High-temperature sampling frame blowdown device

Abstract

The utility model belongs to the technical field of water vapor sampling, and discloses a high-temperature sampling frame blowdown device which comprises a plurality of water vapor sampling branches, each water vapor sampling branch comprises a sewage discharge water path, and a sewage discharge valve is arranged on the sewage discharge water path; the pollution discharge executing mechanism comprises a plurality of valve body gears; the valve body gears are rotationally arranged on the surface of the executing mechanism base and located on the same horizontal straight line. Wherein the plurality of valve body gears are respectively connected with a valve rod of the blow-down valve; the guide rail is horizontally arranged above the valve body gears, and the telescopic mechanism is movably arranged on the guide rail; wherein the upper end of the telescopic mechanism is movably connected with the guide rail, and the lower end of the telescopic mechanism vertically extends downwards; the execution gear is rotationally arranged at the lower end of the telescopic mechanism and can be meshed with or separated from the valve body gear. According to the utility model, the opening or closing of the blow-down water paths in the plurality of water vapor sampling branches is realized, the tedious process of operating blow-down valves one by one is avoided, and the operation efficiency and the safety are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the water vapor sampling technical field, especially relate to a high temperature sampling frame blowdown device. BACKGROUND

[0002] When the generator set is running, the accurate monitoring of the water vapor quality in it has an important influence on the prediction of phenomena such as corrosion, scaling and salt accumulation of the unit; in order to ensure the accurate monitoring of the water vapor quality, it is not only necessary to keep the monitoring instrument in a suitable measuring environment all the time, but more importantly, it is necessary to ensure the representativeness of the water vapor sample; therefore, it is often necessary to regularly carry out blowdown operation of the sampling pipeline to avoid the deposition of corrosion products in the sampling pipeline, thereby reducing the accuracy of the monitoring result.

[0003] At present, the existing water vapor sampling usually adopts the manual blowdown mode, however, the sampling pipeline in the generator set is generally more than dozens of ways, when manually blowdown each way, there are technical problems of high safety risk and heavy workload. UTILITY MODEL CONTENT

[0004] In view of the technical problems existing in the prior art, the utility model provides a high temperature sampling frame blowdown device to solve the technical problems of high safety risk and heavy workload existing in the existing water vapor sampling process.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0006] The utility model provides a high temperature sampling frame blowdown device, including a plurality of water vapor sampling branches and blowdown execution mechanism, each water vapor sampling branch contains blowdown waterway, the blowdown valve is provided on the blowdown waterway, the blowdown execution mechanism includes a plurality of valve gear, execution gear, telescopic mechanism, guide rail and execution mechanism base,

[0007] A plurality of valve gears are rotationally arranged on the surface of the execution mechanism base and are located on the same horizontal straight line, wherein a plurality of valve gears are also respectively connected with the valve rod of the blowdown valve, the guide rail is horizontally arranged above a plurality of valve gears, and the telescopic mechanism is movably arranged on the guide rail, wherein the upper end of the telescopic mechanism is movably connected with the guide rail, and the lower end of the telescopic mechanism extends vertically downward, and the execution gear is rotationally arranged at the lower end of the telescopic mechanism and can be engaged or separated from the valve gear.

[0008] Further, the blowdown execution mechanism further includes a gear drive motor, the gear drive motor is installed on the telescopic mechanism and is used to drive the rotation of the execution gear.

[0009] Further, the pollution executing mechanism further comprises a telescopic motor; the telescopic motor is installed on the telescopic mechanism and is used for driving the lower end of the telescopic mechanism to vertically stretch out and retract.

[0010] Further, the pollution executing mechanism further comprises a moving motor; the moving motor is installed on the telescopic mechanism and is used for driving the upper end of the telescopic mechanism to horizontally move along the guide rail.

[0011] Further, each water vapor sampling branch further comprises a sampling pipeline and a sampling main water pipeline; the inlet of the sampling pipeline is connected with a preset sampling point of a water vapor system, and the outlet of the sampling pipeline is provided with two paths; wherein, the first path is connected with the inlet of the sampling main water pipeline, and the second path is connected with the inlet of the pollution water pipeline.

[0012] Further, each water vapor sampling branch further comprises a primary stop valve and a secondary stop valve; the primary stop valve and the secondary stop valve are sequentially connected in series on the sampling pipeline.

[0013] Further, each water vapor sampling branch further comprises a manual stop valve; the manual stop valve is installed on the pollution water pipeline.

[0014] Further, the manual stop valve is in a normally open state.

[0015] Further, each water vapor sampling branch further comprises a temperature sensor; the temperature sensor is used for collecting the temperature of the water sample in the pollution water pipeline; wherein, the pollution valve, the manual stop valve and the temperature sensor are sequentially connected in series.

[0016] Further, the valve rod of the pollution valve is horizontally arranged and is fixedly connected with the valve body gear after penetrating through the executing mechanism base.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] The high-temperature sampling frame blowdown device provided by the utility model, through setting up the blowdown executing mechanism, utilizes the meshing or separation of the executing gear in the blowdown executing mechanism and the corresponding valve gear to realize the opening or closing of the blowdown valve in the corresponding water vapor sampling branch, and further realizes the opening or closing of the blowdown waterway in the several water vapor sampling branches, avoids the tedious process of operating the blowdown valve one by one, greatly improves the operation efficiency and safety, and greatly reduces the workload and time cost of manual operation; wherein, the telescopic mechanism is movably arranged on the guide rail, the position is adjusted according to the need, the executing gear is meshed with different valve gears, the control of different blowdown valves is realized, the operation is more convenient, different working scenes and needs can be adapted to, meanwhile, the several valve gears are rotatably arranged on the surface of the executing mechanism base and located on the same horizontal straight line, the guide rail is horizontally arranged above the valve gear, the telescopic mechanism is movably arranged on the guide rail, and the executing gear is rotatably arranged at the lower end of the telescopic mechanism, so that the whole blowdown executing mechanism is compact in structure, small in occupied space, and beneficial to installation and arrangement in limited space, and is especially suitable for high-temperature sampling frame environment with limited space; secondly, the gear transmission mode is adopted, the opening and closing of the blowdown valve are controlled through the meshing of the executing gear and the valve gear, the accurate action of the blowdown valve can be ensured, and the working performance and stability of the blowdown device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Fig. 1 The overall structure schematic diagram of the high-temperature sampling frame blowdown device provided by the utility model is shown in the figure.

[0021] Fig. 2 The structure schematic diagram of the water vapor sampling branch in the utility model is shown in the figure.

[0022] Fig. 3 The structure schematic diagram of the blowdown executing mechanism in the utility model is shown in the figure.

[0023] Among them, 100 water vapor system;1 sampling pipeline, 2 sampling main waterway, 3 blowdown waterway, 4 blowdown valve, 5 valve gear, 6 executing gear, 7 telescopic mechanism, 8 gear drive motor, 9 guide rail, 10 executing mechanism base;101 primary stop valve, 102 secondary stop valve;301 manual stop valve, 302 temperature sensor. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical schemes and beneficial effects solved in the present application clearer, the technical schemes in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0025] As shown in the accompanying Figs. 1-3 The utility model provides a high temperature sampling frame blowdown device, including a plurality of water vapor sampling branch and blowdown execution mechanism, the inlet of a plurality of water vapor sampling branch is linked with the preset sampling point of water vapor system 100 respectively, blowdown execution mechanism is used for controlling the opening or close of blowdown valve 4 in a plurality of water vapor sampling branch.

[0026] Each water vapor sampling branch includes a sampling pipeline 1, a sampling main waterway 2 and a blowdown waterway 3.

[0027] The inlet of the sampling pipeline 1 is connected to the preset sampling point of the water vapor system 100, and the outlet of the sampling pipeline 1 is provided with two paths; wherein the first path is connected to the inlet of the sampling main waterway 2, and the second path is connected to the inlet of the blowdown waterway 3; a plurality of blowdown valves 4 are arranged on the blowdown waterway 3 in a plurality of water vapor sampling branches; it should be noted that the preset sampling points of the water vapor system are condensate pump outlet, deaerator inlet, deaerator outlet, economizer inlet, main steam sampling point, reheat steam sampling point or high pressure heater drain sampling point.

[0028] Specifically, the sampling pipeline 1 includes a sampling pipeline body, a primary stop valve 101 and a secondary stop valve 102; the inlet of the sampling pipeline body is connected to the preset sampling point of the water vapor system 100; the outlet of the sampling pipeline body is provided in two paths, one of which is connected to the inlet of the sampling main waterway 2, and the other of which is connected to the inlet of the blowdown waterway 3; the primary stop valve 101 and the secondary stop valve 102 are sequentially connected in series on the sampling pipeline body, and the primary stop valve 101 and the secondary stop valve 102 are used to control the on-off of the sampling pipeline body.

[0029] An online chemical instrument is arranged on the sampling main waterway 2 for monitoring the water vapor sample of the preset sampling point of the water vapor system 100.

[0030] The blowdown waterway 3 comprises a blowdown pipeline, a manual stop valve 301 and a temperature sensor 302; the inlet of the blowdown pipeline is connected with the outlet of the sampling pipeline body, the blowdown valve 4, the manual stop valve 301 and the temperature sensor 302 are sequentially connected in series on the blowdown pipeline; wherein the blowdown valve 4 is controlled by the blowdown execution structure to open or close, so as to realize the blowdown function of the blowdown waterway; the manual stop valve 301 is in a normally open state, and is used to shut off the blowdown waterway when the blowdown valve 4 fails.

[0031] The blowdown execution mechanism comprises a plurality of valve body gears 5, an execution gear 6, a telescopic mechanism 7, a gear drive motor 8, a guide rail 9, an execution mechanism base 10, a telescopic motor and a moving motor.

[0032] The execution mechanism base 10 is vertically arranged, and a plurality of valve body gears 5 are rotationally arranged on the surface of the execution mechanism base 10; wherein the plurality of valve body gears 5 are located on the same horizontal straight line and are arranged close to one side of the bottom edge of the execution mechanism base 10; a plurality of valve body gears 5 are also respectively connected with valve stems of the blowdown valves 4; specifically, the horizontal straight line where the plurality of valve body gears 5 are located is parallel to the central axis of the execution mechanism base 10, the number of the plurality of valve body gears 5 is the same as that of the plurality of blowdown valves 4, and they are arranged one by one in correspondence; wherein the valve stems of the blowdown valves 4 are all horizontally arranged and penetrate through the execution mechanism base 10 to be fixedly connected with the corresponding valve body gears 5; it should be noted that the plurality of blowdown valves 4 are located on the same horizontal straight line, and the valve stems of the plurality of blowdown valves 4 are all arranged horizontally, so that the valve body gears 5 and the valve stems of the blowdown valves 4 can be connected correspondingly; preferably, the adjacent two blowdown valves 4 and the adjacent two valve body gears 5 are arranged at equal intervals, and the intervals between the adjacent two blowdown valves 4 and the adjacent two valve body gears 5 are the same.

[0033] The guide rail 9 is horizontally arranged on the surface of the execution mechanism base 10 and located above all the valve body gears 5; wherein the axis of the guide rail 9 is parallel to the central axis of the execution mechanism base 10, and is used as a horizontal moving track of the telescopic mechanism 7; the telescopic mechanism 7 is vertically arranged outside the surface of the execution mechanism base 10 and movably arranged on the guide rail 9; wherein the upper end of the telescopic mechanism 7 is movably connected with the guide rail 9, and the lower end of the telescopic mechanism 7 vertically extends downward; the execution gear 6 is rotationally arranged at the lower end of the telescopic mechanism 7 and can engage or disengage with the valve body gears 5; wherein when the execution structure 6 engages with one of the valve body gears 5 and drives the corresponding valve body gear 5 to rotate through gear engagement, the corresponding blowdown valve 4 can be controlled to open or close.

[0034] The gear driving motor 8, the telescopic motor and the moving motor are all installed on the telescopic mechanism 7; the gear driving motor 8 is used for driving the execution gear 6 to rotate, the telescopic motor is used for driving the lower end of the telescopic mechanism 7 to vertically stretch up and down, and the moving motor is used for driving the upper end of the telescopic mechanism 7 to horizontally move along the guide rail 9.

[0035] Working principle:

[0036] The high-temperature sampling frame blowdown device, when working, is specific as follows:

[0037] When sampling of a preset sampling point in the water vapor system 100 is needed, the primary stop valve 101 and the secondary stop valve 102 in the water vapor sampling branch connected with the preset sampling point are opened, and the blowdown valve 4 is closed; so that the water vapor sample passes through the primary stop valve 101 and the secondary stop valve 102, and then is sampled in the main waterway 2 for water quality monitoring.

[0038] When blowdown of a water vapor sampling branch is needed, the blowdown valve 4 in the water vapor sampling branch is opened for blowdown operation; after the blowdown operation is completed, the blowdown valve 4 is closed.

[0039] It should be noted that when the blowdown valve 4 needs to be opened or closed, the operation is as follows:

[0040] The telescopic mechanism 7 is driven by the moving motor to horizontally move along the guide rail 9 until the telescopic mechanism 7 is located directly above the corresponding valve gear 5, and then the moving motor stops running; next, the lower end of the telescopic mechanism 7 is driven by the telescopic motor to vertically stretch downward until the execution gear 6 is completely engaged with the corresponding valve gear 5, and then the telescopic motor stops running; then, the execution gear 6 is driven by the gear driving motor 8 to rotate forward or reversely, so that the corresponding valve gear 5 rotates forward or reversely through the mutual engagement of the execution gear 6 and the corresponding valve gear 5, and then the valve gear 5 is driven to rotate forward or reversely to open the blowdown valve 4 and start the blowdown operation; when the blowdown is completed, the gear driving motor 8 is used to drive the valve gear 5 to rotate reversely or forwardly through the execution gear 6, so that the blowdown valve 4 is closed, and the current round of blowdown operation is completed.

[0041] After the last or one of the blowdown valves is opened or closed, the telescopic mechanism 7 is driven by the moving motor to horizontally move along the guide rail 9 to the upper side of the next valve gear 5, and then the opening or closing operation of the blowdown valve in the next water vapor sampling branch is performed, so that the blowdown work efficiency is improved, and the simultaneous blowdown of multiple water samples is realized.

[0042] It should be noted that, after the blowdown is performed or ended, the comparison result of the reading of the temperature sensor and the preset water sample temperature threshold can be observed to monitor whether the gear is engaged in place, whether the blowdown valve completes the corresponding action and whether the blowdown valve leaks.

[0043] Optionally, the high-temperature sampling rack blowdown device also comprises a control system; the input end of the control system is connected with the output end of the temperature sensor 301, and the output end of the control system is connected with the gear drive motor 8, the telescopic motor and the moving motor; preferably, the control system is a PLC control system, a DCS system or an industrial computer.

[0044] Specifically, the control system comprises a warning module, a first motor control module, a second motor control module and a third motor control module; the input end of the warning module is connected with the output end of the temperature sensor 302, and the warning module is used for comparing the temperature data collected by the temperature sensor 302 with a preset water sample temperature threshold and generating and outputting a warning signal according to the comparison result; the first motor control module is used for controlling the gear drive motor 8; the second motor control module is used for controlling the telescopic motor; and the third motor control module is used for controlling the moving motor.

[0045] The high-temperature sampling rack blowdown device comprises a gear drive motor 8, a telescopic motor, a moving motor, a temperature sensor 301, a temperature sensor 302, a gear, a telescopic mechanism, a moving mechanism, a blowdown valve, a blowdown execution mechanism and a control system.

[0046] In the utility model, gear drive motor, telescopic motor and moving motor are used as driving mechanism, which provides good foundation for remote control; wherein, the driving mode of telescopic mechanism and execution gear is changed to electric or pneumatic, and corresponding control system is equipped, so that remote automatic control of blowdown valve is realized, so that operator can operate blowdown device outside safe distance, and harm of high temperature, high pressure and other dangerous environment to operator is avoided, and safety of operation is improved.

[0047] The above embodiment is only one of the implementation manners capable of realizing the technical scheme of the present application, and the scope of the present application is not limited to the above embodiment, and any changes, substitutions and other implementation manners easily thought of by those skilled in the art within the technical scope disclosed by the present application are also included.

Claims

1. A high temperature sampling rack blowdown apparatus, comprising: The water vapor sampling branch includes a sewage water path (3) provided with a sewage valve (4); the sewage executing mechanism includes a plurality of valve gear (5), an executing gear (6), an extension mechanism (7), a guide rail (9) and an executing mechanism base (10); A plurality of valve gears (5) are rotationally arranged on the surface of the executing mechanism base (10) and are located on the same horizontal straight line; wherein a plurality of valve gears (5) are respectively connected with the valve stem of the sewage valve (4); the guide rail (9) is horizontally arranged above a plurality of valve gears (5), and the extension mechanism (7) is movably arranged on the guide rail (9); wherein the upper end of the extension mechanism (7) is movably connected with the guide rail (9), and the lower end of the extension mechanism (7) vertically extends downward; the executing gear (6) is rotationally arranged on the lower end of the extension mechanism (7) and can be engaged or separated with the valve gear (5).

2. The high-temperature sampling rack blowdown apparatus of claim 1, wherein, The sewage executing mechanism further includes a gear drive motor (8); the gear drive motor (8) is installed on the extension mechanism (7) and is used to drive the executing gear (6) to rotate.

3. The high-temperature sampling rack blowdown apparatus of claim 1, wherein, The sewage executing mechanism further includes a telescopic motor; the telescopic motor is installed on the extension mechanism (7) and is used to drive the lower end of the extension mechanism (7) to vertically extend or retract.

4. The high-temperature sampling rack blowdown apparatus of claim 1, wherein, The sewage executing mechanism further includes a moving motor; the moving motor is installed on the extension mechanism (7) and is used to drive the upper end of the extension mechanism (7) to move horizontally along the guide rail (9).

5. The high-temperature sampling rack blowdown apparatus of claim 1, wherein, Each water vapor sampling branch further includes a sampling pipeline (1) and a sampling main water path (2); the inlet of the sampling pipeline (1) is connected with a preset sampling point of a water vapor system, and the outlet of the sampling pipeline (1) is provided with two paths; wherein the first path is connected with the inlet of the sampling main water path (2), and the second path is connected with the inlet of the sewage water path (3).

6. The high-temperature sampling rack blowdown apparatus of claim 5, wherein, Each water vapor sampling branch further includes a primary stop valve (101) and a secondary stop valve (102); the primary stop valve (101) and the secondary stop valve (102) are sequentially connected in series on the sampling pipeline (1).

7. The high-temperature sampling rack blowdown apparatus of claim 5, wherein, Each water vapor sampling branch further includes a manual stop valve (301); the manual stop valve (301) is installed on the sewage water path (3).

8. The high-temperature sampling rack blowdown apparatus of claim 7, wherein, The manual stop valve (301) is in a normally open state.

9. The high-temperature sampling rack blowdown apparatus of claim 7, wherein, Each water vapor sampling branch further includes a temperature sensor (302) for collecting the temperature of water sample in the sewage water path (3); wherein the sewage valve (4), the manual stop valve (301) and the temperature sensor (302) are sequentially connected in series.

10. The high-temperature sampling rack blowdown apparatus of claim 1, wherein, The valve stem of the sewage valve (4) is horizontally arranged and penetrates through the executing mechanism base (10) and is fixedly connected with the valve gear (5).

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