CN203672570U - Device for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection - Google Patents
Device for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection Download PDFInfo
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- CN203672570U CN203672570U CN201320882691.3U CN201320882691U CN203672570U CN 203672570 U CN203672570 U CN 203672570U CN 201320882691 U CN201320882691 U CN 201320882691U CN 203672570 U CN203672570 U CN 203672570U
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Abstract
The utility model discloses a device for detecting inner leakage of a steam hydrophobic valve based on valve front pipe wall temperature detection. The device comprises an inner leakage diagnostic unit and a temperature sensor. The inner leakage diagnostic unit comprises a signal transmitter, a signal acquisition card, a microprocessor and a touch display screen. The temperature sensor is connected with an input end of the microprocessor through the signal transmitter and the signal acquisition card. The microprocessor and the touch display screen are connected to each other. The device also comprises a detection box and a copper mounting plate. The inner leakage diagnostic unit is assembled in the detection box. The temperature sensor is adhesively fixed on the copper mounting plate. One end of the copper mounting plate is vertically provided with a copper heat-conducting plate having an arc surface. The arc surface of the copper heat-conducting plate is contacted to the outer wall of a drain pipe of a steam hydrophobic valve to be detected. The device is advantaged in that the temperature sensor is convenient to install and fast to maintain, a heat-insulation layer of the drain pipe cannot be damaged in the maintenance, a heat-insulation protection effect is good, adaptability to severe environment is good, and the service life is long.
Description
Technical field
The utility model relates to valves leakage checkout equipment field, is specifically related to device for detecting leakage in a kind of Automatic steam trap Trap detecting based on pipe surface temperature before valve.
Background technology
A large amount of Automatic steam trap Traps that use in steam heating engineering, steam power plant, due to operating condition inclement condition, valve opening and closing operation is day by day frequent, and the factor that causes valve to break down is many, and valve " run, drip, leak " phenomenon happens occasionally.Once steam drainage valve leaks, not only can cause equipment performance to decline, cause energy loss and economic loss, and can cause at short notice valve to damage, the safety of equipment is constituted a serious threat.At present, administering valve leak is the Important Action that steam heating power engineering corporation is energy-saving and cost-reducing, improve equipment safety in operation and stability.
The leakage of valve can be divided into and leaking outside and interior leakage.Compared with leaking outside, valves leakage is more difficult discovery generally, easily causes the serious accident of burst.At present, conventional valves leakage detection method mainly comprises infrared thermometry method, ultrasonic Detection Method, negative pressure wave method etc., but these methods all have it to use limitation.At present, apply that to leak diagnostic method in more steam drainage valve be temperature diagnosis in engineering field, its ultimate principle is the pipeline that is connected according to valve body and with the valve temperature changing regularity in operational process, judges whether valve occurs leakage.Steam drainage valve leak diagnostics can utilize the valve leak real time data that valve on-line monitoring is obtained on the one hand, quantitative Diagnosis leakiness, and prediction development trend, and take effectively maintenance and control measure, reduce maintenance cost and energy loss; The expansion to neighbouring device of consequence that valve leak fault causes be can effectively prevent on the other hand, security and economy that enterprise produces improved.
Disclosed document " China's ship repairing " in August, 2011 " certain type naval vessel valves leakage temperature difference detection method feasibility study " discloses a kind of temperature difference detection method detecting based on pipe surface temperature, and while leakage in this temperature difference detection method utilization detection high-temperature medium cutout late gate occurs, the pipe surface temperature difference value of the temperature sensor output of its front and back is determined the interior leakage situation of valve.But, when this temperature difference detection method is leaked in the Automatic steam trap Trap that is applied to steam drainage system, there is following problems:
1, trouble is installed, overhauled to temperature sensor.Because temperature sensor is in order to realize temperature detection, must be arranged on heat-insulation layer inside needs to destroy heat-insulation layer, affects the heat insulation effect of drain water piping.And because drain water piping temperature is higher and environment is severe, temperature sensor easily damages, because temperature sensor is arranged on heat-insulation layer inside, once temperature sensor is damaged, its service work meeting bothers very much, and heat-insulation layer, the maintenance that need to destroy drain water piping are wasted time and energy and inefficiency.
2, interior leakage diagnosis unit is in online detection for the scene of realizing, and due to the Automatic steam trap Trap environment very severe of living in of steam drainage system, interior leakage diagnosis unit is heated and causes its serviceable life shorter.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of temperature sensor is easy for installation, maintenance is quick, maintenance does not need to damage drain water piping heat-insulation layer, thermal insulation protection is effective, rugged surroundings adaptability is good, device for detecting leakage in the Automatic steam trap Trap based on pipe surface temperature detection before valve of long service life.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Device for detecting leakage in a kind of Automatic steam trap Trap detecting based on pipe surface temperature before valve, comprise interior leakage diagnosis unit and degree sensor, described interior leakage diagnosis unit comprises signal transmitting device, data acquisition card, microprocessor and touch display screen, described temperature sensor is successively by signal transmitting device, data acquisition card is connected with the input end of microprocessor, described microprocessor and touch display screen interconnect, in described Automatic steam trap Trap, device for detecting leakage also comprises detection case and copper installing plate, described interior leakage diagnosis unit is installed in detection case, described temperature sensor bonding is fixed on copper installing plate, one end of described copper installing plate is provided with and is arranged vertically and with the copper heat-conducting plate of arcwall face, the arcwall face of described copper heat-conducting plate contacts with the drain water piping outer wall of Automatic steam trap Trap to be detected.
Described detection case comprises pipe clamp, ceramic wafer and casing, described pipe clamp is sheathed on the drain water piping of Automatic steam trap Trap to be detected, the two ends of described pipe clamp are connected with ceramic wafer by web member respectively, described casing is located at the upside of ceramic wafer, and between described casing and ceramic wafer, be provided with thermal insulation board, described interior leakage diagnosis unit is installed in casing.
Between described pipe clamp and the drain water piping of Automatic steam trap Trap to be detected, be provided with heat insulating mattress, the side by drain water piping on described heat insulating mattress is provided with arc recess.
The top of described casing is provided with inclined-plane, and described touch display screen is installed on inclined-plane.
The outside of described copper installing plate is arranged with muff.
Described temperature sensor is connected with signal transmitting device by cable, and the openend of described muff is provided with the wire casing of arranging along the length direction of copper installing plate, and described cable is inserted in the wire casing of muff.
The utility model based on valve before pipe surface temperature detect Automatic steam trap Trap in device for detecting leakage there is following advantage:
1, the utility model comprises detection case and copper installing plate, interior leakage diagnosis unit is installed in detection case, temperature sensor bonding is fixed on copper installing plate, one end of copper installing plate is provided with and is arranged vertically and with the copper heat-conducting plate of arcwall face, the arcwall face of copper heat-conducting plate contacts with the drain water piping outer wall of Automatic steam trap Trap to be detected, because being provided with, one end of copper installing plate is arranged vertically and with the copper heat-conducting plate of arcwall face, therefore while installation, copper heat-conducting plate is positioned at the heat-insulation layer of drain water piping, temperature sensor and copper installing plate are positioned at outside the heat-insulation layer of drain water piping, the inspection of temperature sensor and replacing do not need to destroy the heat-insulation layer of drain water piping, in the time of work, utilize the good heat conductivility of copper installing plate and copper heat-conducting plate that the mode of the logical heat transfer of the pipe surface temperature of drain water piping is passed to temperature sensor, guarantee the accuracy that temperature sensor detects, have easy for installation, maintenance is quick, maintenance does not need to damage the advantage of drain water piping heat-insulation layer.
2, detection case of the present utility model further comprises pipe clamp, ceramic wafer and casing, described pipe clamp is sheathed on the drain water piping of Automatic steam trap Trap to be detected, the two ends of pipe clamp are connected with ceramic wafer by web member respectively, described casing is located at the upside of ceramic wafer, and be provided with thermal insulation board between described casing and ceramic wafer, interior leakage diagnosis unit is installed in casing, therefore on the one hand because pipe clamp is sheathed on the drain water piping of Automatic steam trap Trap to be detected, make observation of the present utility model and overhaul more convenient, on the other hand owing to being provided with glass fibre thermal insulation board between casing and ceramic wafer, temperature detecting unit is installed in casing, can prevent because the heat of the drain water piping of Automatic steam trap Trap to be detected causes temperature detecting unit in casing to cause burning because heat gathers, there is thermal insulation protection effective, rugged surroundings adaptability is good, the advantage of long service life.
3, between pipe clamp of the present utility model and the drain water piping of Automatic steam trap Trap to be detected, be further provided with heat insulating mattress, a side by drain water piping on heat insulating mattress is provided with arc recess, heat insulating mattress can further intercept for the heat between ceramic wafer and the drain water piping of Automatic steam trap Trap to be detected, and the heat that can further reduce the drain water piping of Automatic steam trap Trap to be detected affects the temperature of temperature detecting unit in casing.
4, casing of the present utility model top is further provided with inclined-plane, and touch display screen is installed on inclined-plane, therefore makes the touch display screen can oriented manipulation personnel, checks and operates convenient.
Accompanying drawing explanation
Fig. 1 is the side direction broken section structural representation of the utility model embodiment.
Fig. 2 is the A-A sectional structure schematic diagram in Fig. 1.
Fig. 3 is the B-B sectional structure schematic diagram in Fig. 1.
Fig. 4 is the interior framed structure schematic diagram that leaks diagnosis unit in the utility model embodiment.
Marginal data: 1, interior leakage diagnosis unit; 11, signal transmitting device; 12, data acquisition card; 13, microprocessor; 14, touch display screen; 2, temperature sensor; 21, cable; 3, detection case; 31, pipe clamp; 311, web member; 312, heat insulating mattress; 313, arc recess; 32, ceramic wafer; 33, casing; 331, thermal insulation board; 332, inclined-plane; 4, copper installing plate; 41, copper heat-conducting plate; 42, muff; 421, wire casing; 5, Automatic steam trap Trap to be detected; 51, drain water piping.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the present embodiment based on valve before pipe surface temperature detect Automatic steam trap Trap in device for detecting leakage comprise interior leakage diagnosis unit 1 and temperature sensor 2, interior leakage diagnosis unit 1 comprises signal transmitting device 11, data acquisition card 12, microprocessor 13 and touch display screen 14, temperature sensor 2 is successively by signal transmitting device 11, data acquisition card 12 is connected with the input end of microprocessor 13, microprocessor 13 and touch display screen 14 interconnect, in Automatic steam trap Trap, device for detecting leakage also comprises detection case 3 and copper installing plate 4, interior leakage diagnosis unit 1 is installed in detection case 3, temperature sensor 2 bondings are fixed on copper installing plate 4, one end of copper installing plate 4 is provided with and is arranged vertically and with the copper heat-conducting plate 41 of arcwall face, drain water piping 51 outer walls of the arcwall face of copper heat-conducting plate 41 and Automatic steam trap Trap 5 front ends to be detected (direction of arrow in Fig. 1 be MEDIA FLOW in drain water piping 51 to) contact.The present embodiment is arranged vertically because one end of copper installing plate 4 is provided with and with the copper heat-conducting plate 41 of arcwall face, therefore while installation, copper heat-conducting plate 41 is positioned at the heat-insulation layer of drain water piping 51, temperature sensor 2 and copper installing plate 4 are positioned at outside the heat-insulation layer of drain water piping 51, the inspection of temperature sensor 2 and replacing do not need to destroy the heat-insulation layer of drain water piping 51, in the time of work, utilize the good heat conductivility of copper installing plate 4 and copper heat-conducting plate 41, the mode that between copper heat-conducting plate 41 and drain water piping 51, the pipe surface temperature of drain water piping 51 is more effectively led to heat transfer by larger contact area passes to temperature sensor 2, guarantee the accuracy that temperature sensor 2 detects, have easy for installation, maintenance is quick, maintenance does not need the advantage of the heat-insulation layer that damages drain water piping 51.
As shown in Figure 3, detection case 3 comprises pipe clamp 31, ceramic wafer 32 and casing 33, pipe clamp 31 is sheathed on the drain water piping 51 of Automatic steam trap Trap 5 front ends to be detected, the two ends of pipe clamp 31 are connected with ceramic wafer 32 by web member 311 respectively, casing 33 is located at the upside of ceramic wafer 32, and between casing 33 and ceramic wafer 32, be provided with thermal insulation board 331, interior leakage diagnosis unit 1 is installed in casing 33.On the one hand because pipe clamp 31 is sheathed on the drain water piping 51 of Automatic steam trap Trap 5 to be detected; make the observation of the present embodiment and overhaul more convenient; on the other hand owing to being provided with thermal insulation board 331 between casing 33 and ceramic wafer 32; interior leakage diagnosis unit 1 is installed in casing 33; can prevent, because the heat of the drain water piping 51 of Automatic steam trap Trap 5 to be detected causes the interior leakage diagnosis unit 1 in casing 33 to cause burning because heat gathers, having advantages of that thermal insulation protection is effective, rugged surroundings adaptability is good, long service life.
As shown in Figure 3, between pipe clamp 31 and the drain water piping 51 of Automatic steam trap Trap to be detected 5 front ends, be provided with heat insulating mattress 312, the side by drain water piping 51 on heat insulating mattress 312 is provided with arc recess 313.Heat insulating mattress 312 can further intercept for the heat between ceramic wafer 32 and the drain water piping 51 of Automatic steam trap Trap to be detected 5, and the heat that can further reduce the drain water piping 51 of Automatic steam trap Trap 5 to be detected affects the temperature of the interior leakage diagnosis unit 1 in casing 33.
As shown in figures 1 and 3, the top of casing 33 is provided with inclined-plane 332, and touch display screen 14 is installed on inclined-plane 332, therefore makes the touch display screen 14 can be towards operating personnel, checks and operates convenient.
As depicted in figs. 1 and 2, the outside of copper installing plate 4 is arranged with muff 42.Because temperature sensor 2 need to gather the pipe surface temperature of drain water piping 51, if directly by exposed copper installing plate 4 in air, copper installing plate 4 is because meeting causes temperature to change to heat radiation in air, and copper installing plate 4 can not truly demonstrate pipe surface temperature herein; The present embodiment is by being arranged with muff 42 in the outside of copper installing plate 4, muff 42 can come isolated to copper installing plate 4 and external influence factor, reduce the temperature variation that copper installing plate 4 causes to heat radiation in air, can improve the accuracy that pipe surface temperature detects, and muff 42 is set in the outside of copper installing plate 4, while changing temperature sensor 2, muff 42 is taken off, operation is very easy.
As depicted in figs. 1 and 2, temperature sensor 2 is connected with signal transmitting device 11 by cable 21, and the openend of muff 42 is provided with the wire casing 421 of arranging along the length direction of copper installing plate 4, and cable 21 is inserted in the wire casing 421 of muff 42.The present embodiment, by the openend of muff 42, wire casing 421 being set, can effectively be protected cable 21, prevents that cable 21 is close to copper installing plate 4 and is heated, and facilitates the installation and removal of muff 42.
In the present embodiment, it is WS9050 thermal resistance temperature transmitter that signal transmitting device 11 adopts model, and its design parameter is as follows: input signal: the thermal resistance signal of PT100K: output signal: 0～20mA; Operating ambient temperature range :-20～55 ℃.It is the data collecting card of PCI-6239 that data acquisition card 12 adopts model, and its design parameter is as follows: the analog input of 8 passages; Resolution is 16bits; Sampling rate is 250ks/s.Microprocessor 13 is realized based on the CPU of Intel, and CPU frequency is 2.93GHz, saves as 2GB, hard disk is 500GB in it is supporting.Temperature sensor 2 is thermal sensitive ceramics sensor, specifically adopts PT100K type temperature sensor, and its design parameter is as follows: measurement range: 0～800 ℃; Measuring accuracy: 0.2～0.3.Because the structure of interior leakage diagnosis unit 1 is same as the prior art, it is also same as the prior art that it carries out the temperature difference detection method detecting based on pipe surface temperature, therefore do not repeat them here.In addition, the thermal insulation board 331 of the present embodiment, heat insulating mattress 312, muff 42 all adopt glass fibre to make, and also can adopt as required in addition other other heat-barrier material including asbestos, rock wool, silicate.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve, comprise interior leakage diagnosis unit (1) and temperature sensor (2), described interior leakage diagnosis unit (1) comprises signal transmitting device (11), data acquisition card (12), microprocessor (13) and touch display screen (14), described temperature sensor (2) is successively by signal transmitting device (11), data acquisition card (12) is connected with the input end of microprocessor (13), described microprocessor (13) and touch display screen (14) interconnect, it is characterized in that: in described Automatic steam trap Trap, device for detecting leakage also comprises detection case (3) and copper installing plate (4), described interior leakage diagnosis unit (1) is installed in detection case (3), described temperature sensor (2) bonding is fixed on copper installing plate (4), one end of described copper installing plate (4) is provided with and is arranged vertically and with the copper heat-conducting plate (41) of arcwall face, the arcwall face of described copper heat-conducting plate (41) contacts with drain water piping (51) outer wall of Automatic steam trap Trap to be detected (5) front end.
2. device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve according to claim 1, it is characterized in that: described detection case (3) comprises pipe clamp (31), ceramic wafer (32) and casing (33), described pipe clamp (31) is sheathed on the drain water piping (51) of Automatic steam trap Trap to be detected (5) front end, the two ends of described pipe clamp (31) are connected with ceramic wafer (32) by web member (311) respectively, described casing (33) is located at the upside of ceramic wafer (32), and be provided with thermal insulation board (331) between described casing (33) and ceramic wafer (32), described interior leakage diagnosis unit (1) is installed in casing (33).
3. device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve according to claim 2, it is characterized in that: between described pipe clamp (31) and the drain water piping (51) of Automatic steam trap Trap to be detected (5) front end, be provided with heat insulating mattress (312), the upper side by drain water piping (51) of described heat insulating mattress (312) is provided with arc recess (313).
4. device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve according to claim 3, is characterized in that: the top of described casing (33) is provided with inclined-plane (332), described touch display screen (14) is installed on inclined-plane (332).
5. according to device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve described in claim 1 or 2 or 3 or 4, it is characterized in that: the outside of described copper installing plate (4) is arranged with muff (42).
6. device for detecting leakage in the Automatic steam trap Trap detecting based on pipe surface temperature before valve according to claim 5, it is characterized in that: described temperature sensor (2) is connected with signal transmitting device (11) by cable (21), the openend of described muff (42) is provided with the wire casing (421) of arranging along the length direction of copper installing plate (4), and described cable (21) is inserted in the wire casing (421) of muff (42).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320882691.3U CN203672570U (en) | 2013-12-31 | 2013-12-31 | Device for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320882691.3U CN203672570U (en) | 2013-12-31 | 2013-12-31 | Device for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection |
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| CN203672570U true CN203672570U (en) | 2014-06-25 |
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| CN201320882691.3U Expired - Fee Related CN203672570U (en) | 2013-12-31 | 2013-12-31 | Device for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017808A (en) * | 2016-07-19 | 2016-10-12 | 湖南鸿远高压阀门有限公司 | Method and system for diagnosing inner leakage amount of drain valve |
| CN107063581A (en) * | 2017-06-01 | 2017-08-18 | 北京京能未来燃气热电有限公司 | Valves leakage detection means and detection method |
| CN110926796A (en) * | 2019-12-04 | 2020-03-27 | 福建省特种设备检验研究院 | Measuring device for discharge capacity and no-load steam leakage of drain valve hot condensed water and using method |
| CN113820121A (en) * | 2021-11-17 | 2021-12-21 | 常州艾肯智造科技有限公司 | Combined type steam trap detection device with quick mounting structure |
-
2013
- 2013-12-31 CN CN201320882691.3U patent/CN203672570U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017808A (en) * | 2016-07-19 | 2016-10-12 | 湖南鸿远高压阀门有限公司 | Method and system for diagnosing inner leakage amount of drain valve |
| CN106017808B (en) * | 2016-07-19 | 2018-07-31 | 湖南鸿远高压阀门有限公司 | The diagnostic method of leakage quantity in drain valve |
| CN107063581A (en) * | 2017-06-01 | 2017-08-18 | 北京京能未来燃气热电有限公司 | Valves leakage detection means and detection method |
| CN110926796A (en) * | 2019-12-04 | 2020-03-27 | 福建省特种设备检验研究院 | Measuring device for discharge capacity and no-load steam leakage of drain valve hot condensed water and using method |
| CN110926796B (en) * | 2019-12-04 | 2022-04-19 | 福建省特种设备检验研究院 | Use method of metering device for hot condensed water discharge and no-load steam leakage of drain valve |
| CN113820121A (en) * | 2021-11-17 | 2021-12-21 | 常州艾肯智造科技有限公司 | Combined type steam trap detection device with quick mounting structure |
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Granted publication date: 20140625 Termination date: 20141231 |
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