High-temperature net hydrophobic automatic control method

Abstract

The application discloses a high-temperature net hydrophobic automatic control method and relates to the technical field of high-temperature net hydrophobic control.The control process comprises the following steps: continuously measuring the water level of a No.1 heater, adopting single-impulse adjustment of the water level signal, automatically adjusting the opening degree of an electrically-controlled adjusting valve of a positive hydrophobic main pipe of the heater to maintain a constant water level; continuously measuring the water level of a No.2 heater, adopting single-impulse adjustment of the water level signal, automatically adjusting the opening degree of an electrically-controlled adjusting valve of a positive hydrophobic main pipe of the heater to maintain a constant water level; continuously measuring the water level of a hydrophobic tank, adopting single-impulse adjustment of the water level signal, automatically adjusting a frequency conversion device of one hydrophobic pump to maintain a normal water level of the hydrophobic tank, and manually controlling the other two hydrophobic pumps at a working frequency or a frequency conversion frequency, and the three hydrophobic pumps cooperate to automatically adjust the water level.The application optimizes the pipelines of the high-temperature net, additionally installs control mechanisms of the pipelines, strengthens the controllability of the operation of the high-temperature net and effectively improves the hydrophobic control efficiency of the high-temperature net.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature network drainage control, in particular to a high-temperature network drainage automatic control method. BACKGROUND

[0002] The current power generation thermal system is usually composed of multiple unit heating thermal networks, and when the unit fails or in extremely cold weather, a peak heater is put into operation to ensure the temperature of the heat network.

[0003] However, the existing high-temperature network has a complex operation pipeline and mechanism in the direction of automatic control of drainage, low drainage control efficiency, and heat loss of the pipe network, and the heat balance of the pipe network is not enough. SUMMARY

[0004] The purpose of the present application is to provide a high-temperature network drainage automatic control method to solve the problems raised in the background.

[0005] The present application is realized by the following technical scheme:

[0006] The present application is a high-temperature network drainage automatic control method, comprising a No. 1 heater, a No. 2 heater and a drainage tank.

[0007] S1: Install complete pipeline control mechanism;

[0008] S2: Continuous measurement of the water level of the No. 1 heater, single-impulse adjustment of the water level signal, and maintenance of the normal water level of the heater by automatic adjustment of the opening degree of the electrically controlled valve of the positive drainage main pipe;

[0009] S3: Continuous measurement of the water level of the No. 2 heater, single-impulse adjustment of the water level signal, and maintenance of the normal water level of the heater by automatic adjustment of the opening degree of the electrically controlled valve of the positive drainage main pipe;

[0010] S4: Continuous measurement of the water level of the drainage tank, single-impulse adjustment of the water level signal, including three drainage pumps, maintenance of the normal water level of the drainage tank by automatic adjustment of the frequency conversion device of one drainage pump, and remote manual control of the other two drainage pumps at power frequency or variable frequency, and automatic adjustment of the water level by the cooperation of the three drainage pumps.

[0011] In S2 and S3, when the value is higher than 1, an alarm signal is sent, when the value is higher than 2, the emergency water release electric door is opened, when the water level returns to the value of 1, the emergency water release electric door is closed, and when the value is 3, the heater inlet steam electric door is closed.

[0012] In S1, the complete pipeline control mechanism is installed, including steam turbine construction, electrical construction and thermal construction.

[0013] The steam turbine construction includes installing a drain tank and auxiliary pipeline, and installing a No. 1 heater drain main electric regulating valve, a No. 2 heater drain main electric regulating valve, a No. 1 heater drain main emergency drain pipeline and electric door, and a No. 2 heater drain main emergency drain pipeline and electric door.

[0014] The electrical construction includes transforming a drain pump frequency conversion device.

[0015] The thermal construction includes five units of heating networks, remote control of the No. 1 heater steam inlet electric door of the five networks into the heating network DCS system, remote control of the No. 2 heater steam inlet electric door of the five networks into the heating network DCS system, the No. 1 heater drain main electric regulating valve of the five networks into the heating network DCS system, the No. 2 heater drain main electric regulating valve of the five networks into the heating network DCS system, the No. 1 heater drain main emergency drain pipeline and electric door of the five networks into the heating network DCS system, the No. 2 heater drain main emergency drain pipeline and electric door of the five networks into the heating network DCS system, installation of a No. 5 heater drain tank water level measuring device and into the heating network DCS system; further including installation of a No. 1 heater water level (magnetic flip liquid level meter) magnetic flip remote transmission device and into the heating network DCS system, installation of a No. 2 heater water level (magnetic flip liquid level meter) magnetic flip remote transmission device and into the heating network DCS system, remote transmission of the No. 1 and No. 2 heater thermal measurement signals into the heating network DCS system, remote control of the No. 5 network drain pump frequency conversion device into the heating network DCS system.

[0016] The No. 1 and No. 2 heater thermal measurement remote transmission signals include water inlet pressure, water inlet temperature, water outlet pressure, water outlet temperature, drain temperature and drain pressure.

[0017] The present application has the following beneficial effects:

[0018] The high-temperature network drain automatic control method can effectively improve the control efficiency of the high-temperature network drain by optimizing the pipeline of the high-temperature network and installing control mechanisms for each pipeline, thereby improving the controllability of the high-temperature network operation.

[0019] The high-temperature water is exchanged by the No. 5 network, and the heating network is composed of two hot water boilers and two heaters, and the heater heat source is provided by unit extraction steam and desuperheater and pressure reducer;

[0020] The present application can match the heat pipe network of the power generation company with the municipal heat pipe network, reduce the throttling loss of the pipe network and the running, spouting, dripping and leaking of the heat system, and ensure the water balance of the entire heat pipe network.

[0021] Of course, implementing any product of the application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments 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 creative effort on the basis of these drawings.

[0023] Fig. 1 Flow chart of the high-temperature net drainage automatic control system of the present application;

[0024] Fig. 2 Flow chart of the high-temperature net drainage automatic control method of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0026] Embodiment one:

[0027] Please refer to Figs. 1-2 The present application is a high-temperature net drainage automatic control method, which comprises a No. 1 heater, a No. 2 heater and a drainage tank. The automatic control method comprises the following steps:

[0028] S1: install complete pipeline control mechanisms, including steam turbine construction, electrical construction and thermal construction;

[0029] S2: continuously measure the water level of the No. 1 heater, adopt single-impulse adjustment of the water level signal, maintain the normal water level by automatically adjusting the opening degree of the electrically-controlled adjusting valve of the positive drainage main pipe of the heater, send an alarm signal when the water level is higher than 1, open the emergency water discharge electric door when the water level is higher than 2, close the emergency water discharge electric door when the water level returns to the high 1 value, and close the heater steam inlet electric door when the water level is higher than 3;

[0030] S3: continuously measure the water level of the No. 2 heater, adopt single-impulse adjustment of the water level signal, maintain the normal water level by automatically adjusting the opening degree of the electrically-controlled adjusting valve of the positive drainage main pipe of the heater, send an alarm signal when the water level is higher than 1, open the emergency water discharge electric door when the water level is higher than 2, close the emergency water discharge electric door when the water level returns to the high 1 value, and close the heater steam inlet electric door when the water level is higher than 3;

[0031] S4: continuous measurement of the water level in the drain tank, single-impulse adjustment of the water level signal, including 3 drain pumps, maintaining the normal water level in the drain tank by automatic adjustment of the frequency conversion device of 1 drain pump, remote manual control of the remaining 2 drain pumps at power frequency or variable frequency, automatic adjustment of the water level by cooperation of the 3 drain pumps.

[0032] Example Two:

[0033] In this scheme, the construction of the steam turbine includes the installation of a drain tank and auxiliary pipelines, and also includes,

[0034] 1. Installation of an electrically controlled adjustment valve for the drain main of the No. 1 heater;

[0035] 2. Installation of an electrically controlled adjustment valve for the drain main of the No. 2 heater;

[0036] 3. Installation of an emergency water discharge pipeline and electrically controlled gate for the drain main of the No. 1 heater.

[0037] 4. Installation of an emergency water discharge pipeline and electrically controlled gate for the drain main of the No. 2 heater.

[0038] The electrical construction includes the modification of the frequency conversion device of the drain pump;

[0039] The thermal construction includes 5 units of heating networks,

[0040] 1. Remote control of the steam admission electrically controlled gate of the No. 1 heater of the 5th network into the DCS system of the heating network;

[0041] 2. Remote control of the steam admission electrically controlled gate of the No. 2 heater of the 5th network into the DCS system of the heating network;

[0042] 3. Connection of the electrically controlled adjustment valve for the drain main of the No. 1 heater of the 5th network into the DCS system of the heating network;

[0043] 4. Connection of the electrically controlled adjustment valve for the drain main of the No. 2 heater of the 5th network into the DCS system of the heating network;

[0044] 5. Remote control of the emergency water discharge pipeline and electrically controlled gate for the drain main of the No. 1 heater of the 5th network into the DCS system of the heating network;

[0045] 6. Remote control of the emergency water discharge pipeline and electrically controlled gate for the drain main of the No. 2 heater of the 5th network into the DCS system of the heating network;

[0046] 7. Installation of a water level measurement device for the drain tank of the heater of the 5th network and connection into the DCS system of the heating network;

[0047] 8. Installation of a magnetic flip remote transmission device for the water level (magnetic flip liquid level meter) of the No. 1 heater and connection into the DCS system of the heating network;

[0048] 9. Installation of a magnetic flip remote transmission device for the water level (magnetic flip liquid level meter) of the No. 2 heater and connection into the DCS system of the heating network;

[0049] 10. The following thermal measurement remote signals of the No. 1 and No. 2 heaters are reconnected to the heat network DCS system:

[0050] Inlet water pressure, inlet water temperature, outlet water pressure, outlet water temperature, drain temperature, drain pressure, etc.

[0051] 11. The frequency conversion device remote control signal of the No. 5 network drain pump is connected to the heat network DCS system.

[0052] The present application scheme utilizes the No. 5 network to perform high-temperature water heat exchange, and two hot water boilers and two heaters are used to form a heat network, and the heater heat source is provided by the unit extraction steam and the desuperheater.

[0053] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present application, many modifications and changes can be made. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their entire scope and equivalents.

Claims

1. A high-temperature net hydrophobic automatic control method, comprising a No. 1 heater, a No. 2 heater and a hydrophobic tank, characterized in that: The automatic control method comprises the following steps: S1: steam turbine construction, electrical construction and thermal construction; The steam turbine construction comprises adding a drain tank and an auxiliary pipeline, and adding a No. 1 heater drain main electric regulating valve, a No. 2 heater drain main electric regulating valve, a No. 1 heater drain main emergency drain pipeline and an emergency drain electric door, and a No. 2 heater drain main emergency drain pipeline and an emergency drain electric door; The electrical construction comprises reforming a drain pump frequency conversion device; The thermal construction comprises five units of heating networks, and the thermal construction further comprises the following steps: S2: continuously measuring a No. 1 heater water level, adopting a single-impulse regulation of a water level signal, and maintaining a constant water level by automatically regulating a heater drain main electric regulating valve opening degree; S3: continuously measuring a No. 2 heater water level, adopting a single-impulse regulation of a water level signal, and maintaining a constant water level by automatically regulating a heater drain main electric regulating valve opening degree; S4: continuously measuring a drain tank water level, adopting a single-impulse regulation of a water level signal, comprising three drain pumps, and maintaining a normal water level of the drain tank by automatically regulating a drain pump frequency conversion device, and the remaining two drain pumps can be controlled by frequency or frequency conversion remote manual control, and the three drain pumps cooperate to complete automatic water level adjustment. In S2 and S3, when a high value is greater than 1, an alarm signal is sent, when a high value is greater than 2, an emergency drain electric door is opened, when the water level returns to a high value of 1 and disappears, the emergency drain electric door is closed, and when a high value is greater than 3, a heater inlet electric door is closed.

2. The high-temperature mesh hydrophobic automatic control method according to claim 1, characterized by, The No. 1 and No. 2 heater thermal measurement remote signals comprise inlet water pressure, inlet water temperature, outlet water pressure, outlet water temperature, drain temperature and drain pressure.

3. The high temperature mesh hydrophobic automatic control method of claim 1, wherein, ​

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