A high-precision temperature-controlled chiller unit for industrial production

Abstract

This utility model relates to a high-precision temperature-controlled chiller unit for industrial production, belonging to the technical field of chiller units. The high-precision temperature-controlled chiller unit for industrial production includes: a connecting mechanism comprising a pipe joint and a threaded joint; one end of the threaded joint is embedded with a first sealing ring in contact with the pipe joint; a threaded sleeve, threadedly connected to the threaded joint, is slidably connected to the surface of the pipe joint; and a vent hole is provided on the side end of the threaded sleeve. When the first sealing ring fails due to aging, the second sealing rings on both sides can still maintain a short-term sealing barrier, effectively delaying media leakage. Simultaneously, a leakage detection component monitors the sealing status of the first sealing ring in real time through the vent hole, and immediately alarms when the pressure alarm is triggered by spring deformation, forming a dual protection mechanism of "active protection + passive monitoring," significantly reducing the risk of sudden leakage.

Description

Technical Field

[0001] This utility model relates to the field of chiller technology, and in particular to a high-precision temperature-controlled chiller for industrial production. Background Technology

[0002] High-precision temperature-controlled chiller units are professional refrigeration equipment that use variable frequency compressors and intelligent control systems to meet the stringent temperature-sensitive requirements of industrial and scientific research fields. They feature rapid response, stable operation, and intelligent management.

[0003] However, during long-term operation, the unit's piping seals are continuously exposed to harsh conditions such as high temperature, high pressure, refrigerant corrosion, and mechanical vibration, which can easily lead to problems such as hardening, cracking, or deformation of rubber and other sealing materials. Currently, the industry proposes to reduce the risk of seal leakage through regular maintenance and leak detection, and this problem urgently needs a more effective solution. Utility Model Content

[0004] Therefore, it is necessary to provide a high-precision temperature-controlled chiller unit for industrial production to address the problem that the seals of high-precision temperature-controlled chillers are prone to aging and damage under harsh operating conditions, but the industry usually relies on regular maintenance and leak detection to deal with this, lacking a more effective solution.

[0005] A high-precision temperature-controlled chiller unit for industrial production includes: a connection mechanism, the connection mechanism including a pipe joint and a threaded joint, one end of the threaded joint is embedded with a first sealing ring that contacts the pipe joint, the surface of the pipe joint is slidably connected with a threaded sleeve that is threadedly connected to the threaded joint, the side end of the threaded sleeve is provided with a vent hole, and the surface of the threaded sleeve is equipped with a sealing detection mechanism that communicates with the vent hole.

[0006] In one embodiment, the sealing detection mechanism includes two second sealing rings, which are respectively embedded in the inner sides of the two openings of the threaded sleeve, and respectively contact the pipe joint and the threaded joint. The two second sealing rings are respectively disposed on both sides of the first sealing ring.

[0007] In one embodiment, the sealing detection mechanism further includes a leakage detection component, which includes a circular tube fixedly connected to the side end of the threaded sleeve, a piston slidably connected inside the circular tube, and a pressure alarm embedded in the opening of the circular tube.

[0008] In one embodiment, the circular tube is a transparent PTFE material component.

[0009] In one embodiment, a spring is provided inside the circular tube, with the two ends of the spring contacting the circular tube and the piston, respectively.

[0010] In one embodiment, the detection end of the pressure alarm is located inside the spring.

[0011] In one embodiment, one end of the piston has a positioning ring groove, and one end of the spring extends through the interior of the positioning ring groove.

[0012] In one embodiment, an air bladder communicating with an air guide hole is fixedly connected inside the circular tube, and one end of the air bladder is in contact with the piston.

[0013] In one embodiment, the other end of the piston has a circular groove, and one end of the airbag extends into the interior of the circular groove.

[0014] Beneficial effects

[0015] 1. In the high-precision temperature-controlled chiller unit used in industrial production, when the first sealing ring fails due to aging, the second sealing rings on both sides can still maintain a short-term sealing barrier, effectively delaying media leakage. At the same time, the leakage detection component monitors the sealing status of the first sealing ring in real time through the air vent, and immediately alarms when the spring deformation triggers the pressure alarm, forming a dual protection mechanism of "active protection + passive monitoring", which greatly reduces the risk of sudden leakage.

[0016] 2. The transparent PTFE tube allows direct observation of piston displacement and airbag expansion, while the linkage mechanism between spring compression and pressure alarm enables quantitative alarm, avoiding the lag of traditional manual detection and ensuring detection reliability through mechanical structure. It is especially suitable for real-time health monitoring of seals under high temperature and high pressure conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connecting mechanism in this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the connecting mechanism in this utility model;

[0021] Figure 4 This is a schematic diagram of the leakage detection component in this utility model;

[0022] Figure 5 This is an exploded view of the leakage detection component in this utility model.

[0023] Figure label:

[0024] 100. Connecting mechanism; 110. Pipe fitting; 120. Threaded fitting; 130. First sealing ring; 140. Threaded sleeve; 141. Air vent; 150. Sealing detection mechanism; 151. Second sealing ring; 152. Leakage detection assembly; 1521. Round tube; 1522. Piston; 1523. Pressure alarm; 1524. Spring; 1525. Positioning ring groove; 1526. Airbag; 1527. Round groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined Figure 1 - Figure 5 This invention describes a high-precision temperature-controlled chiller unit for industrial production.

[0027] In one embodiment, a high-precision temperature-controlled chiller unit for industrial production includes: a connecting mechanism 100, the connecting mechanism 100 including a pipe joint 110 and a threaded joint 120, one end of the threaded joint 120 is embedded with a first sealing ring 130 that contacts the pipe joint 110, the surface of the pipe joint 110 is slidably connected with a threaded sleeve 140 that is threadedly connected to the threaded joint 120, the side end of the threaded sleeve 140 is provided with a vent hole 141, and the surface of the threaded sleeve 140 is equipped with a sealing detection mechanism 150 that communicates with the vent hole 141;

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the sealing detection mechanism 150 includes two second sealing rings 151. The two second sealing rings 151 are respectively embedded in the inner side of the two openings of the threaded sleeve 140. The two second sealing rings 151 are respectively in contact with the pipe joint 110 and the threaded joint 120. The two second sealing rings 151 are respectively disposed on both sides of the first sealing ring 130.

[0029] like Figure 3 , Figure 4and Figure 5 As shown, the sealing detection mechanism 150 further includes a leakage detection component 152. The leakage detection component 152 includes a circular tube 1521 fixedly connected to the side end of the threaded sleeve 140. A piston 1522 is slidably connected inside the circular tube 1521. A pressure alarm 1523 is embedded in the opening of the circular tube 1521. The circular tube 1521 is a transparent PTFE material component. A spring 1524 is provided inside the circular tube 1521. The two ends of the spring 1524 are respectively connected to the circular tube 1521 and the piston 1522. The detection end of the pressure alarm 1523 is located inside the spring 1524; one end of the piston 1522 is provided with a positioning ring groove 1525, and one end of the spring 1524 passes through the interior of the positioning ring groove 1525; an air bladder 1526 communicating with the air guide hole 141 is fixedly connected inside the round tube 1521, and one end of the air bladder 1526 is in contact with the piston 1522; the other end of the piston 1522 is provided with a round groove 1527, and one end of the air bladder 1526 passes through the interior of the round groove 1527.

[0030] In this embodiment, when the user needs to connect two opposite pipes using the connecting mechanism 100, two second sealing rings 151 are embedded inside the openings at both ends of the threaded sleeve 140 to ensure that they are in close contact with the outer surfaces of the pipe joint 110 and the threaded joint 120, respectively; the threaded sleeve 140 is slid into the surface of the pipe joint 110 so that its internal thread is aligned with the external thread of the threaded joint 120; the pipe joint 110 and the threaded joint 120 are welded and locked at the opposite ends where the two pipes need to be connected; the first sealing ring 130 is embedded into the designated end of the threaded joint 120 to ensure that it fits against the contact surface of the subsequently installed pipe joint 110; the end of the pipe joint 110 is aligned with the end of the threaded joint 120 with the first sealing ring 130, keeping their axes coincident, and the threaded sleeve 140 is rotated to gradually thread it into the threaded joint 120. During the process, the first sealing ring 130 is deformed by pressure to achieve a primary seal, and it is confirmed that the two second sealing rings 151 are located on both sides of the first sealing ring 130, forming a double sealing barrier.

[0031] Working Principle: The detection process of the sealing detection mechanism 150 is as follows: In the initial state, the first sealing ring 130 forms a main seal between the threaded joint 120 and the pipe joint 110, while the two second sealing rings 151 provide auxiliary seals on both sides of the threaded sleeve 140. If the main seal fails, the leaking gas enters the threaded sleeve 140 through the gap of the first sealing ring 130 and the air guide hole 141, and is conducted to the round tube 1521 of the transparent PTFE material component, pushing the airbag 1526 to inflate. The airbag 1526 then pushes the piston 1522 to move, causing it to compress the spring 1524 through the positioning ring groove 1525. When the deformation of the spring 1524 reaches the threshold, the detection end of the pressure alarm 1523 triggers a leakage alarm. At the same time, thanks to the transparency of the round tube 1521, the displacement of the piston 1522, the expansion of the airbag 1526, and the compression state of the spring 1524 can be observed directly, achieving dual monitoring. This design can maintain a short-term seal even when the second sealing ring 151 has not failed, providing a buffer time for maintenance.

[0032] Additional information: Taking the Trane CVHG series variable frequency centrifugal high-precision chiller as an example, this equipment is widely used in data centers, pharmaceuticals, precision manufacturing, and other fields. Its core structure includes a variable frequency centrifugal compressor, a falling film evaporator, a condenser, an electronic expansion valve, a variable frequency drive, and an intelligent control system. The variable frequency centrifugal compressor is driven by a permanent magnet synchronous motor, achieving gearless transmission, improving operating efficiency and reducing energy consumption. The falling film evaporator uses refrigerant to evaporate through a falling film outside the tube bundle, significantly reducing the amount of refrigerant required. The condenser adopts a high-efficiency microchannel design, with options for water-cooled shell-and-tube or plate heat exchanger structures, enhancing its anti-fouling capabilities. The variable frequency drive adjusts the compressor speed in real time to match load changes, and the intelligent control system integrates a Trane Tracer controller.

[0033] Its working principle is based on a vapor compression refrigeration cycle, with variable frequency control adjusting the cooling output: In the compression stage, low-temperature, low-pressure gaseous refrigerant such as R134a is processed into a high-temperature, high-pressure gas by the centrifugal compressor; in the condensation stage, the high-temperature refrigerant exchanges heat with cooling water in the condenser, transforming into a high-pressure liquid; in the throttling stage, the electronic expansion valve precisely reduces the pressure, forming a low-temperature, low-pressure two-phase flow; in the evaporation stage, the refrigerant absorbs heat from the chilled water in the evaporator and vaporizes, stabilizing the water temperature to the set value. Core technological innovations include the variable frequency centrifugal compressor avoiding temperature fluctuations through speed adjustment, and falling film evaporation technology ensuring uniform refrigerant coverage of the heat exchange tubes, improving overall efficiency.

[0034] Taking a pharmaceutical plant as an example, the workflow is as follows: During startup, the control system detects the return water temperature, calculates the cooling demand, and then the variable frequency drive gradually increases the speed to the load point; during the pressure stabilization cooling stage, the refrigerant circulation path is compressor → condenser → electronic expansion valve → evaporator → compressor, and the electronic expansion valve adjusts the opening degree every preset number of seconds to maintain a constant evaporation temperature; the protection mechanism monitors the risk of leakage through the refrigerant pressure sensor and triggers an alarm, and the standby compressor automatically switches in to provide redundancy protection.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision temperature-controlled water chiller for industrial production, comprising: A connecting mechanism (100) includes a pipe joint (110) and a threaded joint (120). One end of the threaded joint (120) is fitted with a first sealing ring (130) that contacts the pipe joint (110). A threaded sleeve (140) that is threadedly connected to the threaded joint (120) is slidably connected to the surface of the pipe joint (110). The threaded sleeve (140) is characterized in that a vent hole (141) is provided on the side end of the threaded sleeve (140), and a sealing detection mechanism (150) that communicates with the vent hole (141) is installed on the surface of the threaded sleeve (140). The sealing detection mechanism (150) includes two second sealing rings (151). The two second sealing rings (151) are respectively embedded in the inner side of the two openings of the threaded sleeve (140). The two second sealing rings (151) are respectively in contact with the pipe joint (110) and the threaded joint (120). The two second sealing rings (151) are respectively disposed on both sides of the first sealing ring (130).

2. The high-precision temperature-controlled chiller for industrial production according to claim 1, characterized in that, The sealing detection mechanism (150) further includes a leakage detection component (152), which includes a round tube (1521) fixedly connected to the side end of the threaded sleeve (140), a piston (1522) slidably connected inside the round tube (1521), and a pressure alarm (1523) embedded in the opening of the round tube (1521).

3. The high-precision temperature-controlled chiller unit for industrial production according to claim 2, characterized in that, The circular tube (1521) is a transparent PTFE material component.

4. The high-precision temperature-controlled chiller for industrial production according to claim 2, characterized in that, A spring (1524) is installed inside the round tube (1521), and the two ends of the spring (1524) are in contact with the round tube (1521) and the piston (1522) respectively.

5. The high-precision temperature-controlled chiller for industrial production according to claim 4, characterized in that, The detection end of the pressure alarm (1523) is located inside the spring (1524).

6. The high-precision temperature-controlled chiller for industrial production according to claim 4, characterized in that, One end of the piston (1522) is provided with a positioning ring groove (1525), and one end of the spring (1524) passes through the interior of the positioning ring groove (1525).

7. The high-precision temperature-controlled chiller for industrial production according to claim 2, characterized in that, An air bladder (1526) communicating with an air guide hole (141) is fixedly connected inside the round tube (1521), and one end of the air bladder (1526) is in contact with the piston (1522).

8. The high-precision temperature-controlled chiller for industrial production according to claim 7, characterized in that, The piston (1522) has a circular groove (1527) at the other end, and one end of the airbag (1526) extends into the interior of the circular groove (1527).

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