CN215217745U - Large deviation alarm device for water level meter of heater balance container - Google Patents
Large deviation alarm device for water level meter of heater balance container Download PDFInfo
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- CN215217745U CN215217745U CN202120649310.1U CN202120649310U CN215217745U CN 215217745 U CN215217745 U CN 215217745U CN 202120649310 U CN202120649310 U CN 202120649310U CN 215217745 U CN215217745 U CN 215217745U
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Abstract
The utility model discloses a big alarm device of water level gauge deviation of a heater balance container, which relates to the field of water level deviation alarm of a thermal power generation heater balance container, and comprises a heater, a balance container water level static pressure transmitter, a balance container and a balance container water level lead-out pipe, wherein the side wall of the heater is respectively and fixedly provided with a first communicating pipe and a second communicating pipe, the end of the first communicating pipe is fixedly connected on the side wall of the balance container, the end of the second communicating pipe penetrates through the side wall of the balance container and extends to the inside of the balance container, the change of the water level height in the balance container is automatically judged by utilizing a designed program in a DCS system according to the change of the water level height static pressure in the balance container, the missing condition of the water level of the balance container can be automatically and timely measured and judged, and an acousto-optic alarm signal is sent out to further facilitate the timely water supplement to equipment, the labor intensity of personnel is reduced, and the accurate and timely water level measurement of the heater balance container is ensured.
Description
Technical Field
The utility model relates to a thermal power heater balance container water level deviation warning field especially relates to the big alarm device of heater balance container water level gauge deviation.
Background
A large number of high-pressure heaters, low-pressure heaters and heat supply network heaters are applied in a thermal power plant to improve the circulation efficiency of a steam turbine unit and reduce the power generation coal consumption of the power plant, and a certain number of heaters are arranged in a heat supply unit to heat the condensed water and the feed water of a steam turbine. The water level needs to be measured in the normal working process of the heater to ensure the normal operation of the water level control of the heater. According to the regulation, two liquid level measuring devices with different working principles must be installed on the heater, and a differential pressure transmitter with a balance container commonly used in a thermal power plant measures the water level by using the differential pressure principle (meanwhile, a guided wave radar liquid level meter is used for comparison, so that the accurate measurement of the water level of the heater is ensured). When the power plant measures the water level in the heater, the balance container is mainly used for being matched with the differential pressure transmitter for measurement. Wherein, the balance container is communicated with the steam side of the pressure container, and the water vapor is condensed into liquid water and filled in the balance container to be used as the water level reference of the steam side. Therefore, if the measurement system is to measure accurately, it is necessary to keep the inside of the equilibrium vessel always in a full water state. In actual operation, various failure causes can result in the balancing container being starved or drained of water. After the equipment failure is solved, the balance container needs to be condensed for a long time to be full of water, so that the normal operation of the equipment is influenced;
at the present stage, a technology capable of automatically judging the water level missing condition in the heater balance container in time does not exist, only the difference value of the differential pressure type water level meter and other water level meters (guided wave radar liquid level meters) can be used for comparison, the possibility that the water level (reference water column) of the differential pressure type water level meter balance container is more missing is considered when the difference value is larger, manual water replenishing operation of the balance container is carried out, and water level deviation is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a large deviation alarm device for a water level gauge of a heater balance container.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the large deviation alarm device for the water level meter of the balance container of the heater comprises a heater, a static pressure transmitter of the water level of the balance container, the balance container and a water level leading-out pipe of the balance container, wherein a first communicating pipe and a second communicating pipe are respectively and fixedly arranged on the side wall of the heater, the tail end of the first communicating pipe is fixedly connected to the side wall of the balance container, the tail end of the second communicating pipe penetrates through the side wall of the bottom end of the balance container and extends to the inside of the balance container, a water leading-out pipe of the heater is fixedly connected to the tail end of the second communicating pipe, the tail end of the water leading-out pipe of the heater penetrates through the side wall of the bottom end of the balance container and extends to the outside of the balance container, a ring-shaped funnel of the balance container is fixedly arranged in the balance container, a water leading-out pipe of the balance container penetrates through the side wall of the bottom end of the balance container and extends to the outside of the balance container, the side wall of the balance container water outlet pipe is fixedly connected with a balance container water level outlet pipe, the other end of the balance container water level outlet pipe is fixedly connected with a balance container water level static pressure transmitter, and the side wall of the balance container water level outlet pipe is fixedly provided with a first valve.
Preferably, the top end side wall of the balance container is fixedly connected with a water replenishing pipe, and a second valve is fixedly arranged on the side wall of the water replenishing pipe.
Preferably, the interior of the balance container water level outlet pipe and the interior of the balance container water outlet pipe are communicated with each other.
Preferably, the interior of the equalization vessel water withdrawal pipe is in communication with the interior of the equalization vessel ring funnel.
Preferably, one end of the balance container water level eduction tube connected to the side wall of the balance container water eduction tube is an inlet end of the balance container water level eduction tube, and one end of the balance container water level eduction tube connected to the side wall of the balance container water level static pressure transmitter is an outlet end of the balance container water level eduction tube.
Preferably, one end of the water replenishing pipe connected to the side wall of the balancing container is an outlet end of the water replenishing pipe.
The utility model has the advantages that: the utility model discloses in, according to the change of water level height static pressure in the balanced container, utilize the automatic change of judging water level height in the balanced container of the good procedure of design in the DCS system, can be automatic, timely real-time measurement judge the disappearance condition of balanced container water level to send out audible and visual alarm signal, and then be convenient for carry out timely moisturizing to equipment, reduce personnel's intensity of labour, guarantee that heater balanced container water level measurement is accurate, timely.
Drawings
Fig. 1 is the structural schematic diagram of the large deviation alarm device of the water level gauge of the heater balance container of the utility model.
Reference numbers in the figures: the water level control device comprises a heater 1, a balance container water level static pressure transmitter 2, a balance container ring-shaped funnel 3, a balance container 4, a balance container water outlet pipe 5, a heater water outlet pipe 6, a first valve 7, a balance container water level outlet pipe 8 and a second valve 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, the alarm device for large deviation of the water level gauge of the balance container of the heater comprises a heater 1, a static pressure transmitter 2 of the water level of the balance container, a balance container 4 and a water level leading-out pipe 8 of the balance container, wherein the device is provided with a judging logic which is connected with a DCS system by signals and is used for judging the water level missing condition of the balance container 4 of the heater, the water level is monitored by measuring the differential pressure value between the static pressure in the balance container 4 and the static pressure of the actual water level in the container (which changes along with the rise and fall of the water level), and then changing the differential pressure value into a current signal by a differential pressure transmitter to be transmitted to the DCS, wherein a positive pressure pipe is led out from the balance container 4, a negative pressure pipe is led out from a water side communicating pipe of the heater 1, for a double-chamber balance container, the water level height (reference water column) is constant, when the water level is increased, the water overflows to the overflow chamber through the reference cup, and when the water level is reduced, the water in the reference cup is condensed and supplemented by the steam in the steam chamber;
the side wall of the heater 1 is respectively fixedly provided with a first communicating pipe and a second communicating pipe, the tail end of the first communicating pipe is fixedly connected on the side wall of the balance container 4, the tail end of the second communicating pipe penetrates through the side wall of the balance container 4 and extends to the inside of the balance container 4, the tail end of the second communicating pipe is fixedly connected with a heater water outlet pipe 6, the tail end of the heater water outlet pipe 6 penetrates through the bottom side wall of the balance container 4 and extends to the outside of the balance container 4, the inside of the balance container 4 is fixedly provided with a balance container ring-shaped funnel 3, the bottom side wall of the balance container ring-shaped funnel 3 is fixedly connected with a balance container water outlet pipe 5, the inside of the balance container water outlet pipe 5 is mutually communicated with the inside of the balance container ring-shaped funnel 3, the tail end of the balance container water outlet pipe 5 penetrates through the bottom side wall of the balance container 4 and extends to the outside of the balance container 4, a balance container water level eduction tube 8 is fixedly connected on the side wall of a balance container water eduction tube 5, the inside of the balance container water level eduction tube 8 is communicated with the inside of the balance container water eduction tube 5, the other end of the balance container water level eduction tube 8 is fixedly connected with a balance container water level static pressure transmitter 2, one end of the balance container water level eduction tube 8 connected on the side wall of the balance container water eduction tube 5 is an inlet end of the balance container water level eduction tube 8, one end of the balance container water level eduction tube 8 connected on the side wall of the balance container water level static pressure transmitter 2 is an outlet end of the balance container water level eduction tube 8, a first valve 7 is fixedly arranged on the side wall of the balance container water level eduction tube 8 and used for the isolation and maintenance of the balance container water level static pressure transmitter 2, the first valve 7 is in an open state under normal condition, and a water replenishing tube is fixedly connected on the side wall of the top end of the balance container 4, a second valve 9 is fixedly arranged on the side wall of the water replenishing pipe, and one end of the water replenishing pipe connected to the side wall of the balance container 4 is an outlet end of the water replenishing pipe;
specifically, the static pressure transducer 2 for the water level of the balancing container is used for measuring the static pressure for the water level of the balancing container 4, and is set as P, the actual water level of the balancing container 4 is set as h according to the formula P-0 + ρ gh, h is (P-P0)/ρ g, the difference value between the actual water level and the installation height of the balancing container 4 is the water level deviation value of the balancing container, and is set as Δ h;
in the formula: p is balance container water level static pressure, P0 is heat net heater internal steam pressure, rho is balance container water level density;
in the above formula, the water level density ρ of the balance container can be calculated in the steam turbine DCS according to the drain temperature of the heater 1, and the automatic water level judgment logic of the balance container of the heater is edited in the steam turbine DCS: when the water level deviation value delta h of the balance container 4 is larger than 100mm, an audible and visual alarm signal is sent out to remind an operator on duty, and if an automatic water replenishing system is matched, the water can be replenished into the balance container of the heater in time, so that the accurate and timely water level measurement of the balance container of the heater is ensured.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The large deviation alarm device for the water level meter of the balance container of the heater comprises a heater (1), a static pressure transmitter (2) of the water level of the balance container, the balance container (4) and a water level leading-out pipe (8) of the balance container, and is characterized in that a first communicating pipe and a second communicating pipe are fixedly arranged on the side wall of the heater (1) respectively, the tail end of the first communicating pipe is fixedly connected to the side wall of the balance container (4), the tail end of the second communicating pipe penetrates through the side wall of the balance container (4) and extends to the inside of the balance container (4), a heater water leading-out pipe (6) is fixedly connected to the tail end of the second communicating pipe, the tail end of the heater water leading-out pipe (6) penetrates through the side wall of the bottom end of the balance container (4) and extends to the outside of the balance container (4), a ring-shaped funnel (3) of the balance container is fixedly arranged in the balance container (4), the bottom end side wall of the balance container annular funnel (3) is fixedly connected with a balance container water outlet pipe (5), the tail end of the balance container water outlet pipe (5) penetrates through the bottom end side wall of the balance container (4) and extends to the outside of the balance container (4), a balance container water level outlet pipe (8) is fixedly connected onto the side wall of the balance container water outlet pipe (5), the other end of the balance container water level outlet pipe (8) is fixedly connected with a balance container water level static pressure transmitter (2), and a first valve (7) is fixedly arranged on the side wall of the balance container water level outlet pipe (8).
2. The large deviation alarm device of the water level gauge of the heater balance container as claimed in claim 1, wherein a water replenishing pipe is fixedly connected to the top side wall of the balance container (4), and a second valve (9) is fixedly arranged on the side wall of the water replenishing pipe.
3. The heater balance tank water level gauge deviation alarming device as claimed in claim 1, wherein the inside of the balance tank water level outlet pipe (8) and the inside of the balance tank water outlet pipe (5) are communicated with each other.
4. The heater balance tank water level gauge deviation great alarm device according to claim 1, characterized in that the interior of the balance tank water outlet pipe (5) and the interior of the balance tank ring funnel (3) are communicated with each other.
5. The large deviation alarm device for the water level gauge of the balance container of the heater according to claim 1, wherein one end of the water level outlet pipe (8) of the balance container, which is connected to the side wall of the water outlet pipe (5) of the balance container, is an inlet end of the water level outlet pipe (8) of the balance container, and one end of the water level outlet pipe (8) of the balance container, which is connected to the side wall of the static pressure transmitter (2) of the water level of the balance container, is an outlet end of the water level outlet pipe (8) of the balance container.
6. The large deviation alarm device of the water level gauge of the balance container of the heater as claimed in claim 2, wherein the end of the water replenishing pipe connected to the side wall of the balance container (4) is the outlet end of the water replenishing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120649310.1U CN215217745U (en) | 2021-03-30 | 2021-03-30 | Large deviation alarm device for water level meter of heater balance container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120649310.1U CN215217745U (en) | 2021-03-30 | 2021-03-30 | Large deviation alarm device for water level meter of heater balance container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215217745U true CN215217745U (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120649310.1U Active CN215217745U (en) | 2021-03-30 | 2021-03-30 | Large deviation alarm device for water level meter of heater balance container |
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|---|---|
| CN (1) | CN215217745U (en) |
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2021
- 2021-03-30 CN CN202120649310.1U patent/CN215217745U/en active Active
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