A detection device for gravity condenser

Abstract

The present invention relates to the technical field of condenser detection, and more specifically to a gravity condenser detection device, comprising: a sampling part, which is arranged below a circulating water pipe; a gravity part, which is arranged outside a condenser body and connected to the condenser body and the sampling part through pipelines, respectively, so that condensed water in the sampling part flows back to the inside of the condenser through the gravity part to form a gravity circulation; a collection part, which collects data on the temperature and conductivity of the condensed water in the gravity part; a processing part, which calculates and temperature compensates the conductivity, makes judgment and analysis on the conductivity, and generates corresponding alarm information according to the conductivity; a transmission circuit, which transmits data; and a display terminal, which displays the conductivity and the alarm information. Through the gravity part, a gravity circulation is formed between the detection device and the condenser, so that the inside of the detection device is kept in a water state, and the conductivity electrode will not be damaged due to water loss, thereby playing a role in protecting the conductivity electrode.

Description

Technical Field

[0001] The present invention relates to the technical field of condenser detection, and more particularly to a gravity condenser detection device. Background Art

[0002] Steam turbine is the main equipment for thermal power generation, and condenser is the equipment that condenses the exhaust gas of steam turbine into water. Condenser is an important cooling equipment in power plant, and its operating status directly affects the safe and economical operation of the whole unit. The cooling water with high salt content flows in the condenser circulating water pipe, and the pure steam with almost no impurities flows outside the pipe. Once the condenser circulating water pipe leaks during operation, the high-content cooling water will leak into the pure condensate, quickly polluting the condensate and causing the water vapor quality of the steam turbine unit to deteriorate, especially in seawater-cooled power plants. Therefore, leakage detection of condenser circulating water pipe is very important.

[0003] In the prior art, the detection device is generally arranged in the water chamber of the condenser. The vacuum environment and high temperature environment in the water chamber have an impact on the detection results. How to reduce the impact of the water chamber environment on the detection results is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0004] In view of this, the present invention provides a gravity-flow condenser detection device, which is arranged outside the condenser and is completely unaffected by the changes in temperature and pressure inside the condenser on the detection result. A gravity-flow circulation is formed between the detection device and the condenser, so that the inside of the detection device is kept in a water state, and the conductivity electrode will not be damaged due to water loss, thereby playing a role in protecting the conductivity electrode; the structural design is simple, eliminating the need for switching solenoid valves and vacuum pumps, and saving the cost of detection.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Preferably, in the above-mentioned self-flowing condenser detection device, it is characterized by comprising:

[0007] A condenser body, wherein a circulating water pipe for generating condensed water is arranged at the upper end of the condenser body;

[0008] A sampling part is arranged below the circulating water pipe, and its bottom is higher than the height of the condensed water surface in the condenser body;

[0009] A gravity part is arranged outside the condenser body and is connected to the condenser body and the sampling part through pipelines, so that the condensate in the sampling part flows back to the condenser through the gravity part to form a gravity circulation;

[0010] A collection unit collects data on the temperature and conductivity of the condensed water in the gravity flow unit;

[0011] A processing unit connected to the acquisition unit, acquiring the data information collected by the acquisition unit, calculating and temperature-compensating the conductivity, making judgments and analyses on the conductivity, and generating corresponding alarm information according to the conductivity when the conductivity exceeds a set value;

[0012] a transmission circuit connected to the processing unit and used for transmitting the conductivity value calculated by the processing unit and the alarm information generated;

[0013] The display terminal is connected to the transmission circuit, and receives and displays the conductivity and the alarm information transmitted by the transmission circuit.

[0014] Preferably, the condenser body further comprises:

[0015] A water chamber, used for storing condensed water generated by the circulating water pipe;

[0016] A steam inlet pipe is arranged above the water chamber and connected to the steam outlet of the steam turbine unit;

[0017] A vacuum tube, disposed above the water chamber and connected to an external vacuum pump;

[0018] A drainage pipe is arranged at one side of the water chamber and is connected to an external water pump.

[0019] Preferably, the gravity flow portion comprises:

[0020] A storage component is arranged outside the condenser body, and the top of the storage component is lower than the height of the condensate surface in the water chamber;

[0021] a first sampling tube, one end of which is connected to the bottom of the sampling portion, and the other end of which is connected to the bottom of the storage component;

[0022] The first sampling tube has one end connected to the upper end of the side surface of the storage component, and the other end connected to the lower end of the side surface of the water chamber.

[0023] Preferably, the storage component comprises:

[0024] case;

[0025] A buffer layer is disposed inside the shell and is tightly connected to the inner wall of the shell;

[0026] A heat-insulating layer is disposed inside the buffer layer and is tightly connected to the inner wall of the buffer layer;

[0027] The inner liner is arranged inside the thermal insulation layer, is tightly connected to the inner wall of the thermal insulation layer, is connected to the first sampling tube at the bottom, and is connected to the first sampling tube at the side.

[0028] Preferably, the collection unit comprises:

[0029] A conductivity sensor, fixedly connected to the inner wall of the inner container, and a conductivity electrode thereof is placed in the inner container;

[0030] A temperature sensor, fixedly connected to the inner wall of the inner container and arranged adjacent to the conductivity sensor;

[0031] The transmitter is arranged outside the shell, is electrically connected to the conductivity sensor and the temperature sensor, obtains the signals of the conductivity sensor and the temperature sensor, and transmits the signals to the processing unit after being processed by an A / D digital-to-analog conversion circuit.

[0032] Preferably, the processing unit comprises:

[0033] A storage unit, storing the data information transmitted by the transmitter, storing the conductivity threshold table of the condensed water, and storing the temperature coefficient w;

[0034] The conductivity calculation unit obtains the data information transmitted by the transmitter in the storage unit, and has n conductivity data σ1, σ2, σ3...σ within a certain time Δt. n , remove the largest a largest conductivity data and b smallest conductivity data, and average the remaining nab conductivity data to obtain the effective conductivity σ within a certain period of time. The calculation formula is:

[0035]

[0036] The temperature compensation unit obtains the data information transmitted by the transmitter in the storage unit, the temperature coefficient w, and the effective conductivity σ, calculates the average temperature k in the same time period Δt in the conductivity calculation unit, and performs temperature compensation on the current effective conductivity σ to the conductivity value m at 25°C. The calculation formula is:

[0037]

[0038] A conductivity judgment unit is provided for obtaining the conductivity threshold table of the condensed water and the conductivity value m in the storage unit, and comparing the conductivity value m with the conductivity threshold table. When the conductivity value m is less than the minimum value in the conductivity threshold table, it is judged that the condenser body (1) is operating normally; when the conductivity value m is greater than the minimum value in the conductivity threshold table, it is judged that the condenser body is operating abnormally, and corresponding alarm information is generated according to the interval of the conductivity value m in the conductivity threshold table.

[0039] The data transmission unit transmits the conductivity value m in the temperature compensation unit and the alarm information generated by the conductivity judgment unit to the transmission circuit.

[0040] Preferably, a self-flowing condenser detection device further includes: a cleaning unit, including:

[0041] An ultrasonic generator, fixedly connected to the inner wall of the inner container, and used for cleaning the conductivity electrode of the conductivity sensor;

[0042] The ultrasonic controller is electrically connected to the ultrasonic generator and the display terminal, and is used to control the opening and closing of the ultrasonic generator.

[0043] Preferably, the display terminal includes:

[0044] A display unit, receiving and displaying the conductivity value m transmitted by the data transmission unit and the alarm information generated by the conductivity judgment unit;

[0045] an alarm unit, wherein when the display unit receives the alarm information, the display unit performs alarm processing according to the importance of the alarm information;

[0046] The control unit inputs time information through the display unit and sends the time information to the ultrasonic controller, so that the ultrasonic controller controls the ultrasonic generator to operate according to the time information.

[0047] Preferably, in the conductivity judgment unit, corresponding alarm information is generated according to the interval of the conductivity value m in the conductivity threshold table, including:

[0048] The conductivity value m in the conductivity judgment unit is used to judge whether the condenser body (1) is abnormal, and the values ​​in the conductivity threshold table are preset as (m1, m2, m3, m4), wherein m1 is a first preset conductivity value, m2 is a second preset conductivity value, m3 is a third preset conductivity value, m4 is a fourth preset conductivity value, and m1<m2<m3<m4;

[0049] The alarm information E in the conductivity judgment unit is used to alarm after an abnormality occurs in the condenser body (1). An alarm information matrix E0 is preset, and E0 (E1, E2, E3, E4) is set, where E1 is the first-level alarm information, E2 is the second-level alarm information, E3 is the third-level alarm information, and E4 is the fourth-level alarm information, and E1 is compared according to the importance. <E2<E3<E4;

[0050] The conductivity judgment unit generates an alarm message E of a corresponding level according to the interval of the conductivity m in the conductivity threshold table;

[0051] When m<m1, the condenser body is in normal operating state;

[0052] When m1≤m<m2, the generated alarm information is the first-level alarm information E1;

[0053] When m2≤m<m3, the generated alarm information is the second-level alarm information E2;

[0054] When m3≤m<m4, the generated alarm information is level 3 alarm information E3;

[0055] When m4<m, the generated alarm information is the fourth-level alarm information E4.

[0056] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the present invention are:

[0057] 1. Through the setting of the sampling part, the condensed water is collected before it falls into the condensed water in the water chamber, which prevents the condensed water in the water chamber from diluting the sampled condensed water, thereby affecting the detection result and improving the accuracy of the detection; through the setting of the gravity part, a gravity circulation is formed between the detection device and the condenser, so that the inside of the detection device is kept in a water state, and the conductivity electrode will not be damaged due to water loss, which plays a role in protecting the conductivity electrode; the gravity part is set on the outside of the condenser body, and is completely unaffected by the temperature and pressure changes inside the condenser on the detection result, thereby improving the detection stability; at the same time, the detection device has a simple structural design, eliminates the need for switching solenoid valves and vacuum pumps, and saves the cost of detection.

[0058] 2. Since the change of temperature affects the conductivity, the sampled condensed water is kept warm by setting up the storage component, which reduces the temperature fluctuation of the condensed water and improves the accuracy of the detection.

[0059] 3. After long-term use, attachments will appear on the conductivity electrode, affecting the accuracy of detection. Through the setting of the cleaning part, the cleaning time can be manually input to clean the conductivity electrode, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0061] Figure 1 The accompanying drawing is a schematic diagram of the overall structure of the present invention.

[0062] Figure 2 The accompanying drawing is a schematic diagram of the storage component structure of the present invention.

[0063] Figure 3The accompanying drawing is a schematic diagram of the conductivity detection process flow of the present invention.

[0064] In the figure, 1. condenser body; 2. circulating water pipe; 3. sampling part; 4. water chamber; 5. steam inlet pipe; 6. vacuum tube; 7. drain pipe; 8. storage component; 9. first sampling tube; 10. second sampling tube; 11. conductivity sensor; 12. temperature sensor; 13. transmitter; 14. ultrasonic generator; 51. shell; 52. buffer layer; 53. insulation layer; 54. liner. DETAILED DESCRIPTION

[0065] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0066] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0067] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0068] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the inner sides of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] like Figure 1 As shown, the present invention discloses a self-flow condenser detection device, comprising:

[0070] A condenser body 1, the upper end of which is provided with a circulating water pipe 2 for generating condensed water;

[0071] The sampling part 3 is arranged below the circulating water pipe 2, and its bottom is higher than the height of the condensed water surface in the condenser body 1;

[0072] The gravity part is arranged outside the condenser body 1 and is connected to the condenser body 1 and the sampling part 3 through pipelines, so that the condensate in the sampling part 3 flows back to the condenser through the gravity part to form a gravity circulation;

[0073] The data collection section collects data on the temperature and conductivity of the condensed water in the gravity section;

[0074] The processing unit is connected to the collection unit, obtains the data information collected by the collection unit, calculates the conductivity and temperature compensation, makes judgment and analysis on the conductivity, and generates corresponding alarm information according to the conductivity when the set value is exceeded;

[0075] a transmission circuit connected to the processing unit and used for transmitting the conductivity value calculated by the processing unit and the alarm information generated;

[0076] The display terminal is connected to the transmission circuit, and receives and displays the conductivity and alarm information transmitted by the transmission circuit.

[0077] Among them, the sampling part, gravity part and collection part can be set in multiple according to the circulating water pipe in the condenser body 1, and all the collected data are transmitted to the processing part for processing and analysis, so as to determine the approximate location of the leakage.

[0078] Among them, the transmission circuit is preferably an RS485 transmission circuit, and the processing unit is preferably a single-chip microcomputer processor, and the single-chip microcomputer processor is the existing technology.

[0079] The display terminal may be one or more display terminals including a computer, a mobile phone, and a notebook.

[0080] The working principle of the above technical solution is as follows: the condensed water generated in the condenser body 1 is collected by the sampling part 3, and the condensed water flows back into the water chamber of the condenser body through the gravity part. The collection part collects the conductivity and temperature of the condensed water in the gravity part, and transmits the collected data information to the processing part; the processing part calculates the conductivity, and then performs temperature compensation on the conductivity, transmits the conductivity after temperature compensation to the display terminal for display, and judges whether the water circulation pipe 2 is leaking according to the conductivity after temperature compensation, and sends an alarm message to the display terminal when it is judged that a leak occurs, and the display terminal displays the alarm message and alarms.

[0081] The beneficial effects of the above technical scheme are as follows: through the setting of the sampling part, the condensed water is collected before it falls into the condensed water in the water chamber, thereby preventing the condensed water in the water chamber from diluting the sampled condensed water, thereby affecting the detection result and improving the accuracy of the detection; through the setting of the gravity part, a gravity circulation is formed between the detection device and the condenser, so that the inside of the detection device is kept in a water state, and the conductivity electrode will not be damaged due to water loss, thereby playing a role in protecting the conductivity electrode; the gravity part is set on the outside of the condenser body, and is completely unaffected by the temperature and pressure changes inside the condenser on the detection result, thereby improving the detection stability; at the same time, the detection device has a simple structural design, eliminates the need for switching solenoid valves and vacuum pumps, and saves the cost of detection.

[0082] In one embodiment, the condenser body 1 further includes:

[0083] The water chamber 4 is used to store condensed water generated by the circulating water pipe 2;

[0084] The steam inlet pipe 5 is arranged above the water chamber 4 and connected to the steam outlet of the steam turbine unit;

[0085] A vacuum tube 6 is disposed above the water chamber 4 and connected to an external vacuum pump;

[0086] The drain pipe 7 is disposed at one side of the water chamber 4 and is connected to an external water pump.

[0087] Among them, a stop valve is arranged on the steam inlet pipe 5, which is used to cut off the steam source when the circulating water pipe is leaking and undergoing maintenance.

[0088] The vacuum tube 6 is used to extract the air that cannot be condensed, so as to keep the interior of the condenser body 1 in a vacuum state.

[0089] The drain pipe 7 is used to ensure that the condensate level in the water chamber of the condenser body 1 will not be too high.

[0090] In one embodiment, the gravity flow section comprises:

[0091] The storage component 8 is arranged outside the condenser body 1, and the top height thereof is lower than the height of the condensed water surface in the water chamber 4;

[0092] A first sampling tube 9, one end of which is connected to the bottom of the sampling portion 3, and the other end of which is connected to the bottom of the storage component 8;

[0093] The first sampling tube 10 has one end connected to the upper end of the side surface of the storage component 8 , and the other end connected to the lower end of the side surface of the water chamber 4 .

[0094] The working principle of the above embodiment is as follows: the condensed water in the sampling part 3 flows into the storage part 8 through the first sampling tube 9, the collection part collects data information of the condensed water, and the condensed water flows back from the storage part 8 to the water chamber of the condenser body 1 through the second sampling tube 10;

[0095] The beneficial effects of the above embodiment are as follows: by utilizing the negative air pressure inside the condenser body 1, a gravity circulation is generated between the condenser body 1 and the storage component 8, so that the inside of the detection device is kept in a water state, and the conductivity electrode will not be damaged due to water loss, thereby playing a role in protecting the conductivity electrode; the gravity part is arranged on the outside of the condenser body, and is completely unaffected by the changes in temperature and pressure inside the condenser on the detection result, thereby improving the detection stability.

[0096] like Figure 2 As shown, in one embodiment, the storage component 8 includes:

[0097] Housing 51;

[0098] The buffer layer 52 is disposed inside the shell 51 and is tightly connected to the inner wall of the shell 51;

[0099] The heat-insulating layer 53 is disposed inside the buffer layer 52 and is tightly connected to the inner wall of the buffer layer 52;

[0100] The inner liner 54 is disposed inside the heat-insulating layer 53 , and is tightly connected to the inner wall of the heat-insulating layer 53 . The bottom is connected to the first sampling tube 9 , and the side is connected to the first sampling tube 10 .

[0101] Among them, the buffer layer is preferably a foam sponge, the thermal insulation layer is preferably a polyurethane foam layer, and the liner is preferably a thermal insulation liner.

[0102] The beneficial effects of the above embodiment are as follows: since the change of temperature affects the conductivity, the sampled condensed water is kept warm by setting the storage component, which reduces the temperature fluctuation of the condensed water and improves the accuracy of detection.

[0103] like Figure 2 As shown, in one embodiment, the acquisition unit includes:

[0104] The conductivity sensor 11 is fixedly connected to the inner wall of the inner liner 54, and its conductivity electrode is placed in the inner liner 54;

[0105] The temperature sensor 12 is fixedly connected to the inner wall of the inner tank 54 and is disposed adjacent to the conductivity sensor;

[0106] The transmitter 13 is disposed outside the housing 51 and is electrically connected to the conductivity sensor 11 and the temperature sensor 12 to obtain signals from the conductivity sensor 11 and the temperature sensor 12 and transmit the signals to the processing unit after being processed by an A / D digital-to-analog conversion circuit.

[0107] Among them, the conductivity sensor 11, the temperature sensor 12 and the transmitter 13 are existing technologies.

[0108] The conductivity sensor 11 and the temperature sensor 12 are positioned in the inner tank 54 to ensure that one detection end is placed in the condensed water.

[0109] The transmitter 13 is connected to the processing unit via an electrical signal.

[0110] like Figure 3 As shown, in one embodiment, the processing unit includes:

[0111] A storage unit for storing data information transmitted by the transmitter 13, storing a conductivity threshold table of condensed water, and storing a temperature coefficient w;

[0112] The conductivity calculation unit obtains the data information transmitted by the transmitter 13 in the storage unit, and has n conductivity data σ1, σ2, σ3...σ within a certain time Δt. n , remove the largest a conductivity data and b smallest conductivity data, and average the remaining nab conductivity data to obtain the effective conductivity σ within a certain period of time. The calculation formula is:

[0113]

[0114] The temperature compensation unit obtains the data information, temperature coefficient w and effective conductivity σ transmitted by the transmitter 13 in the storage unit, calculates the average temperature k in the same time period Δt in the conductivity calculation unit, and performs temperature compensation on the current effective conductivity σ to the conductivity value m at 25°C. The calculation formula is:

[0115]

[0116] The conductivity judgment unit obtains the conductivity threshold table and the conductivity value m of the condensed water in the storage unit, and compares the conductivity value m with the conductivity threshold table. When the conductivity value m is less than the minimum value in the conductivity threshold table, it is judged that the condenser body 1 is operating normally; when the conductivity value m is greater than the minimum value in the conductivity threshold table, it is judged that the condenser body 1 is operating abnormally, and generates corresponding alarm information according to the interval of the conductivity value m in the conductivity threshold table;

[0117] The data transmission unit transmits the conductivity value m in the temperature compensation unit and the alarm information generated by the conductivity judgment unit to the transmission circuit.

[0118] Among them, the temperature coefficient w is set to 0.018;

[0119] The beneficial effects of the above technical solution are as follows: condensed water is flowing and the conductivity value of the test is constantly changing. By setting the conductivity calculation unit, the average conductivity value over a period of time is calculated, and a certain maximum and minimum value are removed, so that the test result is more accurate. By setting the temperature compensation unit, the conductivity at different temperatures is compensated to 25°C, which improves the detection accuracy.

[0120] In one embodiment, a self-flow condenser detection device further includes: a cleaning unit, including:

[0121] The ultrasonic generator 14 is fixedly connected to the inner wall of the inner container 54 and is used to clean the conductivity electrode of the conductivity sensor 11;

[0122] The ultrasonic controller is electrically connected to the ultrasonic generator 14 and the display terminal, and is used to control the opening and closing of the ultrasonic generator 14.

[0123] The beneficial effect of the above technical solution is that after long-term use, attachments will appear on the conductivity electrode, affecting the accuracy of detection. Through the setting of the cleaning part, the cleaning time can be manually input to clean the conductivity electrode, thereby improving the accuracy of detection.

[0124] In one embodiment, a display terminal includes:

[0125] A display unit receives and displays the conductivity value m transmitted by the data transmission unit and the alarm information generated by the conductivity judgment unit;

[0126] When the alarm unit and the display unit receive the alarm information, they process the alarm according to the importance of the alarm information;

[0127] The control unit inputs the time information through the display unit and sends the time information to the ultrasonic controller, so that the ultrasonic controller controls the ultrasonic generator 14 to operate according to the time information.

[0128] Wherein, the display unit is a screen or a display;

[0129] Among them, the display terminal electrical signal is connected to the sound and light alarm;

[0130] In one embodiment, in the conductivity judgment unit, according to the interval of the conductivity value m in the conductivity threshold table, corresponding alarm information is generated, including:

[0131] The conductivity value m in the conductivity judgment unit is used to judge whether an abnormality occurs in the condenser body 1, and the value in the preset conductivity threshold table is (m1, m2, m3, m4), wherein m1 is the first preset conductivity value, m2 is the second preset conductivity value, m3 is the third preset conductivity value, m4 is the fourth preset conductivity value, and m1<m2<m3<m4;

[0132] The alarm information E in the conductivity judgment unit is used to alarm after an abnormality occurs in the condenser body 1. The alarm information matrix E0 is preset, and E0 (E1, E2, E3, E4) is set, where E1 is the first-level alarm information, E2 is the second-level alarm information, E3 is the third-level alarm information, and E4 is the fourth-level alarm information, and E1 is compared according to the importance. <E2<E3<E4;

[0133] The conductivity judgment unit generates an alarm message E of a corresponding level according to the interval of the conductivity m in the conductivity threshold table;

[0134] When m<m1, the condenser body 1 is in normal operation state;

[0135] When m1≤m<m2, the generated alarm information is the first-level alarm information E1;

[0136] When m2≤m<m3, the generated alarm information is the second-level alarm information E2;

[0137] When m3≤m<m4, the generated alarm information is level 3 alarm information E3;

[0138] When m4<m, the generated alarm information is the fourth-level alarm information E4.

[0139] Among them, when the alarm information is the first-level alarm information E1, the alarm information is a prompt that the circulating water pipe 2 may leak, which will not affect the normal use of the condenser; when the alarm information is the second-level alarm information E2, the alarm information is that the circulating water pipe 2 has a slight leak, reminding the staff to arrange the maintenance of the condenser according to the overall operation of the turbine unit; when the alarm information is the third-level alarm information E3, the alarm information is that the circulating water pipe 2 has a moderate leak, reminding the staff to repair the condenser in time; when the alarm information is the fourth-level alarm information E4, the alarm information is that the circulating water pipe 2 has a serious leak, and the stop valve on the steam inlet pipe of the condenser is closed in time to stop the overall operation of the condenser and conduct a comprehensive maintenance of the condenser.

[0140] The beneficial effects of the above technical solution are: different alarm levels are determined according to different detection results, so that the staff can perform reasonable maintenance work according to the alarm level, thereby improving the overall operating efficiency of the steam turbine unit.

[0141] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0142] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-flowing condenser detection device, characterized in that: include: A condenser body (1), wherein a circulating water pipe (2) for generating condensed water is provided at the upper end of the condenser body (1); A sampling portion (3) is arranged below the circulating water pipe (2), and its bottom is higher than the height of the condensed water surface in the condenser body (1); A gravity flow part is arranged outside the condenser body (1) and is connected to the condenser body (1) and the sampling part (3) through pipelines, so that the condensed water in the sampling part (3) flows back to the inside of the condenser through the gravity flow part, forming a gravity circulation; A collection unit collects data on the temperature and conductivity of the condensed water in the gravity flow unit; A processing unit connected to the acquisition unit, acquiring the data information collected by the acquisition unit, calculating and temperature-compensating the conductivity, making judgments and analyses on the conductivity, and generating corresponding alarm information according to the conductivity when the conductivity exceeds a set value; a transmission circuit connected to the processing unit and used for transmitting the conductivity value calculated by the processing unit and the alarm information generated; A display terminal connected to the transmission circuit, receiving and displaying the conductivity and the alarm information transmitted by the transmission circuit; Wherein, the condenser body (1) further comprises: A water chamber (4) for storing condensed water generated by the circulating water pipe (2); A steam inlet pipe (5) is arranged above the water chamber (4) and connected to the steam outlet of the steam turbine unit; A vacuum tube (6) is disposed above the water chamber (4) and connected to an external vacuum pump; A drainage pipe (7) is arranged on one side of the water chamber (4) and is connected to an external water pump; Wherein, the gravity flow part comprises: A storage component (8) is arranged outside the condenser body (1), and the top of the storage component (8) is lower than the height of the condensed water surface in the water chamber (4); A first sampling tube (9), one end of which is connected to the bottom of the sampling portion (3), and the other end of which is connected to the bottom of the storage component (8); The first sampling tube (10) has one end connected to the upper end of the side surface of the storage component (8) and the other end connected to the lower end of the side surface of the water chamber (4).

2. A self-flow condenser detection device according to claim 1, characterized in that: The storage component (8) comprises: Housing (51); A buffer layer (52) is disposed inside the shell (51) and is tightly connected to the inner wall of the shell (51); A heat-insulating layer (53) is disposed inside the buffer layer (52) and is tightly connected to the inner wall of the buffer layer (52); The inner liner (54) is arranged inside the thermal insulation layer (53), is tightly connected to the inner wall of the thermal insulation layer (53), is connected to the first sampling tube (9) at the bottom, and is connected to the first sampling tube (10) at the side.

3. A self-flow condenser detection device according to claim 2, characterized in that: The collection unit comprises: A conductivity sensor (11) is fixedly connected to the inner wall of the inner container (54), and a conductivity electrode thereof is placed in the inner container (54); a temperature sensor (12) fixedly connected to the inner wall of the inner container (54) and arranged adjacent to the conductivity sensor; The transmitter (13) is arranged outside the housing (51), is electrically connected to the conductivity sensor (11) and the temperature sensor (12), obtains signals from the conductivity sensor (11) and the temperature sensor (12), and transmits the signals to the processing unit after being processed by an A / D digital-to-analog conversion circuit.

4. A self-flow condenser detection device according to claim 3, characterized in that: The processing unit comprises: A storage unit for storing data information transmitted by the transmitter (13), storing a conductivity threshold table of the condensed water, and storing a temperature coefficient w; The conductivity calculation unit obtains the data information transmitted by the transmitter (13) in the storage unit, and has n conductivity data σ1, σ2, σ3 ... σ within a certain time Δt. n , remove the largest a largest conductivity data and b smallest conductivity data, and average the remaining nab conductivity data to obtain the effective conductivity σ within a certain period of time. The calculation formula is: The temperature compensation unit obtains the data information transmitted by the transmitter (13) in the storage unit, the temperature coefficient w and the effective conductivity σ, calculates the average temperature k in the same time period Δt in the conductivity calculation unit, and performs temperature compensation on the current effective conductivity σ to a conductivity value m at 25° C. The calculation formula is: A conductivity judgment unit is provided for obtaining the conductivity threshold table of the condensed water and the conductivity value m in the storage unit, and comparing the conductivity value m with the conductivity threshold table; when the conductivity value m is less than the minimum value in the conductivity threshold table, it is judged that the condenser body (1) is operating normally; when the conductivity value m is greater than the minimum value in the conductivity threshold table, it is judged that the condenser body (1) is operating abnormally, and corresponding alarm information is generated according to the interval of the conductivity value m in the conductivity threshold table; The data transmission unit transmits the conductivity value m in the temperature compensation unit and the alarm information generated by the conductivity judgment unit to the transmission circuit.

5. A self-flow condenser detection device according to claim 4, characterized in that: Also includes: Cleaning department, including: an ultrasonic generator (14), fixedly connected to the inner wall of the inner container (54), and used for cleaning the conductivity electrode of the conductivity sensor (11); An ultrasonic controller is electrically connected to the ultrasonic generator (14) and the display terminal, and is used to control the opening and closing of the ultrasonic generator (14).

6. A self-flow condenser detection device according to claim 5, characterized in that: The display terminal comprises: A display unit, receiving and displaying the conductivity value m transmitted by the data transmission unit and the alarm information generated by the conductivity judgment unit; an alarm unit, wherein when the display unit receives the alarm information, the display unit performs alarm processing according to the importance of the alarm information; The control unit inputs time information through the display unit and sends the time information to the ultrasonic controller, so that the ultrasonic controller controls the ultrasonic generator (14) to operate according to the time information.

7. A self-flow condenser detection device according to claim 4, characterized in that: In the conductivity judgment unit, corresponding alarm information is generated according to the interval of the conductivity value m in the conductivity threshold table, including: The conductivity value m in the conductivity judgment unit is used to judge whether the condenser body (1) is abnormal, and the values ​​in the conductivity threshold table are preset as (m1, m2, m3, m4), wherein m1 is a first preset conductivity value, m2 is a second preset conductivity value, m3 is a third preset conductivity value, m4 is a fourth preset conductivity value, and m1<m2<m3<m4; The alarm information E in the conductivity judgment unit is used to alarm after an abnormality occurs in the condenser body (1). An alarm information matrix E0 is preset, and E0 (E1, E2, E3, E4) is set, where E1 is the first-level alarm information, E2 is the second-level alarm information, E3 is the third-level alarm information, and E4 is the fourth-level alarm information, and E1 is compared according to the importance. <E2<E3<E4; The conductivity judgment unit generates an alarm message E of a corresponding level according to the interval of the conductivity m in the conductivity threshold table; When m<m1, the condenser body (1) is in a normal operating state; When m1≤m<m2, the generated alarm information is the first-level alarm information E1; When m2≤m<m3, the generated alarm information is the second-level alarm information E2; When m3≤m<m4, the generated alarm information is level 3 alarm information E3; When m4<m, the generated alarm information is the fourth-level alarm information E4.

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