CN212452902U - Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying - Google Patents
Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying Download PDFInfo
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- CN212452902U CN212452902U CN202020847265.6U CN202020847265U CN212452902U CN 212452902 U CN212452902 U CN 212452902U CN 202020847265 U CN202020847265 U CN 202020847265U CN 212452902 U CN212452902 U CN 212452902U
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Abstract
The utility model discloses a constant temperature and liquid level water supply system of electronic grade glass fiber wire drawing spraying, include: the inner side wall of the pure water tank is provided with a temperature detector, and the lower end area of the inner side wall is provided with a pressure transmitter; the temperature detector and the pressure transmitter are respectively in communication connection with the PID unit; the water inlet control device comprises a water inlet pipeline and an electric regulating valve which is arranged on the water inlet pipeline and is electrically connected with the PID unit; the pure water heating control device comprises a steam coil pipe, wherein the inlet end of the steam coil pipe is penetrated by a pure water tank and is connected with a steam pipeline, the steam pipeline is provided with a pneumatic regulating valve which is electrically connected with the PID unit, and the outlet end of the steam pipeline is connected with a condensed water drain pipe; the inlet end of the wire drawing spraying device is in conduction connection with the side wall of the pure water tank, and the outlet end of the wire drawing spraying device is connected with the spraying nozzle through an output pipeline. The utility model discloses effectively reduce because of the undulant spraying temperature who causes of water consumption undulant, improve the temperature control precision, guarantee water supply system's continuation, stability, reduce the off-the-shelf quality of wire drawing and output loss.
Description
Technical Field
The utility model relates to a water supply system control technical field, concretely relates to constant temperature and constant liquid level water supply system of electronic grade glass fiber wire drawing spraying.
Background
The wire drawing pure water spraying system is an important ring in the production link of electronic grade glass fiber, the stability and the reliability of the operation of the system directly influence the product quality and the quality of the glass fiber yarn, and the system has great influence on the production cost and the production benefit of enterprises.
The water level control of the existing constant-temperature water supply system mostly adopts the high limit and the low limit of a floating ball to control the switch of an electromagnetic valve, so that the liquid level continuously fluctuates between the high limit and the low limit; the temperature control adopts a set temperature control meter to control the air inlet of the steam regulating valve, the temperature cannot be accurately controlled, and the fluctuation of the liquid level of the water tank also causes the great fluctuation of the water temperature. In the production process of the electronic grade glass fiber, the temperature of spraying water for cooling is required to be constantly controlled within +/-0.5 ℃, the existing control system cannot meet the requirement, the actual temperature fluctuation is +/-5 ℃, the quality of finished yarn is poor, and the product quality of a company is reduced, so that the loss is caused.
In view of the above, it is desirable to provide a constant-temperature and constant-liquid-level water supply system capable of effectively reducing the spray temperature fluctuation caused by the fluctuation of the water consumption and improving the temperature control precision.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electronic grade glass fiber wire drawing spraying constant temperature and liquid level water supply system, include:
the inner side wall of the pure water tank is provided with a temperature detector; and the lower end area of the inner side wall is provided with a pressure transmitter; the temperature detector and the pressure transmitter are respectively in communication connection with a PID unit in the DSC control system;
the water inlet control device is arranged above the pure water tank and comprises a water inlet pipeline and an electric regulating valve which is arranged on the water inlet pipeline and is electrically connected with the PID unit;
the pure water heating control device comprises a steam coil pipe arranged in a pure water tank, wherein the inlet end of the steam coil pipe penetrates through the pure water tank and is connected with a steam pipeline, a pneumatic regulating valve electrically connected with a PID unit is arranged on the steam pipeline, and the outlet end of the steam coil pipe is connected with a condensate water drain pipe;
and the inlet end of the wire drawing spraying device is in conduction connection with the side wall of the pure water tank, and the outlet end of the wire drawing spraying device is connected with a spraying nozzle through an output pipeline.
In the scheme, the wire drawing spraying device comprises a first wire drawing hot pure water pump and a second wire drawing hot pure water pump inlet end which are respectively in conduction connection with the side wall of the pure water tank through a pipeline; the outlet ends of the first wire drawing hot pure water pump and the second wire drawing hot pure water pump are connected with a wire drawing spray nozzle through pipelines; the first drawing hot pure water pump and the second drawing hot pure water pump are connected with the DSC control system; when the first wire drawing hot pure water pump fails and cannot work due to the fault of the frequency converter, the DSC control system controls and starts the second wire drawing hot pure water pump to work.
In the above aspect, the steam coil is installed in a lower end region of the pure water tank.
In the scheme, the pressure transmitter is arranged at the lower end of the inner side wall by 0.5 m.
In the scheme, the device further comprises an alarm device connected with and controlled by the DSC control system, and when the DSC control system detects that the liquid level in the pure water tank is abnormal, the temperature is abnormal or the first wire drawing hot pure water pump is in fault, the alarm device is controlled to give out different alarm sounds.
In the scheme, the system is provided with an upper limit temperature value and a lower limit temperature value, and when the DSC control system detects that the temperature of the liquid in the pure water tank is higher than the upper limit temperature value or lower than the lower limit temperature value, different alarm sounds are emitted.
In the scheme, the system sets a lower limit water level value and an extremely low limit water level value, and different alarm sounds are given when the DSC control system detects that the water level in the pure water tank is lower than the lower limit water level value or the extremely low limit water level value.
In the scheme, a first stop valve and a filter are respectively arranged on pipelines connected between the first wiredrawing hot pure water pump and the pure water tank and between the second wiredrawing hot pure water pump and the pure water tank; and the first wire drawing hot pure water pump and the second wire drawing hot pure water pump are respectively provided with a check valve and a second stop valve on pipelines connected with the output pipeline.
In the above scheme, the output pipeline is connected with a return pipe arranged above the pure water tank, and the return pipe is provided with an outlet pressure regulating valve.
The utility model discloses temperature detector and pressure transmitter real-time supervision liquid temperature and the current pressure of liquid, convert temperature signal and pressure signal into electrical signal transmission to the PID unit respectively, the PID unit is respectively according to temperature signal and pressure signal, and the temperature value and the liquid level value of settlement, calculate and generate corresponding temperature control signal and liquid level control signal, transmit temperature control signal and liquid level control signal respectively to pneumatic control valve and electrical control valve, be used for adjusting two degree of opening and shutting respectively and come the volume of steam coil pipe of control steam and add the pure water inflow of pure water case, thereby the liquid level of simultaneous control pure water case and the liquid temperature in the pure water case 1; this embodiment utilizes thermodetector and pressure transmitter to constitute PID single loop with electrical control valve and pneumatic control valve respectively and adjusts, guarantees that the liquid level is invariable, and control accuracy is within reaching 2CM, and the control accuracy of temperature reaches 0.5 ℃ within range, effectively reduces because of the undulant spraying temperature fluctuation that causes of water consumption, improves the temperature control precision, guarantees water supply system's continuation, stability, reduces the finished quality of wire drawing and output loss.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a system architecture framework provided by the present invention;
fig. 2 is a schematic diagram of the general electrical control principle provided by the present invention;
FIG. 3 is a schematic diagram of electrical control connection of two wire drawing hot pure water pumps provided by the present invention;
FIG. 4 is a schematic view of an electrical control structure of two wire drawing hot pure water pumps provided by the present invention;
fig. 5 is a schematic view of an electrical control structure of the DSC control system for controlling the electric control valve and starting the control valve according to the present invention;
fig. 6 is the electric control structure diagram of the alarm device provided by the utility model.
Description of reference numerals:
1: a pure water tank; 2: a water inlet control device; 3: a pure water heating control device; 4: a wire drawing and spraying device; 5: a temperature detector; 6: a pressure transmitter; 7: a return pipe; 8: a pressure regulating valve; 21: an electric control valve; 31: a steam coil; 32: a pneumatic regulating valve; 41: a first wire drawing hot pure water pump; 42: a second wire drawing hot pure water pump; 43: a first shut-off valve; 44: a filter; 45: a check valve; 46: a second shut-off valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is described in detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, the utility model provides a constant temperature and constant liquid level water supply system for electronic grade glass fiber drawing and spraying, which comprises:
the pure water tank 1 is connected with a water inlet control device 2, a pure water heating control device 3 and a wire drawing and spraying device 4 of the DSC control system;
the inner side wall of the pure water tank 1 is provided with a temperature detector 5; and the lower end area of the inner side wall is provided with a pressure transmitter 6; the temperature detector 5 and the pressure transmitter 6 are respectively in communication connection with a PID unit in the DSC control system;
the water inlet control device 2 is arranged above the pure water tank 1 to supply water for the pure water tank 1; comprises a water inlet pipeline and an electric regulating valve 21 which is arranged on the water inlet pipeline and is electrically connected with a PID unit;
the pure water heating control device 3 comprises a steam coil 31 arranged in the pure water tank 1, the inlet end of the steam coil 31 penetrates through the pure water tank 1 and is connected with a steam pipeline, a pneumatic regulating valve 32 electrically connected with the PID unit is arranged on the steam pipeline, and the outlet end of the steam coil 31 is connected with a condensed water drain pipe;
the steam coil 31 is installed near the bottom of the pure water tank 1 as much as possible, when pure water needs to be heated, steam is introduced into the steam coil 31, and the steam forms condensed water after releasing heat into the water tank through the steam coil 31 and is discharged through a condensed water drain pipe.
The inlet end of the wire drawing spraying device 4 is in conduction connection with the side wall of the pure water tank 1, and the outlet end of the wire drawing spraying device is connected with a spraying nozzle through an output pipeline and used for conveying pure water in the pure water tank 1 to the spraying nozzle for spraying.
In this embodiment, the temperature detector 5 and the pressure transmitter 6 monitor the liquid temperature and the current pressure of the liquid in real time, convert the temperature signal and the pressure signal into electrical signals to be transmitted to the PID unit, the PID unit calculates and generates a corresponding temperature control signal and a corresponding liquid level control signal according to the temperature signal and the pressure signal, and the set temperature value and the set level value, respectively, and transmits the temperature control signal and the liquid level control signal to the pneumatic control valve 32 and the electric control valve 21, respectively, to adjust the opening and closing degree to control the amount of the steam entering the steam coil 31 and the pure water inflow amount added into the pure water tank 1, thereby simultaneously controlling the liquid level of the pure water tank and the liquid temperature in the pure water tank 1; this embodiment utilizes thermodetector 5 and pneumatic control valve 32 respectively, and pressure transmitter 6 all constitutes PID single loop with electrical control valve 21 and adjusts, guarantees that the liquid level is invariable, and control accuracy is within reaching 2CM, and the control accuracy of temperature reaches 0.5 ℃ within range, effectively reduces the spraying temperature fluctuation because of the fluctuation of water consumption causes, improves the temperature control precision, guarantees water supply system's persistence, stability, reduces the off-the-shelf quality of wire drawing and output loss.
The preferred embodiment is that the pressure transmitter 6 is arranged at the lower end of the inner side wall at 0.5m, in order to ensure the lowest water level when the water inlet is interrupted.
In this embodiment, the wire drawing spraying device 4 preferably includes a first wire drawing hot pure water pump 41 and a second wire drawing hot pure water pump 42 which are respectively connected with the side wall of the pure water tank 1 through a pipeline; outlet ends of the first wire drawing hot pure water pump 41 and the second wire drawing hot pure water pump 42 are connected with a wire drawing spray nozzle through pipelines; the first drawing hot pure water pump 41 and the second drawing hot pure water pump 42 are connected with the DSC control system and used for controlling the start/stop of the first drawing hot pure water pump 41 and the second drawing hot pure water pump 42; this embodiment, through setting up two hot pure water pumps of wire drawing as one respectively and being equipped with the water pump, when first hot pure water pump 41 of wire drawing the unable during operation of converter trouble appearance, DSC control system will control and start second hot pure water pump 42 and carry out work, 2 hot pure water pump of wire drawing's setting realizes carrying constant pressure's pure water (1 is equipped with 1) to the workshop, when the circuit through the design realized single trouble, spare water pump self-starting. The wire drawing hot pure water pump conveys hot pure water in the pure water tank 1 to an on-site spray nozzle for use after pressurizing and stabilizing certain pressure; therefore, the standby water pump is automatically started without manual operation, and the continuity of water supply is ensured.
The preferred embodiment comprises an alarm device connected and controlled by a DSC control system, and when the DSC control system detects that the liquid level in the pure water tank 1 is abnormal, the temperature is abnormal or the first wire drawing hot pure water pump 41 has a fault, the alarm device is controlled to give out different alarm sounds, so that the alarm is advanced under the abnormal condition, and the running reliability of the system is ensured.
In this embodiment, preferably, the alarm mode of the alarm device specifically includes:
the system of the embodiment is provided with an upper limit temperature value and a lower limit temperature value, and when the DSC control system detects that the temperature of the liquid in the pure water tank 1 is higher than the upper limit temperature value or lower than the lower limit temperature value, different alarm sounds are emitted; the system sets a lower limit water level value and an extremely low limit water level value, and different alarm sounds are sent out when the DSC control system detects that the water level in the pure water tank 1 is lower than the lower limit water level value or the extremely low limit water level value. The monitoring personnel who is convenient for of different alarm sounds in time know what fault condition is in to the system, in time overhaul.
In this embodiment, the first cut-off valve 43 and the filter 44 are provided in the pipes connecting the first wire-drawing hot pure water pump 41 and the second wire-drawing hot pure water pump 42 to the pure water tank 1, respectively; the pipeline of the first wire drawing hot pure water pump 41 and the pipeline of the second wire drawing hot pure water pump 42 which are respectively connected with the output pipeline are respectively provided with a check valve 45 and a second stop valve 46; the function of the check valve 45 is mainly to ensure the unidirectional flow of the water flow: under daily conditions, the water outlet stop valves of the two water pumps are opened, and water cannot flow back to the water tank through the stop valves of the standby water pumps.
The output pipeline is connected with a return pipe 7 arranged above the pure water tank 1, and the return pipe 7 is provided with an outlet pressure regulating valve 8. The design of this kind of structure is in order to utilize the pressure of the more convenient regulation water pump export of back flow, and when water pressure was big, increaseed the backward flow volume, guaranteed outlet pressure's stability.
The control principle of the DSC control system for 2 wire drawing pure water pumps, an alarm device, an electric control valve 21, and a pneumatic control valve 32 will be described below with reference to specific electrical connections.
As shown in fig. 2 and fig. 3, a schematic diagram of a control cabinet and electrical schematic diagrams of a first wire drawing hot pure water pump 41 and a second wire drawing hot pure water pump 42 are respectively shown;
as shown in FIG. 2, the present embodiment is further provided with a liquid level display and a temperature display for displaying the liquid level and the temperature in the pure water tank 1, respectively, so as to facilitate real-time monitoring of the temperature and the liquid level in the DCS control computer, and even if the abnormal condition occurs, the abnormal condition can be quickly processed.
In fig. 3, a first wire drawing hot pure water pump 41 and a second wire drawing hot pure water pump 42 are provided in parallel in a circuit; the three-phase end (U, V, W) and the PE end of the first wire-drawing hot pure water pump 41 are respectively connected with pins U2, V2, W2 and PE of a chip VC13 through wiring; pin 11 and pin 12 in chip VC13 are shorted; pin 13 is connected with pin 10 after being connected with a first current relay switch KA21 through a lead wire, and pin 14 is connected with pin 10 after being connected with a first button switch SB13 through a lead wire; pins U1, V1 and W1 are respectively connected with live wires L1, L2 and L3 through a first air switch QF13, and pin PE is respectively connected with a ground wire.
Similarly, the three-phase end (U, V, W) and the PE end of the second wire drawing hot pure water pump 42 are respectively connected with pins U2, V2, W2 and PE of the chip VC14 through wiring; pin 11 and pin 12 in chip VC14 are shorted; pin 13 is connected with pin 10 after being connected with a second relay switch KA26 through a lead wire, and pin 14 is connected with pin 10 after being connected with a second button switch SB14 through a lead wire; pins U1, V1 and W1 are respectively connected with live wires L1, L2 and L3 through a second air switch QF14, and pin PE is respectively connected with a ground wire.
As shown in fig. 4, it is a schematic diagram of a start/stop control circuit of the first wire drawing hot pure water pump 41 and the second wire drawing hot pure water pump 42, wherein,
the starting and stopping of the first wire drawing hot pure water pump 41 are controlled by a first change-over switch SA13, a first switch VC15, a third relay switch KA29 and a first relay KA21 which are connected in series between a breaker QF02 and a zero line N, and a third button switch SB23 which is connected in parallel with the breaker QF02 and the input end of the first relay KA 21; the input end of the first movable contact switch VC16 is connected with a breaker QF02, the output end of the first movable contact switch VC16 is connected with a second relay KA23, a first indicator lamp HL13 and a first time relay KA25 which are connected in parallel, and a zero line N is connected behind the switch to form a fault control circuit of the first wire drawing hot pure water pump 41.
The start and stop of the second wire drawing hot pure water pump 42 are controlled by a second change-over switch SA14, a second switch VC17, a fourth relay switch KA24 and a second relay KA26 which are connected in series between the breaker QF02 and the zero line N, and a fourth button switch SB24 which is connected in parallel with the breaker QF02 and the input end of the second relay KA 26; the input end of the second movable contact switch VC18 is connected with a breaker QF02, the output end of the second movable contact switch VC18 is connected with a fourth relay KA28, a first indicator lamp HL14 and a second time relay KA30 which are connected in parallel, and then the output end of the second movable contact switch is connected with a zero line N to form a fault control circuit of the second wire drawing hot pure water pump 42.
The first switch VC15 and the second switch VC17 are closed, namely a frequency converter stop signal of the first wire drawing hot pure water pump 41 and a frequency converter stop signal of the second wire drawing hot pure water pump 42 respectively, the second rotary switch SA14 is a selection button for interlocking use of the second wire drawing hot pure water pump 42, the second relay KA26 controls the starting of the second wire drawing hot pure water pump 42, when the first wire drawing hot pure water pump 4 fails, the frequency converter of the first wire drawing hot pure water pump 41 generates a fault signal (the first movable contact switch VC16 is closed), the first time relay KA25 times (the time is set to be larger than the deceleration stop time of the frequency converter of the first wire drawing hot pure water pump 41), the relays are closed simultaneously, when the frequency converter of the first wire drawing hot pure water pump 41 completely stops, and the first movable contact switch VC16 is closed, the second relay 26 automatically starts the second wire drawing hot pure water pump 42, so that when the frequency converter controlling the circulating pump fails, by using the fault signal point of the frequency converter, the standby water pump is automatically started without personnel operation, and the alarm is output to ensure the continuity of water supply.
As shown in fig. 5, (a) and (b) are diagrams of electrical connections for controlling the DSC control system according to the control relationship between the temperature detector 5 and the pneumatic regulator valve 32, and between the pressure transmitter 6 and the electric regulator valve 21, respectively.
Specifically, as shown in the figure (a), a DSC control end is connected with a WP01 chip, a WP01 chip is respectively connected with a pressure transmitter 6 and an electric control valve 21, and lines of the electric control valve 21 and the WP01 chip are connected with a third change-over switch SA01 for controlling opening and closing, so that a DSC control system controls the opening degree of the electric control valve 21; specifically, signals detected by the pressure transmitter 6 are input into WP01 (a digital display PID control instrument), in a local state, WP01 outputs control signals through PID operation to directly control the opening of the electric control valve 21, and meanwhile, the instrument outputs one path of signals to a DCS system to serve as a liquid level detection display value. When SA01(LW26-20 universal change-over switch) is switched to remote control, a configured PID module in the DCS system calculates and outputs a control signal to control the opening of the electric control valve 21. The purpose of doing so can realize local control, also can realize remote control, guarantee the security.
As shown in the figure (b), the DSC control end is connected with a WP02 chip, the WP02 chip is respectively connected with a temperature detector 5 and a pneumatic control valve 32, and the pneumatic control valve 32 and the WP02 chip are connected with a fourth change-over switch SA02 for controlling opening and closing, so that the DSC control system controls the opening degree of the pneumatic control valve 32; specifically, a signal detected by the temperature detector 5 is input to a WP02 (digital display PID control instrument), in a local state, the WP01 outputs a control signal through PID operation to directly control the opening of the pneumatic control valve 32, and meanwhile, the instrument outputs a path of signal to a DCS system to serve as a temperature detection display value. When the SA02 is switched to remote control, a configured PID module in the DCS system calculates an output control signal to control the opening of the pneumatic control valve 32. The purpose of doing so can realize local control, also can realize remote control, guarantee the security.
As shown in fig. 6, the electrical connection diagram of the alarm device provided in the present system is provided with a liquid level alarm HA01 and a temperature alarm HA02 which are controlled and triggered by linked relay switches connected in parallel to the DSC control circuit.
The present invention is not limited to the above-mentioned best mode, and any person should learn the structural changes made under the teaching of the present invention, all of which have the same or similar technical solution, and all fall into the protection scope of the present invention.
Claims (9)
1. The utility model provides a constant temperature and constant liquid level water supply system of electronic grade glass fiber wire drawing spraying which characterized in that includes:
the pure water tank (1), the inner side wall of the pure water tank (1) is provided with a temperature detector (5); and the lower end area of the inner side wall is provided with a pressure transmitter (6); the temperature detector (5) and the pressure transmitter (6) are respectively in communication connection with a PID unit in the DSC control system;
the water inlet control device (2) is arranged above the pure water tank (1) and comprises a water inlet pipeline and an electric regulating valve (21) which is arranged on the water inlet pipeline and is electrically connected with the PID unit;
the pure water heating control device (3) comprises a steam coil pipe (31) arranged in the pure water tank (1), the inlet end of the steam coil pipe (31) penetrates through the pure water tank (1) and is connected with a steam pipeline, a pneumatic regulating valve (32) electrically connected with a PID unit is arranged on the steam pipeline, and the outlet end of the steam coil pipe (31) is connected with a condensate water drain pipe;
and the inlet end of the wire drawing spraying device (4) is in conduction connection with the side wall of the pure water tank (1), and the outlet end of the wire drawing spraying device is connected with a spraying nozzle through an output pipeline.
2. The constant-temperature constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 1, wherein the drawing and spraying device (4) comprises a first drawing hot pure water pump (41) and a second drawing hot pure water pump (42) which are respectively in conduction connection with the side wall of the pure water tank (1) through pipelines; outlet ends of the first wire drawing hot pure water pump (41) and the second wire drawing hot pure water pump (42) are connected with a wire drawing spray nozzle through pipelines; the first drawing hot pure water pump (41) and the second drawing hot pure water pump (42) are connected with the DSC control system; when the first hot pure water wire drawing pump (41) has a frequency converter fault and cannot work, the DSC control system controls to start the second hot pure water wire drawing pump (42) to work.
3. The system according to claim 1, wherein the steam coil (31) is installed in the lower region of the pure water tank (1).
4. The constant-temperature constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 1, wherein the pressure transmitter (6) is arranged at the lower end of the inner side wall at a position of 0.5 m.
5. The constant-temperature constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 2, further comprising an alarm device connected with and controlled by the DSC control system, wherein when the DSC control system detects that the liquid level in the pure water tank (1) is abnormal, the temperature is abnormal or the first drawing hot pure water pump (41) is in failure, the alarm device is controlled to give out different alarm sounds.
6. The constant-temperature constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 5, wherein the system is provided with an upper limit temperature value and a lower limit temperature value, and when a DSC control system detects that the temperature of the liquid in the pure water tank (1) is higher than the upper limit temperature value or lower than the lower limit temperature value, different alarm sounds are emitted.
7. The constant-temperature constant-liquid-level water supply system for the drawing and spraying of the electronic-grade glass fibers is characterized in that the system is provided with a lower limit water level value and a lower limit water level value, and when a DSC control system detects that the water level in the pure water tank (1) is lower than the lower limit water level value or the lower limit water level value, different alarm sounds are given.
8. The constant-temperature and constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 2, wherein a first stop valve (43) and a filter (44) are respectively arranged on pipelines connected between the first drawing hot pure water pump (41) and the second drawing hot pure water pump (42) and the pure water tank (1); and the first wire drawing hot pure water pump (41) and the second wire drawing hot pure water pump (42) are respectively provided with a check valve (45) and a second stop valve (46) on pipelines connected with the output pipeline.
9. The constant-temperature constant-liquid-level water supply system for drawing and spraying electronic-grade glass fibers as claimed in claim 1 or 7, wherein a return pipe (7) arranged above the pure water tank (1) is connected to the output pipeline, and an outlet pressure regulating valve (8) is arranged on the return pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020847265.6U CN212452902U (en) | 2020-05-20 | 2020-05-20 | Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying |
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| CN202020847265.6U CN212452902U (en) | 2020-05-20 | 2020-05-20 | Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733930A (en) * | 2020-05-20 | 2020-10-02 | 河南光远新材料股份有限公司 | Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733930A (en) * | 2020-05-20 | 2020-10-02 | 河南光远新材料股份有限公司 | Constant-temperature and constant-liquid-level water supply system for electronic-grade glass fiber drawing and spraying |
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