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CN-121558205-B - Temperature sensor for monitoring operation state of pump station

CN121558205BCN 121558205 BCN121558205 BCN 121558205BCN-121558205-B

Abstract

The invention discloses a temperature sensor for monitoring the operation state of a pump station, which relates to the technical field of monitoring the temperature of a pump station unit and comprises an outer sleeve, wherein a ceramic tube is arranged in the outer sleeve, a first platinum wire and a second platinum wire are respectively wound on the outer wall of the circumference of the ceramic tube, one end of the first platinum wire is welded with a shorting wire, the first platinum wire and the second platinum wire form a short circuit through the shorting wire, one ends of the first platinum wire and the second platinum wire are welded with metal sheets, one side of each metal sheet is welded with a lead wire, the bottom of the outer sleeve is fixedly connected with a wire sheath for protecting the lead wire, and the inner part of the outer sleeve is filled with magnesia powder for insulating and conducting heat to electromagnetic signals. The invention realizes real-time and accurate monitoring of the temperature of the air cooler, provides reliable guarantee for the safe operation of the pump station unit, and avoids unit faults or unnecessary shutdown caused by temperature abnormality.

Inventors

  • MIAO XU
  • SUN YU
  • ZHONG LU
  • ZHANG YANG
  • HAN HONGYANG
  • LIU HAIYAN

Assignees

  • 江苏省骆运水利工程管理处

Dates

Publication Date
20260512
Application Date
20260123

Claims (7)

  1. 1. The temperature sensor for monitoring the operation state of the pump station comprises an outer sleeve (1), and is characterized in that a ceramic tube (10) is arranged inside the outer sleeve (1), a first platinum wire (13) and a second platinum wire (14) are respectively wound on the circumferential outer wall of the ceramic tube (10), a shorting wire (12) is welded at one end of the first platinum wire (13), and the first platinum wire (13) and the second platinum wire (14) form a short circuit through the shorting wire (12); One ends of the first platinum wire (13) and the second platinum wire (14) are welded with metal sheets (11), one side of each metal sheet (11) is welded with a lead (9), and the bottom of the outer sleeve (1) is fixedly connected with a lead sheath (2) for protecting the lead (9); The inside of outer tube (1) is filled with and is used for carrying out insulating heat conduction's magnesium oxide powder (8), the inside of outer tube (1) is provided with sealing layer (7) that are used for guaranteeing inside sealedly, first platinum wire (13) with second platinum wire (14) are all in spiral winding and establish on the circumference outer wall of ceramic tube (10), first platinum wire (13) with second platinum wire (14) are followed parallel winding of axis direction of ceramic tube (10) and space are staggered each other, the pitch of first platinum wire (13) and second platinum wire (14) is the distribution form that both ends are big, the centre is little, cavity (16) have been seted up to the inside of ceramic tube (10), cavity (16) are middle part expanded ladder-like structure, and its internal diameter is from both ends along middle part direction increase gradually.
  2. 2. A temperature sensor for monitoring the operation state of a pump station according to claim 1, wherein two groups of fixing grooves (15) are formed in the circumferential outer wall of the ceramic tube (10), the first platinum wire (13) is correspondingly clamped in one group of fixing grooves (15), the second platinum wire (14) is correspondingly clamped in the other group of fixing grooves (15), each group of fixing grooves (15) is spiral in shape matched with the corresponding platinum wire, and each group of fixing grooves (15) form a semi-surrounding limiting structure for the corresponding platinum wire.
  3. 3. A temperature sensor for monitoring the operation of a pump station according to claim 2, characterized in that the outer sleeve (1) comprises a round tube portion (101) and an end portion (102), the end portion (102) being bullet-shaped, the tip of the end portion (102) facing away from the side of the wire jacket (2).
  4. 4. A temperature sensor for monitoring the operation state of a pump station according to claim 3, wherein the circumferential outer wall of the circular tube part (101) is provided with diversion trenches (5) which are equidistantly and circularly distributed, the cross section of each diversion trench (5) is arc-shaped, and the diversion trenches (5) extend along the axial direction of the circular tube part (101).
  5. 5. A temperature sensor for monitoring the operation state of a pump station according to claim 4, characterized in that the circumferential outer wall of the end portion (102) is integrally formed with axial fins (6), the axial fins (6) are distributed in a circular shape at equal distance on the circumferential outer wall of the end portion (102), and the axial fins (6) extend in the axial direction of the end portion (102).
  6. 6. A temperature sensor for monitoring the operation state of a pump station according to claim 5, characterized in that the axial fins (6) are located at the same level as the flow guiding groove (5), and the extension direction of the axial fins (6) is collinear with the extension direction of the flow guiding groove (5).
  7. 7. A temperature sensor for monitoring the operation state of a pump station according to claim 6, wherein a ground wire (3) is welded on the outer wall of the bottom of the outer sleeve (1), one end of the ground wire (3) is electrically connected with the outer sleeve (1), and one end of the ground wire (3) away from the outer sleeve (1) is electrically connected with an external grounding end.

Description

Temperature sensor for monitoring operation state of pump station Technical Field The invention relates to the technical field of pump station unit temperature monitoring, in particular to a temperature sensor for monitoring the operation state of a pump station. Background The pump station is used as a core infrastructure in water-regulating engineering, and the stable operation of the unit is directly related to the smooth propulsion of the water-regulating task. In the daily start-up water-regulating operation process of the pump station unit, the equipment aging problem is gradually highlighted due to longer service life of part of equipment, and various operation fault risks are obviously increased. The air cooler is high in temperature, is one of common fault hidden hazards in the operation of a pump station unit, when the temperature of the air cooler is abnormally increased, the temperature of a motor winding and the temperature of a bearing are directly increased synchronously, the lubricating performance of lubricating oil is further reduced, the vibration amplitude in the operation process of the unit is increased, the energy consumption is obviously increased, the insulation performance of equipment is accelerated to be deteriorated in a long-term state, the abrasion and aging speed of mechanical parts are obviously increased, a protection alarm system of the unit is triggered when the equipment is seriously, even the unit is tripped and stopped, the safe and stable execution of a water transferring task is influenced, a series of linkage losses such as equipment damage, the increase of maintenance cost and the like are possibly caused, and therefore the real-time monitoring of the internal temperature of the air cooler through a temperature sensor is particularly important. At present, because the humidity in a pump station is large, the power of a pump station unit is extremely large, the power of a common single machine can reach about 7000kW, the interference of an electromagnetic field is too strong, the traditional temperature sensor is poor in anti-interference capability, temperature measurement signal distortion and severe in data fluctuation are easily caused, the real temperature change in an air cooler cannot be accurately captured, the normal temperature is misjudged to be abnormally high, unnecessary unit shutdown is caused, or the response to the actually existing temperature exceeding problem is delayed, and the fault risk cannot be timely early warned. In addition, the shell of traditional temperature sensor is mostly smooth cylindrical structure, under the inside high-speed air current environment of air cooler, the surface easily forms the air current stagnant water district, and the heat exchange is insufficient, leads to the temperature measurement response speed slow, has further reduced temperature monitoring's timeliness. Accordingly, there is a need for a temperature sensor for pump station operating condition monitoring that addresses the above-described issues. Disclosure of Invention Aiming at the problems in the related art, the invention provides a temperature sensor for monitoring the operation state of a pump station, so as to overcome the technical problems in the prior related art. The technical scheme of the invention is realized as follows: The temperature sensor for monitoring the operation state of the pump station comprises an outer sleeve, wherein a ceramic tube is arranged in the outer sleeve, a first platinum wire and a second platinum wire are respectively wound on the outer wall of the circumference of the ceramic tube, a shorting wire is welded at one end of the first platinum wire, and the first platinum wire and the second platinum wire form a short circuit through the shorting wire; A metal sheet is welded at one end of each of the first platinum wire and the second platinum wire, a lead is welded at one side of each metal sheet, and a wire sheath for protecting the lead is fixedly connected to the bottom of the outer sleeve; The inside of outer tube is filled with and is used for carrying out insulating heat conduction's magnesium oxide powder to electromagnetic signal, the inside of outer tube is provided with the sealing layer that is used for guaranteeing inside sealedly. Preferably, the first platinum wire and the second platinum wire are spirally wound on the outer circumferential wall of the ceramic tube, and the first platinum wire and the second platinum wire are wound in parallel along the axial direction of the ceramic tube and are spatially staggered from each other. Preferably, the pitches of the first platinum wire and the second platinum wire are distributed in a mode of large two ends and small middle. Preferably, two groups of fixing grooves are formed in the circumferential outer wall of the ceramic tube, the first platinum wire is correspondingly clamped in one group of fixing grooves, the second platinum wire is correspondingly