Water pressure testing device of marine instrument

Abstract

The utility model discloses a water pressure testing device of a marine instrument, which comprises a mounting bracket, an upper cylinder body, a lower cylinder body and a plurality of adjusting cylinder bodies, the upper cylinder body and the lower cylinder body are detachably and fixedly connected with the mounting bracket, the top of the upper cylinder body is provided with a pressure detection mechanism, one side of the upper cylinder body is provided with an upper connecting pipe, and the other side of the upper cylinder body is provided with a lower connecting pipe. A thread is arranged on the inner wall of the lower port of the upper cylinder body; a lower connecting pipe is arranged on one side of the lower barrel, a water inlet is formed in the bottom of the lower barrel, and threads are arranged on the outer wall of an upper end opening of the lower barrel; each adjusting cylinder structurally comprises an adjusting cylinder body, threads are arranged on the outer wall of an upper connecting section at the upper end of the adjusting cylinder body, and threads are arranged on the inner wall of a lower port of the adjusting cylinder body. The lower end opening of the upper barrel body and the upper end opening of the lower barrel body can be sealed and fixed through threads; any adjusting cylinder can be fixed to the upper cylinder and the lower cylinder in a threaded sealing mode. The utility model has the advantage of being suitable for the water pressure test of water level gauges and water level controllers of various sizes and models.

Description

Technical Field

[0001] This utility model relates to the field of marine boiler technology, specifically to a water pressure testing device for marine instruments. Background Technology

[0002] Boilers require water level gauges or controls. Water level gauges monitor the water level in the boiler in real time, while water level controllers primarily control and regulate the water level. After manufacturing, water level controllers typically undergo a water pressure test to ensure they pass before being delivered to the user. Even after installation at the shipyard, purchased water level gauges sometimes leak. Therefore, to ensure reliable operation, water pressure testing is also necessary before delivery to the customer for installation.

[0003] To ensure the safe and reliable operation of marine boilers, the applicant developed a water pressure testing device for marine instruments. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a water pressure testing device for marine instruments, which has a simple structure and can be applied to water pressure testing of marine instruments of various sizes and models.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a water pressure testing device for marine instruments, including: a mounting bracket, an upper cylinder, a lower cylinder, and several adjusting cylinders of different lengths. The upper cylinder and the lower cylinder are detachably and fixedly connected to the mounting bracket. A pressure detection mechanism is provided at the top of the upper cylinder. An upper connecting pipe for connecting to the steam side connecting pipe of the marine instrument is provided on one side of the upper cylinder. Threads are provided on the inner wall of the lower port of the upper cylinder. A lower connecting pipe for connecting to the water side connecting pipe of the marine instrument is provided on one side of the lower cylinder. A water inlet for connecting to a pump is provided at the bottom of the lower cylinder. The outer wall of the upper port of the lower cylinder... The upper part is provided with threads; the structure of each regulating cylinder includes: a regulating cylinder body, an upper connecting section at the upper end of the regulating cylinder body, threads on the outer wall of the upper connecting section, and threads on the inner wall of the lower port of the regulating cylinder body; the lower port of the upper cylinder body and the upper port of the lower cylinder body can be threadedly sealed and fixed, thereby connecting the upper and lower cylinder bodies; the upper connecting section of any regulating cylinder body can be threadedly sealed and fixed to the lower port of the upper cylinder body, and the lower port of its regulating cylinder body can be threadedly sealed and fixed to the upper port of the lower cylinder body, thereby connecting the regulating cylinder body with the upper and lower cylinder bodies; the marine instruments include a water level gauge and a water level controller.

[0006] Furthermore, in the aforementioned marine instrument water pressure testing device, the pressure detection mechanism includes a pressure gauge, which is connected to the top of the upper cylinder via a pressure buffer tube.

[0007] Furthermore, in the aforementioned marine instrument water pressure testing device, the pressure buffer tube structure includes an upper straight tube and a lower straight tube. The lower end of the upper straight tube is bent around once and then extends to the lower straight tube. The upper straight tube is connected to the pressure gauge, and the lower straight tube is connected to the top of the upper cylinder.

[0008] Furthermore, in the aforementioned marine instrument hydrostatic testing device, the upper connecting flange is provided at the end of the upper pipe, and the lower connecting flange is provided at the end of the lower pipe.

[0009] Furthermore, the aforementioned marine instrument hydrostatic testing device includes three adjusting cylinders of different lengths.

[0010] Furthermore, in the aforementioned marine instrument hydrostatic testing device, the detachable fixed connection structure between the upper cylinder and the lower cylinder and the mounting bracket includes: the upper cylinder is fastened to the mounting bracket by an upper U-bolt, and the lower cylinder is fastened to the mounting bracket by a lower U-bolt.

[0011] Furthermore, in the aforementioned marine instrument hydrostatic testing device, when the upper cylinder is connected to the lower cylinder, a sealing gasket is provided between the upper cylinder and the lower cylinder; when the upper cylinder is connected to the adjusting cylinder, a sealing gasket is provided between the upper cylinder and the adjusting cylinder.

[0012] The advantages of this utility model are: its structure is simple, it can be used for water level gauges and water level controllers of various sizes and models, it is flexible, it can be reused continuously, and it is convenient to test, which greatly improves the convenience of instrument water pressure testing. This not only reduces testing costs, but also ensures the stability and safety of marine boilers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the water pressure testing device for marine instruments described in this utility model.

[0014] Figure 2 This is a schematic diagram of the adjusting cylinder in the water pressure testing device for marine instruments described in this utility model.

[0015] Figure 3 This is a schematic diagram showing the changing center distance between the upper and lower connecting pipes after connecting different regulating cylinders. Detailed Implementation

[0016] The water pressure testing device for marine instruments described in this utility model will be further described in detail below with reference to preferred embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3As shown, the marine instrument's hydrostatic testing device includes: a mounting bracket 1, an upper cylinder 2, a lower cylinder 3, and three adjusting cylinders of different lengths. In this embodiment, the three adjusting cylinders are a first adjusting cylinder 41, a second adjusting cylinder 42, and a third adjusting cylinder 43. The lengths of the first adjusting cylinder 41, the second adjusting cylinder 42, and the third adjusting cylinder 43 increase sequentially. In this embodiment, the heights of the three adjusting cylinders are H1, H2, and H3, respectively, where H1 < H2 < H3.

[0018] The upper cylinder 2 and lower cylinder 3 are detachably and fixedly connected to the mounting bracket 1. Specifically, the upper cylinder 2 is fastened to the mounting bracket 1 by upper U-bolts 201, and the lower cylinder 3 is fastened to the mounting bracket 1 by lower U-bolts 301. The upper cylinder 2 and lower cylinder 3 are fixed with U-bolts respectively, which is simple in structure and convenient for disassembly, fixing and installation.

[0019] A pressure detection mechanism is installed at the top of the upper cylinder 2, including a pressure gauge 5. The pressure gauge 5 is connected to the top of the upper cylinder 2 via a pressure buffer pipe 51. The pressure buffer pipe 51 consists of an upper straight pipe 511 and a lower straight pipe 512. The lower end of the upper straight pipe 511 is bent once and then extends to the lower straight pipe 512. The upper straight pipe 511 is connected to the pressure gauge 5, and the lower straight pipe 512 is connected to the top of the upper cylinder 2. An upper connecting pipe 21 for connecting to the steam side connecting pipe 61 of the marine boiler instrument is provided on one side of the upper cylinder 2. For easy connection, an upper connecting flange 211 is provided at the end of the upper connecting pipe 21. Threads are provided on the inner wall of the lower port of the upper cylinder 2. The marine boiler instrument includes a water level gauge and a water level controller.

[0020] The lower cylinder 3 has a lower pipe 31 on one side for connecting to the water-side pipe 62 of the marine boiler instrument, and an inlet 32 ​​at the bottom of the lower cylinder 3 for connecting to the pump. The upper port of the lower cylinder 3 has threads on its outer wall.

[0021] Each regulating cylinder includes: a regulating cylinder body 40, an upper connecting section 401 at the upper end of the regulating cylinder body 40, threads on the outer wall of the upper connecting section 401, and threads on the inner wall of the lower port of the regulating cylinder body 40.

[0022] The lower end of the upper cylinder 2 and the upper end of the lower cylinder 3 can be threaded together to form a seal, thus connecting the upper and lower cylinders. (See [reference]). Figure 1 As shown, a sealing gasket 7 is provided between the upper cylinder 2 and the lower cylinder 3.

[0023] The upper connecting section 401 of any one of the adjusting cylinders can be threadedly and securely connected to the lower port of the upper cylinder 2, and the lower port of its adjusting cylinder body 40 can be threadedly and securely connected to the upper port of the lower cylinder 3, thereby enabling the adjusting cylinder to communicate with both the upper cylinder 2 and the lower cylinder 3. A sealing gasket 7 is provided between the upper cylinder 2 and the adjusting cylinder. The sealing gasket 7 is used to further improve the sealing effect.

[0024] Depending on the boiler specifications, different models of water level gauges or controllers are required. All models of water level gauges or controllers include a steam-side inlet 61 and a water-side inlet 62, but the center distance between the steam-side inlet 61 and the water-side inlet 62 varies between different models. The water pressure testing device for marine instruments described in this invention can meet the water pressure testing requirements of water level gauges or controllers with different center distances.

[0025] The hydrostatic testing device for marine instruments described in this utility model has the following operating modes: When the lower port of the upper cylinder 2 and the upper port of the lower cylinder 3 are threadedly sealed and fixedly connected, the center distance between the upper connecting pipe 21 and the lower connecting pipe 31 is L1; when the upper connecting section 401 of the first adjusting cylinder 41 is threadedly sealed and fixedly connected to the lower port of the upper cylinder 2, and the lower port of the adjusting cylinder body 40 of the first adjusting cylinder 41 is threadedly sealed and fixedly connected to the upper port of the lower cylinder 3, the center distance between the upper connecting pipe 21 and the lower connecting pipe 31 is L2; ​​when the second adjusting cylinder 4... When the upper connecting section 401 of the second adjusting cylinder 42 is threadedly sealed and fixed to the lower port of the upper cylinder 2, and the lower port of the adjusting cylinder body 40 of the second adjusting cylinder 42 is threadedly sealed and fixed to the upper port of the lower cylinder 3, the center distance between the upper connecting pipe 21 and the lower connecting pipe 31 is L3; when the upper connecting section 401 of the third adjusting cylinder 43 is threadedly sealed and fixed to the lower port of the upper cylinder 2, and the lower port of the adjusting cylinder body 40 of the third adjusting cylinder 43 is threadedly sealed and fixed to the upper port of the lower cylinder 3, the center distance between the upper connecting pipe 21 and the lower connecting pipe 31 is L4. Therefore, the water pressure testing device for marine instruments described in this utility model can be applied to water pressure testing of water level gauges or water level controllers with four different center distance lengths, exhibiting excellent applicability and high flexibility. This not only significantly reduces the cost of water pressure testing for water level gauges or water level controllers but also effectively improves the efficiency of water pressure testing for water level gauges or water level controllers.

[0026] The specific working principle is as follows: Taking a water level controller as an example, the connection method described above is selected based on the center distance of the water level controller 6 to be tested. The upper cylinder 1 and lower cylinder 2 are fixed on the mounting bracket 1. The hydraulic water pump is connected to the inlet 32 ​​at the bottom of the lower cylinder 3 via a connecting pipe. The steam side connecting pipe 61 of the water level controller 6 to be tested is sealed and fixedly connected to the upper connecting flange 211 of the upper connecting pipe 21 of the upper cylinder 2. The water side connecting pipe 62 of the water level controller 6 is sealed and fixedly connected to the lower connecting flange 311 of the lower connecting pipe 31 of the lower cylinder 3. Water is then pumped in using the hydraulic water pump. The pressure gauge 5 displays the pressure. After reaching the pressure, it is checked whether the pressure on the pressure gauge 5 can be stabilized at that pressure. The pressure change indicates whether the water level controller under test is a qualified product.

[0027] As can be seen from the above, the water pressure testing device for marine instruments described in this utility model has a simple structure, can be adapted to various sizes and models of water level gauges and water level controllers, has good flexibility, can be reused repeatedly, and is convenient for testing, which greatly improves the convenience of water pressure testing of instruments, thereby not only reducing testing costs, but also ensuring the stability and safety of marine boilers.

Claims

1. A hydrostatic testing device for marine instruments, including: The mounting bracket is characterized by comprising an upper cylinder, a lower cylinder, and several adjusting cylinders of different lengths. The upper and lower cylinders are detachably and fixedly connected to the mounting bracket. A pressure detection mechanism is provided at the top of the upper cylinder. An upper connecting pipe for connection to the steam side of a marine instrument is provided on one side of the upper cylinder. An upper connecting thread is provided on the inner wall of the lower port of the upper cylinder. A lower connecting pipe for connection to the water side of a marine instrument is provided on one side of the lower cylinder. A water inlet for connection to a pump is provided at the bottom of the lower cylinder. A thread is provided on the outer wall of the upper port of the lower cylinder. Each adjusting cylinder... The structure includes: an adjusting cylinder body, an upper connecting section at the upper end of the adjusting cylinder body, threads on the outer wall of the upper connecting section, and threads on the inner wall of the lower port of the adjusting cylinder body; the lower port of the upper cylinder body and the upper port of the lower cylinder body can be threadedly sealed and fixed, thereby connecting the upper and lower cylinder bodies; the upper connecting section of any adjusting cylinder body can be threadedly sealed and fixed to the lower port of the upper cylinder body, and the lower port of its adjusting cylinder body can be threadedly sealed and fixed to the upper port of the lower cylinder body, thereby connecting the adjusting cylinder body with the upper and lower cylinder bodies; the marine instruments include a water level gauge and a water level controller.

2. The hydrostatic testing device for marine instruments according to claim 1, characterized in that: The pressure detection mechanism includes a pressure gauge, which is connected to the top of the upper cylinder via a pressure buffer tube.

3. The hydrostatic testing device for marine instruments according to claim 2, characterized in that: The pressure buffer tube consists of an upper straight tube and a lower straight tube. The lower end of the upper straight tube is bent around once and then extends to the lower straight tube. The upper straight tube is connected to the pressure gauge, and the lower straight tube is connected to the top of the upper cylinder.

4. The hydrostatic testing device for marine instruments according to claim 1, characterized in that: The upper connecting flange is provided at the end of the upper pipe, and the lower connecting flange is provided at the end of the lower pipe.

5. The hydrostatic testing device for marine instruments according to claim 1, characterized in that: It contains three adjustable cylinders of different lengths.

6. The hydrostatic testing device for marine instruments according to claim 1, characterized in that: The detachable and fixed connection structure between the upper cylinder and the lower cylinder and the mounting bracket includes: the upper cylinder is fastened to the mounting bracket by upper U-bolts, and the lower cylinder is fastened to the mounting bracket by lower U-bolts.

7. The hydrostatic testing device for marine instruments according to claim 1, characterized in that: When the upper cylinder is connected to the lower cylinder, a sealing gasket is provided between the upper cylinder and the lower cylinder; when the upper cylinder is connected to the adjusting cylinder, a sealing gasket is provided between the upper cylinder and the adjusting cylinder.

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