阅读说明：本技术 一种减温减压器自动投入方法 (Automatic putting-in method of temperature and pressure reducer ) 是由 谭秭阳 宋孝全 田华 余正斌 张光权 杜官怀 向俊波 游毕尚 于 2020-12-10 设计创作，主要内容包括：本发明提供了一种减温减压器自动投入方法,其包括有以下步骤：S1.将背压汽轮机组跳闸信号与减温减压器投入信号进行联锁；S2.将减温减压器置于热备状态；S3.取背压汽轮机组的当前值与预设值比较；S4.若背压汽轮机组的当前值小于或等于预设值,则减温减压器蒸汽进口隔离电动门开；若背压汽轮机组的当前值大于预设值,则减温减压器蒸汽进口隔离电动门关。本发明其解决了现有技术中因背压汽轮机组跳闸后减温减压器不能及时投入的技术问题。(The invention provides an automatic putting method of a temperature and pressure reducer, which comprises the following steps: s1, interlocking a tripping signal of a back pressure turbine set with a putting signal of a temperature and pressure reducer; s2, placing the temperature and pressure reducer in a hot standby state; s3, comparing the current value of the back pressure steam turbine set with a preset value; s4, if the current value of the back pressure steam turbine set is smaller than or equal to the preset value, opening an isolation electric door of a steam inlet of the temperature and pressure reduction device; and if the current value of the back pressure steam turbine set is greater than the preset value, closing the steam inlet isolation electric door of the temperature and pressure reducer. The invention solves the technical problem that the temperature and pressure reducer cannot be put into use in time after the back pressure turbine set trips in the prior art.)

1. An automatic putting method of a temperature and pressure reducer is characterized by comprising the following steps:

s1, interlocking a tripping signal of a back pressure turbine set with a putting signal of a temperature and pressure reducer;

s2, placing the temperature and pressure reducer in a hot standby state;

s3, comparing the current value of the back pressure steam turbine set with a preset value;

s4, if the current value of the back pressure steam turbine set is smaller than or equal to the preset value, opening an isolation electric door of a steam inlet of the temperature and pressure reduction device; and if the current value of the back pressure steam turbine set is greater than the preset value, closing the steam inlet isolation electric door of the temperature and pressure reducer.

2. An automatic putting method of a temperature and pressure reducer as recited in claim 1, wherein the step S3 comprises the steps of:

s31, comparing a remote pressure value of a safety oil pipeline of the back pressure steam turbine set with a preset value;

and S32, comparing the safety oil pressure establishment value of the back pressure steam turbine set with a preset value.

3. The automatic putting method of the temperature and pressure reducer as claimed in claim 2, wherein when the remote pressure value of the back pressure turbine unit safety oil pipe and the back pressure turbine unit safety oil pressure establishment value are both less than or equal to a preset value, the electric door is opened at the steam inlet of the temperature and pressure reducer; and when the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure establishment value of the back pressure steam turbine set are both larger than the preset value, closing the steam inlet isolation electric door of the temperature and pressure reduction device.

4. An automatic putting-in method of a temperature and pressure reducer according to any one of claims 1 to 3, wherein the preset value is 0.8 to 1.

5. The automatic commissioning method of a temperature and pressure reducer as recited in claim 1 wherein said step S4 is controlled by hscs 6 module.

6. An automatic putting method of a temperature and pressure reducer as recited in claim 5, wherein the step S4 comprises the steps of:

s41, respectively connecting a fully-opened feedback port of a steam inlet isolation electric door of the temperature and pressure reducer, a fully-closed feedback port of the steam inlet isolation electric door of the temperature and pressure reducer and a fault feedback port of the steam inlet isolation electric door of the temperature and pressure reducer to a V1 pin, a V2 pin and an L0 pin of an HSSCS6 module;

s42, taking the current value of the back pressure turbine set as input to be connected to an L6 pin of the HSSCS6 module;

s43, respectively connecting the steam inlet isolation electric door opening instruction port of the temperature and pressure reducer, the steam inlet isolation electric door closing instruction port of the temperature and pressure reducer and the steam inlet isolation electric door stop instruction port of the temperature and pressure reducer to a DV pin, an RV pin and an SP pin of the HSSCS6 module.

7. The automatic commissioning method of a temperature and pressure reducer as recited in claim 6 further comprising step S44 of connecting the remote permission port of the electric door of the steam inlet isolation of the temperature and pressure reducer to the SD pin of the HSSCS6 module.

Technical Field

The invention relates to the technical field of interlocking protection, in particular to an automatic input method of a temperature and pressure reducer.

Background

If the temperature and pressure reducer can not be put into use in time after the tripping operation of the back pressure steam turbine set, the following two conditions can be caused, firstly: steam is interrupted and heat supply cannot be continued; secondly, the method comprises the following steps: the boiler steam pressure is over-pressurized to cause accidents. The tripping of the back pressure steam turbine set is an emergency, the temperature and pressure reducer needs to be opened in time to prevent overpressure and ensure normal operation of subsequent sections, and particularly, accidents can be caused if the mental state of personnel is not good at night and cannot be handled in time. At present, most of opening modes of the temperature and pressure reducers still stay on manual operation, and the manual operation has certain time delay and still has certain danger.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an automatic input method of a temperature and pressure reducer, which solves the technical problem that the temperature and pressure reducer cannot be input in time after a back pressure steam turbine set trips in the prior art.

An automatic putting method of a temperature and pressure reducer comprises the following steps:

s1, interlocking a tripping signal of a back pressure turbine set with a putting signal of a temperature and pressure reducer;

s2, placing the temperature and pressure reducer in a hot standby state;

s3, comparing the current value of the back pressure steam turbine set with a preset value;

s4, if the current value of the back pressure steam turbine set is smaller than or equal to the preset value, opening an isolation electric door of a steam inlet of the temperature and pressure reduction device; and if the current value of the back pressure steam turbine set is greater than the preset value, closing the steam inlet isolation electric door of the temperature and pressure reducer.

The technical principle of the invention is as follows: when the device is used, the tripping signal of the back pressure steam turbine set and the input signal of the temperature and pressure reducing device are interlocked, so that the phenomenon can be timely fed back to the temperature and pressure reducing device after the back pressure steam turbine set trips, and the back pressure steam turbine set is prompted to make a corresponding instruction; in addition, the current value of the backpressure steam turbine set can be rapidly reduced after tripping, the current value is compared with the preset value, if the current value is smaller than or equal to the preset value, the backpressure steam turbine set trips, and the temperature and pressure reducing device can be connected with the isolation electric door after being interlocked and put into use, so that continuous heat supply can be guaranteed, and boiler accidents caused by overpressure of a boiler are avoided.

Compared with the prior art, the invention has the following beneficial effects: the technical problem that the temperature and pressure reducing device cannot be timely put into use after the back pressure steam turbine set trips is solved by interlocking the back pressure steam turbine set and the temperature and pressure reducing device and comparing the current value of the back pressure steam turbine set; the temperature and pressure reducing device can be timely opened to isolate the electric door after the back pressure turbine set trips in operation, so that the electric door can be immediately put into use, and time for manually opening the electric door and accidents caused by the fact that the electric door is staggered or leaks due to psychological stress of personnel caused by emergency are saved.

Preferably, step S3 includes the following steps:

s31, comparing a remote pressure value of a safety oil pipeline of the back pressure steam turbine set with a preset value;

and S32, comparing the safety oil pressure establishment value of the back pressure steam turbine set with a preset value.

Preferably, when the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure establishment value of the back pressure steam turbine set are both smaller than or equal to a preset value, the steam inlet isolation electric door of the temperature and pressure reduction device is opened; and when the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure establishment value of the back pressure steam turbine set are both larger than the preset value, closing the steam inlet isolation electric door of the temperature and pressure reduction device.

Preferably, the preset value is 0.8-1.

Preferably, the step S4 is controlled by the hscs 6 module.

Preferably, step S4 includes the following steps:

s41, respectively connecting a fully-opened feedback port of a steam inlet isolation electric door of the temperature and pressure reducer, a fully-closed feedback port of the steam inlet isolation electric door of the temperature and pressure reducer and a fault feedback port of the steam inlet isolation electric door of the temperature and pressure reducer to a V1 pin, a V2 pin and an L0 pin of an HSSCS6 module;

s42, taking a current value signal of the back pressure turbine set as an input to be connected to an L6 pin of the HSSCS6 module;

s43, respectively connecting the steam inlet isolation electric door opening instruction port of the temperature and pressure reducer, the steam inlet isolation electric door closing instruction port of the temperature and pressure reducer and the steam inlet isolation electric door stop instruction port of the temperature and pressure reducer to a DV pin, an RV pin and an SP pin of the HSSCS6 module.

Preferably, step S44 is further included to connect the remote permission port of the attemperator steam inlet isolation power door to the SD pin of the hscs 6 module.

Drawings

FIG. 1 is a flowchart of a method according to a first embodiment of the present invention;

fig. 2 is a schematic connection diagram of an hscs 6 module according to an embodiment of the invention;

Detailed Description

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention will be further explained with reference to fig. 1 and 2.

Example one

An automatic putting method of a temperature and pressure reducer comprises the following steps:

s1, interlocking a tripping signal of a back pressure turbine set with a putting signal of a temperature and pressure reducer;

s2, placing the temperature and pressure reducer in a hot standby state;

s3, comparing the current value of the back pressure steam turbine set with a preset value of 0.8;

s4, if the current value of the back pressure turbine set is less than or equal to the preset value of 0.8, opening an isolation electric door of a steam inlet of the temperature and pressure reducer; if the current value of the back pressure steam turbine set is greater than the preset value of 0.8, the steam inlet isolation electric door of the temperature and pressure reduction device is closed.

Step S3 includes the following steps:

s31, comparing a remote pressure value of the safety oil pipeline of the back pressure steam turbine set with a preset value of 0.8;

s32, comparing the safety oil pressure establishment value of the back pressure steam turbine set with a preset value of 0.8.

When the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure building value of the back pressure steam turbine set are simultaneously less than or equal to the preset value of 0.8, the steam inlet isolation electric door of the temperature and pressure reducer is opened; when the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure building value of the back pressure steam turbine set are simultaneously greater than the preset value of 0.8, the steam inlet isolation electric door of the temperature and pressure reduction device is closed.

Under normal conditions, the current value of the back pressure steam turbine set is required to be 1.8-1.9, and after the back pressure steam turbine set trips, the safety oil pressure can be rapidly discharged, so that whether the current back pressure steam turbine set trips or not can be judged by establishing a value through the safety oil pipeline remote transmission pressure and the safety oil pressure, and the corresponding instruction is executed by the isolation electric door of the steam inlet of the temperature and pressure reducer according to the judgment result, so that the purpose of real-time monitoring and heat supply is achieved, the temperature and pressure reducer is timely put into use after the back pressure steam turbine set trips, manual operation is not needed, and heat supply interruption or accidents are avoided.

Step S4 employs hscs 6 module control.

Step S4 includes the following steps:

s41, respectively connecting a full-opening feedback port of the steam inlet isolation electric door of the temperature and pressure reducer, a full-closing feedback port of the steam inlet isolation electric door of the temperature and pressure reducer and a fault feedback port of the steam inlet isolation electric door of the temperature and pressure reducer to a V1 pin, a V2 pin and an L0 pin of an HSSCS6 module (namely three states of the steam inlet isolation electric door of the temperature and pressure reducer);

s42, taking a safety oil pipeline remote pressure of the back pressure steam turbine set and a safety oil pressure establishing value of the back pressure steam turbine set as input to be connected to an L6 pin of an HSSCS6 module;

s43, respectively connecting the steam inlet isolation electric door opening instruction port of the temperature and pressure reducer, the steam inlet isolation electric door closing instruction port of the temperature and pressure reducer and the steam inlet isolation electric door stop instruction port of the temperature and pressure reducer to a DV pin, an RV pin and an SP pin of the HSSCS6 module.

Comparing the remote transmission pressure value of the safety oil pipeline of the current back pressure steam turbine set and the safe oil pressure establishment value of the back pressure steam turbine set with a preset value of 0.8, and outputting a comparison result to make a corresponding instruction on an isolation electric door at an inlet of the temperature and pressure reducer.

Step S44 is also included to connect the remote permission port of the attemperator steam inlet isolation electrically operated door to the SD pin of the HSSCS6 module. Thereby realizing remote control.

The working principle of the embodiment is as follows: when the device is used, the tripping signal of the back pressure steam turbine set and the input signal of the temperature and pressure reducing device are interlocked, so that the phenomenon can be timely fed back to the temperature and pressure reducing device after the back pressure steam turbine set trips, and the back pressure steam turbine set is prompted to make a corresponding instruction; in addition, the pressure value and the safe oil pressure building value of the safe oil pipeline of the back pressure steam turbine set can be rapidly reduced after tripping, the two values are respectively compared with the preset value, when the two values are required to be simultaneously smaller than or equal to the preset value, the back pressure steam turbine set trips, and the temperature and pressure reducing device can be connected with the isolation electric door after being interlocked and put into use, so that continuous heat supply can be guaranteed, and boiler accidents caused by overpressure of the boiler are avoided.

In the embodiment, the back pressure steam turbine set and the temperature and pressure reducing device are interlocked, and the pressure value and the safe oil pressure establishing value are remotely transmitted by comparing the safe oil pipeline of the current back pressure steam turbine set, so that the steam inlet isolation electric door of the temperature and pressure reducing device is prompted to carry out corresponding instructions, and the technical problem that the existing temperature and pressure reducing device cannot be put into use in time after the back pressure steam turbine set trips is solved; the temperature and pressure reducing device can be timely opened to isolate the electric door after the back pressure turbine set trips in operation, so that the electric door can be immediately put into use, and time for manually opening the electric door and accidents caused by the fact that the electric door is staggered or leaks due to psychological stress of personnel caused by emergency are saved.

Example two

And S3, comparing the remote transmission pressure value of the safety oil pipeline of the back pressure steam turbine set and the safety oil pressure establishment value of the back pressure steam turbine set with a preset value 1. When the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure establishment value of the back pressure steam turbine set are simultaneously less than or equal to a preset value 1, the steam inlet isolation electric door of the temperature and pressure reduction device is opened; when the remote pressure value of the safety oil pipeline of the back pressure steam turbine set and the safe oil pressure building value of the back pressure steam turbine set are simultaneously greater than a preset value 1, the steam inlet isolation electric door of the temperature and pressure reduction device is closed.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.