CN209355362U - A kind of superpressure duplicate protection system for heat supply heat distribution pipe network - Google Patents
A kind of superpressure duplicate protection system for heat supply heat distribution pipe network Download PDFInfo
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- CN209355362U CN209355362U CN201822141139.4U CN201822141139U CN209355362U CN 209355362 U CN209355362 U CN 209355362U CN 201822141139 U CN201822141139 U CN 201822141139U CN 209355362 U CN209355362 U CN 209355362U
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- superpressure
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Abstract
The utility model relates to a kind of superpressure duplicate protection systems for heat supply heat distribution pipe network, comprising: be sequentially connected in series the solenoid valve, pressure gauge and safety valve for being laid in same heat supply heat distribution pipe network；Control cabinet, power supply, relay and PID menu are equipped in it, it is equipped with first coil contact, the second coil contact, the first normally opened contact and the second normally opened contact in relay, a switch is equipped between first coil contact and the second coil contact, power supply is connected with first coil contact, solenoid valve；Second coil contact is connected with solenoid valve；PID menu is connected with pressure gauge, the first normally opened contact；Second normally opened contact of relay is grounded.A kind of superpressure duplicate protection system for heat supply heat distribution pipe network disclosed by the utility model has the advantages that 1, safety coefficient height；2, the frequency for reducing maintenance replacement, reduces workload.
Description
Technical field
The utility model relates to a kind of superpressure duplicate protection systems for heat supply heat distribution pipe network.
Background technique
Heat distribution pipe network is to lead to building consumer heat inlet from heat source from boiler room, direct combustion computer room, heat supply center grade
Heat supply pipeline.Multiple heat supply pipelines form heat distribution pipe network.
Overpressure protection apparatus is a kind of key equipment, is widely used in the water systems such as heat supply heat distribution pipe network.Work as compression
When pressure in system is more than specified value, overpressure protection apparatus will play its effect and carry out pressure release, transport pipe-line system safely
Row, prevents the generation of accident.Overpressure protection apparatus work it is reliable whether be directly related to system run safety, so should
To pay attention to.
The solenoid valve or safety valve that overpressure protection apparatus used at present is mainly single use, but both valves are all
In place of Shortcomings: 1, solenoid valve is actively to protect, if temporary fault occur in control system or valve when not finding, will lose guarantor
Protect effect.2, safety valve is mechanical protection, but relief valve device is after superpressure sluicing, it may appear that the case where being not closed completely makes
It obtains safety valve declines even to disappear, while will increase the maintenance of safety valve, replacement workload.
Utility model content
Purpose of utility model: the utility model makes improvement for the above-mentioned problems of the prior art, i.e., this is practical new
Type discloses a kind of superpressure duplicate protection system for heat supply heat distribution pipe network.
A kind of technical solution: superpressure duplicate protection system for heat supply heat distribution pipe network, comprising:
It is sequentially connected in series the solenoid valve, pressure gauge and safety valve for being laid in same heat supply heat distribution pipe network；
Control cabinet, it is interior to be equipped with power supply, relay and PID menu, first coil contact, the second line are equipped in relay
Contact, the first normally opened contact and the second normally opened contact are enclosed, a switch is equipped between first coil contact and the second coil contact,
In:
The cathode of power supply is connected by cable with the first coil contact of relay；
The anode of power supply is connected by cable with solenoid valve；
Second coil contact of relay is connected by cable with solenoid valve；
One end of PID menu is connected with pressure gauge, the first normally opened contact phase of the other end and relay of PID menu
Even；
Second normally opened contact of relay is grounded.
Further, the return water of secondary network heating system is installed on for the superpressure duplicate protection system of heat supply heat distribution pipe network
Pipeline water circulating pump inlet.
Further, drain is also set, the outlet end of safety valve is communicated by pipeline with the drain.
The utility model has the advantages that a kind of superpressure duplicate protection system for heat supply heat distribution pipe network disclosed by the invention has with following
Beneficial effect:
1, safety coefficient is high --- and solenoid valve can accurately, reasonably judge the pressure of heat supply heat distribution pipe network under normal circumstances
Power；When of short duration failure occurs in solenoid valve, safety valve plays a role；
2, safety valve is to effectively reduce in the state infrequently to work only with after pressure release when safety valve in system
The case where leading to that it is not closed completely and influencing working effect, reduces the frequency of maintenance replacement, reduces workload.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the superpressure duplicate protection system for heat supply heat distribution pipe network disclosed by the utility model
Figure；
Wherein:
1- pressure gauge 2- solenoid valve
3- safety valve 4- relay
5- first coil contact 6- drain
7- power supply the second coil of 9- contact
10- control cabinet
13- the first normally opened contact the second normally opened contact of 14-
Specific embodiment:
Specific embodiment of the present utility model is described in detail below.
As shown in Figure 1, a kind of superpressure duplicate protection system for heat supply heat distribution pipe network, comprising:
It is sequentially connected in series the solenoid valve 2, pressure gauge 1 and safety valve 3 for being laid in same heat supply heat distribution pipe network；
Control cabinet 10, in be equipped with power supply 7, relay 4 and PID menu, be equipped in relay 4 first coil contact 5,
Second coil contact 9, the first normally opened contact 13 and the second normally opened contact 14, between first coil contact 5 and the second coil contact 9
Equipped with a switch, in which:
The cathode of power supply 7 is connected by cable with the first coil contact 5 of relay 4；
The anode of power supply 7 is connected by cable with solenoid valve 2；
Second coil contact 9 of relay 4 is connected by cable with solenoid valve 2；
One end of PID menu is connected with pressure gauge 1, the other end of PID menu and the first normally opened contact of relay 4
13 are connected；
Second normally opened contact 14 of relay 4 is grounded.
Further, the return water of secondary network heating system is installed on for the superpressure duplicate protection system of heat supply heat distribution pipe network
Pipeline water circulating pump inlet.
Further, drain 6 is also set, the outlet end of safety valve 3 is communicated by pipeline with the drain 6.
To be further described through the technical solution of the utility model, by taking six floor residential housings as an example, building storey height presses 18
Rice calculates, and builds ground heat supply thermal substation one, steady of system press is calculated according to 0.23MPa after considering certain surplus.Then at this
In superpressure double protecting device, giving 3 release pressure P2 of safety valve is 0.31MPa, and giving 2 vent pressure P1 of solenoid valve is
0.26MPa。
Working principle:
(1) under normal circumstances, first coil contact 5, the second coil contact 9 are normally opens, i.e., solenoid valve 2 is not protected
Nurse makees, and when the pressure of system has met or exceeded the pressure P1 value for giving solenoid valve 2, PID menu provides signal at once
D0 is instructed, first coil contact 5 in relay 4, closing the switch, being powered at the second coil contact 9, solenoid valve are received after signal
2 carry out pressure release, protect system；When system pressure, which is returned, drops to operating pressure or slightly below operating pressure, menu instruction is taken
Disappear, the switch at first coil contact 5, the second coil contact 9 restores normally open.It realizes according to such endless form to system
The protection of pressure-bearing.
(2) if in operational process, there is situations such as damage of solenoid valve 2 or electric-controlled system fault, so that 2 pressure release of solenoid valve
Protect it is ineffective, then when system pressure meets or exceeds the pressure P2 value for giving safety valve 3,3 take-off of safety valve, carry out most
Protection eventually.
The embodiments of the present invention is elaborated above.But the utility model is not limited to above-mentioned implementation
Mode, technical field those of ordinary skill within the scope of knowledge, the utility model ancestor can also not departed from
It is made a variety of changes under the premise of purport.
Claims (3)
1. a kind of superpressure duplicate protection system for heat supply heat distribution pipe network characterized by comprising
It is sequentially connected in series the solenoid valve, pressure gauge and safety valve for being laid in same heat supply heat distribution pipe network；
Control cabinet, it is interior to be equipped with power supply, relay and PID menu, first coil contact is equipped in relay, the second coil touches
Point, the first normally opened contact and the second normally opened contact are equipped with a switch between first coil contact and the second coil contact, in which:
The cathode of power supply is connected by cable with the first coil contact of relay；
The anode of power supply is connected by cable with solenoid valve；
Second coil contact of relay is connected by cable with solenoid valve；
One end of PID menu is connected with pressure gauge, and the other end of PID menu is connected with the first normally opened contact of relay；
Second normally opened contact of relay is grounded.
2. a kind of superpressure duplicate protection system for heat supply heat distribution pipe network according to claim 1, which is characterized in that use
The water return pipeline water circulating pump inlet of secondary network heating system is installed in the superpressure duplicate protection system of heat supply heat distribution pipe network.
3. a kind of superpressure duplicate protection system for heat supply heat distribution pipe network according to claim 1, which is characterized in that also
If drain, the outlet end of safety valve is communicated by pipeline with the drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141139.4U CN209355362U (en) | 2018-12-20 | 2018-12-20 | A kind of superpressure duplicate protection system for heat supply heat distribution pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141139.4U CN209355362U (en) | 2018-12-20 | 2018-12-20 | A kind of superpressure duplicate protection system for heat supply heat distribution pipe network |
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| Publication Number | Publication Date |
|---|---|
| CN209355362U true CN209355362U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822141139.4U Active CN209355362U (en) | 2018-12-20 | 2018-12-20 | A kind of superpressure duplicate protection system for heat supply heat distribution pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075749A (en) * | 2019-12-27 | 2020-04-28 | 湖南泛航智能装备有限公司 | Intelligent anti-surge device of ultrahigh-speed centrifugal fan |
-
2018
- 2018-12-20 CN CN201822141139.4U patent/CN209355362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075749A (en) * | 2019-12-27 | 2020-04-28 | 湖南泛航智能装备有限公司 | Intelligent anti-surge device of ultrahigh-speed centrifugal fan |
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