CN217045114U - Portable automatic detection alarm control device for welding temperature of temperature control valve - Google Patents
Portable automatic detection alarm control device for welding temperature of temperature control valve Download PDFInfo
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- CN217045114U CN217045114U CN202122367503.0U CN202122367503U CN217045114U CN 217045114 U CN217045114 U CN 217045114U CN 202122367503 U CN202122367503 U CN 202122367503U CN 217045114 U CN217045114 U CN 217045114U
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Abstract
This novel controlling means that belongs to, concretely relates to portable temperature-sensing valve welding temperature automatic detection alarm control device. The method is characterized in that: and the temperature control box is connected with the thermocouple and is also connected with the electric welding machine through a switch. This neotype effect is: the probes of the temperature control device are firmly arranged and adhered, so that the temperature change at the valve core of the temperature control valve can be monitored in real time in all directions, and the condition that the temperature control label is not firmly adhered or loses efficacy is avoided; the temperature control device is adopted to control the temperature change, the control precision is high, the reaction is fast, and the error caused by multiple information transmission among personnel is avoided; the temperature control device adopts automatic control alarm, does not need to increase supervisors, and improves the manual use efficiency; the welding is automatically stopped after the temperature control device gives an alarm, so that the probability of valve core damage caused by manual misoperation is greatly reduced; the temperature control device has small size, light weight, convenient use, repeated use, contrast with the disposable temperature control label with higher price, and reduced construction cost.
Description
Technical Field
This novel controlling means that belongs to, concretely relates to portable temperature-sensing valve welding temperature automatic detection alarm control device.
Background
In the installation process of the temperature control valve (which has requirements on temperature rise of a valve body during welding installation), welding temperature control is a necessary process step in the welding process of the temperature control valve, and is also a key link for ensuring that the temperature control valve cannot be damaged due to overhigh temperature rise of the body caused by welding in the installation process. If the valve core is deformed at high temperature due to overtemperature during welding, the sealing and control performance of the valve is damaged, and the installation quality of the valve is influenced.
The temperature control label of 77 ℃ -127 ℃ is mostly adopted for the welding temperature control of the current temperature control valve, and the temperature of the valve body during the welding of the valve is monitored by sticking the temperature control label on a fixed position of the valve. This is accomplished by observing the temperature label affixed to the valve and verbally communicating information to the person, as shown in figure 1.
The temperature control label has the advantages of convenience in carrying and construction, capability of forming a welding temperature control entity record and the like. At the same time, the method also has the following major disadvantages:
1) the effectiveness of temperature control label attachment is not easily determined. The tightness of the temperature control label is completely determined by the experience and visual inspection of personnel, the quality is not easy to judge, and the failure condition is easy to occur;
2) the temperature rise is fast when the valve welds, leaves the response time for the workman insufficient. The heat conduction speed of the valve is too high, the volume of part of the valve is small, the distance between a temperature measuring area and a welding seam is small, the temperature rise is fast during welding, the overtemperature time from welding to overtemperature is too short (the overtemperature time of the valve of DN8 is less than 10 seconds), the temperature of the valve body is fast over 120 ℃, the requirement of process control is exceeded without the timely response of personnel, and the temperature rise is difficult to control by welding personnel;
3) because welder can't observe the control by temperature change label when welding, temperature observation and early warning are accomplished by monitoring personnel, single unable operation, and the human cost is also high, simultaneously because the supervisor observes that the label discolours, personnel orally transmit and welder hears the instruction and makes action etc. all have certain time delay again, has consumed limited response time, therefore response time can't guarantee.
4) The control precision is not enough, the control is purely manual, all actions are the synthesis of personnel skills and reaction speed, and the control precision is not enough.
5) The temperature control label is invalid due to overtemperature discoloration, and when the valve is cooled to a temperature at which welding can be carried out again cannot be timely mastered, so that the construction efficiency is influenced; in addition, the temperature control label can not be reused, and the production cost is improved.
The defects result in uncontrollable temperature in the welding process of the valve, and the temperature of the valve core is difficult to guarantee, so that the installation quality of the valve is influenced. In addition, the pure manual control mode has high cost and low efficiency.
SUMMERY OF THE UTILITY MODEL
This is novel to prior art's defect, provides a portable temperature-sensing valve welding temperature automatic detection alarm control device.
This novel is so realized: the utility model provides a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control box is connected with the thermocouple and is also connected with the electric welding machine through a switch.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the thermocouple is arranged in a designated area of the thermostatic valve.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control box comprises a control device integrated with a temperature controller, a relay and an alarm, the control device is powered by a direct current power supply of the temperature control box, and the control device is connected with the electric welding machine through an electric wire and a switch.
As above a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the control device of the temperature control box is connected with a delay display circuit in parallel, and the delay display circuit comprises a delayer, a resistor and an overtemperature indicator lamp which are connected in parallel.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the delayer delays for 3 seconds.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control box comprises a shell, an alarm lamp display position, a power lamp display position and a temperature analyzer display position are arranged on the shell, and a power interface is further arranged on the shell.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control box is connected with the temperature control valve through a cable.
As above-mentioned a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control valve comprises a valve body and a connecting pipeline, wherein a workshop welded junction is formed between the valve body and the connecting pipeline, and a field welded junction is formed between the connecting pipeline and the connecting pipeline.
This neotype effect that is showing is: (1) the probes of the temperature control device are firmly arranged and adhered, so that the temperature change at the valve core of the temperature control valve can be monitored in real time in all directions, and the condition that the temperature control label is not firmly adhered or loses efficacy is avoided;
(2) the temperature control device is adopted to control the temperature change, the control precision is high, the reaction is fast, and the error caused by multiple information transmission among personnel is avoided;
(3) the temperature control device adopts automatic control alarm, does not need to increase supervisors, and improves the manual use efficiency;
(4) the welding is automatically stopped after the temperature control device gives an alarm, so that the probability of valve core damage caused by manual misoperation is greatly reduced;
(5) the temperature control device has small size, light weight, convenient use, repeated use, contrast with the disposable temperature control label with higher price, and reduced construction cost.
Drawings
FIG. 1 is a schematic diagram of a conventional temperature control process;
FIG. 2 is a schematic diagram of automatic control of welding temperature of a thermostatic valve;
FIG. 3 is a circuit diagram of an automatic control of the welding temperature of the temperature control valve;
FIG. 4 is a layout view and a manufacturing reference view of the temperature control box;
FIG. 5 is a test chart of the welding temperature automatic control box;
fig. 6 is a schematic view of a temperature control valve installation module.
In the figure: 1. a thermocouple, 2, a thermocouple output line, 3, a welding power supply control box of the temperature control valve, 4, a temperature controller, a relay, 5, a power line, 6, a direct current power supply, 7, a direct current power supply, 8, an analog switch signal line, 9, a welding handle switch, 10, an electric welding machine, 11, a welding machine power line, 12, a temperature controller temperature alarm, 13, a self-locking switch, 14, a time delay 3S, 15, an alarm indicator lamp, 16, a power lamp, 17, a lock, 18, a platinum thermal resistor, 19, a temperature control valve, 20, a platinum thermal resistor lead-out port, 21, a welding gun control line lead-out port, 22, a connecting welding gun control line, 23, a welding machine display, 24, a workshop welding port, 25 and an on-site welding port are arranged in a setting area of the temperature control valve.
Detailed Description
A portable automatic detection alarm control device for welding temperature of a temperature control valve utilizes an automatic control system composed of a modern temperature-sensing detector, an automatic temperature control instrument, a time relay, a time delay relay, an alarm and a direct current battery, and is organically combined with a welding machine control circuit.
The temperature control device consists of an automatic temperature control instrument, a platinum resistor, a time relay, a time delay relay, an alarm, a direct current power supply and corresponding wires, and is integrated into a light and small suitcase according to the sizes of all components, so that the temperature control device is convenient to operate and carry. The ambient temperature of the valve core of the temperature control valve is fed back to the automatic temperature control instrument in real time through the temperature-sensitive detector, and the temperature control instrument controls an alarm and welding operation by analyzing a temperature signal.
The temperature control device provides electric energy for electric elements in the device through the rechargeable lithium battery, the normal discharge time of the lithium battery is about 10 hours, and the daily work requirement is met; the temperature sensing detector adopts a PT100 small platinum thermal resistor, has the characteristics of high sensitivity, small volume, high heat conduction and the like, and can feed back temperature signals in time; the automatic temperature control instrument adopts a small-size and portable rainbow-moistening OHR-E702 series multi-loop measurement display control instrument, has the parameters of 16 loops, the measurement precision of 0.2 percent and the refresh period of 0.5 second/6 paths, and has the characteristics of high precision, low energy consumption, quick response and the like; the time delay relay is used for simulating the time delay welding stopping action of a welder when the welding is stopped, and keeping the arc-closing time of about 3 seconds when the welding stopping procedure is started, so that a welded junction can be protected by argon gas, the welding can not be stopped immediately, and a welding pit is prevented from being left. The requirement of controlling the welding temperature of the temperature control valve is met through the mutual matching of all electrical elements.
According to the design scheme, the automatic control circuit is manufactured into an automatic valve welding temperature control box, as shown in fig. 4 and 5, the size of the automatic valve welding temperature control box is equivalent to that of A4 paper, and the weight of the automatic valve welding temperature control box is less than 4 kilograms. The test meets the automatic control requirement of the design, and the test picture is shown in figure 5.
In actual field operation, a platinum resistor temperature sensor (with a high-conductivity metal patch) is firstly adhered to a valve by using a high-temperature adhesive tape, the temperature rise of the valve is automatically detected, and a certain number of sensors are arranged according to the size of the valve. The platinum resistance temperature sensor is connected to a wiring terminal of the temperature controller, temperature signals are transmitted to a multi-loop measurement display controller (namely the temperature controller), and the temperature controller can be used for displaying the temperature of a valve measuring point in real time in a circulating mode.
The temperature controller parameters are set according to the valve temperature control requirement, and the valve temperature is required to be controlled at 120 degrees according to the Tianwan nuclear power station, and the welding temperature rise has certain delay and needs to be slightly less than 120 degrees according to an empirical set value. The temperature controller automatically judges whether the temperature exceeds the critical temperature according to the temperature rise of the sensor, and an alarm signal is sent out when a set critical point is reached; in order to avoid frequent fluctuations at the critical temperature, which affects the overall circuit control, a return difference needs to be set, which is set to 5 degrees. After the temperature reaches the set temperature, an internal relay of the temperature controller is triggered to send out a unified alarm signal. The alarm signal is fed back to an external relay circuit (namely a time relay coil and an intermediate relay) through an alarm output point of the temperature controller, and an audible and visual alarm is lightened to give an alarm.
After the alarm contact of the temperature controller is closed, a coil S of the time relay is electrified and closed, an intermediate relay connected in the circuit is electrified and then started, and a normally closed switch is opened, so that the time relay S is triggered to start a delay action, and the time relay releases a closed switch circuit 3 seconds after power failure (the time is set according to welding process requirements). The process simulates the welder torch switch action. And after the welding machine receives the closing signal, the welding power supply is automatically stopped by an automatic control circuit of the welding machine according to the process requirement, and the welding is stopped.
In order to reduce the uncontrollable factors of welding of the on-site temperature control valve, a temperature control valve installation module can be manufactured, pipelines with the length of 1 meter are respectively welded at the two ends of the temperature control valve in advance in a workshop, and only the pipelines are welded on the site, so that the on-site welding efficiency can be improved, and the quality of the temperature control valve can be ensured.
The automatic control circuit is already trial-manufactured in a workshop, a valve welding temperature control test is carried out, and the action matching and actual recording data of the temperature controller and the relay are shown in the following table:
table 1: actual measurement data of action time of temperature controller and relay
Through the data comparison and analysis of the table 1, the relay of the automatic control circuit acts within the limited temperature, and the temperature controller and the temperature control label display temperature within the control set range when the welding is stopped, so that the design requirements are met. Practice proves that the device is more accurate and safer than the original construction process, and the expected effect is achieved.
Claims (6)
1. The utility model provides a portable temperature-sensing valve welding temperature automatic detection alarm control device which characterized in that: the temperature control box is connected with the thermocouple and is also connected with the electric welding machine through a switch;
the thermocouple is arranged in the designated area of the temperature control valve;
the temperature control box comprises a control device integrated with a temperature controller, a relay and an alarm, the control device is powered by a direct current power supply of the temperature control box, and the control device is connected with the electric welding machine through an electric wire and a switch.
2. The portable automatic welding temperature detection and alarm control device for the thermostatic valve as claimed in claim 1, wherein: the control device of the temperature control box is connected with a delay display circuit in parallel, and the delay display circuit comprises a delayer, a resistor and an overtemperature indicator lamp which are connected in parallel.
3. The portable automatic temperature control valve welding temperature detection alarm control device as claimed in claim 2, characterized in that: the delayer delays for 3 seconds.
4. The portable automatic welding temperature detection and alarm control device for the thermostatic valve as claimed in claim 3, wherein: the temperature control box comprises a shell, an alarm lamp display position, a power lamp display position and a temperature analyzer display position are arranged on the shell, and a power interface is further arranged on the shell.
5. The portable automatic temperature control valve welding temperature detection alarm control device as claimed in claim 4, wherein: the temperature control box is connected with the temperature control valve through a cable.
6. The portable automatic temperature control valve welding temperature detection alarm control device as claimed in claim 5, characterized in that: the temperature control valve comprises a valve body and a connecting pipeline, wherein a workshop welded junction is formed between the valve body and the connecting pipeline, and an on-site welded junction is formed between the connecting pipeline and the connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122367503.0U CN217045114U (en) | 2021-09-28 | 2021-09-28 | Portable automatic detection alarm control device for welding temperature of temperature control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122367503.0U CN217045114U (en) | 2021-09-28 | 2021-09-28 | Portable automatic detection alarm control device for welding temperature of temperature control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217045114U true CN217045114U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122367503.0U Active CN217045114U (en) | 2021-09-28 | 2021-09-28 | Portable automatic detection alarm control device for welding temperature of temperature control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217045114U (en) |
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2021
- 2021-09-28 CN CN202122367503.0U patent/CN217045114U/en active Active
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