Ammonia gas alarm calibration device

Abstract

The utility model discloses an ammonia gas alarm calibration device which comprises a test box, a sealing door is installed on one side of the test box, an air inlet assembly is installed above one side of the test box, an exhaust assembly is installed on one side of the top of the test box, a supporting pipe is fixed to the middle of the top end of the test box, and an ammonia gas alarm is inserted into the supporting pipe. By arranging the clamping assembly, when the ammonia gas alarm is placed in the supporting pipe, the detection end of the ammonia gas alarm makes contact with a clamping base in the clamping assembly, and at the moment, the clamping base is stressed to move along the supporting plate through a guide rod and compress a telescopic spring; the reaction force applied after the telescopic spring is compressed acts on the detection end of the ammonia gas alarm through the clamping seat, so that the ammonia gas alarm is quickly clamped and fixed, the disassembly and assembly are convenient, the continuous test is convenient, the sealing can be performed during the clamping, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of ammonia alarm calibration technology, and in particular to an ammonia alarm calibration device. Background Technology

[0002] Ammonia gas detectors are a new generation of high-tech electronic products, employing high-precision sensors as detection elements, offering high sensitivity and fast response. When the detector detects that the concentration of ammonia in the environment reaches or exceeds the preset alarm value, it transmits the signal to the controller via a shielded cable. The controller immediately issues an audible and visual alarm and simultaneously activates the exhaust system or shuts off the solenoid valve to cut off the gas supply, achieving safety. Widely used in various types of cold storage rooms, laboratories where ammonia is present, and ammonia storage warehouses, it effectively prevents poisoning accidents and explosions, thereby protecting human life and property.

[0003] Chinese Patent Publication No. CN212845305U discloses an ammonia alarm calibration device. Through an ammonia supply mechanism, an appropriate amount of ammonia can be introduced into a sealed box. In conjunction with the ammonia alarm on the bracket, the staff can calibrate the ammonia alarm by comparing the alarm monitoring data of the ammonia alarm with the monitoring data of the gas flow meter. Through the cooperation of equipment such as water tank and water trough, the ammonia in the sealed box can also be absorbed, reducing the pollution of ammonia to the environment.

[0004] However, compared with existing technologies and reference documents, the current ammonia alarm calibration process involves fixing the ammonia alarm and then injecting a certain amount of ammonia into the test chamber to test the accuracy of the ammonia alarm, which is convenient for calibration. However, the disassembly and assembly of the ammonia alarm during the test is relatively troublesome, inconvenient to use, and reduces the continuity of the device. Summary of the Invention

[0005] The main purpose of this invention is to provide a calibration device for an ammonia alarm.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A calibration device for an ammonia alarm includes a test chamber with a sealed door on one side, an air inlet assembly on the upper side of one side of the test chamber, an exhaust assembly on the top side of the test chamber, a support tube fixed to the middle of the top of the test chamber, an ammonia alarm inserted into the support tube, and a clamping assembly located outside the detection end of the ammonia alarm inside the test chamber. The clamping assembly includes symmetrically arranged clamping seats, with guide rods installed at the far ends of both sets of clamping seats. A telescopic spring is provided outside the guide rod, and a support plate is fixed to one end of the telescopic spring. The top of the clamping seat has an arc-shaped structure, and the guide rod is slidably connected to the support plate.

[0008] Preferably, the air intake assembly includes an air intake pipe fixedly connected to the test chamber, and a flow valve is installed on the air intake pipe.

[0009] Preferably, a first one-way valve is installed on the side of the air intake pipe away from the test chamber, and the first one-way valve is connected to the air intake pipe clamp.

[0010] Preferably, the exhaust assembly includes an exhaust pipe fixedly connected to the test chamber, and a second one-way valve is installed on the exhaust pipe.

[0011] Preferably, an operation panel is installed on one side of the test chamber, and a concentration sensor is fixed in the lower center of the test chamber, and the concentration sensor is electrically connected to the operation panel.

[0012] Preferably, the top of the control panel is provided with a wiring port, and the ammonia alarm is connected to the wiring port via a line.

[0013] Preferably, the opposite side of the two sets of clamping seats is made of rubber.

[0014] The beneficial effects of this technology are:

[0015] By setting up a clamping assembly, when the ammonia alarm is placed inside the support tube, the detection end of the ammonia alarm contacts the clamping seat inside the clamping assembly. At this time, the clamping seat is subjected to force and moves along the support plate through the guide rod, compressing the telescopic spring. The reaction force applied after the telescopic spring is compressed acts on the detection end of the ammonia alarm through the clamping seat, thereby achieving quick clamping and fixing of the ammonia alarm. It is easy to assemble and disassemble, facilitates continuous testing, and can seal during clamping, improving the accuracy of detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of an ammonia alarm calibration device according to the present invention;

[0017] Figure 2 This is a main sectional view of a preferred embodiment of an ammonia alarm calibration device according to the present invention;

[0018] Figure 3 This is a schematic diagram showing the connection relationship between the ammonia alarm and the clamping assembly in a preferred embodiment of an ammonia alarm calibration device according to the present invention.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Test chamber; 2. Sealed door; 3. Air inlet assembly; 301. Air inlet pipe; 302. Flow valve; 303. First check valve; 4. Exhaust assembly; 401. Exhaust pipe; 402. Second check valve; 5. Support pipe; 6. Ammonia alarm; 7. Clamping assembly; 701. Clamping seat; 702. Guide rod; 703. Telescopic spring; 704. Support plate; 8. Concentration sensor; 9. Operation panel; 10. Wiring port. Detailed Implementation

[0021] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0022] like Figures 1-3 As shown, this embodiment provides an ammonia alarm calibration device, including a test chamber 1. A sealing door 2 is installed on one side of the test chamber 1 to seal one side of the test chamber 1. An air inlet assembly 3 is installed above one side of the test chamber 1, and an exhaust assembly 4 is installed on the top side of the test chamber 1. A support pipe 5 is fixed in the middle of the top of the test chamber 1, which supports an ammonia alarm 6. The ammonia alarm 6 is inserted into the support pipe 5. A clamping assembly 7 is provided inside the test chamber 1 outside the detection end of the ammonia alarm 6. The clamping assembly 7 includes symmetrically arranged clamping seats 701. 701 can clamp the ammonia alarm 6. Guide rods 702 are installed at the far ends of both sets of clamping seats 701. The guide rods 702 can guide the movement of the clamping seats 701. A telescopic spring 703 is provided on the outside of the guide rod 702. The reaction force applied by the compressed telescopic spring 703 is applied to the detection end of the ammonia alarm 6 through the clamping seat 701. A support plate 704 is fixed to one end of the telescopic spring 703. The support plate 704 can support the guide rod 702. The top of the clamping seat 701 has an arc-shaped structure, and the guide rod 702 is slidably connected to the support plate 704.

[0023] like Figures 1-2 As shown, the air intake assembly 3 includes an air intake pipe 301 fixedly connected to the test chamber 1. A flow valve 302 is installed on the air intake pipe 301, which enables the air supply pipeline to inject ammonia into the test chamber 1 through the air intake pipe 301. During the injection process, the flow valve 302 detects the ammonia flow rate.

[0024] like Figures 1-2 As shown, a first one-way valve 303 is installed on the side of the air inlet pipe 301 away from the test chamber 1. The first one-way valve 303 is connected to the pipe clamp of the air inlet pipe 301, and the backflow of ammonia is prevented during the injection process through the first one-way valve 303.

[0025] like Figures 1-2As shown, the exhaust assembly 4 includes an exhaust pipe 401 fixedly connected to the test chamber 1. A second one-way valve 402 is installed on the exhaust pipe 401, which facilitates the external air extraction equipment to extract ammonia gas from the test chamber 1 through the exhaust pipe 401 for recycling. The second one-way valve 402 can prevent ammonia gas from flowing back into the test chamber 1.

[0026] like Figures 1-2 As shown, an operation panel 9 is installed on one side of the test chamber 1, and a concentration sensor 8 is fixed in the lower middle part of the test chamber 1. The concentration sensor 8 is electrically connected to the operation panel 9, and can detect the ammonia concentration in the test chamber 1 through the concentration sensor 8. The detection result is fed back to the operation panel 9, which makes it convenient for the staff to calibrate the ammonia alarm 6 through the operation panel 9.

[0027] like Figures 1-2 As shown, the top of the control panel 9 is provided with a wiring port 10. The ammonia alarm 6 is connected to the wiring port 10 through a line, which enables the ammonia alarm 6 to be connected to the control panel 9 through the wiring port 10.

[0028] like Figures 1-2 As shown, the two sets of clamping seats 701 are made of rubber on opposite sides, which can ensure that the connection between the ammonia alarm 6 and the support tube 5 is sealed when clamped.

[0029] The working principle of this device is as follows: During use, the operator places the ammonia alarm 6 inside the support tube 5. At this time, the detection end of the ammonia alarm 6 contacts the clamping seat 701 within the clamping assembly 7. The clamping seat 701, under pressure, moves along the support plate 704 via the guide rod 702, compressing the telescopic spring 703. The reaction force exerted by the compressed telescopic spring 703 acts on the detection end of the ammonia alarm 6 through the clamping seat 701, thus quickly clamping and fixing the ammonia alarm 6. This allows for easy assembly and disassembly, facilitating continuous testing, and allows for precise clamping. The system is sealed to improve detection accuracy. After placement, the ammonia alarm 6 and the wiring port 10 are connected via a connecting cable. After wiring, the gas supply pipe injects ammonia into the test chamber 1 through the inlet pipe 301. During the injection process, the ammonia flow rate is detected by the flow valve 302, and the ammonia concentration in the test chamber 1 is detected by the concentration sensor 8. The detection results are fed back to the operation panel 9, which allows the staff to calibrate the ammonia alarm 6 through the operation panel 9. After the detection and calibration are completed, the external gas extraction equipment extracts the ammonia in the test chamber 1 through the exhaust pipe 401 for recovery.

[0030] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.

Claims

1. A calibration device for an ammonia gas alarm, characterized in that: The test chamber (1) includes a sealed door (2) installed on one side of the test chamber (1), an air intake assembly (3) installed on the upper side of one side of the test chamber (1), an exhaust assembly (4) installed on the top side of the test chamber (1), a support tube (5) fixed in the middle of the top of the test chamber (1), an ammonia alarm (6) inserted into the support tube (5), a clamping assembly (7) located outside the detection end of the ammonia alarm (6) inside the test chamber (1), the clamping assembly (7) includes symmetrically arranged clamping seats (701), guide rods (702) are installed at the far ends of the two sets of clamping seats (701), a telescopic spring (703) is arranged on the outside of the guide rod (702), and a support plate (704) is fixed at one end of the telescopic spring (703). The top of the clamping seat (701) is an arc-shaped structure, and the guide rod (702) is slidably connected to the support plate (704).

2. The ammonia alarm calibration device according to claim 1, characterized in that: The air intake assembly (3) includes an air intake pipe (301) fixedly connected to the test box (1), and a flow valve (302) is installed on the air intake pipe (301).

3. The ammonia alarm calibration device according to claim 2, characterized in that: A first one-way valve (303) is installed on the side of the air intake pipe (301) away from the test box (1), and the first one-way valve (303) is connected to the pipe clamp of the air intake pipe (301).

4. The ammonia alarm calibration device according to claim 1, characterized in that: The exhaust assembly (4) includes an exhaust pipe (401) fixedly connected to the test box (1), and a second one-way valve (402) is installed on the exhaust pipe (401).

5. The ammonia alarm calibration device according to claim 1, characterized in that: An operation panel (9) is installed on one side of the test box (1), and a concentration sensor (8) is fixed in the lower middle part of the test box (1). The concentration sensor (8) is electrically connected to the operation panel (9).

6. The ammonia alarm calibration device according to claim 5, characterized in that: The top of the operation panel (9) is provided with a wiring port (10), and the ammonia alarm (6) is connected to the wiring port (10) via a line.

7. The ammonia alarm calibration device according to claim 1, characterized in that: The two sets of clamps (701) are made of rubber on one side of each other.

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