103, and the flow-through opening 203c serves as a passage opening for the communication between the motor-side condenser hot well 101 and the communicating pipe 103. Water flow can flow into the communicating pipe 103 through the flow-through opening 203c. The sector size of the flow-through opening 203c is the same as the size of the plugging sector 204c. Therefore, when the three groups of plugging sectors 204c are located in the corresponding flow-through openings 203c, the three groups of limiting blocks 203b can plug the communicating pipe 103, thereby isolating the water flow channel between the motor-side condenser hot well 101 and the communicating pipe 103.

[0048] The plugging part 204 includes a sliding block 204a slidingly sleeved on the connecting rod 201, a spherical block 204b arranged below the sliding block 204a, three groups of plugging sectors 204c annularly and equally divided on the outer side of the sliding block 204a, and a connecting sliding frame 204d correspondingly rotationally connected to the outer side center position of each group of plugging sectors 204c.

[0049] In use, the sliding block 204a is limited by the connecting rod 201 and can only slide vertically thereon, the blocking fan piece 204c is rotatably connected to the outer side of the sliding block 204a, and the spherical block 204b of the spherical structure is attached to the inner side of the blocking fan piece 204c, which can ensure that the blocking fan piece 204c is always in close contact with the spherical block 204b during rotation, thereby improving the sealing effect. The position of the blocking fan piece 204c corresponds to the position of the flow-through port 203c and can perfectly coincide with the inside thereof.

[0050] The support component 205 includes two groups of support frames 205a symmetrically arranged on both sides of the connecting frame 202b, a sleeve shaft 205d arranged on each group of support frames 205a near one end of the connecting frame 202b, and a connecting shaft 202c extending into the sleeve shaft 205d, a horizontal sliding groove 205b horizontally arranged on the support frame 205a, and the ends of the connecting sliding frame 204d extending into the horizontal sliding groove 205b in a sliding connection, and a limiting fan piece 205c arranged on the outside of the sleeve shaft 205d.

[0051] The locking component 206 includes a top plate 206a located between the support frames 205a and parallel to the connecting frame 202b in the vertical direction, extension rods 206b symmetrically arranged on both sides below the top plate 206a, clamping blocks 206c correspondingly arranged on the outer ends of each group of extension rods 206b, sliding blocks 206d arranged on the inside of the top plate 206a below and extending outwardly into the vertical sliding groove 202e, and return springs 206e arranged on the bottom surface of the sliding block 206d.

[0052] In use, the support frame 205a is rotatably connected to the outside of the connecting rod 201 through the cooperation of the sleeve shaft 205d and the 202cc, the limiting fan piece 205c is a quarter circular fan piece, and the straight edge of the fan piece is attached to the half-moon piece 202d, so that the two are limited by each other. The horizontal sliding groove 205b provides a space for the movement of the connecting sliding frame 204d. The top plate 206a is always supported upward along the connecting frame 202b by the elastic support of the return spring 206e, so that the top end of the top plate 206a abuts against the bottom surface of the blocking fan piece 204c, and the top end of the clamping block 206c abuts against the straight edge of the bottom surface of the limiting fan piece 205c, limiting it from below. At this time, the limiting fan piece 205c is limited by the half-moon piece 202d and the clamping block 206c, which synchronously limits the entire support component 205 from moving, and the entire support component 205 is in a horizontal expansion action, as shown in FIG. 2.

[0053] Among them, there is a group of floating components 207 corresponding to the water inlet 101a, and the outer side of the floating component 207 corresponding to the water inlet 101a is provided with a sealing head 207a, the inner end of the sealing head 207a is provided with a sealing shaft 207b, and the sealing shaft 207b extends into the sealing head 207a, and the sealing spring 207c is arranged at the end of the sealing shaft 207b, the whole floating component 207 is made of material with large buoyancy, when water is injected into the motor side condenser hot well 101, the water level balance unit 200 can be stretched upward as a whole except the limiting component 203 by the buoyancy of the water level upward pushing, the sealing head 207a is supported by the elasticity of the sealing spring 207c, and when it moves to the water inlet 101a, it can be inserted into it to block the water inlet 101a, prevent external water flow into the motor side condenser hot well 101, and ensure the stability of the water level.

[0054] In use, when the motor side condenser hot well 101 and the turbine side condenser hot well 102 are simultaneously filled with water from the inside, the sensing valve 104 at this time is in an open state, the connecting rod 201 extends into the bottom of the communication pipe 103, the blocking part 204 is away from the limiting part 203, the communication pipe 103 and the motor side condenser hot well 101 remain unblocked, and the sliding block 204a as a whole moves upward due to the elastic support of the supporting spring 202g. Since the supporting part 205 as a whole cannot rotate, the blocking fan blade 204c at this time is folded downward and cannot block the normal injection of the water flow in the flow-through opening 203c. With the injection of the water flow, the water level in the motor side condenser hot well 101 rises, the floating part 207 is lifted by the buoyancy and will drive the water level balancing unit 200 to rise except for the limiting part 203. The blocking part 204 moving upward will eventually abut against the lower side of the limiting plate 203a, and with the increase of the buoyancy, the supporting spring 202g is squeezed and shrinks. At this time, the blocking fan blade 204c will slide outward along the supporting part 205 and expand through the connecting sliding frame 204d. The expanded blocking fan blade 204c will coincide with the flow-through opening 203c and cooperate with the limiting block 203b to cut off the communication between the communication pipe 103 and the motor side condenser hot well 101. The top floating part 207 continues to float upward and will eventually block the water inlet 101a through the blocking head 207a. In this process, the blocking part 204 and the limiting part 203 completely block the communication pipe 103, and the blocking head 207a blocks the water inlet 101a. The turbine side condenser hot well 102 and the motor side condenser hot well 101 are simultaneously operated to inject water, and the two sets of water level balancing units 200 simultaneously block the communication pipe 103. At this time, it can be concluded that the water levels in the motor side condenser hot well 101 and the turbine side condenser hot well 102 are the same. Therefore, after the same water flow is injected into the motor side condenser hot well 101 and the turbine side condenser hot well 102, the communication channels between the two and the communication pipe 103 are blocked to prevent the water in any one of the motor side condenser hot well 101 and the turbine side condenser hot well 102 from flowing into the expansion vessel 105 due to weather, air pressure, etc., so as to ensure that the water injection amounts on both sides are the same, and thus the water levels on both sides are the same.

[0055] The remaining structure is the same as that of example 1.

[0056] Example 3

[0057] Referring to FIGS. 1-10, the third embodiment of the present application is different from the second embodiment in that when the water level in any one of the motor side condenser hot well 101 and the turbine side condenser hot well 102 is too low or too high, the water level balancing unit 200 in the two can cooperate with the water level conveying unit 100 to perform water level balancing operation according to the change of the water level.

[0058] Compared with Embodiment 2, further, if the water level in the motor-side condenser hot well 101 is higher and the water level in the turbine-side condenser hot well 102 is lower, as shown on the left side of FIG. 8, the higher water level means that more water flows in the motor-side condenser hot well 101, and the pressure given to the sensing valve 104 and the buoyancy of the floating component 207 is greater. At this time, the sensing valve 104 below the motor-side condenser hot well 101 is opened, and the floating component 207 is continuously pulled upward by the excessive pressure to pull the water level balancing unit 200 except the limiting component 203. At this time, the supporting spring 202g cannot continue to contract, the limiting plate 203a exerts pressure on the sliding block 204a downward to further drive the blocking vane 204c to displace, the blocking component 204 at this time presses the top plate 206a downward, so that the top plate 206a drives the clamping block 206c to move downward, the limiting of the limiting vane 205c is released, so that the supporting component 205 as a whole can drive the blocking vane 204c to rotate, as shown in FIG. 10. At this time, the rotating blocking vane 204c is located below the limiting component 203 in a way of inward folding, and does not block the water flow in the flow-through opening 203c into the communication pipe 103;

[0059] And the other group of liquid level lower turbine-side condenser hot well 102, as shown on the right side of FIG. 8, the low water level means that the pressure given to the sensing valve 104 by the turbine-side condenser hot well 102 is smaller, and the buoyancy of the floating component 207 is smaller. At this time, the sensing valve 104 below it is closed and no longer communicates with the expansion vessel 105, and the floating component 207 with smaller buoyancy cannot drive the blocking component 204 to float and abut against the limiting component 203. Therefore, the blocking component 204 in the communication pipe 103 below the turbine-side condenser hot well 102 at this time will move downward and be in a contracted state, as shown in FIG. 10;

[0060] At this time, the centrifugal pump 106 is started, and the centrifugal pump 106 will extract the excess water in the motor side condenser hot well 101 through the communication pipe 103 below it and transport it into the turbine side condenser hot well 102 through the delivery pipe 107 of the straight-through turbine side condenser hot well 102. With the extraction of the centrifugal pump 106, the water level in the motor side condenser hot well 101 drops, and the water level balancing unit 200 as a whole will be displaced downward, thereby releasing the pressure of the supporting spring 202g, driving the blocking component 204 to rotate reversely, and the reversely rotating blocking vane 204c will drive the supporting component 205 to reset through the connecting slide 204d, and the reversely rotating blocking vane 204c will no longer continue to press the top plate 206a, and the top plate 206a will also reset, and finally the blocking vane 204c will be in a parallel state below the flow-through opening 203c, continuing to block the flow-through opening 203c, while the clamping block 206c and the half-moon piece 202d continue to limit the limiting vane 205c, so that the supporting component 205 remains in a parallel state with the blocking vane 204c, as shown in FIG. 3, and the top blocking head 207a will also move downward to block the water inlet 101a, as shown in FIG. 1, at this time, the water level in the motor side condenser hot well 101 is in a normal state, and the water level balancing unit 200 in the turbine side condenser hot well 102 on the other side will also reset to the state of blocking the communication pipe 103 with the injection of the centrifugal pump 106 water flow, following the rise of the water level, at this time, the water levels in the motor side condenser hot well 101 and the turbine side condenser hot well 102 are in the same state.

[0061] The remaining structure is the same as that of embodiment 2.

[0062] It is important to note that the construction and arrangement of the application shown in the various examples presented are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements can be altered or varied. Thus, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "apparatus" or "device" described herein can be a structure that performs the recited function, not necessarily composed of all the means or elements specifically disclosed. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described herein, but extends to all structures that would fall within the scope of the appended claims.

[0063] Also, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the

[0064] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A device for balancing water levels on both sides of a condenser hotwell, characterized by: The utility model relates to a water level conveying unit (100) and a water level balance unit (200), and the water level conveying unit (100) comprises a motor side condenser hot well (101) and a steam turbine side condenser hot well (102) arranged symmetrically in the horizontal direction, two groups of communication pipes (103) arranged correspondingly below the motor side condenser hot well (101) and the steam turbine side condenser hot well (102) respectively, a sensing valve (104) connected to the end of each group of communication pipes (103), an expansion vessel (105) arranged between the two groups of sensing valves (104), a centrifugal pump (106) arranged below the expansion vessel (105), and two groups of conveying pipes (107) extending outward from both sides of the centrifugal pump (106) and communicating with the motor side condenser hot well (101) and the steam turbine side condenser hot well (102) respectively. The water level balance unit (200) comprises a connecting rod (201) arranged vertically in the communication pipe (103), a supporting part (202) arranged at the end of the connecting rod (201), a limiting part (203) arranged on the connecting rod (201) and fixedly connected to the position where the communication pipe (103) communicates with the motor side condenser hot well (101), a blocking part (204) sleeved on the connecting rod (201), three groups of supporting parts (205) distributed annularly on the supporting part (202), a locking part (206) arranged correspondingly below each group of supporting parts (205), and a plurality of groups of floating parts (207) arranged annularly at the top end of the connecting rod (201). The motor side condenser hot well (101) and the steam turbine side condenser hot well (102) have the same volume and can contain the same volume of moisture, a water inlet (101a) with a trumpet-shaped opening is arranged at the connection between the motor side condenser hot well (101) and the conveying pipe (107), and the trumpet-shaped opening of the water inlet (101a) is directed towards the inside of the motor side condenser hot well (101).

2. The device for balancing water levels on both sides of a condenser well according to claim 1, characterized in that: The motor side condenser hot well (101) and the steam turbine side condenser hot well (102) communicate with the expansion vessel (105) through the corresponding communication pipe (103) and sensing valve (104) respectively, a pipeline is connected between the sensing valve (104) and the expansion vessel (105), the centrifugal pump (106) is a bidirectional centrifugal pump, and the two groups of conveying pipes (107) are respectively connected to the bidirectional outlets of the centrifugal pump (106).

3. The device for balancing water levels on both sides of a condenser well according to claim 2, characterized in that: The connecting rod (201) is a hexagonal prism structure, and the connecting rod (201) sequentially passes through the limiting part (203) and the blocking part (204) from top to bottom, the blocking part (204) is slidably connected to the connecting rod (201) as a whole, and the blocking part (204) is limited in the circumferential direction of the connecting rod (201).

4. The device for balancing water levels on both sides of a condenser well according to claim 3, characterized in that: ​ 5. The device for balancing water levels on both sides of a condenser well according to claim 4, characterized in that: The supporting component (202) comprises a base plate (202a) fixedly connected to the end of the connecting rod (201), three groups of connecting frames (202b) vertically and circumferentially distributed on the base plate (202a), connecting shafts (202c) symmetrically arranged at the top of both sides of the connecting frames (202b), half-moon pieces (202d) correspondingly arranged at the outer ends of each group of the connecting shafts (202c), vertical sliding grooves (202e) vertically and outwardly formed on the connecting frames (202b), three groups of side supporting springs (202f) annularly arranged on the outside of the base plate (202a), and a supporting spring (202g) arranged at the top of the base plate (202a) and sleeved on the connecting rod (201).

6. The device for balancing water levels on both sides of a condenser well according to claim 5, characterized in that: The limiting component (203) comprises a limiting plate (203a) sleeved on the outside of the connecting rod (201), three groups of limiting blocks (203b) annularly arranged on the outside of the limiting plate (203a), and a flow-through opening (203c) between every two groups of the limiting blocks (203b).

7. The device for balancing water levels on both sides of a condenser well according to claim 6, characterized in that: The blocking component (204) comprises a sliding block (204a) slidingly sleeved on the connecting rod (201), a spherical block (204b) arranged below the sliding block (204a), three groups of blocking fan pieces (204c) annularly and equally divided on the outside of the sliding block (204a), and connecting sliding frames (204d) correspondingly and rotationally connected to the center positions on the outside of each group of the blocking fan pieces (204c).

8. The device for balancing water levels on both sides of a condenser well according to claim 7, characterized in that: The supporting component (205) comprises two groups of supporting frames (205a) symmetrically arranged on both sides of the connecting frames (202b), sleeve shafts (205d) arranged on one end of each group of the supporting frames (205a) close to the connecting frames (202b), the connecting shafts (202c) extending into the sleeve shafts (205d), transverse sliding grooves (205b) transversely formed on the supporting frames (205a), the ends of the connecting sliding frames (204d) extending into the transverse sliding grooves (205b) in a sliding manner, and limiting fan pieces (205c) arranged on the outside of the sleeve shafts (205d).

9. The device for balancing water levels on both sides of a condenser well according to claim 8, characterized in that: The locking component (206) comprises a top plate (206a) between the supporting frames (205a) and vertically parallel to the connecting frames (202b), extension rods (206b) symmetrically arranged below both sides of the top plate (206a), clamping blocks (206c) correspondingly arranged at the outer ends of each group of the extension rods (206b), sliding blocks (206d) arranged below the inside of the top plate (206a) and outwardly extending into the vertical sliding grooves (202e), and return springs (206e) arranged on the bottom surface of the sliding blocks (206d).

10. The device for balancing water levels on both sides of a condenser well according to claim 9, characterized in that: The floating part (207) has a group corresponding to the water inlet (101a), and the outer side of the floating part (207) corresponding to the water inlet (101a) is provided with a blocking head (207a), the inner end of the blocking head (207a) is provided with a blocking shaft (207b), the blocking shaft (207b) extends into the blocking head (207a), and a blocking spring (207c) is arranged at the end of the blocking shaft (207b).

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